Pneumercator LDE740 Instruction Manual

PNEUMERCAT OR

Peter Sinkiwskij

Digitally signed by Peter Sinkiwskij
DN: cn=Peter Sinkiwskij, o=Pneumercator Co., Inc.,
ou=Headquarters, email=[e-mail], c=US
Date: 2017.08.03 13:07:38 -04'00'

Liquid Level Control Systems

INSTRUCTION MANUAL

Multi Tank
Monitoring
System

MODEL LDE 740

(Revised July 8, 2017)

© COPYRIGHT 2017 PNEUMERCATOR CO.

1785 EXPRESSWAY DRIVE NORTH, HAUPPAUGE, NY 11788

[phone] Phone

[phone] Fax

[phone] Product Support

http://www.pneumercator.com

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

NOTICE: PNEUMERCATOR CO., INC. reserves the right to make improvements to the

product described in these instructions at any time and with no notice.

WARNING: This equipment generates, uses, and can radiate radio frequency energy and

if not installed and used in accordance with the instruction manual, may cause interference to
radio communications. It has been tested and found to comply with the limits for a Class A
computing device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to provide
reasonable protection against such interference when operated in a commercial environment.
Operation of this equipment in a residential area is likely to cause interference in which case the
user at his own expense will be required to take whatever measures may be required to correct
the interference.

IMPORTANT: Installation of this equipment must be in accordance with these instructions

as adopted from the following codes:

ISA RP12.6, "Installation of Intrinsically Safe Instrument Systems in Class I Hazardous

Locations".

NFPA 70, "National Electrical Code".

Alteration, modification or replacement with non-factory components could impair the

intrinsic safety of this equipment.

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Operation and Installation Manual

Table of Contents

Section 1 Introduction 6

Section 2 Specifications 9

Section 3 Installation 11
Section 3.1 Mechanical Installation 11
Section 3.2 Transmitter/Sensor Installation 11
Section 3.2.1 Tank Level Transmitters 11
Section 3.2.2 Switch Sensors 12
Section 3.2.3 Leak Detection Sensors 13
Section 3.3 Electrical Installation 16
Section 3.4 Installation Checklist 17
Section 3.4.1 System Map and Setup 18

Section 4 Operation 19
Section 4.1 Normal Operation 19
Section 4.1.1 Display Mode 19
Section 4.1.2 Tank / Channel Selection 20
Section 4.1.3 System Defaults 20
Section 4.2 Leak Detection 21
Section 4.3 Theft Mode 22
Section 4.4 The Horn 23
Section 4.5 The Relay Contacts 23
Section 4.5.1 Latching Relays 25
Section 4.6 System Tests 25
Section 4.7 Maintenance 26

Section 5 Keypad Commands 27
Section 5.1 How to Enter Keypad Commands 27
Section 5.2 Keypad Commands - Grouped by Function 29
Section 5.3 Keypad Commands - Numerical Order 33
Section 5.4 Keypad Command Entry 35

Section 6 RS-232 Communications 52
Section 6.1 RS-232 Command Format 52
Section 6.2 How to Enter RS-232 Commands 53
Section 6.3 RS-232 Commands - Grouped by Function 54
Section 6.4 RS-232 Commands - Numerical Order 57
Section 6.5 RS-232 Command Entry 59
Section 6.6 Packed Data Format 72

Section 7 Troubleshooting & Servicing 74

Figure 1 Tank Level Transmitter Wiring - TB2 12
Figure 2 Switch Sensor Wiring - TB3 13
Figure 3 Leak Sensor Wiring - TB4 14
Figure 4 9-901 Cable Lengths 14
Figure 5 Relay Contact Wiring - TB5 24

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Operation and Installation Manual

Figure 6 Relay Contact Wiring - TB6 24
Figure 7 Key Definitions 27
Figure 8 RS-232 Special Characters 53
Figure 9 2-412 Installation 79
Figure 10 2-501 Installation 81
Figure 11 9-901 Installation 83
Figure 12 9-902 Installation 84
Figure 13 9-903 Installation 85
Figure 14 Main Circuit Board Layout 86
Figure 15 Display Circuit Board Layout 87
Figure 16 System Wiring Diagram: LDE-740 88
Figure 17 Program Chip Replacement 89
Figure 18 Printer Paper and Ribbon Replacement 90
Figure 19 LS600 LD Installation 91
Figure 20 RSU-800 Installation 92

Appendix A Keypad Error Codes 94
Appendix B Relay and Horn Alarm Conditions 95
Appendix C Tank Product Codes 97
Appendix D RS-232 Connector 99
Appendix E RS-232 Setup 100

Warranty 101

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PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Section 1: Introduction

The Pneumercator LDE-740 is an advanced inventory management and
control system. Drawing upon Pneumercator's more than 99 years of experience in
liquid level controls and measurement systems, the LDE-740 is designed to help
simplify the inventory process, and to be extremely easy to operate.

This 16-bit microprocessor controlled system continuously monitors the level
of product in up to 4 storage tanks. The product level is available on the daylight
visible display in units of either inches of product height, or in gallons.

The LDE-740 easily accommodates different sizes of underground and
aboveground storage tanks, and is suitable for all types of fluids. Some of the fluids
that are suitable for monitoring with the LDE-740 are petroleum products, waste oil,
conductive fluids, water, alcohols, solvents, lubricants, and corrosive chemicals. The
gauge offers conversion of level to volume pre-programmed to match the geometry
of the storage tank used. Pneumercator's many years of experience help guarantee
an accurate conversion of height to gallons for all types and configurations of storage
tanks.

The gauge provides audible, visible and (optional) printed outputs for high
(overfill), critical and low level alarms, and 8 switch input alarms. Alarms are also
provided for theft detection, and high water (if the optional water detection is ordered
with the model 2-412 tank level transmitter only). The LDE-740 also provides 8
channels of precision leak detection. Visible alarms are continuously on until the
conditions are corrected. The audible alarm may be silenced for a particular condition
by pressing the HORN RESET pushbutton on the front panel and may be
programmed from the integral keypad to automatically shut off after a specified
period of time. The audible alarm may be disabled for all conditions, by using a
command in programming mode.

The gauge has 8 relays with dry contacts that will activate on programmed
conditions. The relay contacts are available at the terminal block as Form C contacts
that may be programmed for normally energized or normally unenergized states. The
relay contacts are rated at 5 amps at 120 VAC.

Printed hard-copy inventory reports of product level and volume in the tanks
may be requested at any time by pressing the PRINT pushbutton on the front panel
if the optional printer is present. Hard-copy records of alarms and deliveries are
automatically printed on occurrence.

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The system features self-diagnostics that test the audible alarm, visual
alarms, clock, relay operation, and data storage memory. These tests are available
from the keypad, and help to ensure reliable and trouble-free operation of the
LDE-740.

Set-up parameters for the storage tanks, and for the system as a whole may
be printed at any time by a keypad command. This allows for hard-copy verifications
and records of the conditions that the system is operating under.

Variations in tank installations, fitting tolerances, and tank tilts may be
compensated for by entering an installation offset adjustment. This allows the
system to maintain maximum accuracy in its measurements.

The LDE-740 can take inputs from 8 leak detection sensors designed to monitor
collection sumps and the annular spaces of double wall tanks for leakage of
hydrocarbons. The system provides indications for detection of dry, water, and
hydrocarbons. Detection of air (dry condition) is indicated by a Green light. Detection
of hydrocarbons is indicated by a Red light. Detection of water is indicated by an
Amber light. The leak detection capabilities meet EPA requirements for annual
testing and monthly monitoring.

The LDE-740 will retain memory of a hydrocarbon or water alarm even if the
alarm condition later disappears. The alarm memory is battery backed up, so the
memory will remain in the event of a power failure. The alarm memory may be cleared
by using the Clear Leak Detection Latch keypad command.

The adjustable volume system horn will sound an audible alarm when the
selected alarm conditions are present. Audible alarm silencing may be done manually
by pressing the HORN RESET button on the cover of the console, or may be
automatically timed for a selectable automatic time delay reset. Time delay periods
of 1 to 7 minutes in 1-minute increments are available. Relay outputs may be
programmed to actuate on selected conditions and may be programmed to shut off
after time delays of from 1 to 15 minutes, or be programmed to manually shut off by
pressing the HORN RESET button on the cover of the console.

Sensors may be tested and calibrated by keypad programming. The switch
inputs may be programmed to accept normally open or normally closed mechanical
contacts. The LDE-740 can also be programmed to accept switch inputs at any leak
detection inputs. Sensors for both sump and annular space detection may be mixed
in a system with no limitations. Switch inputs may also be programmed to act as
standby generator inputs, which notify the system when a standby generator is in
operation. Standby generator-run reports are then automatically generated.

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Operation and Installation Manual

The system console may be mounted in any non-hazardous area where it can
be provided with 120 VAC ±10% at 60 Hz. The standard enclosure is NEMA 1 with
a NEMA 4 console optionally available (printer not available with NEMA 4 option).

The system level transmitters and sensors are designed for intrinsically safe
operation in Class I, Division 1, Group A, B, C, D areas. The level transmitters may
be separated from the console by 3 wire #18 AWG runs of up to 2200 feet. Leak
sensors may be separated from the console by 3 wire #18 AWG runs of up to 1000
feet. Switch sensors may be separated from the console by 2 wire #18 AWG runs of
up to 2200 feet.

The system is designed to provide safe and reliable operation when installed
as instructed in the Installation section of this manual. All requirements of the
National Electrical Code (NEC) as well as local electrical and fire codes should be
followed in the installation procedures. It is recommended that the user read and
understand ANSI / ISA RP12.6, "Installation of Intrinsically Safe Instrument Systems
in Class I Hazardous Locations”.

If additional information is needed concerning equipment selection, system
planning, installation, operation, servicing or maintenance, please contact:

PNEUMERCATOR CO., INC.

1785 Expressway Drive North

Hauppauge, New York, 11788

Phone [phone]

Fax [phone]

http://www.pneumercator.com

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Operation and Installation Manual

Section 2: Specifications

Power - 120 VAC ± 10%, 60 hertz, 50 Watts, MOV differential and common-mode surge

protection, under voltage detection and protection.

Fuse - 3 A.G. SLO-BLO, 1/4 Amp, 250 VAC or equivalent.

Operating Temperature - -40º F to 122º F (-40º C to 50º C).

Enclosure - NEMA 1 standard, NEMA 4 optional.

Installation - Wall mount.

Calibrations - Alarm points and programming set by keypad maintained for 10-year data

retention on power failure.

Gauging Resolution - 0.1% of tank height.

Gauging Accuracy - ±0.12% of tank height or ±1/8" w/2-412 or ±1/4" w/2-501, whichever

is greatest.

Gauging Repeatability - ±0.1% of tank height.

Displays – Red, 0.8 inch high, seven segment displays. Display mode, Tank / Channel

select, Theft mode and Data Recall switches.

Alarm Indications - Tank Level Alarm and Leak Alarm Channel indications always
visible while alarm condition is present. Individual level alarm indications for selected
tank and Individual leak alarm Indications In leak status display mode.

Horn - Min. 85 dB at 3 meters on axis, manual horn reset (silence) pushbutton,
automatically timed horn silence.

Relay Outputs - 8 SPDT dry relay contacts, rated at 5 Amps at 120 VAC, individually
keypad programmable for actuating condition(s) and normally energized or normally
unenergized.

Clock - The clock maintains the time and date and year for (optional) printer functions. It
automatically compensates for Leap Year corrections and Daylight Savings Time. The
time is maintained with an accuracy of ±11 sec / day. 10-year data retention on power
failure.

Level Transmitters - Standard: 2-412 or 2-501. Intrinsically safe for Class I, Division 1,
Groups A, B, C, D, 5 VDC @45 mA.
Optionally from isolated self-powered 4 to 20 mA transducer capable of driving 500 (not
intrinsically safe).

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Switch Inputs - 8 from any mechanical switch input.
Intrinsically safe for Class I, Division 1, Groups A, B, C, D, 5 VDC @25 mA. Individually
programmable for normally open or normally closed switch inputs.

Output Signals - standard RS-232 Port.
Optional 20-column dot matrix printer.

Leak Detection Sensors - 8 from 9-901, 9-902, and 9-903 sensors.
Intrinsically safe for Class I, Division 1, Groups A, B, C, D, 5 VDC @45 mA. Can be
individually programmed to alternately accept normally open or normally closed
mechanical switch inputs.

Leak Detection Testing - Meets EPA requirements for annual testing and monthly
monitoring.

Hydrocarbon Detection ­Products that are to be detected must be non-conductive fluids having a dielectric value of
between 2 and 12.
9-901: 0.33”, 100% pfd, 0% pfa @ 0.1 gph.
9-902: 0.35", 100% pfd, 0% pfa @ 0.1 gph.
9-903: 0.68", 100% pfd, 0% pfa @ 0.1 gph.

Leak Detection Response Time - Less than 1 second for detection, 1 minute for alarm latch.

Leak Detection Indicators -

Red led indicates oil detection.
Amber led indicates water detection.
Green led indicates dry (normal condition).

Level Transmitter/Sensor Operating Temperature ­2-412, 2-501 Level Transmitters: -20 ºF to 180 ºF (-29 ºC to 82 ºC).
9-901, 9-902, 9-903 Sensors: -40 ºF to 130 ºF (-40 ºC to 55 ºC).
LS600 Switch Sensors: -20 ºF to 180 ºF (-29 ºC to 82 ºC).
LS600LD Leak Sensors: -40 ºF to 160 ºF (-40 ºC to 71 ºC).

Level Transmitter/Sensor Operating Pressure ­2-412 Level Transmitter: to 50 psi.
2-501 Level Transmitter: to 15 psi.
9-901, 9-902, 9-903 Sensors: ambient (vented).
LS600 Switch Sensors: to 150 psi.
LS600LD Leak Sensors: to 100 psi.

Level Transmitter/Sensor Cable ­2-412, 2-501, 9-901, 9-902, 9-903: Standard 3 conductor #18 AWG,
2-412 and 2-501 up to 2200 feet. 9-900 sensors up to 1000 feet.
Switch sensors: Standard 2 conductor #18 AWG, up to 2200 feet.

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Operation and Installation Manual

Section 3: Installation

NOTE: INSTALLATION MUST BE DONE BY QUALIFIED PERSONNEL,
FAMILIAR WITH LOCAL WIRING CODES AND EXPLOSION HAZARD
ELECTRICAL SAFETY PRACTICES.

Section 3.1: Mechanical Installation

The LDE-740 console is a NEMA 1 enclosure intended for indoor installation.
An optional NEMA 4 enclosure intended for indoor or outdoor installation is available
and offers protection against splashing water, seepage of water, falling of hose
directed water, and severe external condensation. The NEMA 4 enclosure is also
sleet resistant. Either enclosure has mounting flanges, which allow permanent
fastening to wells, panels, etc.

The console should be located in an area that is easily accessible to the
personnel responsible for operating the system. This is to allow easy maintenance
access, and access to the console for operation and testing. The console must be
located in a non-hazardous area, as close as possible to the demarcation point of the
hazardous area, with available 120 VAC power brought to the console through a
dedicated metal wiring conduit. The metal conduits for level transmitters, sensors, and
power should be weather tight. Bottom entrance holes are provided for 1/2" NPT pipe
or rigid metal conduit, with level transmitters and sensors entering on the bottom left
and power entering on the bottom right.

Consult the local electrical codes for specific requirements.

Section 3.2: Level Transmitter/Sensor Installation

Section 3.2.1: Tank Level Transmitters

There are two different tank-level transmitters available for the LDE-740. The
model 2-412 is designed for installation in 4" minimum tank openings. The model
2-501 is designed for installation in 2" minimum tank openings and is designed for use
with heavy viscous fluids like #6 oil. Self-powered transducers that provide an isolated
4 to 20 mA output may be used for tank gauging if the LDE-740 is ordered from the
factory with this option. If a 4 to 20 mA transducer is used, two (2) 18 AWG wires are
required.

Three (3) 18 AWG wires are required for each model 2-412 and model 2-501
level transmitter. The wiring should be run through NEMA 4 or better junction boxes
and 1/2" weatherproof liquid tight metal conduit. All splices should be waterproofed.
The metal conduit and junction boxes should be sealed against entry of water. If
required, vapor seals may be installed to prevent gas vapors from propagating back
to the console. The transmitter wiring to the console should be run in a dedicated
metal wiring conduit. No non-intrinsically safe wires should be in the same conduit

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Operation and Installation Manual

unless a metal barrier is provided. All Pneumercator level transmitters and sensors
may be run in the same conduit.

The tank level transmitters are wired to TB2 on the circuit board. The Red wires
are connected to position R, the White wires are connected to position W and the
Black wires are connected to position B. If a 2 wire transducer is used, the (+) wire is
connected to position W and the (-) wire is connected to position B. Position R is not
used with a 2 wire transducer. If the optional water detection is present (2-412 only),
the 2 water detection wires are run to the W+ and W- positions for the respective tank.

Figure 1 - Tank Level Transmitter Wiring - TB2

Terminal # Water
Tank R W B W+ W-
1 1 2 3 4 5
2 7 8 9 10 11
3 13 14 15 16 17
4 19 20 21 22 23

The wiring and terminal block (TB2) are intrinsically safe and are physically
separated from the AC power and relay contact wiring and terminal blocks on the right
side (TB5, 6, 7). This separation must be maintained.

See Figure 16, System Wiring Diagram: LDE-740, Page 89.

2-412 Installation (see Figure 9, Pages 80, 81)
2-501 Installation (see Figure 10, Pages 82, 83)

Section 3.2.2: Switch Sensors

Pneumercator makes a number of different LS600 series switch sensors, which
may be used with the LDE-740. See the appropriate LS600 bulletins for details on
these. Any other mechanical switch closure may also be used as switch inputs. The
LDE-740 may also be programmed to accept switch inputs at any LEAK input. If this
feature is used, the two (2) wires of the switch are connected to TB4 positions R and
W of that LEAK input.

Two (2) 18 AWG wires are required for each switch sensor. The wiring should
be run through NEMA 4 or better junction boxes and 1/2" weatherproof liquid tight
metal conduit. All splices should be waterproofed. The metal conduit and junction
boxes should be sealed against entry of water. If required, vapor seals may be
installed to prevent gas vapors from propagating back to the console. The switch
sensor wiring to the console should be run in a dedicated metal wiring conduit. No
nonintrinsically safe wires should be in the same conduit unless a metal barrier is
provided. All Pneumercator level transmitters and sensors may be run in the same
conduit.

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The switch sensors are wired to TB3 on the circuit board. Each switch sensor

is wired to positions + and – for that switch.

Figure 2 - Switch Sensor Wiring TB3

Terminal #
Switch + –
1 1 2

2 3 4
3 5 6
4 7 8
5 9 10
6 11 12
7 13 14
8 15 16

The Wiring and terminal block (TB3) are intrinsically safe and are physically

separated from the AC power and relay contact wiring and terminal blocks on the right
side (TB5, 6, 7). This separation must a maintained.

See Figure 16, System Wiring Diagram: LDE-740, Page 89.

Section 3.2.3: Leak Detection Sensors

There are three leak detection sensors available for the LDE-740. The model

9-901 is designed for installation in a horizontal position in the annular space of F.R.P.
double wall tanks or piping. The model 9-902 and 9-903 are designed for installation
in a vertical position in collection sumps, monitoring pipes and steel double-wall tank
sumps.

Three (3) 18 AWG wires are required for each sensor. The wiring should be run

through NEMA 4 or better junction boxes and 1/2" weatherproof liquid tight metal
conduit. All splices should be waterproofed. The metal conduit and junction boxes
should be sealed against entry of water. If required, vapor seals may be installed to
prevent gas vapors from propagating back to the console. The sensor wiring to the
console should be run in a dedicated metal wiring conduit. No non-intrinsically safe
wires should be in the same conduit unless a metal barrier is provided. All
Pneumercator level transmitters and sensors may be run in the same conduit.

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The sensors are wired to TB4 on the circuit board. The Red wire is connected
to position R, the White wire is connected to position W, and the Black wire is
connected to position B.

Figure 3 - Leak Sensor Wiring - TB4

Terminal #

Sensor R W B

1 1 2 3
2 4 5 6
3 7 8 9
4 10 11 12
5 13 14 15
6 16 17 18
7 19 20 21
8 22 23 24

The wiring and terminal block (TB4) are intrinsically safe and are physically
separated from the AC power and relay contact wiring and terminal blocks on the right
side (TB5, 6, 7). This separation must be maintained.

9-901 Installation (see Figure 11, Page 83 for drawing)

Figure 4 - 9-901 Cable Lengths

Tank size Measurement length

4’ 81"

6' 118"
8’ 149.5"
10’ 193.5"
12’ 222"

1. Use the chart above to determine the cable measurement length for the size of the
tank being monitored.

2. Unroll the sensor / cable assembly and measure from the sensor bottom to the
cable measurement length. Mark the cable at that point.

3. Feed the cable through the bottom of the mounting bushing and cord connector
until the mark on the cable is even with the top of the mounting bushing. Insert the
sensor and cable through the 2” NPT opening and into the annular space.

4. Screw in the mounting bushing and connector.

5. Tighten the connector with the cable mark in the correct position.

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6. Wire the sensor cable end to three 18 AWG wires in a NEMA 4 or better junction
box or in an optional splice kit, part number 10585-3.

