Aalborg PWE Digital User Manual

OPERATING MANUAL

PWE

Digital Paddle Wheel

Flow Meter

Technical Data Sheet No.: TD-10-09-118M
Date of Issue: October 2009

Aalborg7is a registered trademark of Aalborg Instruments & Controls.

NOTE: Aalborg reserves the right to change designs and dimensions at its sole

discretion at any time without notice. For certified dimensions please contact Aalborg7.

TABLE OF CONTENTS

1. UNPACKING THE PWE FLOW METER..........................................

1.1 Inspect Package for External Damage........................................................

1.2 Unpack the PWE meter..............................................................................

1.3 Returning Merchandise for Repair..............................................................

2. PWE FLOW METERS TECHNICAL DATA..........................................

2.1 Principles of Operation...............................................................................

2.2 Electrical Connections................................................................................

2.2.1 Power Supply Connections........................................................................

2.2.2 Analog Output Signals Connections.............................................................

2.2.3 Flow Sensor Pulse Output Signals Connections........................................

2.2.4 Programmable optically isolated Output Signals Connections....................

2.2.5 Communication Parameters and Connections.............................................

2.3 PWE Flow Meter Specification....................................................................

2.4 PWE Maintenance.........................................................................................

2.4.1 Sensors.......................................................................................................

2.4.2 PWE Paddle Wheel Disassembly................................................................

3. LCD KEYPAD OPERATION: DATA ENTRY AND CONFIGURATION...........

3.1 Display Indications (applicable for LCD options only)................................

3.1.1 PWE with RTD option Process Information Screens..................................

3.1.2 PWE without RTD option Process Information Screens.............................

3.2 Menu Sequence............................................................................................

3.3 Parameter Summary and Data Entry.............................................................

4. PARAMETER ENTRY...............................................................

4.1 Submenu Program protection...................................................................

4.2 Submenu Flow Meter Info...........................................................................

4.2.1 Full Scale Flow..............................................................................................

4.2.2 Communication Interface............................................................................

4.2.3 RTD hardware option..................................................................................

4.2.4 Analog Flow Output settings.......................................................................

4.2.5 Analog Temperature Output settings...........................................................

4.2.6 Flow Meter EEPROM data base version.....................................................

4.2.7 Flow Meter Firmware version.......................................................................

4.2.8 Flow Meter Serial number.............................................................................

4.2.9 Flow Meter Model number..........................................................................

4.2.10 Fluid Name.................................................................................................

4.2.11 Flow Meter Calibration Date........................................................................

4.2.12 Flow Meter Calibration Date Due..................................................................

4.2.13 Flow Meter User Tag Name.........................................................................

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4.3 Submenu Measuring Units........................................................................

4.3.1 User Defined Measuring Unit......................................................................

4.3.1.a User Defined Unit Factor Numeric entry......................................................

4.3.1.b User Defined Unit Time Base Tabular entry................................................

4.3.1.c User Defined Unit Density support Tabular entry.....................................

4.4 Submenu Flow Alarm.................................................................................

4.4.1 Flow Alarm Mode Tabular entry................................................................

4.4.2 Low Flow Alarm Numerical entry..............................................................

4.4.3 High Flow Alarm Numerical entry..............................................................

4.4.4 Flow Alarm Action Delay Numerical entry...................................................

4.4.5 Flow Alarm Action Latch Tabular entry.....................................................

4.5 Submenu Temperature Alarm (*optional)...................................................

4.5.1 Temperature Alarm Mode Tabular entry...................................................

4.5.2 Low Temperature Alarm Numerical entry...................................................

4.5.3 High Temperature Alarm Numerical entry...................................................

4.5.4 Temperature Alarm Action Delay Numerical entry.....................................

4.5.5 Temperature Alarm Action Latch Tabular entry.........................................

4.6 Submenu Main Totalizer..............................................................................

4.6.1 Main Totalizer Mode Tabular entry............................................................

4.6.2 Main Totalizer Flow Start Numerical entry................................................

4.6.3 Main Totalizer Event Volume Numerical entry..........................................

4.6.4 Main Totalizer Reset Tabular entry............................................................

4.7 Submenu Pilot Totalizer............................................................................

4.7.1 Pilot Totalizer Mode Tabular entry..............................................................

4.7.2 Pilot Totalizer Flow Start Numerical entry..................................................

4.7.3 Pilot Totalizer Event Volume Numerical entry.............................................

4.7.4 Pilot Totalizer Reset Tabular entry.............................................................

4.8 Submenu Optical Outputs Numerical entry..................................................

4.9 Submenu Flow Meter Configuration.........................................................

4.9.1 Submenu Flow Meter Low Flow Cut–off Numerical entry........................

4.9.2 Submenu Pulse Number Measure Interval Numerical entry........................

4.9.3 Submenu Flow Meter Calibration Factor Numerical entry........................

4.9.4 Submenu Flow Meter Measure Mode Tabular entry.................................

4.9.5 Submenu Noise Reduction Filter Damping Time Numerical entry............

4.9.6 Submenu Noise Reduction Filter Sample Number Numerical entry............

4.9.7 Submenu Flow Linearizer Tabular entry....................................................

4.9.8 Submenu Fluid Density Numerical entry...................................................

4.9.9 Submenu Pilot Calibration timer Tabular entry...........................................

4.10 Submenu LCD Back Light Numerical Entry...............................................

4.11 Submenu Alarm Events Log....................................................................

4.11.1 Submenu Alarm Events Log Status...........................................................

4.11.2 Submenu Alarm Events List......................................................................

4.11.3 Submenu Alarm Events Log Mask...........................................................

4.12 Submenu Diagnostic...................................................................................

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4.12.1 Submenu Raw Pulses Count.....................................................................

4.12.2 Submenu Pulse Frequency.........................................................................

4.12.3 Submenu Raw RTD reading (RTD option only)........................................

4.12.4 Submenu DAC_A Flow Output..................................................................

4.12.5 Submenu DAC_B Temperature Output....................................................

4.12.6 Submenu CPU Temperature........................................................................

4.12.7 Submenu Raw VCC Reading....................................................................

5. ANALOG OUTPUT SIGNALS.....................................................

5.1 Analog Output Signals configuration........................................................

5.2 Analog Output Signals calibration............................................................

5.2.1 Initial Setup...............................................................................................

5.2.2 Flow 0-5 Vdc analog output calibration....................................................

5.2.3 Flow 4-20 mA analog output calibration....................................................

5.2.4 Temperature 0-5 Vdc analog output calibration*......................................

5.2.5 Temperature 4-20 mA analog output calibration*....................................

6. PWE FLOW CALIBRATION PROCEDURES.....................................

6.1 Connections and Initial Warm Up.............................................................

6.2 Flow Meter Span Calibration....................................................................

6.3 Flow Meter Linearization Table Calibration..................................................

7. RS-485/RS-232 SOFTWARE INTERFACE COMMANDS.....................

7.1 General.......................................................................................................

7.2 Commands Structure................................................................................

7.3 ASCII Commands Set..............................................................................

8. TROUBLESHOOTING...............................................................

8.1 Common Conditions.................................................................................

APPENDIX I

PWE EEPROM Variables.................................................

APPENDIX II Component Diagram Top Side......................................

Component Diagram Bottom Side..................................

APPENDIX III Dimensional Drawing................................................

APPENDIX IV Warranty................................................................

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1. UNPACKING THE PWE

1.1 Inspect Package for External Damage

Your PWE Paddle Wheel Meter was carefully packed in a sturdy cardboard carton,
with antistatic cushioning materials to withstand shipping shock. Upon receipt,
inspect the package for possible external damage. In case of external damage to
the package contact the shipping company immediately.

1.2 Unpack the PWE meter

Open the carton carefully from the top and inspect for any sign of concealed ship­ping damage. In addition to contacting the shipping carrier please forward a copy
of any damage report to your distributor or Aalborg

®

directly. When unpacking the
instrument please make sure that you have all the items indicated on the Packing
List. Please report any shortages promptly.

1.3 Returning Merchandise for Repair

Please contact the customer service representative of your distributor or Aalborg

®

if you purchased your PWE Meter directly, and request a Return Authorization
Number (RAN). Equipment returned without an RAN will not be accepted.
Aalborg

®

reserves the right to charge a fee to the customer for equipment returned
under warranty claims if the instruments are tested to be free from warranted
defects. Shipping charges are borne by the customer. Items returned "collect" will
not be accepted! It is mandatory that any equipment returned for servicing be
purged and neutralized of any dangerous contents including but not limited to
toxic, bacterially infectious, corrosive or radioactive substances. No work shall be
performed on a returned product unless the customer submits a fully executed,
signed SAFETY CERTIFICATE. Please request form from the Service Manager.