9-902 Installation (see Figure 12, Page 84 for drawing)

1. Measure the distance from the top of the 2" opening to the bottom of the area being
monitored. This is the mounting height.

2. Add 2 and 3/16 inches to this dimension to find the cable length measurement.

3. Unroll the sensor / cable assembly and measure from the sensor bottom to the
cable measurement length. Mark the cable at that point.

4. Feed the cable through the bottom of the mounting bushing and cord connector
until the mark on the cable is even with the top of the mounting bushing. Insert the
sensor and cable through the 2" NPT opening.

5. Screw in the mounting bushing and connector.

6. Tighten the connector with the cable mark in the correct position.

7. Wire the sensor cable end to three 18 AWG wires in a NEMA 4 or better junction
box or in an optional splice kit, part number 10585-3.

9-903 Installation (see Figure 13, Page 85 for drawing)

1. Measure the distance from the top of the opening to the bottom of the area being
monitored. This is the mounting height.

2. If using the optional Pneumercator leak monitor tube assembly for Convault tanks
(assembly #900379-1), add 1 inch to this dimension to find the cable length
measurement.

3. Unroll the sensor / cable assembly and measure from the sensor bottom to the
cable measurement length. Mark the cable at that point.

4. Feed the cable through the bottom of the tube cover and cord connector until the
mark on the cable is visible. Insert the sensor and cable through the monitoring
opening.

5. Screw the cord connector into the tube cover and place back on the tube.

6. Tighten the connector with the cable mark in the correct position.

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7. Wire the sensor cable end to three 18 AWG wires in a NEMA 4 or better junction
box or in an optional splice kit, part number 10585-3.

Section 3.3: Electrical Installation

WARNING: Do not connect 120 VAC or turn on 120 VAC until all other
connections have been made, all equipment has been installed, and final inspection
has been completed.

The LDE-740 requires a power input of 120 VAC, ±10%, 60 Hz. The unit is
fused with a 1/4 Amp, 3AG Slo-Blo fuse. Total power usage is less than 60 Watts.
The power input is protected against common and differential-mode power surges
with 3 metal oxide varistors (MOVs). The power line for the alarm console should not
share a breaker circuit with any motors, compressors, or other sources of power
surges or voltage sags. The power wiring to the alarm console should be run in a
dedicated metal wiring conduit. No other wires should be in the same conduit unless
a metal barrier is provided. Three wires make up the power input to the LDE-740:
Black (hot), White (neutral), and Green (ground). If power surges or lightning are local
problems, the 120 VAC power line should be protected with an external (not supplied
by Pneumercator) surge protector or lightning arrestor.

The A.C. power wires run to the terminal block labeled TB7, to positions 1, 2
and 3. Position 1, labeled HOT is the hot lead. Position 2, labeled N is the neutral
lead. Position 3, labeled GND is the ground lead. The terminal blocks will accept wire
sizes up to 14 AWG stranded wire. The wiring and terminal block on the left side (TB1,
2, 3, 4) are intrinsically safe and are physically separated from the AC power and relay
contact output wiring and terminal blocks on the right side (TB5, 6, 7). This separation
must be maintained.

IMPORTANT

Connect a 12 AWG copper wire from the terminal block TB1 (labeled Earth
Ground) to a good earth ground. The ground connection must be within 1 OHM of true
ground and must be made at only one point for the system to maintain intrinsic safety.

Properly dress all wires inside the wiring sections and securely clamp down the
enclosure door and tighten all conduit entrances to seal the system watertight. Install
vapor seals in accordance with local codes for hazardous locations if applicable.

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Section 3.4: Installation Checklist

Do not apply power to the LDE-740 until its installation has been checked and
found to be in accordance with the instructions in this manual; the National Electrical
Code; federal, state and local codes; and other applicable safety codes.

1. Check to be sure that the level transmitter and sensor wires are contained in a
dedicated, separate metal wiring conduit. No wires other than Pneumercator level
transmitter and sensor wires should be in the conduit.

2. Verify that all conduits enter the alarm console through the proper conduit openings
on the bottom of the console. Do not make any other openings in the console.

3. Verify that a 12 AWG copper wire has been connected between TB1 (labeled Earth
Ground) and a good earth ground.

4. Verify that the power supply terminals are correctly wired.

5. Verify that system power is properly wired to a separate, dedicated circuit breaker.

6. Verify that all level transmitters and sensors have been properly wired with
color-coded or marked 18 AWG wires and that the proper color-coding or marking has
been maintained throughout the wiring runs.

7. Verify that all wiring splices are waterproof. Pneumercator part #10585-3 (splice
kit) or equivalent or NEMA 4 or better junction box should be used for all wiring splices.

8. The probe map located on the inside cover of the LDE-740 console should be filled
out to indicate the location of level transmitters and sensors and usage of the various
tank gauging, aux / switch and leak inputs.

9. The system map and setup sheet on the next page should be filled out to indicate
the location of level transmitters and sensors and usage of the various tank gauging,
aux / switch and leak inputs.

10. Securely clamp down the enclosure door.

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A

r

r

A

Operation and Installation Manual

Section 3.4.1: System Map and Setup

Tank Product High Low Critical Offset

1
2
3
4

Chnl

ux / Switch Input Usage Senso
1
2
3
4
5
6
7
8

Chnl Leak Input Usage Senso

1
2
3
4
5
6
7
8

Relay

larms Usage
1
2
3
4
5
6
7
8

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Section 4: Operation

IMPORTANT: Before operating the system, make sure that all items on the installation
checklist in the Installation section of this manual have been checked out and
complied with.

Main Circuit Board layout (see Figure 14, Page 87)

Section 4.1: Normal Operation

The system will continuously monitor the levels of product in all tanks and the
operation of all leak and switch inputs no matter what display mode the system is
operating in. Alarms will actuate the appropriate lights and relays and the horn (if a
relay or horn is programmed for that alarm). Alarm conditions and levels may be
individually programmed from the keypad or the RS-232 communications port.

The Tank Level Alarm and Channel Leak Alarm lights will indicate alarms for
any tank or channel no matter what display mode is selected. Tank Level Alarm lights
can indicate high (overfill), low, critical, and high water alarms for a tank. The critical
alarm may be programmed to act as a high-high or low-low level alarm with a field
programmable setpoint. The default setting for a critical alarm is as a high-high alarm.
Channel Leak Alarm lights can indicate hydrocarbon leak, water leak and Aux / Switch
alarms for a channel.

The system map located on the inside cover of the LDE-740 console should be
filled out to indicate the location of level transmitters and sensors and usage of the
various tank gauging, aux / switch and leak inputs.

Section 4.1.1: Display Mode

The DISPLAY button on the cover of the LDE-740 is used to cycle through the
four display modes - Volume, Inches, Water, and Leak Status. Pressing the DISPLAY
button will shift the display mode to the next lower display mode indication. If the
DISPLAY button is pressed in the Leak Status mode, the display mode will shift to
Volume mode.

The display may be set to indicate Volume, Inches, Water, or Leak Status.
Volume mode indicates the product level in gallons for the selected tank. Inches mode
indicates the product height for the selected tank. Water mode indicates the water
level, if any, in the product for the selected tank. Leak status mode will indicate the
status of the Aux / Switch and Leak inputs for the selected channel. Aux / Switch and
Leak input channels do not necessarily have to be associated with any particular tank.

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In Volume, Inches, and Water display modes the High, Low, Critical, and Water
lights at the lower right of the display indicate the status of those particular alarms for
the selected tank. The Tank Level Alarm lights at the bottom of the display will indicate
a fault with a particular tank no matter what display mode is selected, or tank is
displayed.

In Leak Status display mode the Dry, Oil, Water, and Aux Alarm lights at the
upper right of the display indicate the status of those particular leak and switch alarms
for the selected channel. The Channel Leak Alarm lights at the top of the display will
indicate a fault with a particular channel no matter what display mode is selected, or
channel is displayed.

Leak and Aux / Switch input channels are independent in usage of each other,
and are independent of any particular tank. They may be used in any groupings, and
may be used for sensors not associated with any tank in the system.

Section 4.1.2: Tank / Channel Selection

The TANK / CHANNEL button on the cover of the LDE-740 is used to cycle
through the tanks and channels installed in the system. Pressing the
TANK / CHANNEL button will shift the display mode to the next tank or channel.

In Volume, Inches, or Water display mode the TANK / CHANNEL button will
cycle through the installed tanks in the system, starting with Tank 1 and going to the
highest numbered installed tank (Tank 4 maximum). Pressing the button while
displaying the highest numbered tank will cycle the display to Tank 1.

In Leak Status display mode the TANK / CHANNEL button will cycle through
channels 1 to 8. Pressing the button while displaying Channel 8 will cycle the display
to Channel 1. Leak Inputs and Aux / Switch inputs are both displayed in Leak Status
display mode.

Section 4.1.3: System Defaults

The LDE-740 has default settings that apply when the system is shipped from
the factory, and when a cold reset command has been performed. If these settings
are suitable for the application, no field programming of these functions has to be
done.

System Settings
Header Lines 1, 2, 3 Blank
Alarm Actuation Delay 10 Minutes
Automatic Inventory Printouts 1,2,3 Disabled

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Tank Settings:
High (overfill) Level Alarm 90% of tank capacity
Critical Level Alarm (High-High) 95% of tank capacity
Low Level Alarm 20% of tank capacity
Delivery Threshold 50 Gallons
Theft Threshold 50 Gallons
Offset Adjustment 0.00 Inches
Product Code 00
Tank Name Product #

Switch Input Settings
Switch State Normally Open
Standby Generator Operation Disabled
Switch Name Aux / Switch

Leak Input Settings
Leak State Leak Input
Leak Name Leak #

Relays
Relay State Normally Unenergized
Automatic Shutoff Disabled
Remote Reset Disabled
Relay Delay 0 Minutes (Disabled)
Latching Relay Operation Disabled
Relay Alarm Conditions See Appendix B

Horn
Horn State Enabled
Automatic Shutoff Disabled
Horn Alarm Conditions See Appendix B

RS-232 Port
Baud Rate 2400
Port Mode Local Port, no echo

RS-232 Port when in modem mode
Autoanswer Ring Count 2 Rings (Enabled)
Dialing Mode Tone
Alarm Autodial Disabled
Automatic Inventory Autodial 1, 2, 3 Disabled
Phone Number Blank

Section 4.2: Leak Detection

Leak detection testing with 9-901, 9-902 and 9-903 meets EPA requirements
for annual testing and monthly monitoring. These sensors are intrinsically safe for use
in Class I, Division 1, Groups A, B, C, D areas. Products that are to be detected must
be non-conductive fluids having a dielectric value of between 2 and 12.

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Leak detection response time is less than 1 second for detection of product or
water at the threshold level. The system will latch a leak detection alarm after 1 minute
of continuous detection. This is to ensure that an alarm state is not ignored or
bypassed. A leak detection alarm latch may be cleared by keypad or RS-232
communications port command or by re-calibrating the leak input channels.

Calibration may be done either from the keypad or the RS-232 communications
port. The sensors must be clean and dry and in air. If the sensors are in oil or water,
clean and dry them off before calibrating.

Leak Detection Indicators:
Red led indicates oil detection.
Amber led indicates water detection.
Green led indicates dry (normal condition).

Any leak input channels may be programmed as extra switch inputs from the
keypad or the RS-232 communications port. Using a leak channel as a switch input
disables it for use as a leak input channel. Switches and leak sensors may not be
mixed on the same input.

Section 4.3: Theft Mode

Theft mode may be entered by opening the cover of the console and toggling
S1 on the display circuit board to the THEFT position. When theft mode is entered the
system records the product levels of all tanks in battery-backed memory. Any removal
of product from a tank over the programmed theft threshold will trigger the Theft alarm
for that tank and cause the display to flash. Theft alarms can be programmed to
actuate the horn and relays, and will produce an alarm printout with the optional,
printer.

The threshold for triggering a theft alarm is individually programmable for each
tank in the system. If a tank is programmed for standby generator operation, a theft
alarm will not be triggered when the standby generator is in operation.

The original product level before the theft may be displayed by pressing the
Data Recall momentary pushbutton switch (labeled S2) on the display circuit board in
either Volume or Inches display mode. Releasing the Data Recall pushbutton will
resume display of the current product level. Examination of any tank may be
performed by cycling the displayed tank with the Tank / Channel selector switch.
Toggling S1 to the NORMAL position will exit theft mode.

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This mode is intended to detect only unauthorized removal of product. It is not

intended to comply with EPA or other regulations in regard to leak detection.

Display Circuit Board layout (see Figure 15, Page 88)

Section 4.4: The Horn

The volume of the audible alarm may be controlled by rotating the louver on the
face of the horn. The maximum volume of the horn is a minimum of 85 dB at two feet,
and the loudness may be varied by about 40 dB.

The horn may be reset (silenced) after detection of an alarm condition by
pressing the HORN RESET button on the cover of the system console. This will
silence the horn, but the alarm condition light will remain on.

The system is normally set at the factory to only actuate the horn on selected
alarm conditions. These conditions may be changed by programming the horn with
the keypad or RS-232 communications port. The horn may also be programmed to

be completely disabled. See Appendix B: Relay and Horn Alarm Conditions for a list

of the alarm conditions that can be programmed to actuate the horn and the default
actuation conditions.

The system is normally set at the factory to disable the automatic horn silence
function. This will let the horn sound on detection of the programmed alarm conditions
until it is manually silenced by pressing the HORN RESET button on the system
console cover. The automatic horn reset function may be programmed to silence the
horn after a period of from 1 to 7 minutes in 1-minute increments.

The horn has a delay built-in, so that the same repeating alarm condition will
not re-energize the audible alarm before the alarm condition has been off for a default
10 minutes. The alarm delay may be programmed to be anywhere from 1 to 10
minutes in 1 minute increments, or may be disabled entirely. Different alarm
conditions will activate the horn regardless of the delay state for a particular condition.

Section 4.5: The Relay Contacts

There are 8 relays in the system that provide SPDT Form C dry contacts. The
relay contacts are brought out to TB5 and TB6, and are labeled as Outputs 1 through
8, NC (Normally Closed), C (Common), and NO (Normally Open) positions. These
contacts are rated to 5 Amps at 120 VAC. Wire sizes up to 14 AWG stranded wire
may be used to connect to these relay contact outputs. If the load on the relay contacts
exceeds this rating then the relay should be used to actuate an external power relay
of appropriate rating (not supplied by Pneumercator).

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Figure 5 - Relay Contact Wiring TB5

Terminal #

Relay NC C NO
1 1 2 3
2 4 5 6
3 7 a 9
4 10 11 12

Figure 6 - Relay Contact Wiring TB6

Terminal #

Relay NC C NO

5 1 2 3
6 4 5 6
7 7 8 9
8 10 11 12

See Appendix B: Relay and Horn Alarm Conditions for a list of the alarm

conditions that can be programmed to actuate the relays and the default actuation
conditions.

In the default state, the relays are normally unenergized in a non-alarm
condition, i.e. there is no continuity between the Normally Open (NO) and Common
(C) contacts and there is continuity between the Normally Closed (NC) and Common
(C) contacts. When a programmed alarm condition is detected the relay actuates. This
gives continuity between the Normally Open (NO) and Common (C) contacts, and
breaks continuity between the Normally Closed (NC) and Common (C) contacts. The
relays may be individually programmed to be in a normally energized state, which will
toggle the states of the contacts. In this case, the relay(s) will de-energize on a
programmed alarm condition. This may also be used to give indication of a power
failure, since the relay will de-energize when the power is off.

The system is set at the factory to actuate the relays for the duration of an alarm
condition. Relays may be individually programmed to deactivate after a preselected
time period of from 1 to 15 minutes in 1-minute increments. A relay so programmed
will not reactivate until a new alarm condition appears. This can provide an automatic
cutoff function for a relay.

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The relays may be individually programmed to have a delay of 0 to 5 minutes
in 1-minute increments from the time an alarm is detected and maintained until relay
actuation. The default is that there is no delay from alarm recognition to relay
actuation.

Relays may also be individually programmed to deactivate when the
HORN RESET button on the cover of the system console is pressed (remote reset
operation). A relay so programmed will not reactivate until a new alarm condition
appears. This provides a manual bypass function for relay operation.

All relay programming may be done from the keypad or from the RS-232
communication port.

Section 4.5.1: Latching Relays

Relays may be individually programmed to act as latching relays to perform
functions such as pump control. Latching relays are programmed for fill or drain
functions for a tank. The high (overfill) and low level alarm setpoints for that tank
control the activation and deactivation points for that latching relay.

A relay programmed for fill will activate at the low-level alarm setpoint, and will
deactivate at the high (overfill) level alarm setpoint. A relay programmed for drain will
activate at the high (overfill) level alarm setpoint, and will deactivate at the low-level
alarm setpoint.

Latching relays may be programmed for normally unenergized or normally
energized operation. Latching relays will only respond to the fill or drain condition as
an alarm condition. Functions such as timed shutoff, delayed actuation and remote
reset may also be utilized, providing full pump control.

If the load on the latching relay contacts exceeds the 5 Amps at 120 VAC relay
rating, then the latching relay should be used to actuate an external power relay of
appropriate rating for the load (not supplied by Pneumercator).

Section 4.6: System Tests

The system LEDs, horn, RAM (memory), clock and relays may be tested from
the keypad. The LEDs test will light all the LEDs on the cover until a key press cancels
the test and returns to normal mode. The horn test will sound the horn until a key
press cancels the test and returns to normal mode. The RAM and clock tests w ill
return to normal mode automatically unless a fault is detected. In that case an error
code will be displayed. The relay test will first activate the relays and then deactivate
then after a key press.

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Section 4.7: Maintenance

The time between maintenance periods is a variable that will depend upon the
environment in which the level transmitters, sensors, and system console are
operating. The console should be tested every six months by using the keypad
self-diagnostic commands.

The leak detection sensors should be visually inspected for fouling or clogging
at least once a year. A fouled or clogged leak sensor can give false alarms. If the leak
sensor is fouled or clogged, it should be cleaned with soap and water or a mild solvent,
and unclogged with compressed air. After visual inspection, the leak sensors should
be reinstalled, and recalibrated.

If an actual leak occurs, after corrective action is taken, the leak sensors should
be cleaned and inspected and recalibrated before reinstallation.

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Section 5 Keypad Commands

Figure 7 – Key Definitions

Key Meaning

0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
A Null (reserved)
B Backspace
C Cancel
D Dash (Minus Sign)
E Enter
F Function

Section 5.1 How to Enter Keypad Commands

FUNCTION: The FUNCTION key, which is labeled ‘F’, precedes all commands

given in PROGRAM mode.

- (MINUS): The minus sign, which is labeled 'D' (for DASH), is used in the entry

of installation-offset adjustments.

BACKSPACE: The BACKSPACE key, which is labeled ‘B', is used to correct
an error in key entry in PROGRAM mode. The BACKSPACE will erase the mistaken
key entry and correct the display.

ENTER: The ENTER key, which is labeled 'E' is used to terminate ALL
command entries In PROGRAM mode. A command will not be performed until the
ENTER key is pressed. Until the ENTER key is pressed, the command line can be
edited with the BACKSPACE and CANCEL LINE keys.

CANCEL LINE: The CANCEL LINE key, which is labeled 'C', can be used to
cancel a command line at any time until the ENTER key is pressed.

NULL: The NULL key, which is labeled 'A', has no defined use at the present
time. Entry of the NULL key should be corrected by use of the BACKSPACE or
CANCEL LINE keys.

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**** Where braces { } are shown bracketing parameters in the commands, they
are shown for reasons of clarity only, and must not be entered into the command line
entered into the LDE-740.****

**** When PROGRAMMING mode is entered by pressing the FUNCTION key
on the keypad, the front panel display is cleared, and the function symbol is displayed.
The function symbol is a box in the bottom right of the display window. As command
numbers and parameters are entered, the characters displayed move left. Characters
that scroll off the left end of the display are not lost, merely past the display window.
They may be reshown when the backspace key is used. During PROGRAMMING
mode all normal gauging and alarm functions are performed. If no key has been
pressed for two minutes, PROGRAMMING mode is automatically canceled, and the
normal display is resumed. When a display command has been given, normal display
will resume when any key is pressed or two minutes have elapsed. ****

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Section 5.2: Keypad Commands – Grouped by Function

Function Command Number

Clock
Display Time 00
Enter Time 01

Display Date 02
Enter Date 03

Display Weekday 04
Enter Weekday 05

Print Clock 06

Level Alarms
Display High Alarm Setting 07
Print High Alarm Setting 08
Enter High Alarm Setting 09

Display Low Alarm Setting 10
Print Low Alarm Setting 11
Enter Low Alarm Setting 12

Display Critical Alarm State 64
Enter Critical Alarm State 65
Display Critical Alarm Setting 66
Enter Critical Alarm Setting 67
Print Critical Alarm State and Setting 68

Tank
Print Tank Parameters 13

Display Offset Adjustment 14
Print Offset Adjustment 15
Enter Offset Adjustment 16

Enter Product Code 24
Print Product Name 25

Display Theft Threshold 69
Enter Theft Threshold 70

Deliveries
Print Latest Delivery 58
Print Stored Deliveries 59

Clear Stored Deliveries 60

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Display Delivery Threshold 61
Print Delivery Threshold 62
Enter Delivery Threshold 63

Switch Inputs
Program Switch State 40
Print Switch Setup 41

Display Named Switch Alarms 75
Enter Named Switch Alarms 76
Print Named Alarms 79

Display Generator Switch Status 80
Enter Generator Switch Status 81

Leak Detection
Program Leak Channel State 42
Calibrate Leak Detection 43
Clear Leak Detection Latch 44
Print Leak Detection Setup 45

Display Named Leak Alarms 77
Enter Named Leak Alarms 78
Print Named Alarms 79

Relay Outputs
Program Relay Alarm Conditions 35
Program Relay Shutoff 36
Program Relay State 37
Program Relay Delay 38
Print Relay Setup 39

Display Relay Latch Status 73
Enter Relay Latch Status 74

Horn
Program Horn Alarm Conditions 32
Program Horn Shutoff 33
Print Horn Setup 34

Standby Generator
Display Generator Switch Status 80
Enter Generator Switch Status 81

Print Generator Run History 84

Diagnostics
Test LEDs 17
Test Horn 18
Test RAM (memory) 19

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Test Clock 20
Test Relays 21
Test LEDs and Horn 53
Test RS-232 Port 57

Printer
Enter Automatic Inventory Print Time 22
Print Automatic Inventory Print Times 23

Enter Product Code 24
Print Product Name 25

Clear Printer Buffer 26

Program Switch Alarm Printout 96

RS-232
Display Baud Rate 27
Print Baud Rate 28
Enter Baud Rate 29

Enter Auto Answer Ring Count 54
Display Auto Answer Setup 55
Print Auto Answer Setup 56

Test RS-232 Port 57

Display RS-232 Port Mode 85
Enter RS-232 Port Mode 86

Display Dialing Mode 87
Enter Dialing Mode 88

Display Alarm Dialout 89
Enter Alarm Dialout 90

Display Automatic Inventory Dialout 91
Enter Automatic Inventory Dialout 92

Enter Phone Number 93

Print RS-232 Port Setup 94

System
Print System Setup 30

Print Current Alarm Status 31

RESERVED 46
RESERVED 47
RESERVED 48

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Calibrate Zero 49
Calibrate Span 50

Warm Reset System 51
Cold Reset System 52

Display Alarm Actuation Delay 71
Enter Alarm Actuation Delay 72

History
Print Alarm History 82
Print Stored Inventory 83
Print Generator Run History 84

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Section 5.3: Keypad Commands - Numerical Order

Function Command Number
Display Time 00
Enter Time 01
Display Date 02
Enter Date 03
Display Weekday 04
Enter Weekday 05
Print Clock 06
Display High Alarm Setting 07
Print High Alarm Setting 08
Enter High Alarm Setting 09
Display Low Alarm Setting 10
Print Low Alarm Setting 11
Enter Low Alarm Setting 12
Print Tank Parameters 13
Display offset Adjustment 14
Print Offset Adjustment 15
Enter Offset Adjustment 16
Test LEDs 17
Test Horn 18
Test RAM (memory) 19
Test Clock 20
Test Relays 21
Enter Automatic Inventory Print Time 22
Print Automatic Inventory Print Times 23
Enter Product Code 24
Print Product Name 25
Clear Printer Buffer 26
Display Baud Rate 27
Print Baud Rate 28
Enter Baud Rate 29
Print System Setup 30
Print Current Alarm Status 31
Program Horn Alarm Conditions 32
Program Horn Shutoff 33
Print Horn Setup 34
Program Relay Alarm Conditions 35
Program Relay Shutoff 36
Program Relay State 37
Program Relay Delay 38
Print Relay Setup 39
Program Switch State 40
Print Switch Setup 41
Program Leak Channel State 42
Calibrate Leak Detection 43
Clear Leak Detection Latch 44
Print Leak Detection Setup 45
RESERVED 46
RESERVED 47
RESERVED 48

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Calibrate Zero 49
Calibrate Span 50
Warm Reset System 51
Cold Reset System 52
Test LEDs and Horn 53
Enter Auto Answer Ring Count 54
Display Auto Answer Setup 55
Print Auto Answer Setup 56
Test RS-232 Port 57
Print Latest Delivery 58
Print Stored Deliveries 59
Clear Stored Deliveries 60
Display Delivery Threshold 61
Print Delivery Threshold 62
Enter Delivery Threshold 63
Display Critical Alarm State 64
Enter Critical Alarm State 65
Display Critical Alarm Setting 66
Enter Critical Alarm Setting 67
Print Critical Alarm State and Setting 68
Display Theft Threshold 69
Enter Theft Threshold 70
Display Alarm Actuation Delay 71
Enter Alarm Actuation Delay 72
Display Relay Latch Status 73
Enter Relay Latch Status 74
Display Named Switch Alarms 75
Enter Named Switch Alarms 76
Display Named Leak Alarms 77
Enter Named Leak Alarms 78
Print Named Alarms 79
Display Generator Switch Status 80
Enter Generator Switch Status 81
Print Alarm History 82
Print Stored Inventory 83
Print Generator Run History 84
Display RS-232 Port Mode 85
Enter RS-232 Port Mode 86
Display Dialing Mode 87
Enter Dialing Mode 88
Display Alarm Dialout 89
Enter Alarm Dialout 90
Display Automatic Inventory Dialout 91
Enter Automatic Inventory Dialout 92
Enter Phone Number 93
Print RS-232 Port Setup 94
Program Switch Alarm Printout 96

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Section 5.4: Keypad Command Entry

**** NOTE: All character positions shown in the command definition, except for braces
{ }, must be entered, i.e. 'nnnnn' calls for the entry of 5 digits. Braces enclose optional
parameters.

Display Time (00): F 00 E

Displays time until any key press or timeout.

Enter Time (01): F 01 hh mm E

hh is the hours (in military time), i.e. 15 is 3 PM.

mm is the minutes, i.e. 20 is 20 after the hour.

Entry of leading zeroes is required for both hours and minutes, i.e. 5 A.M. must be

entered as 0500. 6 P.M. must be entered as 1800.

Display Date (02): F 02 E

Displays the date until any key press or timeout.

Enter Date (03): F 03 mm dd yy E

mm is the month, i.e. 04 is April.

dd is the date, i.e. 03 is the third day of the month.

yy is the year, i.e. 94 is 1994, 00 is 2000, 01 is 2001.

Entry of leading zeroes is required for days and months, i.e. June must be entered as

06, and the third day of the month must be entered as 03.

Display Weekday (04): F 04 E

Displays the day of the week until any key press or timeout.

Enter Weekday (05): F 05 d E

d is the day of the week.

1 = Sunday.

2 = Monday.

3 = Tuesday.

4 = Wednesday.

5 = Thursday.

6 = Friday.

7 = Saturday.

Print Clock (06): F 06 E

Prints clock date and time settings.

Display High Alarm Setting (07): F 07 T E

T is the tank number (1 to 4).

Displays the level set for high (overfill) alarm until any key press or timeout. Default
setting is 90% of tank capacity.

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Print High Alarm Setting (08): F 08 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints high (overfill) alarm setting.

Enter High Alarm Setting (09): F 09 T nnnnn E

T is the tank number (1 to 4).
nnnnn is the level to set the alarm (5 digits required).

Leading zeroes are required, i.e. 6000 gallons must be entered as 06000. Default

setting is 90% of tank capacity.

Display Low Alarm Setting (10): F 10 T E

T is the tank number (1 to 4).

Displays the level set for low alarm until any key press or timeout. Default setting is

20% of tank capacity.

Print Low Alarm Setting (11): F 11 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints low alarm setting.

Enter Low Alarm Setting (12): F 12 T nnnnn E

T is the tank number (1 to 4).
nnnnn is the level to set the alarm (5 digits required).

Leading zeroes are required, i.e. 600 gallons must be entered as 00600. Default

setting is 20% of tank capacity.

Print Tank Parameters (13): F 13 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the setup parameters for the tank. The parameters printed are: Tank number,
tank product name, tank product code, critical level alarm state (high-high or low-low), critical
level

alarm setting, high level alarm setting, low level alarm setting, tank capacity, tank

diameter, offset adjustment setting, theft threshold and delivery threshold.

Display Offset Adjustment (14): F 14 T E

T is the tank number (1 to 4).

Displays the level set for the offset adjustment until any key press or timeout.

Print Offset Adjustment (15): F 15 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the offset adjustment for the tank.

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Enter Offset Adjustment (16): F 16 T {-} nnn E

T is the tank number (1 to 4).
nnn is the level to set the offset to (this level is entered in hundredth’s of an inch, i.e.

2 inches is entered as 200. The offset for a tank may range from -9.99 inches to +9.99 inches.

Leading zeroes are required, i.e. 0.50 inches of positive offset must be entered as

050.

If a negative offset is desired, it is preceded by a minus (–) sign. This is accomplished

by pressing the key labeled 'D'. No sign is required or allowed for a positive offset.

The offset for the tank is derived as follows:

1. First remove any pressurized or vapor recovery tubes from the dipstick
measurement opening. These tubes can cause a reading to vary by as much as 3 inches
depending upon the pressure in the tank.

2. Take a very careful dipstick reading with an accurate dipstick. Write down the
reading.

3. Write down the fuel height in inches shown by the Gauge.

4. Subtract the Gauge reading from the dipstick reading (Dipstick -Gauge = Difference)
to get the Installation Offset and record it for reference.

Test LEDs (17): F 17 E

Lights all the system LEDs, any key press turns off the LEDs.

Test Horn (18): F 18 E

Turns on the horn, any key press turns off the horn.

Test RAM (memory) (19): F 19 E

Tests the scratchpad memory, if an error is found, an error code is displayed (error

code #4). If no error is found, no message is presented.

Test Clock (20): F 20 E

Tests the clock, if an error is found, an error code is displayed (error code #2). If no

error is found, no message is presented.

Test Relays (21): F 21 E

Toggles the state of all the relays, any key press toggles the relay states again and

ends the test.

Enter Automatic Inventory Print Time (22): F 22 N hh mm d E

N is the number of the automatic print time. There are 3 automatic print times. The

printout will be the normal inventory printout.

hh is the hours (in military time), i.e. 15 is 3 PM.
mm is the minutes, i.e. 20 is 20 after the hour.

Entry of leading zeroes is required for both hours and minutes, i.e. 5 A.M. must be

entered as 0500.

d is the day of the week.

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1 = Sunday.
2 = Monday.
3 = Tuesday.
4 = Wednesday.
5 = Thursday.
6 = Friday.
7 = Saturday.

If 0 is entered as the day of the week, all days are selected.
If the command is entered in the form: F22NE that automatic print time will be disabled.

The most recent of each of the 3 automatic printouts are stored in non-volatile memory

and are available with the command to Print Stored Inventory (command #83).

Print Automatic Inventory Print Times (23): F 23 E

Prints the times selected for automatic inventory printouts.

If an automatic print time is not in effect for one of the 3 times, the return message will
be "Auto Print # n Disabled”, where n is a number from 1 to 3. If none of the automatic print
times is in effect, the message will be repeated for all three times.

Enter Product Code (24): F 24 T nn E

T is the tank number (1 to 4).

nn is the 2-digit number, which represents the name of the product in the tank. See

Appendix C: Tank Product Codes for a list of the built-in product codes and names.

Custom product names may be entered from the RS-232 port and assigned to product
codes 60, 61, 62 and 63. These custom product names may then be assigned to tanks the
same as the built-in product names.

Print Product Name (25): F 25 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the name assigned to the tank contents.

Clear Printer Buffer (26): F 26 E

Clears the printer buffer and cancels any print commands in progress, or in the printer
queue.

Display Baud Rate (27): F 27 E

Displays the baud rate set for the RS-232 communications port until any key press or
timeout.

1 = programmed for 300 baud.

2 = programmed for 1200 baud.

3 = programmed for 2400 baud. default setting.

4 = programmed for 4800 baud.

5 = programmed for 9600 baud.

Print Baud Rate (28): F 28 E

Prints the baud rate setup condition for the RS-232 communications port.

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Enter Baud Rate (29): F 29 n E

n is a number from 1 to 5 for the baud rate desired.
1 = programmed for 300 baud.
2 = programmed for 1200 baud.
3 = programmed for 2400 baud. default setting.
4 = programmed for 4800 baud.
5 = programmed for 9600 baud.

Print System Setup (30): F 30 E

Prints system setup parameters. These parameters are: Serial number of system,
system software revision, clock settings (time, date, day of week), alarm actuation delay time,
leak channel programming, aux / switch input programming, automatic inventory printout
times and RS-232 port setup.

Print Current Alarm Status (31): F 31 E

Prints the status of all alarms that are currently active in the system. Critical Level,
High Level, Low Level, High Water, Theft, Aux / Switch, Hydrocarbon Leak and Water Leak
alarms are profiled.

Program Horn Alarm Conditions (32): F 32 {-} cc E

cc is the 2-digit number of the condition(s) that will actuate the horn. More than one

condition may be set to actuate the horn. If more than one condition is set for the horn, the

programming must be repeated for each condition. See Appendix B: Relay and Horn Alarm
Conditions for a list of the alarm condition code numbers and the default actuation conditions.

A minus sign (DASH) before a condition number disables that condition.

If cc is entered as 99, the horn programming is set to the default conditions. If cc is
entered as -99, all enabling conditions for the horn are cleared.

If cc is entered as 00, the horn is disabled. All previously programmed enabling
conditions are retained. If cc is entered as -00, the horn is enabled. All previously

programmed enabling conditions for the horn are retained.

Program Horn Shutoff (33): F 33 t E

t is the time for automatic horn shutoff after alarm actuation. There is a 10-minute

default delay built-in between horn actuations for the same condition. This is programmable
with the Alarm Actuation Delay setting (command #72).

0 = manual horn shutoff (must be silenced with RESET HORN pushbutton on

enclosure cover). This is the default state.

1 to 7 = the horn will automatically silence after the programmed number of minutes

(may be manually silenced with RESET HORN pushbutton on enclosure cover). This setting
is available in 1-minute increments.

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Print Horn Setup (34): F 34 E

Prints the setup and enabling conditions for the horn.

Program Relay Alarm Conditions (35): F 35 N cc E

N is the number of the relay that is being programmed. This is relay 1 to relay 8.
cc is the 2-digit number of the condition(s) that will actuate the relay. More than one

condition may be set to actuate the relay. If more than one condition is set for the relay, the

programming must be repeated for each condition. See Appendix B: Relay and Horn Alarm
Conditions for a list of the alarm condition code numbers and the default actuation conditions.

A minus sign (DASH) before a condition number disables that condition.

If cc is entered as 99, the relay programming is set to the defaults for that relay. If cc

is entered as -99, all enabling conditions for that relay are cleared.
Program Relay Shutoff (36): F 36 N tt E

N is the number of the relay that is being programmed. This is relay 1 to relay 8.
tt is the time for automatic relay shutoff after alarm actuation. This setting is available

in 1-minute increments.

00 = no automatic shutoff (relay remains actuated as long as alarm condition exists).
01 to 15 = will automatically toggle the relay state after the programmed number of

minutes.

Program Relay State (37): F 37 N s E

N is the number of the relay that is being programmed. This is relay 1 to relay 8.
s is the state for an inactive relay output.

0 = normally unenergized (relay energizes after alarm). Relay will stay on as long as

the alarm condition is present.

1 = normally energized (relay de-energizes after alarm). Relay will stay off as long as

the alarm condition is present.

This state can also be used as a power failure indication on a relay not in alarm

condition, or a relay programmed for no alarm conditions.

2 = normally unenergized with reset (relay energizes after alarm). Relay will stay on

as long as the alarm condition is present, or until the horn reset key on the cover is pressed.

3 = normally energized with reset (relay de-energizes after alarm). Relay will stay off

as long as the alarm condition is present, or until the horn reset key on the cover is pressed.

This state can also be used as a power failure indication on a relay not in alarm

condition, or a relay programmed for no alarm conditions.

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Program Relay Delay (38): F 38 N t E

N is the number of the relay that is being programmed. This is relay 1 to relay 8.

t is the time for relay actuation after alarm condition. This setting is available in

1-minute increments.

0 = no delay after alarm before relay actuates.

1 to 5 = minute(s) of delay after alarm is recognized before relay actuates.

Print Relay Setup (39): F 39 E

Prints the setup conditions for all 8 relays.

Program Switch State (40): F 40 N s E

N is the number of the switch that is being programmed. This is switch 1 to switch 8.

s is the state of the switch input in a non-alarm condition.

0 = programmed as normally open switch input. Alarm will activate when the switch

closes.

1 = programmed as normally closed switch input. Alarm will activate when the switch

opens.

Print Switch Setup (41): F 41 E

Prints the setup conditions for all 8 switches.

Program Leak Channel State (42): F 42 N s E

N is the number of the leak channel that is being set-up. This is leak input 1 to leak
input 8.

s is the state of the leak channel.

0 = programmed as leak channel.

1 = programmed as normally open switch input. Alarm will activate when the switch

closes. Sensor must be wired to the R and W (Red and White) terminals.

2 = programmed as normally closed switch input. Alarm will activate when the switch

opens. Sensor must be wired to the R and W (Red and White) terminals.

Calibrate Leak Detection (43): F 43 E

Calibrates the leak detection sensors. The sensors must be clean

and dry and in air.
If the sensors are in oil or water, clean and dry them off before calibrating. Any leak channel
without a sensor attached will be recorded as disabled. If a leak sensor is added, this
command must be used. When the system is first started up, this command must be used to
tell the system how many leak sensors are connected.

Clear Leak Detection Latch (44): F 44 E

Clears the alarm memory latch for all leak detector channels.

Print Leak Detection Setup (45): F 45 E

Prints the setup and status conditions for all leak channels.

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Reserved (46): F 46 E Reserved for future use.
Reserved (47): F 47 E Reserved for future use.
Reserved (48): F 48 E Reserved for future use.

These commands will return an unimplemented command error

(Error Code #1).

Calibrate Zero (49): F 49 T E : E

T is the tank number (1 to 4).

Calibrates the minimum gaugeable point of the tank level transmitter. The first press
of E will set the display to 49. The tank level transmitter can then be adjusted to give its
minimum output (float at the bottom of travel with the 2-412 and 2-501 transmitters). Wait 10­15 seconds before pressing E a second time to ensure an accurate reading. This will lock
this reading into the system as the minimum gaugeable point. This calibration is retained in
battery backed system memory, and will be retained for up to 10 years in the event of power
failures or shutoffs.

This calibration is made at the factory, No user adjustment is normally needed,

It is very important that this command only be used with the float at the bottom of
travel. If the float is at any other position, that position will be used as the minimum gaugeable
point.

Calibrate Span (50): F 50 T E : E

T is the tank number (1 to 4).

Calibrates the maximum gaugeable point of the tank level transmitter. The first press
of E will set the display to 50. The tank level transmitter can then be adjusted to give its
maximum output (float at the top of travel with the 2-412 and 2-501 transmitters). Wait 10-15
seconds before pressing E a second time to ensure an accurate reading. This will lock this
reading into the system as the maximum gaugeable point. This calibration is retained in
battery backed system memory, and will be retained for up to 10 years in the event of power
failures or shutoffs.

This calibration is made at the factory. No user adjustment is normally needed.

It is very important that this command only be used with the float at the top of travel.
If the float is at any other position, that position will be used as the maximum gaugeable point.

Warm Reset System (51): F 51 E

Warm resets the system and performs all self-diagnostic system checks. No system
setup parameters are changed by this command. This command is used to return the system
to a known state. This is the equivalent of powering off the system and then powering it on.

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Cold Reset System (52): F 52 E

Cold resets the system and performs all self-diagnostic system checks. Restores all

system programming defaults.

*****WARNING***** All system setup parameters are reset to their default conditions. All
stored data is cleared from the system memory. Tank charts, tank diameters, tank capacities
and gauge calibrations remain as factory programmed.

**** After cold resetting the system, the system will be in a memory loss state (Error Code 8).
This necessitates pressing any key of the keypad to clear ERROR #8, which is displayed on
the system front panel display, in order to restart normal operation.

Test LEDs and Horn (53): F 53 E

Lights all the system LED's and turns on the horn, any key press turns off the LED's

and the horn.

Enter Auto Answer Ring Count (54): F 54 n E

Sets the modem auto answer ring counter register (S0) to the number of rings before

the modem answers the call.

n is the number of rings. The modem may be set to answer on 1 to 6 rings. A setting

of 0 will disable the modem auto answer function. The modem is initialized to the setup, and

the setup is stored to the modem power-on default setup. This command only applies if the
RS-232 port is set as a modem port (see command #86, Enter RS-232 Port Mode).

The default setting is 2 (auto answer enabled on 2 rings).

Display Auto Answer Setup (55): F 55 E

Displays the modem auto answer ring count until any key press or timeout.

Print Auto Answer Setup (56): F 56 E

Prints the modem auto answer ring count. If the count is 0, the auto answer count is

printed as disabled.

Test RS-232 Port (57): F 57 E

Sends the word 'Hello' 25 times to the RS-232 Port. A breakout box or computer set

up in terminal mode may then be used to verify data flow through the RS-232 Port.

Print Latest Delivery (58): F 58 T E

T Is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the latest stored delivery for the selected tank(s).

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Print Stored Deliveries (59): F 59 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints all stored deliveries for the selected tank(s). The system will store the 6 latest
deliveries for each tank.