2. PWE FLOW METERS TECHNICAL DATA

2.1 Principles of Operation

PWE liquid flow meters consist of a meter body that is installed in-line in a con­duit system. Inside, between the inlet and the outlet connections is a rotary wheel
with permanent magnets embedded at 180 degrees in paddles.

Fluid flowing through the meter causes the paddle to spin. A magnetic sensor
picks up the frequency of pulses, and the readings are proportional to the liquid
flow taking place. The number of pulses per unit time interval and a K-factor (puls­es/unit of flow) facilitate determining the volumetric rate of flow through the
meter.

1

Additionally, the PWE Flow Meter incorporates a Microcontroller driven circuitry
and non-volatile memory that stores all hardware specific variables. The flow rate
can be displayed in 29 different volumetric or mass flow engineering units. Flow
meter parameters and functions can be programmed remotely via the RS-232/RS­485 interface or locally via optional LCD/KeyPad. PWE flow meters support vari­ous functions including: two programmable flow totalizers, low, high or range flow
and temperature* alarms, 2 programmable optically isolated outputs, 0-5 Vdc / 4­20 mA analog outputs (jumper selectable) for each process (flow and tempera­ture*) variable, self diagnostic alarm. Optional local 2x16 LCD* readout with
adjustable back light provides flow rate, temperature*, total volume reading in cur­rently selected engineering units, diagnostic events indication and feature a pass­word protected access to the process parameters to ensure against tampering or
resetting.

2.2 Electrical Connections

PWE flow meter is supplied with “M16” cylindrical 12 pin connector. Pin diagram
is presented in figure b-1.

Figure b-1, PWE 12 Pin "M16" Connector Configuration

PIN PWE FUNCTION TYPE

A Plus Power Supply (+ DC power 11 to 26 Vdc) +Power

B

Common Power Supply, (DC power 11 to 26 Vdc),
Digital Common

-Power,
Common

C

Flow Sensor Pulse Output (active), 3.3Vdc 3K min.
load impedance

Output
Only

D

Digital Communication interface, RS485 (-)
(Optional RS232 TX)

Input
/Output

E

Digital Communication interface, RS485 (+)
(Optional RS232 RX)

Input
/Output

F Optical Output No.1 Plus (+) (passive) Input

G

Optical Output No.1 Minus (-) (passive)

Return
for Pin F

H Optical Output No.2 Plus (+) (passive) Input

J Optical Output No.2 Minus (-) (passive)

Return
for Pin H

K

Common, Analog Signal Ground For Pins L & M,
(4-20 mA return)

Signal
Common

L

Temp. Analog Output Plus (+) 0-5 Vdc or 4-20 mA,
jmp. selectable

Output
Only

M

Flow Analog Output Plus (+), 0-5 Vdc or 4-20 mA,
jmp. selectable

Output
Only

2

2.2.1 Power Supply Connections

The power supply requirements for PWE flow meter are: 11 to 26 Vdc 100 mV
maximum peak to peak output noise, (unipolar power supply).

Pin A ------------- DC Power (+)
Pin B ------------- DC Power (-)

The (+) and (-) power inputs are each protected by a 300mA M (medium time-lag)
resettable fuse. If a shorting condition or polarity reversal occurs, the fuse will cut
power to the flow transducer circuit. Disconnect the power to the unit, remove
the faulty condition, and reconnect the power. The fuse will reset once the faulty
condition has been removed.

Use of the PWE flow meter in a manner other than that specified in this manual or
in writing from Aalborg

®

, may impair the protection provided by the equipment.

2.2.2 Analog Output Signals Connections

PWE series Flow Meters are equipped with either calibrated 0-5 or calibrated 4-20
mA output signals (jumper selectable). This linear output signal represents
0-100% of the flow meter’s full scale range.

CAUTION: Do not apply power voltage above 26Vdc.

Doing so will cause PWE damage or faulty operation.

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Make sure power is OFF when connecting or disconnecting any cables

in the system.



CAUTION: When connecting the load to the output terminals, do not

exceed the rated values shown in the specifications. Failure to do so

might cause damage to this device. Be sure to check if the wiring and

the polarity of the power supply is correct before turning the power

ON. Wiring error may cause damage or faulty operation.



WARNING: The 4-20 mA current loop output is self-powered (sourcing
type, non-isolated). Do NOT connect an external voltage source to the
output signals.



Flow 0-5 VDC or 4-20 mA output signal connection:

Pin M ------------ (+) Plus Flow Analog Output
Pin K ------------ (-) Minus Flow Analog Output

Temperature 0-5 VDC or 4-20 mA output signal connection (optional):

Pin L ------------ (+) Plus Temperature Analog Output
Pin K ------------ (-) Minus Temperature Analog Output

To eliminate the possibility of noise interference, use a separate cable entry for
the DC power and analog signal lines (pins L, M, K on “M16” connector).

2.2.3 Flow Sensor Pulse Output Signals

Connections

Pin C ------------ (+) Flow Sensor Pulse Output (active), 3.3Vdc
Pin B ------------ DC Power (-), Digital Common

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WARNING: Observe jumper configuration before connecting 4-20 mA
current loop load. Failure to make proper jumper configuration (see
Figure 5-1) may cause damage for output circuitry.
Do NOT connect an external voltage source to the output signals.



WARNING: The flow sensor pulse output is self-powered (open drain,
pulled up with 10K resistor to internal 3.3Vdc rail).
Do NOT connect an external voltage source to the pulse output signals.
Use load with input impedance more than 30K is recommended.



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2.2.4 Programmable optically isolated Output

Signals Connections

Optocoupler #1 (pins F and G):

Pin F ------------ Plus (+) (passive)
Pin G ------------ Plus (-) (passive)

Optocoupler #2 (pins H and J):

Pin H ------------ Plus (+) (passive)
Pin J ------------ Plus (-) (passive)

2.2.5 Communication Parameters and Connections

The digital interface operates via RS485 (optional RS-232) and provides access to
applicable internal data including: flow, temperature, totalizers and alarm settings,
flow linearizer table, fluid density and engineering units selection.

WARNING: Optically isolated outputs require application of DC voltage
across terminals. Do not exceed maximum allowed limits for voltage
and current provided below:



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Communication Settings for RS-485/RS-232 communication interface:

Baud rate: ------------ 9600 baud
Stop bit: ------------ 1
Data bits: ------------ 8
Parity: ------------ None
Flow Control: ------------ None

RS-485 communication interface connection:

The RS485 converter/adapter must be configured for: multidrop, 2 wire, half duplex
mode. The transmitter circuit must be enabled by TD or RTS (depending on which
is available on the converter/adapter). Settings for the receiver circuit should follow
the selection made for the transmitter circuit in order to eliminate echo.

Pin D ------------ RS-485 T(-) or R(-)
Pin E ------------ RS-485 T(+) or R(+)
Pin B ------------ RS-485 GND (if available)

RS-232 communication interface connection:

Crossover connection has to be established:

Pin D ------------ RS-232 RX (pin 2 on the DB9 connector)
Pin E ------------ RS-232 TX (pin 3 on the DB9 connector)
Pin B ------------ RS-232 SIGNAL GND

(pin 5 on the DB9 connector)

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2.3 PWE Flow Meter Specification

FLOW MEDIUM: Please note that PWE Flow Meters are designed to work only
with liquids. Never try to measure flow rates of dry gas.

CALIBRATIONS: Performed at standard conditions [14.7 psia (101.4 kPa) and
70 °F (21.1 °C)] unless otherwise requested or stated.

VISCOSITY: Calibrated to 1 cPoise (water). Meters can be used for fluids up to
50 cPoise with field calibration (maximum flow range may be affected).

ENVIRONMENTAL (PER IEC 664): Installation Level II; Pollution Degree II.

FLOW ACCURACY (INCLUDING LINEARITY): ±1% of FS.

REPEATABILITY: ±0.25% of full scale.

TEMPERATURE ACCURACY (INCLUDING LINEARITY)*: ±0.5 °C.

FLOW RESPONSE TIME: Approximately 1 seconds (above 10% of full scale

flow), approximately 2 seconds (below 10% of full scale flow).

MAXIMUM PRESSURE: 10 bar (150 psi).

MAXIMUM PRESSURE DROP: See Table 2.3.1 for pressure drops associated

with various models and flow rates.

FLUID AND AMBIENT TEMPERATURE: 14 °F to 140 °F (-10 °C to 60 °C).