Clear Stored Deliveries (60): F 60 E

This command will clear the storage memory of all but the latest delivery for each tank.

Display Delivery Threshold (61): F 61 T E

T is the tank number (1 to 4).

Displays the number of gallons that the inventory level in the tank must rise in a 2
minute period in order to trigger a delivery report. Displays until any key press or timeout.

Print Delivery Threshold (62): F 62 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the number of gallons that the inventory level in the tank must rise in a 2 minute
period in order to trigger a delivery report.

Enter Delivery Threshold (63): F 63 T nnn E

T is the tank number (1 to 4).

nnn is the number of gallons increase in inventory level in a 2 minute period to set as

the threshold for recognizing a delivery for that tank (3 digits required). The number of gallons

may range from 010 to 250 gallons. The threshold set should take into account the resolution

of the level transmitter, the smallest delivery expected and the possibility of wave action in
the tank triggering false deliveries.

Leading zeroes are required, i.e. 50 gallons must be entered as 050.

Display Critical Alarm State (64): F 64 T E

T is the tank number (1 to 4).

Displays the state of the critical alarm for that tank until any key press or timeout. If

the critical alarm is set as a high-high alarm, the display will show a 1.

If the critical alarm is

set as a low-low alarm, the display will show a 0.
Enter Critical Alarm State (65): F 65 T s E

T is the tank number (1 to 4).

s is the state of the critical alarm for that tank.

0 = low-low alarm.

1 = high-high alarm. (default)

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Display Critical Alarm Setting (66): F 66 T E

T is the tank number (1 to 4).

Displays the level set for the critical alarm until any key press or timeout. Default

setting is 95% of tank capacity.

Enter Critical Alarm Setting (67): F 67 T nnnnn E

T is the tank number (1 to 4).
nnnnn is the level to set the alarm (5 digits required).

Leading zeroes are required, i.e. 6000 gallons must be entered as 06000. Default

setting is 95% of tank capacity.

Print Critical Alarm State and Setting (68): F 68 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the critical alarm setting and state (low-low or high-high).

Display Theft Threshold (69): F 69 T E

T is the tank number (1 to 4).

Displays the level threshold set for a theft alarm for that tank until any key press or

timeout.

Enter Theft Threshold (70): F 70 T nnn E

T is the tank number (1 to 4).
nnn is the number of gallons decrease in inventory level to set as the threshold for

recognizing a theft from that tank (3 digits required). The number of gallons may range from

010 to 250 gallons. The threshold set should take into account the resolution of the level

transmitter and the possibility of wave action in the tank triggering false theft alarms.

Leading zeroes are required, i.e. 50 gallons must be entered as 050.

Display Alarm Actuation Delay (71): F 71 E

Displays the time delay set for recognizing repeated activations of the same alarm
condition. This delay affects only the horn and alarm printouts. The default setting is 10
minutes. Displays until any key press or timeout.

Enter Alarm Actuation Delay (72): F 72 tt E

is the time delay set for recognizing repeated activations of the same alarm

tt
condition. This delay affects only the horn and alarm printouts. The default setting is 10

minutes. This setting is available in 1-minute increments.

00 = no delay.

01 to 10 = will delay the activation of the horn and alarm printouts for a repeat of an

alarm until that alarm has been off for the specified time period. Relay activations are not
affected by this command. If a delay is desired in relay activation after an alarm occurs, use
command #38, Program Relay Delay.

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Display Relay Latch Status (73): F 73 N E

N is the number of the relay to display. This is relay 1 to relay 8.

Displays the status of the relay as a latching relay until any key press or timeout.
0 = Latch disabled. default
1 = Tank 1 fill.
2 = Tank 1 drain.
3 = Tank 2 fill.
4 = Tank 2 drain.
5 = Tank 3 fill.
6 = Tank 3 drain.
7 = Tank 4 fill.
8 = Tank 4 drain.

Enter Relay Latch Status (74): F 74 N s E

N is the number of the relay to program. This is relay 1 to relay 8.
s is a number from 0 to 8. If the relay is used as a latching relay, it may not be used

for any other alarm function. If the latching state is disabled, the relay may be programmed
for the usual alarm conditions.

0 = Latch disabled. default
1 = Tank 1 fill.
2 = Tank 1 drain.
3 = Tank 2 fill.
4 = Tank 2 drain.
5 = Tank 3 fill.
6 = Tank 3 drain.
7 = Tank 4 fill.
8 = Tank 4 drain.

The latching relay will use the high and low alarm setpoints for that tank to determine
when to activate and deactivate. The relay may still be programmed to be normally
unenergized or normally energized. A relay programmed for fill will activate at the low-level
alarm setpoint, and stay activated until the high-level alarm setpoint. A relay programmed for
drain will activate at the high-level alarm setpoint, and stay activated until the low-level alarm
setpoint.

The latching relay will be most useful in controlling pumps and motors. Each relay is
rated at 5 Amps @120 VAC maximum load. If the load exceeds the relay rating, the relay
may be interfaced to an external power relay rated for that load. The relay may be used to
control A.C. or D.C. voltages as long as the maximum rating is not exceeded.

When a relay is programmed as a latching relay, other alarm actuation conditions do
not apply. Timed shutoff, delayed actuation and remote reset still apply. Previous
programming is retained and will be used again if the latch state is set to disabled (condition

0).

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Display Named Switch Alarms (75): F 75 N E

N is the number of the switch input to display. This is switch input 1 to switch input 8.

Displays until any key press or timeout.

The default for all switch inputs is identification only by number. If a name is assigned,
that switch input is identified by both number and name. Assigning the name 'Generator' to
a switch input does not program it as a standby generator switch input. See command #81,
Enter Generator Switch Status for standby generator switch programming.

0 = none. Switch is only identified by number.

1 = Sump.

2 = Piping.

3 = Containment.

4 = Interstitial.

5 = Leak.

6 = Reservoir.

7 = Well.

8 = Generator.

9 = custom name.

A custom name (up to 20 characters long) may be entered for any switch input from
the RS-232 Port. See RS-232 Port command #51, Enter Custom Switch Name for further
information.

Enter Named Switch Alarms (76): F 76 N n E

N is the number of the switch input a name is being assigned. This is switch input 1 to
switch input 8.

n is a number from 0 to 9 that identifies the name. There are 8 pre-assigned names,

and a fully custom name may also be assigned. The default assignment for all switch inputs

is n=0 (no name).

0 = none. Switch is only identified by number.

1 = Sump.

2 = Piping.

3 = Containment.

4 = Interstitial.

5 = Leak.

6 = Reservoir.

7 = Well.

8 = Generator.

9 = custom name.

A custom name (up to 20 characters long) may be entered for any switch input from
the RS-232 Port. See RS-232 Port command #51, Enter Custom Switch Name for further
information.

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Display Named Leak Alarms (77): F 77 N E

N is the number of the leak input to display. This is leak input 1 to leak input 8. Displays

until any key press or timeout.

The default for all leak inputs is identification only by number. If a name is assigned,

that leak input is identified by both number and name,

0 = none. Leak input is only identified by number.
1 = Sump.
2 = Piping.
3 = Containment.
4 = Interstitial.
9 = custom name.

A custom name (up to 20 characters long) may be entered for any leak input from the
RS-232 Port. See RS-232 Port command #53, Enter Custom Leak Name for further
information.

Enter Named Leak Alarms (78): F 78 N n E

N is the number of the leak input a name is being assigned. This is leak input 1 to leak
input 8.

n is a number from 0 to 4, or 9 that identifies the name. There are 4 pre-assigned

names, and a fully custom name may also be assigned. The default assignment for all leak

inputs is n=0 (no name).

0 = none. Leak input is only identified by number.

1 = Sump.

2 = Piping.

3 = Containment.

4 = Interstitial.

9 = custom name.

A custom name (up to 20 characters long) may be entered for any leak input from the
RS-232 Port. See RS-232 Port command #53, Enter Custom Leak Name for further
information.

Print Named Alarms (79): F 79 E

Prints the names assigned to all 8 switch inputs and all 8 leak inputs. If no name is
assigned to an input, it will be designated by number only.

Display Generator Switch Status (80): F 80 N E

N is the number of the switch input to display. This is switch input 1 to switch input 8.

Displays until any key press or timeout.

The default for all switch inputs is as normal switch Inputs.

0 = normal switch input.

1 = Standby Generator switch input.

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Enter Generator Switch Status (81): F 81 N s T E

N is the number of the switch input that is being designated as a Standby Generator

Switch. This is switch input 1 to switch input 8.

s is either 0 or 1.
0 = normal switch input.
1 = Standby Generator switch input.

T is the tank number (1 to 4) to which the switch input is assigned.

When a switch input is assigned as a Standby Generator switch for a tank, it is only
used for that purpose. When the input goes to an active state (as determined by the normally
open or closed programming, command #40, Program Switch State) no alarm is activated.
Instead, a Generator On Report is printed. When the input deactivates, a Generator Run
Report Is printed.

The Generator Run Report lists the starting and ending times, dates, volumes and
product heights as well as the amount of fuel used and the amount left in the tank (ullage).

The last 3 Generator Run Reports for each tank are stored for future reference. See
command #84, Print Generator Run History.

Print Alarm History (82): F 82 E

Prints the last 3 occurrences of each alarm. The system records the time and date of
all High Level, Low Level, Critical Level, Theft, High Water, Switch Input, Hydrocarbon Leak,
and Water Leak alarms.

Print Stored Inventory (83): F 83 E

Prints the last stored Inventory report for each of the 3 automatic inventory printout
times. See command #22, Enter Automatic Inventory Print Time.

Print Generator Run History (84): F 84 T E

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the last 3 Standby Generator Run Reports for the selected tank(s).

Display RS-232 Port Mode (85): F 85 E

Displays the operating mode of the RS-232 Port. Displays until any key press or
timeout. The default mode for the RS-232 Port is as a local port with no echo.

0 = local port, no echo.

1 = local port, with echo.

2 = modem port.

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Enter RS-232 Port Mode (86): F 86 s E

s is a number from 0 to 2 that sets the operating mode for the RS-232 Port.
0 = local port, no echo. In this mode, the RS-232 Port operates independently of the

printer. It may be accessed with a computer connected through a null modem cable.

1 = local port, with echo. In this mode, the RS-232 Port echoes all output directed to

the printer. All alarm reports, inventory reports, and other printouts are echoed to the RS-232
Port. It may be used with a computer connected through a null modem cable or a printer
connected with a standard RS-232 cable. Any RS-232 commands and their output do not
echo to the printer.

2 = modem port. In this mode, modem autoanswer and originate functions are

enabled. Automatic dialout to a phone number may be enabled for alarms and / or automatic
inventory printouts. Regular printouts are not echoed to the RS-232 Port. The port will adapt
its baud rate to the modem connection speed.

When RS-232 Port modes are switched, any programming for inactive modes is

retained.

Display Dialing Mode (87): F 87 E

Displays the dialing mode of the RS-232 Port when the port is programmed as a
modem port. Displays until any key press or timeout. The default dialing mode for the port is
Tone (Touch Tone) dialing.

0 = Tone dialing.

1 = Pulse.

Enter Dialing Mode (88): F 88 s E

s is either 0 or 1 for the dialing mode for the RS-232 Port when in modem port mode.

0 = Tone dialing (Touch Tone).

1 = Pulse dialing.

Display Alarm Dialout (89): F 89 E

Displays whether the RS-232 Port in modem mode will automatically dial a phone
number when an alarm occurs. Displays until any key press or timeout.

0 = alarm dialout disabled.

1 = alarm dialout enabled.

Enter Alarm Dialout (90): F 90 s E

s is either 0 or 1 for automatic dialout of a stored phone number when an alarm occurs.

Dialouts will be attempted every 10 minutes for 1 hour until a connection is made.

0 = alarm d

ialout disabled.

1 = alarm dialout enabled.

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Display Automatic Inventory Dialout (91): F 91 E

Displays whether the RS-232 Port in modem mode will automatically dial a phone

number when an automatic Inventory printout occurs. Displays until any key press or timeout.

0 = automatic inventory dialout disabled.
1 = automatic inventory dialout enabled for automatic inventory printout #1.
2 = automatic inventory dialout enabled for automatic inventory printout #2.
3 = automatic inventory dialout enabled for automatic inventory printout #3.
More than one automatic inventory dialout may be enabled at a time. In that case, the

display will show all the printouts that automatic dialout is enabled for.

Enter Automatic Inventory Dialout (92): F 92 s E

s is a number from 0 to 3 that sets automatic dialout of a stored phone number when

an automatic inventory printout occurs.

0 = alarm dialout disabled.
1 = automatic inventory dialout enabled for automatic inventory printout #1.
2 = automatic inventory dialout enabled for automatic inventory printout #2.
3 = automatic inventory dialout enabled for automatic inventory printout #3.

A minus sign (DASH) before a number disables that condition.
Dialouts will be attempted every 10 minutes for 1 hour until a connection is made.

Enter Phone Number (93): F 93 xxx...xxx E (up to 20 numbers)

xxx...xxx is a phone number to use for alarm and inventory dialouts. This may be up

to 20 numbers long. This command will accept numbers from 0 to 9 only. If a delay is desired
between digits of a phone number, a DASH may be entered by pressing the 'D' key. Typically,
this delay will be for 1 second (see your modem documentation). The DASH will be stored
as a comma, which is the standard modem delay character. Any access codes, country
codes, extensions and long distance codes should be part of the phone number string.

If characters other than these are desired, they may be entered from the RS-232 port

(operating in local mode). See RS-232 Port command #63, Enter Phone Number.

Print RS-232 Port Setup (94): F 94 E

Prints the setup for the RS-232 Port. The information printed is: Baud rate, parity, start
bit, stop bit, word length, port operating mode, dialing type, autoanswer mode, phone
number, alarm dialout mode and automatic inventory dialout mode.

Program Switch Alar

m Printout (96): F 96 N s E

Allows enabling or disabling printer reports when an Aux / Switch alarm occurs. The
enabling / disabling is done on a per switch basis.

N is the number of the switch that is being programmed. This is switch 1-8.

s is the state of the printer when the switch alarm occurs.

0 = setting will enable a printout for the selected switch. (This is the default). If the

AUTOMATIC ALARM DIALOUT feature (Keypad command #90, or RS-232 command #61)
is enabled, the occurrence of a switch alarm will be transmitted over the RS-232 port.

1 = setting will disable a printout for the selected switch. The switch alarm occurrence

will not be transmitted over the RS-232 port.

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Section 6 : RS-232 Communications

The Pneumercator Model LDE-740 comes with an RS-232 communications
port, which may be used to transfer data to a remote computer system or terminal.
The RS-232 port is configured as a DTE, for connection to a modem. If a direct
connection to a computer or terminal is desired, a null modem cable must be used.
The RS-232 port is located on the case of the LDE-740, and is supplied with a

standard DB-25 female connector (see Appendix D for pinouts).

The RS-232 port is normally an answer only port, which will respond to
commands from a remote computer or terminal. It will not normally initiate
communication on its own. The default setup conditions for the RS-232 port are:
1 start bit, 1 stop bit, 7 data bits, 2400 baud, even parity, no echo, DTR true, RTS

true, and asynchronous communications (see Appendix E for setup options).

Communication with the RS-232 port uses the ASCII character set (7 data bits,
with the 8th bit clear). Parity is handled internally and will not affect the high data bit,
which is always clear.

If the communications interface between the system and the remote computer
system or terminal does not work, check the cabling and connector pinouts to the

modem and make sure they are correct (see Appendix D). If a null modem cable is
used, check for correct wiring. Test for data flow by using keypad command #57, Test
RS-232 Port. Also make sure that all RS-232 setup parameters are the same for the
system and the remote computer system or terminal (see Appendix E). Make sure

that any communications software that is used has the capability of sending a SOH
(start of header or Ctrl-A) character at the beginning of every command. If your
communications software has the capability of using pre-defined macros, you may
wish to define macros for either all commands or the most commonly used commands
(see the instruction manuals for your communications software, computer system or
terminal, and modem).

Section 6.1: RS-232 Command Format

All commands are entered in a similar format, starting with SOH (start of header,
which is Ctrl-A on a computer keyboard), then the two digit number of the command,
followed by any parameter or parameters required by the command, ended by a
carriage return or any other control character.

The system will respond by performing the desired command. If a response
message is called for by the command, it will be sent immediately. All response
messages begin and end with at least one blank line. A blank line from the system is
generated by sending a carriage return and line feed (this forms a new line character).
If no response message is called for, the system will echo the command number
followed by "O.K.". Any errors detected by the system will result in a return message
which consists of the command number and parameter(s) up to the error, followed by
"*ERROR*".

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Section 6.2: How to Enter RS-232 Commands

Figure 8 – RS-232 Special Characters

Name Hex code Keyboard entry

SOH-start of header 01H Ctrl-A
LF-line feed 0AH Ctrl-J
CR-carriage return 0DH Ctrl-M
New line 0D0AH Ctrl-M, Ctrl-J

**** To enter a control character from a computer or Teletype keyboard, hold
down the key marked Ctrl, and press the desired alphabetic key, then release both
keys.

**** Any multi-line responses will terminate each line with a new line character,
which is a compound ASCII character consisting of a carriage return and line feed
(CR,LF - 0D0AH). Line terminations sent to the system may consist of only a carriage
return, in which case the system will supply the line feed.

**** Where commas or braces { } are shown separating parameters in the
commands, they are shown for reasons of clarity only, and must not be entered into
the command string sent to the LDE-740.

**** The start of every command is shown as {SOH}, which represents a Ctrl-A
character.

**** The end of every command is shown as {^}, which represents any control
character. Normally, the control character chosen by the user will be a carriage return
(Ctrl-M), but any control character may be used.

**** If there is no error, your computer or terminal will respond by displaying the
result of the specific command entry or request.

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Section 6.3: RS-232 Commands - Grouped by Function

Function Command Number

Clock
Print Clock 00
Enter Time 01
Enter Date 02
Enter Weekday 03

Level Alarms
Print High Alarm Setting 06
Enter High Alarm Setting 07

Print Low Alarm Setting 08
Enter Low Alarm Setting 09

Print Critical Alarm State and Setting 41
Enter Critical Alarm State 42
Enter Critical Alarm Setting 43

Tank
Print Tank Parameters 11

Print Offset Adjustment 12
Enter Offset Adjustment 13

Print Product Name 14
Enter Product Code 15

Print Theft Threshold 44
Enter Theft Threshold 45

Enter Custom Tank Name 65

Deliveries
Print Latest Delivery 36
Print Stored Deliveries 37

Clear Stored Deliveries 38

Print Delivery Threshold 39
Enter Delivery Threshold 40

Switch Inputs
Print Switch Setup 26
Program Switch State 27

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Enter Named Switch Alarms 50
Enter Custom Switch Name 51
Print Named Alarms 54

Enter Generator Switch Status 55

Leak Detection
Print Leak Detection Setup 28
Program Leak Channel State 29
Calibrate Leak Detection 30
Clear Leak Detection Latch 31

Enter Named Leak Alarms 52
Enter Custom Leak Name 53
Print Named Alarms 54

Relay Outputs
Print Relay Setup 21
Program Relay Alarm Conditions 22
Program Relay Shutoff 23
Program Relay State 24
Program Relay Delay 25

Print Relay Latch Status 48
Enter Relay Latch Status 49

Horn
Print Horn Setup 18
Program Horn Alarm Conditions 19
Program Horn Shutoff 20

Standby Generator
Enter Generator Switch Status 55

Print Generator Run History 58

Printer
Print Automatic Inventory Print Times 04
Enter Automatic Inventory Print Time 05

Print Product Name 14
Enter Product Code 15

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Enter Custom Tank Name 65
Enter Custom Site Header Line 1 66
Enter Custom Site Header Line 2 67
Enter Custom Site Header Line 3 68

Program Switch Alarm Printout 69

RS-232
Enter RS-232 Port Mode 59

Enter Dialing Mode 60

Enter Alarm Dialout 61

Enter Automatic Inventory Dialout 62

Enter Phone Number 63

Print RS-232 Port Setup 64

System
Print Inventory Report 16

Print System Setup 17

Print Current Alarm Status 10

RESERVED 32
RESERVED 33

Warm Reset System 34
Cold Reset System 35

Print Alarm Actuation Delay 46
Enter Alarm Actuation Delay 47

History
Print Alarm History 56
Print Stored Inventory 57
Print Generator Run History 58

Packed Data
Packed Data Dump 99

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Section 6.4: RS-232 Commands - Numerical Order

Function Command Number

Print Clock 00
Enter Time 01
Enter Date 02
Enter Weekday 03
Print Automatic Inventory Print Times 04
Enter Automatic Inventory Print Time 05
Print High Alarm Setting 06
Enter High Alarm Setting 07
Print Low Alarm Setting 08
Enter Low Alarm Setting 09
Print Current Alarm Status 10
Print Tank Parameters 11
Print Offset Adjustment 12
Enter Offset Adjustment 13
Print Product Name 14
Enter Product Code 15
Print Inventory Report 16
Print System Setup 17
Print Horn Setup 18
Program Horn Alarm Conditions 19
Program Horn Shutoff 20
Print Relay Setup 21
Program Relay Alarm Conditions 22
Program Relay Shutoff 23
Program Relay State 24
Program Relay Delay 25
Print Switch Setup 26
Program Switch State 27
Print Leak Detection Setup 28
Program Leak Channel State 29
Calibrate Leak Detection 30
Clear Leak Detection Latch 31
RESERVED 32
RESERVED 33
Warm Reset System 34
Cold Reset System 35
Print Latest Delivery 36
Print Stored Deliveries 37
Clear Stored Deliveries 38
Print Delivery Threshold 39
Enter Delivery Threshold 40
Print Critical Alarm State and Setting 41
Enter Critical Alarm State 42
Enter Critical Alarm Setting 43
Print Theft Threshold 44

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Enter Theft Threshold 45
Print Alarm Actuation Delay 46
Enter Alarm Actuation Delay 47
Print Relay Latch Status 48
Enter Relay Latch Status 49
Enter Named Switch Alarms 50
Enter Custom Switch Name 51
Enter Named Leak Alarms 52
Enter Custom Leak Name 53
Print Named Alarms 54
Enter Generator Switch Status 55
Print Alarm History 56
Print Stored Inventory 57
Print Generator Run History 58
Enter RS-232 Port Mode 59
Enter Dialing Mode 60
Enter Alarm Dialout 61
Enter Automatic Inventory Dialout 62
Enter Phone Number 63
Print RS-232 Port Setup 64
Enter Custom Tank Name 65
Enter Custom Site Header Line 1 66
Enter Custom Site Header Line 2 67
Enter Custom Site Header Line 3 68
Program Switch Alarm Printout 69

Packed Data Dump 99

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Section 6.5: RS-232 Command Entry

Print Clock (00): {SOH} 00 {^}

Prints the date, time, and day of the week.

Enter Time (01): {SOH} 01 hh mm {^}

hh is the hours (in military time), i.e. 15 is 3 PM.

mm is the minutes, i.e. 20 is 20 after the hour.

Entry of leading zeroes is required for both hours and minutes, i.e. 5 A.M. must be
entered as 0500. 6 P.M. must be entered as 1800.

Enter Date (02): {SOH} 02 mm dd yy {^}

mm is the month, i.e. 04 is APRIL.

dd is the date, i.e. 03 is the third day of the month.

yy is the year, i.e. 92 is 1992, 00 is 2000, 01 is 2001.

Entry of leading zeroes is required for days and months, i.e. June must be entered as

06, and the third day of the month must be entered as 03.
Enter Weekday (03): {SOH} 03 d {^}

d Is the day of the week.

1 = Sunday.

2 = Monday.

3 = Tuesday.

4 = Wednesday.

5 = Thursday.

6 = Friday.

7 = Saturday.

Print Automatic inventory Print Times (04): {SOH} 04 {^}

Prints the times selected for automatic inventory printouts.

If an automatic print time is not in effect for one of the 3 times, the return message will
be "AUTO PRINT # n DISABLED", where n is a number from 1 to 3. If none of the automatic
print times is in effect, the message will be repeated for all three times.

Enter Automatic Inventory Print Time (05): {SOH} 05 N hh mm d{^}

Is the number of the automatic print time. There are 3 automatic print times. The

N

printout will be the normal inventory printout.

hh is the hours (in military time), i.e. 15 is 3 PM.

mm is the minutes, i.e. 20 is 20 after the hour.

Entry of leading zeroes is required for both hours and minutes, i.e. 5 A.M. must be

entered as 0500.

d is the day of the week.

1 = Sunday.

2 = Monday.

3 = Tuesday.

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4 = Wednesday.
5 = Thursday.
6 = Friday.
7 = Saturday.

If 0 is entered as the day of the week, all days are selected.
If the command is entered in the form: {SOH} 05 N {^}, that automatic print time will

be disabled.

The most recent of each of the 3 automatic printouts are stored in non-volatile memory

and are available with the RS-232 command to Print Stored Inventory (command #57).

Print High Alarm Setting (06): {SOH} 06 T {^}

T Is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints high (overfill) alarm setting.

Enter High Alarm Setting (07): {SOH} 07 T nnnnn {^}

T is the tank number (1 to 4).
nnnnn is the level to set the alarm (5 digits required).

Leading zeroes are required, i.e. 6000 gallons must be entered as 06000. Default

setting is 90% of tank capacity.

Print Low Alarm Setting (08): {SOH} 08 T {^}

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints low alarm setting.

Enter Low Alarm Setting (09): {SOH} 09 T nnnnn {^}

T is the tank number (1 to 4).
nnnnn is the level to set the alarm (5 digits required),

Leading zeroes are required, i.e. 600 gallons must be entered as 00600. Default

setting is 20% of tank capacity.

Print Current Alarm Status (10): {SOH} 10 {^}

Prints the status of all alarms that are currently active in the system. Critical Level,
High Level, Low Level, High Water, Theft, Aux / Switch, Hydrocarbon Leak, and Water Leak
alarms are profiled.

Print Tank Parameters (11): {SOH} 11 T {^}

T is the tank number (1 to 4).

If 0 is entered as the tank number, all tanks are printed.

Prints the setup parameters for the tank. The parameters printed are: Tank number,
tank product name, tank product code, critical level alarm state (high-high or low-low), critical
level alarm setting, high level alarm setting, low level alarm setting, tank capacity, tank
diameter, offset adjustment setting, theft threshold, and delivery threshold.

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Print Offset Adjustment (12): {SOH} 12 T {^}

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the offset adjustment for the tank.

Enter Offset Adjustment (13): {SOH} 13 T {-} nnn {^}

T is the tank number (1 to 4).
nnn is the level to set the offset to (this level is entered in hundredth’s of an inch, i.e.

2 Inches is entered as 200. The offset for a tank may range from -9.99 inches to +9.99 inches.

Leading zeroes are required, i.e. 0.50 inches of positive offset must be entered as

050.

If a negative offset is desired, it is preceded by a minus (–) sign. No sign is required

or allowed for a positive offset.

The offset for the tank is derived as follows:

1. First remove any pressurized or vapor recovery tubes from the dipstick
measurement opening. These tubes can cause a reading to vary by as much as 3 inches
depending upon the pressure in the tank.

2. Take a very careful dipstick reading with an accurate dipstick. Write down the
reading.

3. Write down the fuel height in inches shown by the Gauge.

4. Subtract the Gauge reading from the dipstick reading (Dipstick - Gauge =
Difference) to get the Installation Offset and record it for reference.

Print Product Name (14): {SOH} 14 T {^}

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the name assigned to the tank contents.

Enter Product Code (15): {SOH} 15 T nn {^}

T is the tank number (1 to 4).
nn is the 2-digit number, which represents the name of the product in the tank. See

Appendix C: Tank Product Codes for a list of the built-in product codes and names.

Custom product names may be entered from the RS-232 port and assigned to product
codes 60, 61, 62 and 63. These custom product names may then be assigned to tanks the
same as the built-in product names.

Print Inventory Report (16): {SOH} 16 {^}

Prints the current inventory status of the tanks for levels in inches, and volumes in
gallons as well as ullages (empty space in the tanks) in gallons. Also prints the assigned tank
names, a 3-line system header, and a time and date stamp.

Print System Setup (17): {SOH} 17 {^}

Prints system setup parameters. These parameters are: Serial number of system,
system software revision, clock settings (time, date, day of week), alarm actuation delay time,
leak channel programming, aux / switch input programming, automatic inventory printout
times and RS-232 port setup.

Print Horn Setup (18): {SOH} 18 {^}

Prints the setup and enabling conditions for the horn.

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Program Horn Alarm Conditions (19): {SOH} 19 {-} cc {^}

cc is the 2-digit number of the condition(s) that will actuate the horn. More than one

condition may be set to actuate the horn. If more than one condition is set for the horn, the

programming must be repeated for each condition. See Appendix B: Relay and Horn Alarm
Conditions for a list of the alarm condition code numbers and the default actuation conditions.

A minus sign before a condition number disables that condition.

If cc is entered as 99, the horn programming is set to the default conditions. If cc is

entered as -99, all enabling conditions for the horn are cleared.

If cc is entered as 00, the horn is disabled. All previously programmed enabling

conditions are retained. If cc is entered as -00, the horn is enabled. All previously

programmed enabling conditions for the horn are retained.

Program Horn Shutoff (20): {SOH} 20 t {^}

t is the time for automatic horn shutoff after alarm actuation. There is a 10-minute

default delay built-in between horn actuations for the same condition. This is programmable
with the Alarm Actuation Delay setting (RS-232 command #47).

0 = manual horn shutoff (must be silenced with RESET HORN pushbutton on

enclosure cover). This is the default state.

1 to 7 = the horn will automatically silence after the programmed number of minutes

(may be manually silenced with RESET HORN pushbutton on enclosure cover). This setting
is available in 1-minute increments.

Print Relay Setup (21): {SOH} 21 {^}

Prints the setup conditions for all 8 relays.

Program Relay Alarm Conditions (22): {SOH} 22 N cc {^}

N is the number of the relay that is being programmed. This is relay 1 to relay 8.
cc is the 2-digit number of the condition(s) that will actuate the relay. More than one

condition may be set to actuate the relay. If more than one condition is set for the relay, the

programming must be repeated for each condition. See Appendix B: Relay and Horn Alarm
Conditions for a list of the alarm condition code numbers and the default actuation conditions.

A minus sign before a condition number disables that condition.

If cc is entered as 99, the relay programming is set to the defaults for that relay. If cc

is entered as -99, all enabling conditions for that relay are cleared.

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Program Relay Shutoff (23) : {SOH} 23 N tt {^}

N is the number of the relay that is being programmed. This is relay 1 to relay 8.

tt is the time for automatic relay shutoff after alarm actuation. This setting is available

in 1 minute Increments.

00 = no automatic shutoff (relay remains actuated as long as alarm condition exists.

01 to 15 = will automatically toggle the relay state after the programmed number of

minutes.

Program Relay State (24): {SOH} 24 N s {^}

N is the number of the relay that is being programmed. This is relay 1 to relay 8.

s is the state for an inactive relay output.

0 = normally unenergized (relay energizes after alarm). Relay will stay on as long as

the alarm condition is present.

1 = normally energized (relay de-energizes after alarm). Relay will stay off as long as

the alarm condition is present.

This state can also be used as a power failure indication on a relay not in alarm

condition, or a relay programmed for no alarm conditions.

2 = normally unenergized with reset (relay energizes after alarm). Relay will stay on

as long as the alarm condition is present, or until the horn reset key on the cover is pressed.
.

3 = normally energized with reset (relay de-energizes after alarm). Relay will stay off

as long as the alarm condition is present, or until the horn reset key on the cover is pressed.

This state can also be used as a power failure indication on a relay not in alarm

condition, or a relay programmed for no alarm conditions.

Program Relay Delay (25): {SOH} 25 N t {^}

N is the number of the relay that is being programmed. This is relay 1 to relay 8.

t is the time for relay actuation after alarm condition. This setting is available in 1-

minute increments.

0 = no delay after alarm before relay actuates.

1 to 5 = minute(s) of delay after alarm is recognized before relay actuates.

Print Switch Setup (26): {SOH} 26 {^}

Prints the setup conditions for all 8 switches.

Program Switch State (27): {SOH} 27 N s {^

N is the number of the switch that is being programmed. This is switch 1 to switch 8.

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s is the state of the switch input in a non-alarm condition.
0 = programmed as normally open switch input. Alarm will activate when the switch

closes.

1 = programmed as normally closed switch input. Alarm will activate when the switch

opens.

Print Leak Detection Setup (28): {SOH} 28 {^}

Prints the setup and status conditions for all leak channels.

Program Leak Channel State (29): {SOH} 29 N s {^}

N is the number of the leak channel that is being set-up. This is leak input 1 to leak

input 8.

s is the state of the leak channel.

0 = programmed as leak channel.
1 = programmed as normally open switch input. Alarm will activate when the switch

closes. Sensor must be wired to the R and W (Red and White) terminals.

2 = programmed as normally closed switch input. Alarm will activate when the switch

opens. Sensor must be wired to the R and W (Red and White) terminals.

Calibrate Leak Detection (30): {SOH} 30 {^}

Calibrates the leak detection sensors. The sensors must be clean and dry and in air.
If the sensors are in oil or water, clean and dry them off before calibrating. Any leak channel
without a sensor attached will be recorded as disabled. If a leak sensor is added, this
command must be used. When the system is first started up, this command must be used to
tell the system how many leak sensors are connected.

Clear Leak Detection Latch (31): {SOH} 31 {^}

Clears the alarm memory latch for all leak detector channels.

Reserved (32): {SOH}32{^} Reserved for future use.
Reserved (33): {SOH}33{^} Reserved for future use.

These commands will return an unimplemented command error (Error Code #1).

Warm Reset System (34): {SOH} 34 {^}

Warm resets the system and performs all self-diagnostic system checks. No system
setup parameters are changed by this command. This command is used to return the system
to a known state. This is the equivalent of powering off the system and then powering it on.

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Cold Reset System (35): {SOH} 35 {^}

Cold resets the system and performs all self-diagnostic system checks. Restores all

system programming defaults. The system will respond with "35 O.K."

*****WARNING***** All system setup parameters are reset to their default conditions.
All stored data is cleared from the system memory. Tank charts, tank diameters, tank
capacities and gauge calibrations remain as factory programmed.

**** After cold resetting the system, the system will be in the same state as if a cold
reset is performed at the keypad. This necessitates pressing any key of the keypad to clear
ERROR #8, which is displayed on the system front panel display, in order to re-start normal
operation.

Print Latest Delivery (36): {SOH} 36 T {^}

T Is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the latest stored delivery for the selected tank(s).

Print Stored Deliveries (37): {SOH} 37 T {^}

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints all stored deliveries for the selected tank(s). The system will store the 6 latest
deliveries for each tank.

Clear Stored Deliveries (38): {SOH} 38 {^}

This command will clear the storage memory of all but the latest delivery for each tank.

Print Delivery Threshold (39): {SOH} 39 T {^}

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the number of gallons that the inventory level in the tank must rise in a 2 minute
period in order to trigger a delivery report.

Enter Delivery Threshold (40): {SOH} 40 T nnn {^}

T is the tank number (1 to 4).

nnn is the number of gallons increase in inventory level in a 2 minute period to set as

the threshold for recognizing a delivery for that tank (3 digits required). The number of gallons

may range from 010 to 250

gallons. The threshold set should take into account the resolution
of the level transmitter, the smallest delivery expected and the possibility of wave action in
the tank triggering false deliveries.

Leading zeroes are required, i.e. 50 gallons must be entered as 050.

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Print Critical Alarm State and Setting (41): {SOH} 41 T {^}

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the critical alarm setting and state (low-low or high-high).

Enter Critical Alarm State (42): {SOH}42Ts{^}

T is the tank number (1 to 4).
s is the state of the critical alarm for that tank.

0 = low-low alarm.
1 = high-high alarm. (default)

Enter Critical Alarm Setting (43); {SOH} 43 T nnnnn {^}

T is the tank number (1 to 4).
nnnnn is the level to set the alarm (5 digits required).

Leading zeroes are required, i.e. 6000 gallons must be entered as 06000. Default

setting is 95% of tank capacity.

Print Theft Threshold (44): {SOH} 44 T {^}

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the level threshold set for a theft alarm for that tank.

Enter Theft Threshold (45): {SOH} 45 T nnn {^}

T is the tank number (1 to 4).
nnn is the number of gallons decrease in inventory level to set as the threshold for

recognizing a theft from that tank (3 digits required). The number of gallons may range from

010 to 250 gallons. The threshold set should take into account the resolution of the level

transmitter and the possibility of wave action in the tank triggering false theft alarms.

Leading zeroes are required, i.e. 50 gallons must be entered as 050.

Print Alarm Actuation Delay (46): {SOH} 46 {^}

Prints

the time delay set for recognizing repeated activations of the same alarm
condition. This delay affects only the horn and alarm printouts. The default setting is 10
minutes.

Enter Alarm Actuation Delay (47): {SOH} 47 tt {^}

tt is the time delay set for recognizing repeated activations of the same alarm

condition. This delay affects only the horn and alarm printouts. The default setting is 10

minutes. This setting is available in 1-minute increments.

00 = no delay.
01 to 10 = will delay the activation of the horn and alarm printouts for a repeat of an

alarm until that alarm has been off for the specified time period. Relay activations are not
affected by this command. If a delay is desired in relay activation after an alarm occurs, use
RS-232 command #25, Program Relay Delay.

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Print Relay Latch Status (48): {SOH} 48 N {^}

N is the number of the relay to print. This is relay 1 to relay 8. If 0 is entered as the

tank number, all tanks are printed.

Prints the status of the relay as a latching relay.

Enter Relay Latch Status (49): {SOH} 49 N s {^}

N is the number of the relay to program. This is relay 1 to relay 8.
s is a number from 0 to 8. If the relay is used as a latching relay, it may not be used

for any other alarm function. If the latching state is disabled, the relay may be programmed
as usual for any alarm conditions.

0 = Latch disabled. default
1 = Tank 1 fill.
2 = Tank 1 drain.
3 = Tank 2 fill.
4 = Tank 2 drain.
5 = Tank 3 fill.
6 = Tank 3 drain.
7 = Tank 4 fill.
8 = Tank 4 drain.

The latching relay will use the high and low alarm setpoints for that tank to determine
when to activate and deactivate. The relay may still be programmed to be normally
unenergized or normally energized. A relay programmed for fill will activate at the low-level
alarm setpoint, and stay activated until the high-level alarm setpoint. A relay programmed for
drain will activate at the high-level alarm setpoint, and stay activated until the low-level alarm
setpoint.

The latching relay will be most useful in controlling pumps and motors. Each relay is
rated at 5 Amps @120 VAC maximum load. If the load exceeds the relay rating, the relay
may be interfaced to an external power relay rated for that load. The relay may be used to
control A.C. or D.C. voltages as long as the maximum rating is not exceeded.

When a relay is programmed as a latching relay other alarm actuation conditions do
not apply. Timed shutoff, delayed actuation and remote reset still apply. Previous
programming is retained and will be used again if the latch state is set to disabled (condition

0).
Enter Named Switch Alarms (50): {SOH} 50 N n {^}

N is the number of the switch input

a name is being assigned. This is switch input 1 to

switch input 8.

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PNEUMERCATOR CO., INC. LDE-740 System

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n is a number from 0 to 9 that identifies the name. There are 8 pre-assigned names,

and a fully custom name may also be assigned. The default assignment for all switch inputs

is n=0 (no name).

0 = none. Switch is only identified by number.
1 = sump.
2 = Piping.
3 = Containment.
4 = Interstitial.
5 = Leak.
6 = Reservoir.
7 = Well.
8 = Generator.
9 = custom name.

A custom name (up to 20 characters long) may be entered for any switch input from
the RS-232 Port. See next RS-232 Port command, Enter Custom Switch Name for further
information.

Enter Custom Switch Name (51): {SOH} 51 N xxx...xxx {^}

N is the number of the switch name buffer a custom name is being assigned to. This
is switch name buffer 1 to switch name buffer 8.

xxx...xxx is a custom name that can be up to 20 characters long. Once a name is

assigned to the name buffer, it may be assigned to the switch input by using RS-232
command #50.

Enter Named Leak Alarms (52): {SOH} 52 N n {^}

N is the number of the leak input a name is being assigned. This is leak input 1 to leak
input 8.

n is a number from 0 t o 4, or 9 that identifies the name. There are 4 pre-assigned

names, and a fully custom name may also be assigned. The default assignment for all leak

inputs is n=0 (no name).

0 = none. Leak input is only identified by number.

1 = Sump.

2 = Piping.

3 = Containment.

4 = Interstitial.

9 = custom name.

A custom name (up to 20 characters long) may be entered for any leak input from the
RS-232 Port. See next RS-232 Port command, Enter Custom Leak Name for further
information.

Enter Custom Leak Name (53): {SOH} 53 N xxx...xxx {^}

N is the number of the leak name buffer a custom name is being assigned to. This is
leak name buffer 1 to leak name buffer 8.

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PNEUMERCATOR CO., INC. LDE-740 System

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xxx...xxx is a custom name that can be up to 20 characters long. Once a name is

assigned to the name buffer, it may be assigned to the leak input by using RS-232 command
#52.

Print Named Alarms (54): {SOH} 54 {^}

Prints the names assigned to all 8 switch inputs and all 8 leak inputs. If no name is

assigned to an input, it will be designated by number only.

Enter Generator Switch Status (55): {SOH} 55 N s T {^}

N is the number of the switch input that is being designated as a Standby Generator

Switch. This is switch input 1 to switch input 8.

s is either 0 or 1.
0 = normal switch input.
1 = Standby Generator switch input.

T is the tank number (1 to 4) to which the switch input is assigned.

When a switch input is assigned as a Standby Generator switch for a tank, it is only
used for that purpose. When the input goes to an active state (as determined by the normally
open or closed programming, RS-232 command #27, Program Switch State) no alarm is
activated. Instead, a Generator On Report is printed. When the input deactivates, a
Generator Run Report is printed.

The Generator Run Report lists the starting and ending times, dates, volumes and
product heights as well as the amount of fuel used and the amount left in the tank (ullage).

The last 3 Generator Run Reports for each tank are stored for future reference. See
RS-232 command #58, Print Generator Run History.

Print Alarm History (56): {SOH} 56 {^}

Prints the last 3 occurrences of each alarm. The system records the time and date of
all High Level, Low Level, Critical Level, Theft, High Water, Switch Input, Hydrocarbon Leak,
and Water Leak alarms.