OUTPUT SIGNALS: Linear 0-5 Vdc (3000 ohms min load impedance);

Linear 4-20 mA (500 ohms maximum loop resistance).
Maximum noise 20mV peak to peak (for 0-5 Vdc output).
Flow Pulse Output: 3.3 Vdc amplitude (3000 ohms min load impedance).

OPTICALLY ISOLATED OUTPUTS: UCE 40Vdc, ICE 150 mA.

FLOW METER INPUT POWER: 11 to 26 Vdc, 100 mV maximum peak to peak

output noise. Power consumption: +12Vdc (150 mA maximum);
+24Vdc (100 mA maximum); Circuit board have built-in polarity reversal
protection, 300mA resettable fuse provide power input protection.

COMMUNICATIONS PARAMETERS (RS-232/RS-485):

Baud rate: ...................... 9600 baud

Stop bit: ...................... 1

Data bits: ...................... 8

Parity: ...................... None

Flow Control: ...................... None

DISPLAY*: Optional local 2x16 characters LCD with adjustable backlight (2 lines of text).

KEY PAD*: Optional 4 push button key pad.

CE COMPLIANCE: EMC Compliance with 89/336/EEC as amended.

Emission Standard: EN 55011:1991, Group 1, Class A
Immunity Standard: EN 55082-1:1992

(* - optional feature)

Table 2.3.1 PWE Flow Meter Flow Ranges and Pressure Drop

Table 2.3.2 PWE Flow Meter wetted materials

8

FLOW RATE FOR PWE

METER

SIZES

FLOW RATE H20

INLET/OUTLET

PORTS FEMALE

NPT

MAXIMUM PRESSURE DROP

[L/min] Gal/min Bar PSI

PWE4 0.15-18.9 0.04-5 3/8" 1 15

PWE6 0.3-37.6 0.08-10 1/2" 1.4 20

PWE8 0.6-64.4 0.15-17 3/4" 1.4 20

PWE10 1.3-132.5 0.35-35 1" 1.4 20

WETTED MATERIALS

POLYPROPYLENE MODELS PVDF MODELS

BODY Polypropylene PVDF

LID Acrylic PVDF

PADDLE WHEEL

PVDF
Nickel Tungsten Carbide

PVDF
Zirconia Ceramic

BEARINGS Sapphire Jewels Sapphire Jewels

O-RINGS EPDM PTFE

PLATINUM RTD 316 stainless steel casing 316 stainless steel casing

9

2.4 PWE MAINTENANCE

CAUTION: Some of the IC devices used in the flow meter signal
conditioning circuitry are static sensitive and may be damaged by
improper handling. When adjusting or servicing the signal converter,
use of a grounded wrist strap is recommended to prevent inadvertent
damage to the integral solid state circuitry. The flow meter signal
conditioning circuitry uses complex electronic circuit components.
Generally, due to the complexity of troubleshooting integrated circuit
devices, maintenance beyond the PCB assembly level is not
recommended. Also, caution must be used when connecting test
probes, as even a momentary accidental short circuit may damage or
destroy an integrated circuit device.



CAUTION: Never use compressed air or gases to test the meter,
as this would damage the Bearings.



2.4.1 Sensors

In rare instances, due to electrical damage, the pulse sensor or RTD need to be
replaced by disconnecting the signal cable connector from the PCB and unscrew­ing it and installing a replacement. This procedure can be done only by factory
authorized personel.

2.4.2 PWE Paddle Wheel and Bearings Replacement

To replace the paddle wheel, disconnect the meter from electrical and liquid lines.
Unscrew 4 screws that hold the lid in place. Remove the lid by lifting it up and
move the wheel out. The Wheel’s embedded shaft is supported at each end by sap­phire bearings to minimize friction and facilitate very low flow rate measurements
(see Figure 2-1). Reassembly is made ensuring that the shaft end is inserted gen­tly into the bottom bearing. Check to see if the wheel is free to spin before the lid
is installed. Gently put the lid over the opening and gently spin it by hand until the
upper bearing, installed in the lid, drops into the place. Hold the lid down and
check for free spinning by lightly blowing into the port; or lightly shake and listen
if both shaft ends got into the bearings. Make sure the O-ring is in its seat, insert
four cap screws and gradually tighten them. Bearings are made of sapphire, which
rarely needs replacement, unless they were physically shattered. Bearings highly
susceptible to careless disassembly and reassembly practices. While the unit is
disassembled for paddle wheel replacement, bearing could be replaced with bear­ing removal tool.

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1

4

2

3

2

7

6

5

8

NOTE: Platinum RTD is not shown.

PARTS LIST

PARTS PWEP MATERIALS PWET MATERIALS

1 LOWER BLOCK POLYPROPYLENE PVDF

2 JEWEL BEARING (2 required) PVDF SAPPHIRE

3 PADDLE WHEEL

PVDF & NICKEL

TUNGSTEN CARBIDE

PVDF &

ZIRCONIA CERAMIC

4 LID ACRYLIC PVDF

5 JUMPER COMPARTMENT PLUG POLYPROPYLENE

6 SCREW 8-32 (4 required) STAINLESS STEEL

7 O-RING EPDM PTFE

8 SCREW 6-32 STAINLESS STEEL

Figure 2-1 PWE assembly presentation drawing

11

3. LCD KEYPAD OPERATION: DATA ENTRY AND

CONFIGURATION
(applicable for LCD options only)

3.1 Display Indications

Initially, after the power is first turned on, the flow meter model number is shown
in the first line of the display and the revisions for EPROM table and firmware in
the second line. Subsequently the actual process information is displayed. The
instantaneous flow rate is displayed on the first line in percent or in direct
reading units with flow alarm status indication. For flow meters without RTD
option, the main totalizer value, up to 9 digits (including decimal), is displayed in
the second line with its corresponding units.

For flow meters with RTD option, the temperature reading value in deg C, is dis­played in the second line with temperature alarm status indication. This display is
designated as process information (PI) screen throughout the remainder of this
manual.

The temperature value (applicable for RTD option only) in deg F can be displayed
in the PI screen by pressing the ENT pushbutton. The temperature indication can
be switched from deg C to deg F and back by pressing ENT pushbutton.

Figure 3.1: PWE first Banner Screen

Figure 3.2: PWE with RTD option initial Process Information Screen

AALBORG PW METER

Fw: A001 Tbl: A001

5.001 Gl/min AD

20.1 C TA: D

Note: Actual content of the LCD screen may vary depending on the
model and device configuration.

,

12

Figure 3.3: PWE without RTD option initial Process Information Screen

Based on flow meter configuration (with or without RTD option), different param­eters may be displayed in the PI screen by pressing the UP or DN pushbuttons.

3.1.1 PWE with RTD option Process Information

Screens

Pressing UP and DN buttons from initial PI screen will switch display as following:

[Initial PI screen]

Action: Keypad UP

i

Figure 3.4: PWE with RTD option Process Information Screen with Main Totalizer

Action: Keypad UP

i

Figure 3.5: PWE with RTD option Process Information Screen with Pilot Totalizer

5.001 Gl/min AD

MT: 60639.38 Gal

5.001 Gl/min AD

MT: 60639.38 Gal

5.001 Gl/min AD
PT: 65.81 Gal

13

Action: Keypad UP

i

Figure 3.6: PWE with RTD option PI Screen with flow range, temperature and

Main Totalizer

Action: Keypad UP

i

Action: Keypad UP

i

Figure 3.7: PWE with RTD option PI Screen with Main Totalizer, temperature and

Pilot Totalizer

Action: Keypad UP

i

Figure 3.8: PWE with RTD option PI Screen with Main and Pilot Totalizers

5.001 Gl/min AD

20.1 C *******Gal

MT: 60639.38 Gal

20.1 C 65.81 Gal

MT: 60639.38 Gal

PT: 65.81 Gal

14

Action: Keypad UP

i

Figure 3.9: PWE with RTD option initial Process Information Screen

Pressing UP button, pages through the PI screens in the forward direction.
Pressing DN button, pages through the PI screens in the reverse direction. When
the last PI screen is reached, the firmware "wraps around" and scrolls to the initial
PI screen once again.