Print Stored Inventory (57): {SOH} 57 {^}

Prints the last stored inventory report for each of the 3 automatic inventory printout
times. See RS-232 command #05, Enter Automatic Inventory Print Time.

Print Generator Run History (58): {SOH} 58 T {^}

T is the tank number (1 to 4). If 0 is entered as the tank number, all tanks are printed.

Prints the last 3 Standby Generator Run Reports for the selected tank(s).

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Enter RS-232 Port Mode (59): {SOH} 59 s {^}

s is a number from 0 to 2 that sets the operating mode for the RS-232 Port.
0 = local port, no echo. In this mode, the RS-232 Port operates independently of the

printer. It may be accessed with a computer connected through a null modem cable.

1 = local port, with echo. In this mode, the RS-232 Port echoes all output directed to

the printer. All alarm reports, inventory reports, and other printouts are echoed to the RS-232
Port. It may be accessed with a computer connected through a null modem cable or a printer
with a standard RS-232 cable. RS-232 commands and their output do not echo to the printer.

2 = modem port. In this mode, modem autoanswer and originate functions are

enabled. Automatic dialout to a phone number may be enabled for alarms and / or automatic
inventory printouts. Regular printouts are not echoed to the RS-232 Port. The port will adapt
its baud rate to the modem connection speed.

When RS-232 Port modes are switched, any programming for inactive modes is

retained.

Enter Dialing Mode (60): {SOH} 60 s {^}

s is either 0 or 1 for the dialing mode for the RS-232 Port when in modem port mode.
0 = Tone dialing (Touch Tone).
1 = Pulse dialing.

Enter Alarm Dialout (61): {SOH} 61 s {^}

s is either 0 or 1 for automatic dialout of a stored phone number when an alarm occurs.

Dialouts will be attempted every 10 minutes for 1 hour until a connection is made.

0 = alarm dialout disabled.
1 = alarm dialout enabled.

Enter Automatic Inventory Dialout (62): {SOH} 62 s {^}

s is a number from 0 to 3 that sets automatic dialout of a stored phone number when

an automatic inventory printout occurs.

0 = alarm dialout disabled.
1 = automatic inventory dialout enabled for automatic inventory printout #1.
2 = automatic inventory dialout enabled for automatic inventory printout #2.
3 = automatic inventory dialout enabled for automatic inventory printout #3.

A minus sign before a number disables that condition.
Dialouts will be attempted every 10 minutes for I hour until a connection is made.

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PNEUMERCATOR CO., INC. LDE-740 System

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Enter Phone Number (63): {SOH} 63 xxx...xxx {^}

xxx...xxx is a phone number to use for alarm and inventory dialouts. This may be up

to 20 characters long. If a delay is desired between digits of a phone number, a COMMA may
be entered in the phone number string. Typically, this delay will be for 1 second (see your
modem documentation). Any access codes, country codes, extensions and long distance
codes should be part of the phone number string.

Print RS-232 Port Setup (64): {SOH} 64 {^}

Prints the setup for the RS-232 Port. The information printed is: Baud rate, parity, start
bit, stop bit, word length, port operating mode, dialing type, autoanswer mode, phone
number, alarm dialout mode and automatic inventory dialout mode.

Enter Custom Tank Name (65): {SOH} 65 NN xxx...xxx {^}

NN is the 2-digit number that represents the code that is being assigned to the custom
product name. It must be either 60 or 61 or 62 or 63.

xxx...xxx is a custom product name. Custom product names (up to 20 characters

long) may be entered from the RS-232 port and assigned to product codes 60, 61, 62 and

63. These custom product names may then be assigned to tanks the same way as the built-in
product names. See RS-232 command #15, Enter Product Code.

Enter Custom Site Header Line 1 (66): {SOH} 66 xxx...xxx {^}
Enter Custom Site Header Line 2 (67): {SOH} 67 xxx...xxx (^)
Enter Custom Site Header Line 3 (68): {SOH} 68 xxx...xxx {^}

Custom site header lines (up to 20 characters each) may be entered from the RS-232
Port. There can be up to 3 header lines. Any header lines not entered are left blank when
printed. All printouts from both the RS-232 Port and the printer start with the custom site
header lines.

Program Switch Alarm Printout (69): {SOH} 69 N s {^}

Allows enabling or disabling printer reports when an Aux / Switch alarm occurs. The
enabling / disabling is done on a per switch basis.

N is the number of the switch that is being programmed. This is switch 1-8.

s is the state of the pri

nter when the switch alarm occurs.

0 = setting will enable a printout for the selected switch. (This is the default). If the

AUTOMATIC ALARM DIALOUT feature (Keypad command #90, or RS-232 command #61)
is enabled, the occurrence of a switch alarm will be transmitted over the RS-232 port.

1 = setting will disable a printout for the selected switch. The switch alarm occurrence

will not be transmitted over the RS-232 port.

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Section 6.6: Packed Data Format

Packed Data Dump (99): {SOH} 99 {^}

The data transmitted is sent in ASCII-coded format with the information in the following
order: header, clock info, alarm statuses, relay statuses, horn status, volume measurements,
product heights, checksum, and footer.

Header (3 bytes):

3 bytes ASCII consisting of 01H (SOH), 0DH and 0AH (new line). The header

is not included in the checksum.

Clock Info (13 bytes):

Month (2 bytes) - 1 to 12, coded as 30H, 31H to 31H, 32H

Day (2 bytes) - 1 to 31, coded as 30H, 31H to 33H, 31H

Year (2 bytes) - 00 to 99, coded as 30H, 30H to 39H, 39H

Hours (2 bytes) - 00 to 23, coded as 30H, 30H to 32H, 33H

Minutes (2 bytes) - 00 to 59, coded as 30H, 30H to 35H, 39H

Seconds (2 bytes) - 00 to 59, coded as 30H, 30H to 35H, 39H

Weekday (1 byte) - 1 to 7, coded as 31H to 37H

(Sunday = 1)

Alarm Statuses (45 bytes):

Each byte is a 0, coded as 30H for OFF, or 1, coded as 31H for ON.
Bytes for non-active tanks or channels are always 0.
The bytes are in the following order:

1. Low alarms (1 to 4) 4 bytes
2, High (overfill) alarms (1 to 4) 4 bytes

3. Critical alarms (1 to 4) 4 bytes

4. High Water alarms (1 to 4) 4 bytes

5. Switch alarms (1 to 8) 8 bytes

6. Hydrocarbon Leak alarms (1 to 8) 8 bytes

7. Water Leak alarms (1 to 8) 8 bytes

8. Theft alarms (1 to 4) 4 bytes

9. Diagnostic Failure alarm 1 bytes

Relay Statuses (8 bytes):

Each byte is a 0, coded as 30H for OFF, or 1, coded as 31H for ON.
OFF designates an unenergized relay,
ON designates an energized relay.

1. Relays (1 to 8): 8 bytes

Horn Status (1 byte):

Byte is a 0, coded as 30H for OFF, or 1, coded as 31H for ON.

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Measurements for the Tanks (32 bytes):

4 Volume measurements and 4 Height measurements are always sent.

Volume (4 bytes for each Tank) - volume is stored in gallons as a hex number 0000H

to 0FFFFH (ranging from 0 to 65535 gallons), which is converted into 4 nibbles,
which are sent as ASCII (9H is sent as 39H).

Inches (4 bytes for each Tank) - level is stored as inches times 100 (ranging from 0.00

inches to 655.35 inches). Data is sent the same way as with volume.

Checksum (4 bytes):

4 bytes ASCII. Each ASCII byte transmitted is added to a 16-bit accumulator
with no overflow or carry or wraparound. The final sum is converted into 4 hex
nibbles, which are converted into ASCII. The header (01H, 0DH, 0AH) and the
footer (0DH, 0AH, 03H) are not included in the checksum.

Footer (3 bytes):

3 bytes ASCII consisting of 0DH, 0AH (new line) and 03H. The footer is not
included in the checksum.

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PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Section 7: Troubleshooting & Servicing

PNEUMERCATOR CO., INC.

1785 Expressway Drive North

Hauppauge, NY 11788

Phone [phone]

Fax [phone]

http://www.pneumercator.com

The Pneumercator LDE-740 system and all components are factory warranted
for a period of 1 year from the date of shipment. No materials should be returned to
the factory without first getting a Returned Materials Authorization number from
Pneumercator. All materials returned should be marked with this R.M.A. number.

Because of the intrinsically safe operation of the system no field repairs other
than fuse changing should be attempted. All repairs should be done only at the factory
or at a factory authorized repair center.

SYMPTOM: Display blank and no lights are on.

ACTION: Make sure that 120 VAC power is connected to the power connection
terminal block and that the power is turned on. With power off, check the fuse labeled
1/4 AMP SLOW BLOW to make sure that it is not blown. If the fuse is blown, replace
only with a 1/4 Amp, 3AG Slo-Blo fuse. There should be +5 VDC open circuit (with no
wires attached) between TB4 position 1 and position 3. If system still does not respond
call factory for servicing.

SYMPTOM: Display flashes.

ACTION: Move the theft switch labeled S1 on the display circuit board to the NORMAL
position.

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SYMPTOM: System always displays the minimum or maximum gaugeable setting no
matter how much product is in the tank.
SYMPTOM : System displays a negative reading or Error Code 9 (volume
measurement under range).
SYMPTOM : System displays a reading greater than full capacity or Error Code 7
(volume measurement over range).

ACTION: Make sure that all wires are connected properly from the tank level
transmitter to the tank input (TB2). Make sure that there are no shorted or open wires.
Make sure that there is no water in a wire splice or in a transmitter housing. See the
transmitter troubleshooting section. Make sure that the gauge calibrations are set
properly (see keypad commands numbers 49 and 50).
If system still does not respond call factory for servicing.

SYMPTOM: Switch light is always on, or goes on when it shouldn't.

ACTION: Make sure that Switch is working properly and that the switch input is
programmed for the proper state. Make sure that the switch has no current leakage
in an open state.
If system still does not respond call factory for servicing.

SYMPTOM: Leak detection channel gives false water alarm.

LIGHT INDICATIONS

Dry Water Hydrocarbon Meaning
off on off water alarm

ACTION: Check to make sure that the sensor is in contact only with air. Make sure
that the ground wire (marked B) and the sensor input wire (marked W) have continuity
from the sensor to the alarm console. Make sure that the sensor input wire (marked
W) is not shorted to power. Place system in Calibrate mode with the sensor in air. If
sensor still does not work properly call factory for servicing.

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SYMPTOM: Leak detection channel shows no lights.

LIGHT INDICATIONS

Dry Water Hydrocarbon Meaning
off off off no sensor attached

ACTION: This condition indicates that when the leak sensors were calibrated either
no sensor was connected to that input or a defective or miswired sensor was
connected to that input. If a new sensor is connected to the input, use the keypad or
RS-232 command to calibrate the leak detection channels. If a leak input still shows
no lights, the connected sensor is probably wired incorrectly or is defective.

SYMPTOM: Leak detection channel shows all 3 lights on.

LIGHT INDICATIONS

Dry Water Hydrocarbon Meaning
on on on sensor failure

ACTION: This condition indicates that when the leak sensor was calibrated it was
working correctly and either has now failed, or the wiring has become defective. Use
the keypad or RS-232 command to calibrate the leak detection channels. If that leak
input now shows no lights, the connected sensor is probably wired incorrectly or is
defective.

SYMPTOM: Leak detection channel gives false alarms.

ACTION: Check to make sure that the sensor is in contact only with air. Pull sensor
from installation and make sure that it is not fouled or clogged. If sensor is fouled or
clogged, clean with soap and water solution or a mild solvent and dry and unclog with
compressed air. Place system in Calibrate mode with the sensor in air. Check all
wiring for continuity, proper connections and make sure that there are no shorts. If
sensor still does not work properly call factory for servicing.

When the sensor has been immersed in water it takes a period of time for the
sensor to drain completely and dry. During this time the sensor will oscillate between
water / hydrocarbon and hydrocarbon / air readings. This may cause the hydrocarbon
or water alarm to latch into the system memory. This may be cleared when the sensor
is dry and in air by calibrating the leak detection sensor.

Testing the Gauge

In order to verify that the gauge is properly reading the tank unit first shut off
power to the gauge. Then disconnect the tank unit from the barrier block. A

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potentiometer (variable resistor) of a value of about one thousand to ten thousand
ohms (the exact value is not critical) should be connected to the barrier block. One
end terminal of the potentiometer is connected to terminal R (Red), the other end
terminal is connected to terminal B (Black), and the middle terminal of the
potentiometer (the wiper) is connected to terminal W (White). The gauge should then
be powered up again. The gauge readings will vary as the position of the
potentiometer wiper is changed. At the extreme ends of the potentiometer's rotational
angle the gauge readings may show a negative reading or a reading greater than the
tank's capacity, but the potentiometer can be used to move the gauge readings over
the full span of possible volumes.

*** The readings from the potentiometer should not be used to calibrate the gauge, or
to judge the accuracy of the gauge, as the potentiometer is only an approximation of
the tank unit, which is custom made and calibrated for the particular tank.

Testing the Tank Level Transmitter

In order to test the tank level transmitter, it must be disconnected from the
gauge unit. Always shut off power to the gauge when connecting or disconnecting the
tank units, the power cable, and any wires to the optional switches. With the tank unit
disconnected from the gauge, use an ohmmeter to measure the resistance between
the Red and the Black wires of the tank unit. The measurement should be 2000 on
the 2-501 tank transmitter. The resistance of the 2-412 is 72.5 per inch of sensing
length. If the readings are incorrect, they should be repeated where the tank unit is
joined to the conduit wires. These readings should be made with the conduit wires
disconnected from the tank unit. If the readings are now correct, then there is a
problem with the conduit wires. Always make sure that the wires running through the
conduit follow the proper color-coding. Incorrect readings will result if the color-coding
is not followed.

2-412: With the float at the bottom and the top of travel, the reading between
White to Black and White to Red respectively is 0. The reading between the Black
and White wires will increase as the float moves up, and will be a ratio of the
percentage of float travel to overall sensing length.
Example: Sensing length = 80 inches.

Float travel = 20 inches.
Overall resistance = 5800 (Red to Black).

Answer: Black to White resistance = 1450.

Red to White resistance = 4350.

If the float has been removed from the tube of the 2-412, make sure that it is
replaced facing in the same orientation. The magnet in the float will only work if it is
facing in the correct orientation.

The interior of the 2-412 is hermetically sealed and no field repairs can be made
on it. The 2-501 contains no parts that can be field repaired.

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PNEUMERCATOR CO., INC. LDE-740 System

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2-501: With the float arm at bottom of travel, Black to White is 0. Black to Red
is always 2000. The Black to White reading will increase as the float moves up, and
will be a ratio of the percentage of float arm travel to overall float arm travel. The Red

to White resistance will vary from unit to unit, and should be measured with the float
arm at the top of travel.
Example: Overall float arm travel = 80 inches.

Example float arm travel = 20 inches.
Overall resistance = 2000.
Red to White (at top of travel) = 280 (measured).
Black to White span = 1720 (calculated).

Answer Black to White resistance = 430.

Red to White resistance = 1290.

Make sure that all splices are contained in waterproof junction boxes or are
potted or sealed to be waterproof. Part number 10585-3 is an available wiring
waterproofing kit. Make sure that no water can enter the housing of the 2-412 tank
unit.

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PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Figure 9 - 2-412 Installation

STEPS FOR A TROUBLE FREE INSTALLATION

STEP 1 - EXAMINE THE SHIPMENT

1.1 Each system consists of two main components, which are packed separately, the
transmitter float assembly and the indicator unit. Make sure you have both parts. If cartons
are missing or damaged, have the fact noted on the delivery receipts to permit a claim to be
filed against the transportation company.

1.2 Match the transmitter float assembly Serial No. with the Serial No. on indicating unit to
insure compatibility.

1.3 The transmitter float assembly should be checked for damage, which may have occurred
during shipping. The float switch should move freely from the bottom stop to the top stop on
the rod. If the float can be rotated on the rod, then the float guides have been damaged. If any
problems arise, contact the factory.

DO NOT ATTEMPT TO INSTALL DAMAGED UNITS.

STEP 2 - MAKE SURE THE SYSTEM MATCHES YOUR JOB

2.1 Compare the actual tank dimensions and capacity with the tank dimensions and capacity
on the packing slip and the transmitter mounting tag to insure compatibility.

2.2 Standard construction is suitable for most petroleum products.

2.3 For potentially corrosive liquids, verify the liquid's compatibility with stainless steel and
Teflon. When the unit is supplied with a water switch, verify the compatibility of the liquid with
nitrophyl.

2.4 Verify that the tank is set level. To obtain accurate readings from a tilted tank, the indicator
must be ordered with a special calibration.

BULLETIN 104-LDE-740

Page 79 of 104

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Figure 9 - 2-412 Installation (Continued)

STEP 3 - SELECT THE CORRECT LOCATION FOR THE INSTALLATION OF THE
TRANSMITTER FLOAT ASSEMBLY

3.1 The transmitter float assembly should be installed through a 4” NPT half coupling in the
top of the tank as shown in figure 9-1. It is recommended that a strike plate be situated directly
below the coupling. If the unit is to be standpipe mounted, it should have been ordered for the
special mounting height (*) and installed as shown in figure 9-2.

3.2 When the tank is indoors, sufficient clearance must be provided between tank and ceiling
to permit installation and removal of the transmitter float assembly.

3.3 When the tank is underground, a suitable chamber and cover should be provided to permit
installation and removal of the transmitter float assembly should it ever be required. This is
especially important when the tank is to be covered with pavement or concrete. Do not bury
tank unit.

4" X 1" BUSHING
(BY P.C.O.)

4" NPT COUPLING
(BY CUSTOM ER)

4" NPT SCHEDULE
40 PIPE (BY CUST.)

4" NPT
OPENING

TAN K

O.D.

STANDPIPE MOUNT

(BUSHING)

MTG.

HT.

1-1/16 TYP.

FIG. 9-1

STANDARD TANK MOUNT

(BUSHING)

4" X 1" BUSHING
(BY P.C.O.)

4" NPT OPENING

TAN K

O.D.

STEP 4 - INSTALL WITH CARE

4.1 Screw the mounting bushing 1-1/16” into the proper opening in
the top of the tank (see figure 9-1). There should be a clearance of at
least 2.0" between the bottom of the probe and the bottom of the tank
(see figure 9-3).

4.2 When using a standpipe, screw the mounting bushing 1-1/16” into
the 4” NPT coupling on top of the standpipe (see figure 9-2). There
should be a clearance of at least 2.0” between the bottom of the
probe and the bottom of the tank (see figure 9-3).

FIG. 9-2

FIG. 9-3

1-1/16 T YP.

* MTG.

HT.

BULLETIN 104-LDE-740

3" NOM. (2" MIN.)

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Figure 10 - 2-501 Installation

STEPS FOR A TROUBLE FREE INSTALLATION

1. Examine the shipment

2. Make sure the system matches your job

3. Select the correct location for the transmitter

4. Install the transmitter float assembly with care

STEP 1 - EXAMINE THE SHIPMENT

1.1 The system consists of two components, which are packed separately, the transmitter and the indicator. Make
sure you have both parts. If cartons are missing or damaged note the delivery receipts to permit a claim to be filed
against the transportation company.

DO NOT ATTEMPT TO INSTALL DAMAGED UNITS.

1.2 Match the serial no.'s on the transmitter and indicator to insure compatibility.

STEP 2 - MAKE SURE THE SYSTEM MATCHES YOUR JOB

2.1 Compare the dimensions and capacity on the packing slip with the tank drawing to insure compatibility.

2.2 Check that the tank is vented to atmosphere unless the order shows the system was designed for a pressurized
tank.

2.3 Verify that the tank contents will not corrode the unit's wetted parts (Alum., Brass, Buna-N, nylon, 303
Stainless). Standard construction is suitable for most petroleum products.

2.4 Verify that the tank is set level. (Tilted tanks require special calibration.)

SEE DWG.
SUPPLIED
FOR PROPER
DIMENSION

CENTER

LINE

OF

TAN K

TRANSMITTER

FIG 10-1

FLOAT

10-32 MTG.

SCREWS

FLANGE
NIPPLE
ASSY.

FIG 10-1A

NOTE: THE FLOAT ARM SHOULD SWING UPWARDS

SPLICE
KIT

TOWARDS THE CONNECTOR ON THE HOUSING.

BULLETIN 105-LDE-740

Page 81 of 104

PNEUMERCATOR CO., INC. LDE-740 System

E

G

D

Operation and Installation Manual

Figure 10 - 2-501 Installation (Continued)

STEP 3 - SELECT THE CORRECT LOCATION FOR THE TRANSMITTER

3.1 Standard installation requires a 2” half coupling in the top of the tank. The fulcrum pipe will then reach the
mid-point of tank as required for accurate measurement If the transmitter is to be installed through a manway or a
riser, it must be ordered with an extra long fulcrum pipe. THERE IS NO WAY TO ADJUST THE SYSTEM FOR
ACCURATE GAUGING IF THE PIVOT LEVER IS NOT CORRECTLY POSITIONED. (See Figure 10-1 & 10-2)

3.2 The float arm must swing in an arc along the axis of the tank without hitting the end of the tank or other
obstructions and not extend under manways or fill lines.