3.1.2 PWE without RTD option Process
Information Screens

Pressing UP and DN buttons from initial PI screen will switch display as following:

[Initial PI screen]

Action: Keypad UP

i

Figure 3.10: PWE without RTD option PI Screen with Main and Pilot Totalizer

Action: Keypad UP

i

Figure 3.11: PWE without RTD option initial PI Screen with Main and Pilot

Totalizer

MT: 60639.38 Gal

PT: 65.81 Gal

5.001 Gl/min AD

20.1 C TA: D

5.001 Gl/min AD
PT: 65.81 Gal

15

Action: Keypad UP

i

Figure 3.12: PWE without RTD option initial PI Screen with Flow rate and Main

Totalizer

3.2 Menu Sequence

The listing below gives a general overview of the standard top-level display menu
sequence when running firmware version A002. The ESC pushbutton is used to
toggle between the process mode (PI screens) and the menu.

The listing in Section 3.2 shows the standard display menu sequence and sub­menus using the UP button to move through the menu items. The first message
displayed the first time the ESC button is pressed after the converter is powered
up is "Prog. Protection ON". Thereafter, pressing the ESC button while the
flow meter is in monitoring mode (PI screens) will display the parameter that was
last exited.

Program Protection may be turned "off" by pressing the ENT button when the Prog.
Protection menu is displayed. The firmware will prompt with "Change Prog Prot”.
Pressing UP or DN button will toggle current protection status. If password is set
to any value more than zero, the firmware will prompt with "Enter Prot Code". User
has to enter up to 3 digits program protection code, in order to be able to access
password protected menus. Once correct password is entered, program protec­tion id turned off until unit is powered up again.

When the last menu item is reached, the firmware "wraps around" and scrolls to
the first item on the menu once again (see Figure 3.12). The menu items in the first
column are upper-level configuration mode functions. Submenu selections
(shown indented in the second column) only appear if the associated upper level
is selected by pressing the ENT push button. The allowable selections of sub­menu items which are selected by tabular means are shown in detail in Section 3.3

5.001 Gl/min AD

MT: 60639.38 Gal

16

Figure 3.12 Upper level menu structure.

CONFIGURATION DATA

Prog. Protection
on/off

Prog. Prot. Code
old/new

Submenu
Flow Meter Info

Submenu
Measuring Units

Submenu
Flow Alarm

Submenu
Temp. Alarm

Submenu
Main Totalizer

Submenu
Pilot Totalizer

Submenu
Optical Outputs

Submenu
FlowMeter Config

LCD Back Light
50 %F.S.

Submenu
Alarm Events Log

Submenu
Diagnostic

17

3.3 Parameter Summary and Data Entry

18192021222324

4. PARAMETER ENTRY

There are two methods of data entry: • Direct numerical number entry

• Tabular Input from a table menu.

If menu with direct numerical entry is selected use Up button to increment digit
value from 0-9. Use Dn button to move cursor to another digit position. When
desired value is entered use ENT button to accept (save in the EEPROM) new
value.

If menu with tabular entry is selected, the available menu options can be set
with the Up and Dn buttons and are accepted by pressing ENT button.

Note: During data entry the input values are checked for acceptability.
If data is not acceptable, it is rejected and a message is generated
indicating that the new data has not been accepted.

4.1 Submenu Program protection

After power has been turned on, programming parameters may only be changed
by turning program protection "OFF". There are two ways to turn off the
program protection:

1. If program protection code (PP-code) is on "0" (factory default), the
program protection is turned off by pressing ENTER key.

2. If a PP-code (1 to 255) other than "0" has been entered, this code must be
entered in order to turn the program protection "OFF".

The PP-code can be changed after the program protection has been turned off.

In order to protect device configuration parameters when changing the PP-code
the old PP-code must be entered after ENTER has been pressed.

Press ENTER key after entry of old PP-code.

25

,

Prog. Protection code

-----------------------------

Old PP-code?

----------------------------­0

26

Now enter the new PP-code (0-255) and press ENTER key. The new PP-code is
now valid to turn off the program protection. If the PP-code is forgotten, it can
be restored only via digital communication interface.

4.2 Submenu Flow Meter Info

This submenu contains information about the meter main configuration parame­ters. These items are informational only and may not be changed (read only).

4.2.1 Full Scale Flow

This display indicates the full scale range of the meter in L/min. The full scale
range of the flow meter is related to the lower block inside diameter. It is set on
the factory during calibration procedure. The full scale range of the meter is not
user changeable. A typical display is shown below.

4.2.2 Communication Interface

This display indicates type of the digital communication interface (RS-232 or
RS-485) and device address (two hexadecimal characters of the address will be
displayed only for RS-485 interface option). All flow meters are shipped from the
factory with default address 11. A typical display for device with RS-485 option
is shown below.

New PP-code

----------------------------­0

Full Scale Flow:

18.92706 L/min

Comm. Interface:

RS-485 ADD: 11

27

4.2.3 RTD hardware option

This display indicates presence of the RTD hardware. If second line of the screen
indicates “Installed”, then flow meter is equipped with RTD with signal process­ing circuitry and ready for temperature measurement. A typical display for device
with RTD option is shown below.

4.2.4 Analog Flow Output settings

This display indicates which type of the jumper selectable Flow analog output is
currently active. The device can be set for 0-5 Vdc or 4-20 mA output. A typical
display for device with jumper configuration for 0-5 Vdc Flow output is shown
below.

4.2.5 Analog Temperature Output settings

This display indicates which type of the jumper selectable Temperature analog out­put is currently active. The device can be set for 0-5 Vdc or 4-20 mA output. A typ­ical display for device with jumper configuration for 0-5 Vdc Temperature output
is shown below.

Note: Analog Temperature Output settings screen will be available
on the devices which are not equipped with RTD option as well. In
this case user should not be under impression that unit supports
temperature measurement.

RTD Option:

Installed

Analog Flow Out:

0-5 Vdc

Analog Temp Out:

0-5 Vdc

,

28

4.2.6 Flow Meter EEPROM data base version

This display indicates current version of the EEPROM data base. The EEPROM
stores all flow meter configuration parameters. The Flow Meter EEPROM data base
version is not user changeable. A typical display with EEPROM version is shown
below.

4.2.7 Flow Meter Firmware version

This display indicates current version of the flow meter firmware. The Flow Meter
Firmware version is not user changeable. A typical display with firmware version
is shown below.

4.2.8 Flow Meter Serial number

This display indicates the serial number of the flow meter. This number is gener­ated by the factory and is unique to the instrument. The flow meter serial number
is not user-changeable. A typical display with flow meter serial number is shown
below.

4.2.9 Flow Meter Model number

This display indicates the model number of the flow meter. The flow meter model
number is not user-changeable. A typical display with flow meter model number
is shown below.

EEPROM Version:

A001

Firmware Version

A002

Serial Number:

245893-1

Model Number:

PWE04P-ELN-A2

29

4.2.10 Fluid Name

This display indicates the name of the fluid the flow meter was calibrated for. The
fluid name may be changed by user via digital communication interface. A typical
display with fluid name is shown below.

4.2.11 Flow Meter Calibration Date

This display indicates the date when most recent calibration of the flow meter was
performed. The calibration date may be changed by user via digital communica­tion interface. A typical display with flow meter calibration date is shown below.

4.2.12 Flow Meter Calibration Date Due

This display indicates the date when next calibration of the flow meter has to be
performed. The calibration date due may be changed by user via digital commu­nication interface. A typical display with flow meter calibration date due is shown
below.

4.2.13 Flow Meter User Tag Name

Flow meter Tag is the quickest and shortest way of identifying and distinguishing
between multiple flow meters. Flow meters can be tagged according to the
requirements of your application. The tag may be up to 16 characters long and is
user-defined. A typical display with flow meter Tag Name is shown below.

Fluid Name:

WATER

Calibration Date:

08/01/2009

Calib. Date Due:

08/01/2010

4.3 Submenu Measuring Units

This submenu allows selection of units for flow rate and Totalizer reading. Units
should be selected to meet your particular metering needs.

30

User Tag Name:

NOT ASSIGNED

Note: Once Flow Unit of Measure is changed the Totalizer’s Volume
based Unit of Measure will be changed automatically.

,

31

UNITS OF MEASURE

NUMBER INDEX

FLOW RATE

ENGINEERING

UNITS

TOTALIZER

ENGINEERING

UNITS

DESCRIPTION

1 0 % %s Percent of full scale

2 1 mL/sec mL Milliliter per second

3 2 mL/min mL Milliliter per minute

4 3 mL/hr mL Milliliter per hour

5 4 L/sec Ltr Liter per second

6 5 L/ min Ltr Liter per minute

7 6 L/hr Ltr Liter per hour

87

m

3

/sec m

3

Cubic meter per second

98

m

3

/ min m

3

Cubic meter per minute

10 9

m

3

/hr m

3

Cubic meter per hour

11 10

ft

3

/sec ft

3

Cubic feet per second

12 11

ft

3

/min ft

3

Cubic feet per minute

13 12

ft

3

/hr ft

3

Cubic feet per hour

14 13 Gl/sec Gal Gal per sec

15 14 Gl/min Gal Gal per minute

16 15 Gal/hr Gal Gal per hour

17 16 g/sec g Grams per second

18 17 g/min g Grams per minute

19 18 g/hr g Grams per hour

20 19 kg/sec kg Kilograms per second

21 20 kg/min kg Kilograms per minute

22 21 kg/hr kg Kilograms per hour

23 22 Lb/sec Lb Pounds per second

24 23 Lb/min Lb Pounds per minute

25 24 Lb/hr Lb Pounds per hour

26 25 t/sec Ton Ton (metric) per sec

27 26 t/min Ton Ton (metric) per minute

28 27 t/hr Ton Ton (metric) per hour

29 28 User UD User defined

32

The listed units in the table above can be set with the Up and Dn buttons and are
accepted by pressing ENT button.

4.3.1 User Defined Measuring Unit

This function enables user defined configuration of any engineering unit in the
converter. The following three parameters are available for this function:

a) Unit volume factor (defined in Liters)
b) Unit time base (defined in Seconds)
c) Unit with or without density support.

4.3.1.a User Defined Unit Factor Numeric entry

This parameter indicates the factor of the new unit with respect to one liter. The
default entry is 1.00 Liter.

4.3.1.b User Defined Unit Time Base Tabular entry

This parameter indicates the time base for User Defined Unit. The following selec­tions are available: 1 second, 60 seconds (1 minute), 3600 seconds (1 Hour). The
default entry is 60 seconds.

The listed time based selections above can be set with the Up and Dn buttons and
are accepted by pressing ENT button.

Note: The entry of the listed parameters a), b) and c) is only
necessary in case the required engineering unit is not available in the
table above, (see Section 4.3).

,

UD Unit Factor

1.00 Liter

UDU Time Base

60 Seconds

33

4.3.1.c User Defined Unit Density support
Tabular entry

This function determines whether the newly entered user defined engineering unit
is a mass unit (with density) or a volumetric unit (without density). The following
selections are available: Enabled or Disabled. The default entry is Disabled.

The listed above density support selections can be set with the Up and Dn buttons
and are accepted by pressing ENT button. If density was selected, also refer to
section 4.9.8.

4.4 Submenu Flow Alarm

PWE provides the user with a flexible alarm/warning system that monitors the
Fluid Flow for conditions that fall outside configurable limits as well as visual feed­back for the user via the LCD (only for devices with LCD option) or via an optical­ly isolated outputs.

The flow alarm has several attributes which may be configured by the user via
optional LCD/Keypad or digital communication interface. These attributes control
the conditions which cause the alarm to occur and to specify actions to be taken
when the flow rate is outside the specified conditions.

Flow Alarm conditions become true when the current flow reading is equal or
higher/lower than corresponding values of high and low flow alarm levels. Alarm
action can be assigned with preset delay interval (0-3600seconds) to activate the
optically isolated output (separate for High and Low alarm). Latch Mode control
feature allows each optical output to be latched on or follow the corresponding
alarm status.

4.4.1 Flow Alarm Mode Tabular entry

This function determines whether Flow Alarm is Enabled or Disabled. The follow­ing selections are available: Enabled or Disabled. The default entry is Disabled.

UDU Use Density

Disabled

Flow Alarm Mode

Disabled

34

The listed above Alarm Mode selections can be set with the Up and Dn buttons
and are accepted by pressing ENT button.

4.4.2 Low Flow Alarm Numerical entry

The limit of required Low Flow Alarm value can be entered in increments of

0.1% from 0 - 100%F.S.

A typical display with flow meter Low Flow Alarm is shown below.

If a Low Alarm occurs, and one of the two optical outputs is assigned to the Low
Alarm Event (see Section 4.8) the optically isolated output will be activated when
the flow is less than the Low Flow Alarm value. The Flow Alarm condition is also
indicated on the display Process Information Screen by displaying L character. A
typical display with flow meter Process Information Screen and activated Low
Flow Alarm is shown below.

4.4.3 High Flow Alarm Numerical entry

The limit of required High Flow Alarm value can be entered in increments of 0.1%
from 0 - 100%F.S.

A typical display with flow meter High Flow Alarm settings is shown below.

Note: The value of the Low Flow Alarm must be less than the
value of the High Flow Alarm.

,

Note: The value of the High Flow Alarm must be more than the
value of the Low Flow Alarm.

,

Low Flow Alarm

10.0 %F.S.

0.401 Gl/min AL

MT: 65.81 Gal

If a High Alarm occurs, and one of the two optical outputs is assigned to the High
Alarm Event (see Section 4.8) the optically isolated output will be activated when
the flow is more than the High Flow Alarm value. The Flow Alarm condition is also
indicated on the display Process Information Screen by displaying H character. A
typical display with flow meter Process Information Screen and activated High
Flow Alarm settings is shown below.

4.4.4 Flow Alarm Action Delay Numerical entry

The Flow Alarm Action Delay is a time in seconds that the Flow rate value must
remain above the high limit or below the low limit before an alarm condition is
indicated. Valid settings are in the range of 0 to 3600 seconds. A typical display
with flow meter Flow Alarm Delay settings is shown below.

4.4.5 Flow Alarm Action Latch Tabular entry

The Flow Alarm Action Latch settings controls Latch feature when optically isolat­ed outputs are assigned to Flow Alarm event. Following settings are available:
Disable or Enabled.

By default, flow alarm is non-latching. That means the alarm is indicated only
while the monitored flow value exceeds the specified set conditions. If optically
isolated output is assigned to the Flow Alarm event, in some cases, the Flow Alarm
Latch feature may be desirable.

35

High Flow Alarm

90.0 %F.S.

4.641 Gl/min AH

MT: 67.81 Gal

Flow Alarm Delay

1 Second

36

The listed above Flow Alarm Action Latch selections can be set with the Up and
Dn buttons and are accepted by pressing ENT button.

4.5 Submenu Temperature Alarm (*optional)

PWE with RTD option provides the user with a flexible alarm/warning system that
monitors the Fluid Temperature for conditions that fall outside configurable limits
as well as visual feedback for the user via the LCD (only for devices with LCD
option) or via an optically isolated outputs.

The temperature alarm has several attributes which may be configured by the user
via optional LCD/Keypad or digital communication interface. These attributes con­trol the conditions which cause the alarm to occur and to specify actions to be
taken when the temperature value is outside the specified conditions. Temperature
Alarm conditions become true when the current temperature reading is equal or
higher/lower than corresponding values of high and low temperature alarm levels.
Alarm action can be assigned with preset delay interval (0-3600seconds) to acti­vate the optically isolated output (separate for High and Low alarm). Latch Mode
control feature allows each optical output to be latched on or follow the corre­sponding alarm status.

4.5.1 Temperature Alarm Mode Tabular entry

This function determines whether Temperature Alarm is Enabled or Disabled. The
following selections are available: Enabled or Disabled. The default entry is
Disabled.

The listed above Temperature Alarm Mode selections can be set with the Up and
Dn buttons and are accepted by pressing ENT button.

4.5.2 Low Temperature Alarm Numerical entry

The limit of required Low Temperature Alarm value can be entered in increments
of 0.1 °C from -9.9 °C to 99.9 °C.

Flow Alarm Latch

Disabled

Temp Alarm Mode

Disabled

37

A typical display with flow meter Low Temperature Alarm is shown below.

A typical display with flow meter Low Temperature Alarm is shown below.

If a Low Temperature Alarm occurs, and one of the two optical outputs is assigned
to the Low Alarm Event (see Section 4.8) the optically isolated output will be acti­vated when the temperature is less than the Low Temperature Alarm value.

The Temperature Alarm condition is also indicated on the display Process
Information Screen by displaying L character. A typical display with flow meter
Process Information Screen and activated Low Temperature Alarm is shown
below.

4.5.3 High Temperature Alarm Numerical entry

The limit of required High Temperature Alarm value can be entered in increments
of 0.1°C from -9.9 °C to 99.9 °C.

A typical display with flow meter High Temperature Alarm settings is shown below

Note: The value of the Low Temperature Alarm must be less than the
value of the High Temperature Alarm. The value of the Temperature
can be entered only in °C units.

,

Note: The value of the Low Temperature Alarm must be less than the
value of the High Temperature Alarm. The value of the Temperature
can be entered only in °C units.