3.3 When tank is indoors, sufficient clearance must be provided to permit installation of the fulcrum pipe, which is
approximately one-half the tank diameter plus 11 inches.

3.4 When the tank is underground or covered by pavement, a chamber should be provided to permit access to the
transmitter. Covers to access chambers should provide clearance for installation and removal of the fulcrum pipe.
(See 3.3 above).

FULCRUM PI P

PIVOT LEVER

Fig. 10-2

FLOAT ARM

HOLE IN FLOAT A R M

KNOTTED ENDS OF
LOOPED CORD

FLANGE / NIPPLE

STROKE SETTIN

CORD

KNOT

PULL FLOAT UP WITH CORD TO
PREVENT JAMMING ONTA N K
BOTTOM

SEALING PLUG

ATTACHTANK END
HOUSING TO NIPPLE
FLANGE WITH FIVE
SCREWS

Fig. 10-2 A

A

TAN K

BOTTOM

B

Fig. 10-3

C

STEP 4 - INSTALL THE TRANSMITTER WITH CARE

4.1 The transmitter should be installed when the tank is empty. Although it is possible to install when the liquid is
below the tank mid-point, there is no way to verify factory settings and adjustments.

4.2 The flange / nipple has been pre-removed to protect the float arm assembly during installation. DO NOT
re-attach until after the float arm assembly is in the tank.

4.3 Screw the flange / nipple into the proper tank opening. Align flange so float will rise and fall along the centerline
of tank when transmitter assembly is installed. (Flange must be level). *Position gasket on flange using a suitable
sealing compound on both sides.

NOTE: THE DIMENSION BETWEEN THE TANK TOP AND TOP OF THE FLANGE (SEE ATTACHED TAG)
MUST BE EXACT FOR THE PIVOT TO REACH THE MIDPOINT OF THE TANK AS REQUIRED FOR
ACCURATE GAUGING.

4.4 Attach the float am to the pivot lever using the two bolts furnished. Insert the stroke setting cord through hole
in float arm, then through hole in the nipple and knot ends together. (NOTE: MUST BE RE-INSTALLED UPON
COMPLETION OF INSTALLATION.) (See Figures. 10-2 & 10-2A)

4.5 Insert the transmitter float assembly through the flange / nipple. (See Figure 10-3.) Note: the direction of float
travel is toward the cable in the transmitter housing. DO NOT LET FLOAT ARM SWING BACKWARDS DURING
INSTALLATION!

4.6 Attach the transmitter float assembly to the flange / nipple using the screws from 4.2. Tighten all five screws
evenly to assure a tight seal. (See Fig. 10-1A).

4.7 Raise and lower the float arm with the stroke setting cord. Make certain that the float and arm move freely (DO
NOT FORCE) from bottom to top of the tank unobstructed.

BULLETIN 105-LDE-740

Page 82 of 104

PNEUMERCATOR CO., INC. LDE-740 System

APPLICATION

USED ONNEXT ASSY

CABLE MEASUREMENT

TANK

SIZE

4 FT.
4 FT.
6 FT.
6 FT.
8 FT.

8 FT.
10 FT.
10 FT.
12 FT.

Page 83 of 104

12 FT.

MANUFACTURER/

BRAND

OWENS CORNING DWT
XERXES DWT
OWENS CORNING DWT
XERXES DWT
OWENS CORNING DWT
XERXES DWT
OWENS CORNING DWT
XERXES DWT
OWENS CORNING DWT
XERXES DWT

INSTALLATION INSTRUCTIONS

1. IF YOUR TANK MANUFACTURER/BRAND IS NOT LISTED IN THE TABLE ABOVE,

CALCULATE YOUR CABLE MEASUREMENT BY USING

(

CIRCUMFERENCE DIVIDE BY TWO). 'D' IS THE DIAMETER OF THE TANK.

2. UNROLL THE SENSOR / CABLE ASSEMBLY. MEASURE FROM THE SENSOR'S
BOTTOM UP THE CABLE UNTIL YOU REACH YOUR CABLE MEASUREMENT
(FROM INSTRUCTION 2) AND MARK THE CABLE AT THAT POINT.

3. FEED THE CABLE THROUGH THE BOTTOM OF THE MOUNTING BUSHING AND
CORD CONNECTOR UNTIL YOU SEE THE MARK ON THE CABLE. INSERT THE
SENSOR AND CABLE THROUGH THE TANK OPENING.

4. SCREW IN THE MOUNTING BUSHING AND CONNECTOR.

5. TIGHTEN THE CONNECTOR WITH THE CABLE MARK IN THE CORRECT
POSITION.

6. USING THE PROPER CONSOLE WIRING DRAWING, WIRE TO THE JUNCTION
BOX OR SPLICE KIT AND THEN TO THE CONSOLE. FOLLOW LOCAL WIRING
CODES AND EXPLOSION-HAZARD ELECTRICAL PRACTICES IF REQUIRED.

MARK

CABLE AT

81"

118"

149.5"

193.5"

222"

(REFER TO FIGURE 1)

MEASUREMENT



D÷2

CABLE

FIGURE 1

MARK ON CABLE

CORD CONNECTOR
(SUPPLIED)

MOUNTING
BUSHING
(BY CUST.)

OPENING
2" MIN.

18/3 CABLE

ELECTRONIC
SENSOR

BOTTOM

NOTES:

1. MANHOLE:

1.1) SUPPLIED BY CUSTOMER .

2. JUNCTION BOX:

2.1) SUPPLIED BY CUSTOMER . TO BE NEMA 4 OR BETTER.

2.2) OPTIONAL SPLICE KIT IS AVAILABLE (P/N 10585-3).

3. SENSOR:

3.1) SENSOR IS SUPPLIED AS AN ASSEMBLY WITH 25 FT. OF CABLE ATTACHED.

3.2) MOUNTING REQUIRES A 2" MINIMUM OPENING. TWO 1/2" NPT LIQUID-TITE CORD
CONNECTORS ARE SUPPLIED.

3.3) CABLE IS 18/3.

PART NUMBER:

UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE I N INCHES

FRACTIONS

± 1/64

MATERIAL:

FINISH:

DECIMALS

.XX ±.01
.XXX ±.005

N/A

N/A

N/A

ANGLES

± 0°30'

DRAWN BY

CHECKED BY

REV APP.BYDATEDESCRIPTION

SEE REVISION SHEET FO R THIS AND OTHER REVISION

B

HISTORY

CONDUIT

(BY CUST.)

MOUNTING

BUSHING

(BY CUST.)

25 FT. CABLE

(SUPPLIED)

ANNULAR SPACE INSTALLATION

DATEAPPROVALS

DESCRIPTION

R. KHARE

03/23/93

SIZE

SCALE

B

NONE

REVISIONS

JUNCTION BOX-NEMA 4 OR
BETTER (BY CUSTOMER)

1/2" NPT LIQUID-TITE
CORD CONNECTORS
(SUPPLIED)

MODEL 9-901

PNEUMERCATOR

Liquid Level Control Systems

INSTALLATION DRAWING

MODEL 9-901 SENSOR

CAGE CODE

47876

DO NOT SCALE DRA WING

04/16/13 CHR

MANHOLE (BY CUST.)

ANNULAR
SPACE

ELECTRONIC
SENSOR

DRAWING NO.

10468 B

SHEET

Operation and Installation Manual

Figure11 - 9-901 Installation

REV.

1 OF 1

PNEUMERCATOR CO., INC. LDE-740 System

APPLICATION

ELECTRONIC

SENSOR

DOUBLE

USED ONNEXT ASSY

CONDUIT

(BY CUST.)

1/2" NPT

LIQUID-T ITE

CORD CON.
(SUPPLIE D)

25 FT. CABLE

(SUPPLIED)

WALL
TANK

PIPING SUMP OR

MANHOLE INSTALLATION

REV APP.BYDATEDESCRIPTION

SEE REVISION SHEET FOR THIS AND OTHER REVISION

B

HISTORY

MODEL 9-902

CONDUIT

(BY CUST.)

MOUNTING

(BY CUST.)

25 FT. CABLE

(SUPPLIED)

MONITORING

ELECTRONIC

JUNCTION BOX-NEM A 4 OR
BETTER (BY CUSTOMER)

BUSHING

PIPE

SENSOR

MONITORING PIPE INSTALLATION

MODEL 9-902

1/2" NPT LIQUID-TITE
CORD CON NECTOR
(SUPPLIED)

MANHOLE
(BY CUST.)

INNER
TANK

ANNULAR
SPACE

CONDUIT

(BY CUST.)

MOUNTING

BUSHING

(BY CUST.)

25 FT. CABLE

(SUPPLIED)

CONTAINMENT

SUMP

ELECTRONIC

SENSOR

JUNCTION BOX-NEMA 4 OR
BETTER (BY CUSTOMER)

1/2" NPT LIQUID-TITE
CORD CON NECTOR
(SUPPLIED)

MANHOLE (BY CUST.)

TANK

MODEL 9-902

SUMP INSTALLATION

Page 84 of 104

CONCRETE

CONTAINMENT

INSTALLATION INSTRUCTIONS

1.

MEASURE YOUR MOUNTING HEIGHT . (THE DISTANCE FROM THE TOP OF
THE OPENING TO THE BOTTOM OF THE MONITORING PIPE OR
CONTAINMENT SUMP.

2. YOUR MOUNTING HEIGHT + "A" - .50 IS YOUR CABLE MEASUREM ENT.

3. UNROLL THE SENSOR / CABLE ASSEMBLY. MEASURE F ROM THE SENSOR'S
BOTTOM UP THE CABLE UNTIL YOU REACH YOUR CABLE MEASUREMENT
(FROM INSTRUCTION 2) AND MARK THE CABLE AT THAT POINT.

4. FEED THE CABLE THROUGH THE BOTTOM OF THE MOUNTING BUSHING AND
CORD CONNECTOR UNTIL YOU SEE THE MARK ON THE CABLE. INSERTTHE
SENSOR AND CABLE THROUGH THE TANK OPENING.

5. SCREW IN THE MOUNTING BUSHING AND CONNECTOR.

6. TIGHTEN THE CONNECTOR WITH THE CABLE MARK IN THE CORRECT
POSITION.

7. USING THE PROPER CONSOLE WIRING DRAWING, WIRE TO THE JUNCTION
BOX OR SPLICE KIT AND THEN TO THE CONSOLE. FOLLOW LOCAL WIRING
CODES AND EXPLOSION-HAZARD ELECTRICAL PRACTICES IF REQUIRED.

25 FT. CABLE

(SUPPLI ED)

MONITORING

PIPE

LEAK

SWITCH

(REFER TO FIGURE 1)

TANK

MODEL 9-902

ABOVE GROUND INSTALLATION

CABLE

MEASUREMENT

MTG.

.50

NOTES:

1. MANHOLE:

1.1) SUPPLIED BY CUSTOMER.

2. JUNCTION BOX:

2.1) SUPPLIED BY CUSTOMER. TO BE NEMA 4 OR BETTER.

2.2) OPTIONAL SPLICE KIT IS AVAILABLE (P/N 10585-3).

3. SENSOR:

3.1) SENSOR IS SUPPLIED AS AN ASSEMBLY WITH 25 FT. OF CABLE ATTACHED.

3.2) MOUNTING REQUIRES A 2" MINIMUM OPENING. TWO 1/2" NPT LIQUID-TITE CORD
CONNECTORS ARE SUPPLIED.

3.3) CABLE IS 18/3.

PART NUMBER:

N/A

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES

FRACTIONS

± 1/64

MATERIAL:

FINISH:

DECIMALS
.XX ±.01
.XXX ±.005

N/A

N/A

ANGLES

± 0°30'

DRAWN BY

CHECKED BY

R. KHARE

DATEAPPROVALS

03/23/93

DESCRIPTION

SIZE

SCALE

C

NONE

REVISIONS

JUNCTION BOX-NEM A 4
OR BETTER (BY CUST.)

CUSTOMERS
EQUIPMENT

PIPING SUMP
(BY CUST.)

MANWAY
(BY CUST.)

"A"

HT.

FIGURE 1

PNEUMERCATOR

Liquid Level Control Systems

INSTALLATION DRAWING

MODEL 9-902 SENS OR

CAGE CODE

47876

DO NOT SCALE DRAWI NG

04/16/13 CHR

MARK O N CABLE

CORD CONNECTOR
(SUPPLIE D)

MOUNTING
BUSHING
(BY CUST.)

OPENING
2" MIN.

18/3 CABLE

ELECTRONIC
SENSOR

BOTTOM

DRAWING NO.

1046 9 B

SHEET

Figure 12 - 9-902 Installation

Operation and Installation Manual

REV.

1 OF 1

PNEUMERCATOR CO., INC. LDE-740 System

APPLICATI ON

MARK ON CABLE

CORD CONNECTOR

1.0"

CABLE

MEASUREMENT

MTG.

HT.

Page 85 of 104

(SUPPLIED)

LEAK TUBE
COVER

LEAK TUBE

18/3 CABLE

ELECTRONIC
SENSOR

BOTTOM

FIGURE 1

INSTALLATION INSTRUCTIONS

1.

MEASUREYOUR MOUNTING HEIGHT. (THE DISTANCE FROM THE TOP TO THE

BOTTOM OF THE LEAK DETECTION TUBE).

2. ADD 1" TO YOUR MOUNTING HEIGHT TO FIND YOUR CABLE MEASUREMENT.

3. UNROLL THE SENSOR / CABLE ASSEMBLY. MEASURE FROM THE SENSOR'S
BOTTOM UP THE CABLE UNTIL YOU REACH YOUR CABLE MEASUREMENT
(FROM INSTRUCTION 2) AND MARK THE CABLE AT THAT POINT.

4. FEED THE CABLE THROUGH THE BOTTOM OF THE MOUNTING BUSHING AND
CORD CONNECTOR UNTIL YOU SEE THE MARK ON THE CABLE. INSERTTHE
SENSOR AND CABLE THROUGH THE TANK OPENING.

5. SCREW IN THE MOUNTING BUSHING AND CONNECTOR.

6. TIGHTEN THE CONNECTOR WITH THE CABLE MARK IN THE CORRECT
POSITION.

7. USING THE PROPER CONSOLE WIRING DRAWING, WIRE TO THE JUNCTION
BOX OR SPLICE KIT AND THEN TO THE CONSOLE. FOLLOW LOCAL WIRING
CODES AND EXPLOSION-HAZARD ELECTRICAL PRACTICES IF REQUIRED.

(REFER TO FIGURE 1)

NOTES:

1. MANHOLE:

1.1) SUPPLIED BY CUSTOMER.

2. JUNCTION BOX:

2.1) SUPPLIED BY CUSTOMER. TO BE NEMA 4 OR BETTER.

2.2) OPTIONAL SPLICE KIT IS AVAILABLE (P/N 10585-3).

3. SENSOR:

3.1) SENSOR IS SUPPLIED AS AN ASSEMBLY WITH 25 FT. OF CABLE ATTACHED.

3.2) MOUNTING REQUIRES A 2" MINIMUM OPENING. TWO 1/2" NPT L IQUID-TITE CORD
CONNECTORS ARE SUPPLIED.

3.3) CABLE IS 18/3.

PART NUMBER:

UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES

DECIMALS

FRACTIONS

.XX ±.01

± 1/64

.XXX ±.005

MATERIAL:

N/A

FINISH:

N/A

USED ONNEXT ASSY

INNER T ANK

N/A

ANGLES

± 0°30'

ANNULAR
SPACE

DRAWN BY

CHECKED BY

REV APP.BYDATEDESCRIPTION

SEE REVISION SHEET FOR THI S AND OTHER REVISION

B

HISTORY

STEEL

CONVAULT INSTALLATION

DATEAPPRO VALS

R. KHARE

03/23/93

MODEL 9-903

DESCRIPTION

SIZE

B

NONE

SCALE

REVISIONS

TO JUNCT ION

BOX

1/2" NPT LIQUID-TITE
CORD CONNECTOR
(SUPPLIED)

PNEUMERCATOR

Liquid Level Control Systems

INSTALLATION DRAWING

MODEL 9-903 SENSOR

CAGE CODE

47876

DO NOT SCALE DRAWING

04/16/1 3 CHR

CONCRETE
OUTER TANK

LEAK DETECTOR
TUBE

25 FT. SENSOR CABLE
(SUPPLIED)

ELECTRONIC
SENSOR

DRAWING NO.

10470 B

Figure 13 - 9-903 Installation

Operation and Installation Manual

REV.

SHEET

1 OF 1

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Figure 14 - Main Circuit Board Layout

J2

J1

J3

U9

U15

R1

C3

U1

J5

U7

U8

U10

U16

U2

C1

C2

C4

C5

U4

C8

C19

U17

U12

C18

U11

C6

U3

C9

U5

RFC1

C7

U6

C10

C20

C21

U13

RN1

VR1

D1

C11

C12

U14

C13

C14

C22

C23

C24

VR2

D2

C15

BR1

C17

C16

RFC2

8

5

PNEUMERCATOR CO. INC.

T1

4

1

© 1993

ASSY 900400-
REV A SERNO



D21R28D22R29D23R30D24R31D25R32D26R33D27R34D28R35D29R36D30R37D31R38D32R39D33R40D34R41D35R42D36R43D37R44D38

U24







R46



R47



R48R49

TB1 1 2 TB2 1 4 7 1013161922 TB31 3 5 7 9 111315 TB41 4 7 1013161922 TB5 1 4 710

EARTH

GROUN D

1RW+RW+RW+RW+221 15 22RRRRRRRR 1 10NC NC NC NC NC NC NC NC110HOTNGND1++++++++
2WW-WW-WW-WW-232 16 23WWWWWWWW 2 11CCCC CCCC2112--------
3B BBB24 24BBBBBBBB 3 12NO NO NO NO NO NO NO NO3123

EARTH
GND.
T.B.

U25

123456781 2 3 4 12345678 1234 5678

SWITCHTANK LEAK O UTPUT

GAUGING
SENSORS
T.B.

U26

SWITCH

R45

U27

LEAK
SENSORS
T.B.

INPUTS
T.B.

TB6 1 4 7 10

RELAY
CONTACTS
T.B .

1/4 AMP SLOW BLOW

E1

TB7 1 2 3

VAC

J4

F19

3AG 250V

FUSE

C36

E2

120 VAC
POWER
T.B.

Page 86 of 104

PNEUMERCATOR CO., INC. LDE-740 System

E

Operation and Installation Manual

Figure 15 - Display Circuit Board Layout

NORMAL/THEFT
MODE SWITCH

NORM

JP1

THEFT

JP3

GALLONS DSP

D1

INCHES DSP

D2

WATER DSP

D3

ALARM DSP

D4

C2

C1

THEFT MOD
DATA RECALL
PUSHBUTTON

S2S1

NORM
DATA

RECAL

LEAK ALERT

U6 U5 U4 U3 U2

RN4

U1

TANK ALERT

U8

U7

1

D172D183D194D205D216D227D238D24

RN1

D91D102D113D12

PNEUMERCATOR CO. INC.
ASSY 900399-1 REV A
SERNO

RN3

OIL
LEAK

WATER
LEAK

AUX
ALERT

4

DRY
D16

D14

RN2

D15

D13

HIGH

D5

ALARM

LOW

D6

ALARM

CRITICAL

D8

ALARM

WATER

D7

ALARM

©

1993

JP2

Page 87 of 104

PNEUMERCATOR CO., INC. LDE-740 System

APPLICATION

REV APP.BYDATEDESCRIPTION

USED ONNEXT ASSY

C

SEE REVISION SHEET FOR THIS AND OTHER REVISION
HISTORY

REVISIONS

08/25/94 CHR

INDICATOR

LISTED INDICATOR MODEL NUMBERS

MODEL LDE-740

INTRINSIC SAF ETY COVER/BARRIER
MUST REMAIN IN PLACE.

MODEL LDE-740P

HAZARDOUS HAZARDOUS

AREA AREA

CLASS I,
GROUPS
A,B,C,D

INTRINSICALLY

SAFE WIRING
(SEE NOTE 2)

Page 88 of 104

TRANSMITTER

(2-412 OR 2-501)

TYP. 4-PLACES

RED

WHT

BLK

SWITCH (LS-600

SEE NOTE 5)

TYP. 8-PLACES

TYPICAL 8-PLACES

BLU

ORN

LEAK SENSOR

(9-90 )

BLU

RED

BLU

WHT

NON

(SEE NOTE 1)

VAPOR SEAL

(AS REQ'D.)

BLK

RED

BLU

RED

NOTES:

1. INDICATOR MOUNTING: MOUNT AS CLOSE AS PRACTICAL TO DIVIDINGBOUNDARY OF THE HAZARDOUS AND NON-
HAZARDOUS AREAS. NEVER MOUNT INSIDE THE HAZARDOUS AREA.

2. INTRINSICALLY SAFE INPUT WIRING: WIRE AND INSTALL IN ACCORDANCE WITH ARTICLE 504 OF NATIONAL
ELECTRICAL CODE ANSI/NFPA 70. USE STANDARD 2 AND 3 CONDUCTOR18 AWG WIRE. TRANSMITTERS AND
SWITCHES UP TO 2200 FEET, LEAK SENSORS UP TO 1000 FEET. WHENT RANSMITTER HAS A BUILT IN WAT ER
SWITCH (2-412), THE ORANGE TRANSMITTER WIRE WILL BE CONNECTED TO THE W+ TERMINAL ON THE IND-
ICATOR, THE BLUE TRANSMITTER WIRE WILL BE CONNECTED TO THE W- TERMINAL ON THE INDICATOR. TER-
MINAL BLOCKS WILL ACCEPT WIRES UP TO A MAXIMUM OF 14 AWG.