Note: The value of the High Temperature Alarm must be more than the
value of the Low Temperature Alarm.

,

,

Low Temp Alarm

0.0 C

5.001 Gl/min AD

-0.5 C TA: L

If a High Temperature Alarm occurs, and one of the two optical outputs is assigned
to the High Alarm Event (see Section 4.8) the optically isolated output will be acti­vated when the flow is more than the High Temperature Alarm value.

The Temperature Alarm condition is also indicated on the display Process
Information Screen by displaying H character. A typical display with flow meter
Process Information Screen and activated High Temperature Alarm settings is
shown below.

4.5.4 Temperature Alarm Action Delay

Numerical entry

The Temperature Alarm Action Delay is a time in seconds that the Temperature
value must remain above the high limit or below the low limit before an alarm con­dition is indicated. Valid settings are in the range of 0 to 3600 seconds. A typical
display with flow meter Temperature Alarm Delay settings is shown below.

4.5.5 Temperature Alarm Action Latch Tabular entry

The Temperature Alarm Action Latch settings controls Latch feature when optical­ly isolated outputs are assigned to Temperature Alarm event. Following settings
are available: Disable or Enabled.

By default, flow alarm is non-latching. That means the alarm is indicated only while
the monitored Temperature value exceeds the specified set conditions. If optically
isolated output is assigned to the Temperature Alarm event, in some cases, the
Temperature Alarm Latch feature may be desirable.

38

High Temp Alarm

50.0 C

5.001 Gl/min AD

51.4 C TA: H

Temp Alarm Delay

1 Second

The listed above Temperature Alarm Action Latch selections can be set with the
Up and Dn buttons and are accepted by pressing ENT button.

4.6 Submenu Main Totalizer

The total volume of the liquid is calculated by integrating the actual liquid flow rate
with respect to time. The Main Totalizer value is stored in the EEPROM and saved
every 1 second. In case of power interruption the last saved Totalizer value will be
loaded on the next power on cycle, so Main Totalizer reading will not be lost. The
optional LCD/keypad and digital communication interface commands are provid­ed to:

- reset the totalizer to ZERO

- start the totalizer at a preset flow rate

- assign action at a preset total volume

- start/stop totalizing the flow

4.6.1 Main Totalizer Mode Tabular entry

This function determines whether Main Totalizer is Enabled or Disabled. The fol­lowing selections are available: Enabled or Disabled. The default entry is
Disabled.

The listed above Main totalizer Mode selections can be set with the Up and Dn
buttons and are accepted by pressing ENT button.

39

Temp Alarm Latch

Disabled

Main Total Mode

Disabled

Note: Before enabling the Main Totalizer, ensure that all totalizer settings
are configured properly. Totalizer Start values have to be entered in
%F.S. engineering unit. The Totalizer will not totalize until the flow rate
becomes equal to or more than the Totalizer Start value. Totalizer Stop
values must be entered in currently active volume / mass based
engineering units. If the Totalizer Stop at preset total volume feature is
not required, then set Totalizer Stop value to zero (default settings).

,

40

4.6.2 Main Totalizer Flow Start Numerical entry

The Main Totalizer Start Flow value can be entered in increments of 0.1% from 0.0
– 100.0%F.S. A typical display with flow meter Main totalizer Start Flow settings is
shown below.

4.6.3 Main Totalizer Event Volume Numerical entry

Main Totalizer Event Volume value must be entered in currently active volume /
mass based engineering units. Totalizer action event become true when the total­izer reading and preset "Event Volume" values are equal.

If the Totalizer Event at preset total volume feature is not required, then set
Totalizer Event Volume value to zero (default settings).

A typical display with flow meter Main Totalizer Event Volume settings is shown
below.

4.6.4 Main Totalizer Reset Tabular entry

The Main Totalizers reading can be reset by pressing ENTER button. A typical dis­play with flow meter Main Totalizer Reset screen is shown below.

The next conformation screen will appear only for 2 seconds.

MT Flow Start

5.0 %F.S.

MT Event Volume

0.0 Gal

Reset Main Total

Value?

Press Ent key to

reset Totalizer!

41

If during these two seconds user will press ENTER button again, the Main Totalizer
volume will be reset to zero. Following screen will appear for two seconds.

4.7 Submenu Pilot Totalizer

The total volume of the liquid is calculated by integrating the actual liquid flow rate
with respect to time. The Pilot Totalizer value is stored in the flow meter volatile
memory (SRAM) and saved every 100 ms. In case of power interruption the Pilot
Totalizer volume will be lost (reset to zero). The optional LCD/keypad and digital
communication interface commands are provided to:

- reset the totalizer to ZERO

- start the totalizer at a preset flow rate

- assign action at a preset total volume

- start/stop totalizing the flow

4.7.1 Pilot Totalizer Mode Tabular entry

This function determines whether Pilot Totalizer is Enabled or Disabled. The fol­lowing selections are available: Enabled or Disabled. The default entry is Disabled.

The listed above Pilot totalizer Mode selections can be set with the Up and Dn but­tons and are accepted by pressing ENT button.

The Totalizer has

been reset!

Pilot Total Mode

Disabled

Note: Before enabling the Pilot Totalizer, ensure that all totalizer settings
are configured properly. Totalizer Start values have to be entered in
%F.S. engineering unit. The Totalizer will not totalize until the flow rate
becomes equal to or more than the Totalizer Start value. Totalizer Stop
values must be entered in currently active volume / mass based
engineering units. If the Totalizer Stop at preset total volume feature is
not required, then set Totalizer Stop value to zero (default settings).

,

42

4.7.2 Pilot Totalizer Flow Start Numerical entry

The Pilot Totalizer Start Flow value can be entered in increments of 0.1% from

0.0 – 100.0%F.S. A typical display with flow meter Pilot totalizer Start Flow set-

tings is shown below.

4.7.3 Pilot Totalizer Event Volume Numerical entry

Pilot Totalizer Event Volume value must be entered in currently active volume /
mass based engineering units. Totalizer action event become true when the total­izer reading and preset "Event Volume" values are equal.

If the Totalizer Event at preset total volume feature is not required, then set
Totalizer Event Volume value to zero (default settings). A typical display with flow
meter Pilot Totalizer Event Volume settings is shown below.

4.7.4 Pilot Totalizer Reset Tabular entry

The Pilot Totalizers reading can be reset by pressing ENTER button. A typical dis­play with flow meter Pilot Totalizer Reset screen is shown below.

The next conformation screen will appear only for 2 seconds.

PT Flow Start

10.0 %F.S.

PT Event Volume

0.0 Gal

Reset Pilot Total

Value?

Press Ent key to

reset Totalizer!

43

If during these two seconds user will press ENTER button again, the Pilot Totalizer
volume will be reset to zero. Following screen will appear for two seconds.

4.8 Submenu Optical Outputs Numerical entry

Two sets of optically isolated outputs are provided to actuate user supplied equip­ment. These are programmable via digital interface or optional LCD/Keypad such
that the outputs can be made to switch when a specified event occurs (e.g. when
a low or high flow alarm limit is exceeded or when the totalizer reaches a speci­fied value) or may be directly controlled by user.

The user can configure each optical output action from 11 different options:

- Disabled: No Action (output is not assigned to any events and not energized)

- Low Flow Alarm

- High Flow Alarm

- Range between H&L Flow alarm settings

- Main Totalizer reading exceed set limit

- Pilot Totalizer reading exceed set limit

- Low Temperature alarm (*RTD option only)

- High Temperature alarm (*RTD option only)

- Range between High and Low Temperature alarm (*RTD option only)

- Diagnostic: Output will be energized when any of the Diagnostic events are active

- Manual On Control: Output will be energized until Disabled option will be

selected.

A typical display with Optical Output Function selection is shown below.

The listed above Optical Output selections can be set with the Up and Dn buttons
and are accepted by pressing ENT button.

The Totalizer has

been reset!

Opt #1 function

Disabled

44

4.9 Submenu Flow Meter Configuration

4.9.1 Submenu Flow Meter Low Flow Cut–off

Numerical entry

The low flow cut-off can be selected between 0.0 and 10.0 % of the full scale
range. Flows less than the cut-off value are internally driven to zero and not total­ized. The analog 0-5 vdc or 4-20mA current outputs are set to 0.0 Vdc and 4.00
mA correspondently. The switching threshold for the low flow cut-off has 1.0
%F.S. hysteresis. A typical display with Low Flow Cut–off selection is shown
below.