3. DRY CONTACT SWITCH OUTPUT WIRING: WIRE TO COMMON AND EITHERNORMALLY OPEN OR NORMALLY CLOSED
FOR DESIRED SWITCH CONTACT. OUTPUT RATED 5 AMPS AT 120 VAC.( VOLTAGE MUST BE LESS THAN 120 VAC).

4. WARNING: TO INSURE INTRINSIC SAFETY, A 12 AWG WIRE MUST BE CONNECTED TO EACH TERMINAL ON THE
EARTH GROUND TERMINAL BLOCK. EACH WIRE MUST THEN BE CONNECTED TO THE SYSTEM EARTH GROUND. THE
RESISTANCE BET WEEN THE EARTH GROUND TERMINAL BLOCK AND EARTHGROUND SHALL BE LESS T HAN 1 OHM.

5. SWITCH INPUTS: MAY BE CONNECTED TO ANY NON ENERGY STORING OR GENERATING MECHANICAL SWITCH TYPE
DEVICE CONTAINING NO CAPACIT ANCE OR INDUCTANCE SUCH AS PNEUMERCATOR MODEL LS-600 SERIES.

WHT

BLU

WHT

12 AWG. TO
EARTH GND
(SEE NOTE 4)

BLK

BLU

BLK

NO CHANGES WITHOUT

PRIOR UL APPROVAL

ORN

1 2

EARTH

GROUND

4

1
R

1

W+
W-

W

2
3

B

1 2

TANK

TRANSMITT ER

WIRING TYP. 1 OF 4

PART NUMBER:

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES

FRACTIONS

± 1/64

MATERIAL:

FINISH:

DECIMALS
.XX ±.01
.XXX ±.005

N/A

N/A

1

+

1
2

-
1 2

SWITCH

N/A

ANGLES

± 0°30'

DRAWN BY

CHECKED BY

A. JOHNSON

1

RW1
2
3

B

21

LEAK

LEAK SENSOR
WIRING TYP. 1 OF 8

SWITCH WIRING
TYP. 1 OF 8

DATEAPPROVALS

DESCRIPTION

12/93

SIZE

CAGE CODE

C

NONE

SCALE

1

1

NC

2

C

NO

3

1

2

OUTPUT

DRY CONTACT
SWITCH (SEE
NOTE 3) TYPICAL
8-PLACES

PNEUMERCATOR

Liquid Level Control Systems

INTRINSICALLY SAFE LOOP

MODEL LDE-74 0

47876

DO NOT SCALE DRAWI NG

HOT

NEUTRAL
GROUND

120 VAC

( ±10%, 60 Hz)

DRAWING NO.

5017 2 C

1 32

N

VAC

LIVE

3AG 250V

1/4 AMP SLOW BLOW

Figure 16 – System Wiring Diagram

GND

REV.

SHEET

1 OF 1

Operation and Installation Manual

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Figure 17 - Program Chip Replacement

CHIP TO REPLACE
* NOTE ORIENTATION

OF NOTCH

NOTES:

U13

1. POWER MUST BE OFF FOR THIS PROCEDURE.

2. NOTCH ON CHIP MUST BE ORIENTED PROPERLY.

3. CHIP PULLER SHOULD BE USED.

4. ANY DAMAGE TO THE UNIT FROM THIS PROCEDURE IS
NOT THE RESPONSIBILITY OF PNEUMERCATOR CO.

PNEUMERCATOR CO. INC.

©

ASSY 900400-
REV A SERNO

1993

Page 89 of 104

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Figure 18 - Printer Paper and Ribbon Replacement

a) Set the inked ribbon spools as Figure

18-1 shows. Place the spools onto
the ribbon feed mechanism and then
push downward until it stops with a
click.

Do not force the spools onto the shafts.

Turn a spool and wind the ribbon to
eliminate loosing. Also, make a few
turns to check if there is irregular
tension.

b) For removal, pull up both spools and

take off the inked ribbon from the
ribbon path.

PAPER LOADING / UNLOADING

a) Before inserting, fold the paper
end aslant as Figure 18-3 shows
and advance the paper

It is suggested to print on the outer
side of tape. See Figure 18-4.

Ribbon Spool

Tension Roller

Ribbon Guide

Fig. 18-1 - Ribbon Path

Ribbon

Set Pin

Fig. 18-2

Printer

Be careful not to operate without
paper.

Front of case

Paper roll

b) For removal, pull it out from
either the inlet or the outlet.

Paper holder

Fig. 18-3Fig. 18-3

Fig. 18-4

PRINTER PAPER (PCO P/N 183600-1) – ADDING MACHINE PAPER ROLL 2.25" WIDE

PRINTER RIBBON (PCO P/N 183500-1) - 13MM X 6MM 35MM DIA. SPOOL

Page 90 of 104

Back of case

PNEUMERCATOR CO., INC. LDE-740 System

APPLICATION

MOUNTING

BUSHING

(BY CUST.)

(SUPPLIED)

SUMP

LEAK

SWITCH

JUNCTION BOX-NEMA 4 OR
BETTER (BY CUSTOMER)

LIQUID TIGHT
CORD CONNECTOR

TANK

MODEL LS-600 LD

SUMP INSTALLATION

MANHOLE
(BY CUST.)

CONDUIT

(BY CUST.)

LIQUID TIGHT

CORD CONNECTOR

25 FT. CABLE

(SUPPLIED)

LEAK

SWITCH

JUNCTION BOX-NEMA 4 OR

BETTER (BY CUSTOMER)

LIQUID TIGHT

CONCRETE

CONTAINMENT

CONDUIT

(BY CUST.)

MOUNTING

BUSHING

25 FT. CABLE

(SUPPLIED)

MONITORING

LEAK

SWITCH

PIPE

TANK

MODEL LS-600 LD

ABOVE GROUND

INSTALLATION

Page 91 of 104

(BY CUST.)

25 FT. CABLE

(SUPPLIED)

MONITORING

LEAK

SWITCH

PIPE

CORD CONNECTOR

ANNULAR

SPACE

MODEL LS-600 LD

MONITORING PIPE

INSTALLATION

INNER

TANK

MANHOLE
(BY CUST.)

CONDUIT

(BY CUST.)

25 FT. CABLE

CONTAINMENT

INSTALLATION INSTRUCTIONS

NOTES:

1.

MANHOLE:

SUPPLIED BY CUSTOMER.

1.1)

JUNCTION BOX:

2.
SUPPLIED BY CUSTOMER. TO BE NEMA 4 OR BETTER.

2.1)

2.2)

OPTIONAL SPLICE KIT IS AVAILAB LE (P/N 10585-2)

3.

SWITCH:

3.1)

SWITCH IS SUPPLIED AS AN ASSEMBLY WITH 25 FT. OF CABLE ATTACHED .

3.2)

MOUNTING REQUIRES A 1 3/4" MIN. (LS600 L DBN) OR 2" MIN. (LS600 LDSS)
OPENING.
CABLE IS 22AWG, 2-CONDUCTOR.

3.3)

3.4)

FLOAT IS SET NORMALLY OPEN TO CLOSE ON THE R ISE OF LIQUID LEVEL .
FOR A NORMALLY CLOSED SETTING:

1.

REMOVE THE FLOAT CLIP.

2.

REMOVE THE FLOAT, THEN PUT IT
BACK ON IN REVERSE.
RE-ATTACH FLOAT CLIP.

3.

CABLE

MEASUREMENT

.50

MTG.

HT.

"A"

FIGURE 1

MARK ON CABLE

CORD CONNECTOR

MOUNTING
BUSHING
(BY CUST.)

OPENING
(1 3/4" MIN. FOR
MODEL LS600 LDBN
2" MIN. FOR MODEL
LS600 LDSS)

22AWG,
2-CONDUCTOR
CABLE

LEAK
SWITCH

BOTTOM

1.

MEASURE YOUR MOUNTING HEIGHT. (THE DISTANCE FROM THE TOP OF THE
OPENING TO THE BOTTOM OF THE MONITORING PIPE OR CONTAINMENT SUM P.

2.

YOUR MOUNTING HEIGHT + "A" - .50 IS YOUR CABLE MEASUREMENT.

3.

UNROLL THE SENSOR / CABLE ASSEMBLY. MEASURE FROM THE SENSOR'S
BOTTOM UP THE CABLE UNTIL YOU REACH YOUR CABLE MEASUREMENT (FRO M
INSTRUCTION 2) AND MARK THE CABLE AT THAT POINT.

FEED THE CABLE THROUGH THE BOTTOM OF THE MOUNTING BUSHING AND

4.
CORD CONNECTOR UNTIL YOU SEE THE MARK ON THE C ABLE. INSERT THE
SENSOR AND CABLE THROUGH THE TANK OPENING.

SCREW IN THE MOUNTING BUSHING AND CONNECTOR.

5.

6.

TIGHTEN THE CONNECTOR WITH THE CABLE MARK IN THE CORRECT POSITI ON.

7.

USING THE PROPER CONSOLE WIRING DRAWING, WIRE TO THE JUNCTION B OX
OR SPLICE KIT AND THEN TO THE CONSOLE. FOLLOW LOCAL WIRING CODE S
AND EXPLOSION-HAZARD ELECTRICAL PRACTICES IF REQUIRED.

PART NUMBER:

UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES

FRACTIONS

DECIMALS
.XX ±.01

± 1/64

.XXX ±.005

MATERIAL:

N/A

FINISH:

N/A

REV APP.BYDATEDESCRIPTION

USED ONN EXT ASSY

SEE REVISION SHEET FOR THIS AND OTHER REVISION

F

HISTORY

MODEL LS-600 LD

PIPING SUMP OR

MANHOLE INSTALLATION

(REFER TO FIGURE 1)

N/A

DATEAPPROVALS

DRAWN BY

ANGLES

03/23/92

R. KHARE

± 0°30'

CHECKED BY

REVISIONS

JUNCTION BOX-NEMA 4
OR BETTER (BY CUST.)

PNEUMERCATOR

Liquid Level Control Systems

DESCRIPTION

INSTALLATION DRAW ING

MODEL LS 600-LD SWITCH

SIZE

CAGE CODE

D

47876

NONE

SCALE

DO NOT SCALE DRAWING

CUSTOMERS

EQUIPMENT

PIPING SUMP
(BY CUST.)

MANWAY
(BY CUST.)

DRAWING NO.

05/09/14 CHR

DOUBLE
WALL
TANK

10452 F

SHEET

1 OF 1

REV.

Figure 19 - LS600 LD Installation

Operation and Installation Manual

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Figure 20 - RSU-800 Installation

RED

DESCRIPTION:

The Reservoir Sensing Unit
MODEL RSU 800 is designed for
Hydrostatic Monitoring of Double Wall
Fiberglass Tanks. It is installed in the
reservoir chamber at the top of the tank and
monitors the fluid level therein. The
chamber between walls of the tank is filled
with a brine solution until the reservoir is half
full.

16 FT. 4-CONDUCTOR CABLE

2-7/8" DIAMETER

GREEN

WHITE
BLACK

HIGH

ALARM

ON

LOW

ALARM

ON

11"

2-1/8"

15"

2"

The MODEL RSU 800 has dual floats that
sense a High or Low Liquid Level within the
chamber. If a leak occurs through either wall
of the tank, the liquid level in the reservoir
changes. When it reaches the upper or
lower limits of the unit, an alarm sounds at
the monitor.

INSTALLATION:

The sensing unit is mounted in the reservoir.
A four (4) inch riser or standpipe (not
supplied) is prepared to accept a 3/8 N.P.T.
fitting (part no. 278113-1) and a cable strain
relief (part no. 278112-1) (supplied). Install
fittings and apply sealing compound where
required. The standpipe is then threaded
into the top of the reservoir using the four (4)
inch N.P.T. threads. The 16-foot cable from
the sensing unit is then routed out of the
standpipe through the fitting and strain relief
bushing to an acceptable electrical junction
box (not supplied). Adjust the sensor depth,
and tighten the strain relief bushing collar to
clamp the cable.

WIRING:

JUNCTION BO X
(By Others)

CONDUIT
(By Others)

CONTROL PANEL

FIGURE 20-1

CABLE CLAMP
BUSHING

CABLE

RESERVOIR
PROBE

FIGURE 20-2

+

-

JUNCTION BO X

STANDPIPE & CAP
(By Others)

4" NPT FITTING

* WHITE

RED

BLACK

RESERVOIR

LIQUID LE VEL

The reservoir sensing unit is wired
differently for various control panels.
Figures 3 through 6 show wiring
connections.

Page 92 of 104

* GREEN

PNEUMERCATO R CO. MODELS:

LC1000
E-700-1
LDE-700

LDE-740
LDE-1000
LCE-14/29

FIGURE 20-3

* NOT USED

PROBE

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Figure 20 - RSU-800 Installation (continued)

All conduit and electrical junction boxes
must be water-tight. Ensure that wiring
meets all local, state and national codes.

TESTING:

Test the sensing unit prior to installation.

Periodically test to ensure proper operation
by performing the following steps.

1. Remove the sensing unit from the
reservoir. This should activate alarm (due to
the float dropping), indicating a Low Liquid
Level.

2. Place the sensing unit in a vessel having
approximately five (5) inches of water; reset
any alarms on the control panel. The system
should now be in a normal condition.

3. Add water until the sensing unit activates
the alarm (due to the float rising), indicating
a High Liquid Level.

4. Remove the sensing unit from the test
vessel and return it to the reservoir on the
tank. Follow the installation procedures.

CONTROL PANEL

12

VEEDER-ROOT
MODELS TLS-250 OR TLS-350

FIGURE 20-4

CONTROL PANEL

56

PETROVEND PETROSONIC

FIGURE 20-5

JUNCTION BO X

WHITE

RED

BLACK

* GREEN

* NOT USED

PROBE

JUNCTION BO X

* WHITE

RED

BLACK

* GREEN

* NOT USED

PROBE

NOTE:

In normal operation, the reservoir level
fluctuates only due to temperature and
barometric pressure changes. The alarm
should not trip due to these normal
fluctuations.

Only a breach in either tank wall would
cause a fluctuation in liquid level great
enough to trigger the alarm.

Page 93 of 104

CONTROL PANEL

CW

JUNCTION BO X

* WHITE

RED

BLACK

* GREEN

* NOT USED

RED JACKET M ODEL PPM SERI ES
& IN-SITU RSS, RSE, & RSP

FIGURE 20-6

PROBE

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Appendix A

Keypad Error Codes:

0 – Print Buffer Overflow
1 – Unimplemented Command
2 – Clock has Lost Time (battery failure)
3 – Range Error
4 – RAM (memory) Error
5 – Keypad Buffer Overflow
6 – Syntax Error
7 – Probe (Volume) Measurement Over range
8 – Cold Reset
9 – Probe (Volume) Measurement Under range
10 – Clock Timeout (box in lower part of display)

*** To cancel the display of an error code, press any key on the keypad.

Page 94 of 104

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Appendix B

*** The relay listed for the alarm condition is the factory default. Relay programming
may be changed by keypad or RS-232 command. A check mark () under the Horn
heading indicates that the factory default is that the alarm condition actuates the horn.
Horn programming may be changed by keypad or RS-232 command.

Code Condition Relay Horn

01 Low Alarm Tank 1 5 
02 Low Alarm Tank 2 5 
03 Low Alarm Tank 3 5 
04 Low Alarm Tank 4 5 

05 High Alarm Tank 1 1 
06 High Alarm Tank 2 2 
07 High Alarm Tank 3 3 
08 High Alarm Tank 4 4 

09 Critical Alarm Tank 1 8 
10 Critical Alarm Tank 2 8 
11 Critical Alarm Tank 3 8 
12 Critical Alarm Tank 4 8 

13 High Water Tank 1 8 
14 High Water Tank 2 8 
15 High Water Tank 3 8 
16 High Water Tank 4 8 

17 Aux / Switch 1 Actuation 6 
18 Aux / Switch 2 Actuation 6 
19 Aux / Switch 3 Actuation 6 
20 Aux / Switch 4 Actuation 6 
21 Aux / Switch 5 Actuation 6 
22 Aux / Switch 6 Actuation 6 
23 Aux / Switch 7 Actuation 6 
24 Aux / Switch 8 Actuation 6 

25 Oil Leak Channel 1 7 
26 Oil Leak Channel 2 7 
27 Oil Leak Channel 3 7 
28 Oil Leak Channel 4 7 
29 Oil Leak Channel 5 7 
30 Oil Leak Channel 6 7 
31 Oil Leak Channel 7 7 
32 Oil Leak Channel 8 7 

Page 95 of 104

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Code Condition Relay Horn

33 Water Leak Channel 1 8
34 Water Leak Channel 2 8
35 Water Leak Channel 3 8
36 Water Leak Channel 4 8
37 Water Leak Channel 5 8
38 Water Leak Channel 6 8
39 Water Leak Channel 7 8
40 Water Leak Channel 8 8

41 Theft Tank 1 8
42 Theft Tank 2 8
43 Theft Tank 3 8
44 Theft Tank 4 8

45 Diagnostic Failure 8

Page 96 of 104

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Appendix C

Product Code Product Name

00 Product
01 #2 Oil
02 #3 Oil
03 #4 Oil
04 #5 Oil
05 #6 Oil
06 Fuel Oil
07 Heating Oil
08 Diesel
09 Kerosene
10 Motor Oil
11 Waste Oil
12 Hydraulic Oil
13 Cutting Oil
14 Quench Oil
15 Mineral Spirits
16 Steering Fluid
17 Transmission Oil
18 ATF
19 Gasoline
20 Unleaded
21 Unleaded Gasoline
22 Unleaded Regular
23 Regular Unleaded
24 Unleaded Premium
25 Premium Unleaded
26 Unleaded Super
27 Super Unleaded
28 Leaded Gasoline
29 Leaded Regular
30 Leaded Premium
31 Leaded Super
32 Regular
33 Premium
34 Super
35 Gasohol
36 Methanol
37 Methanol Blend
38 Ethanol
39 Alcohol
40 Antifreeze
41 Glycol
42 Acetone
43 Toluene
44 MEK
45 Solvent

Page 97 of 104

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Product Code Product Name

46 Waste Product
47 Used Oil
48 Waste Water
49 Water
50 AV Gas
51 Jet Fuel
52 Jet A
53 JP-4
54 JP-5
55 JP-6
56 JP-8
57 JP-10
58 Rocket Fuel
59 Special

* Codes 60, 61, 62, 63 are for custom names

Page 98 of 104

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Appendix D

RS-232 Connector Pinouts:

DB-25 Connector pin Signal Direction

1 Protective Ground -----------------­ 2 TxD to modem
3 RxD to gauge
4 RTS to modem
5 CTS to gauge
6 DSR to gauge
7 Signal Ground -----------------­ 8 DCD to gauge
20 DTR to modem
22 RING to gauge

NOTE: DTR is actively pulled to a true state. If DTR is not used, it may be left
unconnected. DSR, DCD and RING are ignored by the LDE-740.

RTS / CTS are used as hardware handshaking signals.

TxD Transmitted data
RxD Received data
RTS Request to Send
CTS Clear to Send
DTR Data Terminal Ready
DSR Data Set Ready
DCD Data Carrier Detected
RING Ring Indicator

Null modem cables at a minimum will cross wires for TxD / RxD and RTS / CTS.
Some communications software will require also crossing the DTR wire to the DSR
and / or the DCD wire(s). RING may also have to be terminated. See your
communications software for exact requirements. Communications using a null
modem cable should be set as Direct Connect in the communications software

Page 99 of 104

PNEUMERCATOR CO., INC. LDE-740 System

Operation and Installation Manual

Appendix E

RS-232 Setup:

**** Baud rate changes must be entered from LDE-740 keypad

Baud Rates
300
1200
2400 (default)
4800
9600

Word Length
7 bits

Parity
Even Parity

Stop Bits
1 Stop Bit

Start Bits
1 Start Bit

Settings for baud rate, word length, parity, and start and stop bits must be the
same for the LDE-740 and the computer, terminal or remote modem. XON / XOFF
software handshaking is not supported.

In modem port mode, the LDE-740 can match its baud rate to the negotiated
modem connection baud rate. This is known as adaptive baud rate equalization.
When the modem is disconnected, the baud rate will return to its previously
programmed speed. RS-232 Port setups that are printed or displayed will show the
programmed baud rate, not the negotiated baud rate.

When automatic dialouts are enabled in modem port mode, the LDE-740 will
attempt to call the stored phone number every 10 minutes for 1 hour until a connection
is made. If a connection to the stored phone number cannot be completed in 1 hour,
the dialout attempt will be aborted.

When a connection to the stored phone number is established, the LDE-740
will stay on-line so that further interrogation of the gauge may be performed. If no
communication with the remote system is received for 2 minutes, the modem is
disconnected, and the phone is hung up. The LDE-740 will then return to its previously
programmed baud rate.

If a remote system calls the LDE-740, the gauge will stay on-line until no
communication with the remote system is received for 5 minutes. The modem is then
disconnected, and the phone is hung up. The LDE-740 will then return to its previously
programmed baud rate.

Page 100 of 104