4.9.2 Submenu Pulse Number Measure Interval

Numerical entry

Signal Processing software algorithm can be set to calculate flow rate based on
two different methods (see Section 4.9.4):

a) number of pulses over preset measure interval
b) pulse width measurement

Both methods calculates frequency of the pulses from the flow meter sensor. The
number of pulses over preset measure interval method convenient when pulsat­ing flow or especially noisy signals are encountered.

This method allows to get stable average flow rate if pulse measure interval is set
to values more than 4000 ms. This parameters effects the flow update rate. With
higher value of the pulse measure interval, the resolution and stability of the flow
measurement improves, but response time become longer. A suggested pulse
measure interval value of 4000 seconds is a good starting point for most applica­ble process fluids. With lower settings the response time of the meter will be
shorter, but resolution and stability will degrade.

The pulse measure interval settings are only related to the number of pulses over
preset measure interval method. Pulse measure interval can be selected between
500 and 60000 ms. A typical display with pulse measure interval selection is
shown below.

Low Flow Cut–off

1.000 %F.S.

4.9.3 Submenu Flow Meter Calibration Factor

Numerical entry

Calibration Factor is defined as the number of pulses from flow sensor per one
gallon of fluid passing through the meter. This is the parameter by which the fac­tory calibrates the flow meter. Change of this parameter is rarely needed by cus­tomers. It is only necessary if you believe the PWE flow meter is no longer accu­rate.

A typical display with Calibration Factor selection is shown below.

4.9.4 Submenu Flow Meter Measure Mode

Tabular entry

Signal Processing software algorithm can be set to calculate flow rate based on
two different methods:

a) number of pulses over preset measure interval
b) pulse width measurement

First method (a) was explained earlier (see Section 4.9.2). Second method (b)
allows get quick response time and best resolution of the flow rate, but with pul­sating or especially noisy flow environment the stability of the flow rate reading
may be compromised. A digital filter (noise reduction algorithm) is available in
the flow meter when pulsating flow or especially noisy signals are encountered
(see Sections 4.9.5 and 4.9.6). The digital filter improves the displayed instanta­neous flow values.

45

Measure Interval

4000 ms

Calibration-Fact

1366 Pulse/Gal

Note: Your PWE Flow Meter was calibrated at the factory for the
specified fluid and full scale flow range (see device’s label or calibration
data sheet). There is no need to adjust the Flow Meter calibration
factor, unless adjustment for specific installation or fluid is needed.
Any alteration of the flow meter calibration factor will VOID calibration
warranty supplied with instrument.

,

46

The digital filter only works with pulse width measurement method and is not
applicable for flow measurement mode (a) – “number of pulses over measure
interval”. A typical display with Measure Mode selection is shown below. By
default unit shipped from the factory with Measure Mode set to “Pulse Width”.

4.9.5 Submenu Noise Reduction Filter Damping

Time Numerical entry

A noise reduction filter algorithm (running average of the individual flow inputs) is
available in the flow meter when pulsating flow or especially noisy signals are
encountered. There are two parameters that make up Signal Processing Control:
Damping Time and Number of Samples. They are described individually below.
Damping Time: The damping value can be selected between 0 and 99 seconds.
The value represents the response time of the running average flow rate change.
The higher the damping value the longer the response time of the filter. If noise
reduction filter is not desired it may be disabled by setting Damping Time param­eter to zero. By default unit shipped from the factory with Damping Time value set
to 5. A typical display with Damping Time selection is shown below.

4.9.6 Submenu Noise Reduction Filter Sample

Number Numerical entry

This is the second parameter that makes up noise reduction filter algorithm. The
sample number value can be selected between 1 and 32. The number of samples
value represents the number of previous individual inputs used to calculate the
average value. Eventually the number of samples in the running average also
affects the response time. The more samples is used, the more inertial flow out­put reading will be to the actual flow change. A suggested nominal number of 5
samples is a good starting point for most applicable process fluids. A typical dis­play with Sample Number selection is shown below.

Measure Mode

Pulse Width

NRF Damping Time

05 Seconds

4.9.7 Submenu Flow Linearizer Tabular entry

The Flow Linearization algorithm may be used to improve linearity of the flow
measurement. The Flow Linearization table is built during factory calibration pro­cedure and stored in the device EEPROM. The Flow Linearizer can be used with
both flow measurement algorithms. By default unit shipped from the factory with
enabled Flow Linearizer. A typical display with Flow Linearizer selection is shown
below.

The listed above Flow Linearizer selections can be set with the Up and Dn buttons
and are accepted by pressing ENT button.

4.9.8 Submenu Fluid Density Numerical entry

When the flow is displayed in gravimetric (mass based) units (e.g: g, kg, t, pound)
a density value of the actual fluid must be entered for the flow rate and total cal­culation. The translation conversion to mass flow is settable between 0.01 and

5.00000 g/cm3. A typical display with Fluid Density selection is shown below.

4.9.9 Submenu Pilot Calibration timer Tabular entry

The Pilot Calibration timer accumulates operational hours since last time unit was
calibrated. The value of the timer may be reset by the user by pressing Ent button.
A typical display with Calibration timer selection is shown below.

47

NRF Sample Numb.

05

Flow Linearizer

Enabled

Fluid Density

1.12500 g/cm3

Pilot Cal. Timer

70.0 Hours

48

Once Ent button is pressed the next conformation screen will appear only for 2
seconds.

If during these two seconds user will press ENTER button again, the Calibration
Timer value will be reset to zero.

4.10 Submenu LCD Back Light Numerical Entry

This parameter indicates the level (intensity) of the LCD back light. The value of
the LCD back light level can be entered in increments of 1% from 0 - 80%F.S. If
LCD back light is not desired, it can be turn off by setting back light level to zero.
A typical display with LCD Back Light selection is shown below.

4.11 Submenu Alarm Events Log

PWE series Flow Meters are equipped with a self-diagnostic alarm event log which
is available via digital interface and on screen LCD indication (for devices with
optional LCD). A typical display with Alarm Events Log selection is shown below.

Press Ent key to

reset Cal. Timer

LCD Back Light

50 %F.S.

Sub Menu

Alarm Events Log

49

The following diagnostic events are supported:

Event

Number

Diagnostic Alarm Event Description

LCD bit

Code

1 CPU Temperature too High 0

2 Flow rate more than 125% F.S. 1

3 High Flow Alarm 2

4 Low Flow Alarm 3

5 High Fluid Temperature Alarm 4

6 Low Fluid Temperature Alarm 5

7 Fluid Temperature Above measurement Limit 6

8 Fluid Temperature Below measurement Limit 7

9 Main Totalizer exceed set event volume limit 8

10 Pilot Totalizer exceed set event volume limit 9

11 EEPROM Failure 10

12 DC/DC converter Voltage too High 11

13 DC/DC converter Voltage too Low 12

14 Communication Error 13

15 Reserved 14

16

FATAL ERROR (reset or maintenance service is
required for return in to the normal operation)

15

Any Alarm events that may have occurred (Event 0 to Event F) are
stored in the internal register. All detected events remain stored until the
register is manually reset (by pressing ENTER key or by means of the
digital communication interface). The Alarm Event Log register is
mapped to the SRAM (volatile memory). In case of power interruption
the Alarm Event Log register will be automatically reset.

,

50

4.11.1 Submenu Alarm Events Log Status

Each alarm event has fixed designated position on the LCD screen. Most signifi­cant event code (F) is set on the right side of the LCD and least significant event
code (0) is set on the left side of the LCD. If event is not present (not active) it is
represented on the LCD as dot (.) character. If event is present (or was detected
in the past) it is represented on the LCD with corresponding character. A typical
display with Alarm Events Log Status without any detected events is shown below.

In the example shown below, event 1 (Flow rate more than 125% F.S.) and event
2 (High Flow Alarm) have occurred since the last reset.

In order to reset (clear) Event Log press Ent button. Following screen will appear
just for two seconds.

If during these two seconds user will press Ent button again, the Alarm Event Log
will be cleared.

Event Log Status

. . . . . . . . . . . . . . . .

Event Log Status

. . 23 . . . . . . . . . . . .

Press Ent key to
Clear events Log

Note: Each Alarm Event can be individually masked (disabled) using
Event Log Mask menu selection (see Section 4.11.3) If alarm event is
masked (disabled) it will not be registered in the Event Status Log even
actual event has occurred.

,

51

4.11.2 Submenu Alarm Events List

This menu selection provides list of the descriptions and corresponding code for
all supported events.

If ENTER is pressed again, the description for each error is displayed:

The shown above Event List selections can be scrolled with the Up and Dn but­tons. By pressing ENT or Esc buttons user may exit from scrolling mode.

4.11.3 Submenu Alarm Events Log Mask

With this menu selection user may individually mask (disable) any Alarm Event. A
typical display with Alarm Events Mask selection is shown below.

In the example shown above, event 1 (Flow rate more than 125% F.S.) is masked
with asterisk. In order to change event mask settings user should press Ent but­ton. The flashing cursor will appear on the left of the LCD screen (on the 0 event
position). Use Dn button to move to desired event code. Use Up button to change
mask status (asterisk represent masked event). Use Ent button to accept and save
new mask settings.

4.12 Submenu Diagnostic

This submenu provides troubleshooting information about the meter internal vari­ables. These items are informational only and may not be changed (read only).

Events List

Press Enter Key

Events List

0-CPU Temp. High

Event Log Mask

0*23456789ABCDEF

52

4.12.1 Submenu Raw Pulses Count

This menu selection provides number of pulses from the flow sensor within spe­cific measurement interval.

In the example shown above the raw pulses count is 400 within 4000 ms meas­uring interval, which represents pulse frequency of 100 Hz.

4.12.2 Submenu Pulse Frequency

This menu selection provides raw value of the frequency from the pulse width
measurement circuitry.

4.12.3 Submenu Raw RTD reading (RTD option only)

This menu selection provides raw value of the ADC counts for RTD circuitry. The
reading only applicable for PWE meters with optional RTD functionality.

4.12.4 Submenu DAC_A Flow Output

This menu selection provides current value of the DAC register for analog flow
output circuitry.

Raw Pulses Count

400 T= 4000mS

Pulse Frequency

100.00 Hz

Raw RTD Reading

1250 Counts

DAC_A Output (F)

3125 Counts

53

4.12.5 Submenu DAC_B Temperature Output

This menu selection provides current value of the DAC register for analog tem­perature output circuitry.

4.12.6 Submenu CPU Temperature

This menu selection provides current value of the PCB and CPU temperature in °C.

4.12.7 Submenu Raw VCC Reading

This menu selection provides current normalized value of the DC/DC converter
output in counts. The typical values are in the range between 2800 and 3200
counts.

5. Analog Output Signals

5.1 Analog Output Signals configuration

PWE series Flow Meters are equipped with calibrated 0-5 Vdc and/or 4-20 mA out­put signals for flow and temperature* process variables. The set of the jumpers
(J3A, J3B, J3C, J3D, J3E, J3F) located on the top of the flow meter, inside of the
maintenance access window (see Figure 5-1 “PWE configuration jumpers”) are
used to switch between 0-5 Vdc or 4-20 mA output signals. Jumpers J3A, J3B,
J3C are used to set flow analog output type and jumpers J3D, J3E, J3F are used
to set temperature* analog output type (see Table 5-1). Jumper J3G is used to
configure RS-485 termination resistor (by default is off).

DAC_B Output (T)

1358 Counts

CPU Temperature

35.8 C

Raw VCC Reading

3065 Counts

54

Figure 5-1 PWE configuration jumpers

Table 5-1

Function

Analog Flow Output Analog Temp. Output* RS-485

J3A J3B J3C J3D J3E J3F J3G

Analog
Output

0-5 Vdc 2-3 5-6 8-9 11-12 14-15 17-18

4-20 mA 1-2 4-5 7-8 10-11 13-14 16-17

RS-485

220 Ohm

Termination

Resistor

OFF 20-21

ON 19-20

5.2 Analog Output Signals calibration

Note: The analog output available on the PWE Flow Meter was calibrated
at the factory for the specified fluid and full scale flow range (see the
device’s front label). There is no need to perform analog output
calibration unless the EEPROM IC was replaced or offset/span
adjustment is needed. Any alteration of the analog output scaling
variables in the EEPROM table will VOID calibration warranty supplied

with instrument.

,

55

Note: It is recommended to use the Aalborg®supplied calibration and
maintenance software for analog output calibration. This software
includes an automated calibration procedure which may radically
simplify calculation of the offsets and spans variables and, the reading
and writing for the EEPROM table.

,

The PWE analog output calibration involves calculation and storing of the offset
and span variables in the EEPROM for each available output. The 0-5 Vdc output
has only scale variable and 20 mA output has offset and scale variables. The fol­lowing is a list of the EEPROM variables used for analog output computation:

Analog Flow Output variables

Index Name Description

39 FoutScaleV - DAC 0-5 Vdc Flow Analog Output Scale
41 FoutScale_mA - DAC 4-20mA Flow Analog Output Scale
42 FoutOffset_mA - DAC 4-20mA Flow Analog Output Offset

Analog Temperature Output variables*

Index Name Description

43 ToutScaleV - DAC 0-5 Vdc Temperature Analog Output Scale
45 ToutScale_mA - DAC 4-20mA Temperature Analog Output Scale
46 ToutOffset_mA - DAC 4-20mA Temperature Analog Output Offset

5.2.1 Initial Setup

Power up the PWE Flow Meter for at least 15 minutes prior to commencing the
calibration procedure. Make sure absolutely no flow takes place through the meter.
Establish digital RS-485/RS-232 communication between PC (communication ter­minal) and PWE. The commands provided below assume that calibration will be
performed manually (w/o Aalborg

®

supplied calibration and maintenance software)
and the device has RS-485 address 11. If Aalborg®supplied calibration and main­tenance software is used, skip the next section and follow the software prompts.

Enter Backdoor mode by typing: !11,MW,1000,1[CR]
Unit will respond with: !11,BackDoorEnabled: Y
Disable DAC update by typing: !11,WRITE,4,Y[CR]
Unit will respond with: !11,DisableUpdate: Y

5.2.2 Flow 0-5 Vdc analog output calibration

1. Install jumpers J3A, J3B and J3C on the PC board for 0-5 Vdc output

(see Table 5-1).

2. Connect a certified high sensitivity multi meter set for the voltage

measurement to the pins M (+) and K (-) of the PWE 12 Pin "M16" connector.

3. Write 4000 counts to the DAC_A channel: !11,WRITE,0,4000[CR]

4. Read voltage with the meter and calculate FOutScaleV value:

5. Save FOutScaleV in to the EEPROM: !11,MW,39,X[CR]

Where: X – the calculated FoutScaleV value.

5.2.3 Flow 4-20 mA analog output calibration

1. Install jumpers J3A, J3B and J3C on the PC board for 4-20 mA output

output (see Table 5-1).

2. Connect a certified high sensitivity multi meter set for the current

measurement to pins M (+) and K (-) of the PWE 12 Pin "M16" connector.

3. Write 4000 counts to the DAC_A channel: !11,WRITE,0,4000[CR]

4. Read current with the meter and calculate FoutScale_mA value:

5. Write zero counts to the DAC_A channel: !11,WRITE,0,0CR]

6. Read offset current with the meter and calculate FoutOffset_mA value:

7. Save FoutScale_mA in to the EEPROM: !11,MW,41,Y[CR]

Save FoutOffset_mA in to the EEPROM: !11,MW,42,Z[CR]

Where: Y – the calculated FoutScale_mA value.

Z – the calculated FoutOffset_mA value.

56

FoutScaleV=

20000

Reading[V]

FoutScale_mA =

4000

Reading[mA]

FoutOffset_mA=-FOutScale_mA*Offset_Reading[mA]

57

5.2.4 Temperature 0-5 Vdc analog output

calibration*

1. Install jumpers J3D, J3E and J3F on the PC board for 0-5 Vdc output

(see Table 5-1).

2. Connect a certified high sensitivity multi meter set for the voltage

measurement to the pins L (+) and K (-) of the PWE 12 Pin "M16"
connector.

3. Write 4000 counts to the DAC_B channel: !11,WRITE,1,4000[CR]

4. Read voltage with the meter and calculate TOutScaleV value:

5. Save TOutScaleV in to the EEPROM: !11,MW,43,X[CR]

Where: X – the calculated ToutScaleV value.

5.2.5 Temperature 4-20 mA analog output

calibration*

1. Install jumpers J3D, J3E and J3F on the PC board for 4-20 mA output

output (see Table 5-1).

2. Connect a certified high sensitivity multi meter set for the current

measurement to pins L (+) and K (-) of the PWE 12 Pin "M16" connector.

3. Write 4000 counts to the DAC_B channel: !11,WRITE,1,4000[CR]

4. Read current with the meter and calculate ToutScale_mA value:

5. Write zero counts to the DAC_B channel: !11,WRITE,1,0CR]

6. Read offset current with the meter and calculate ToutOffset_mA value:

7. Save ToutScale_mA in to the EEPROM: !11,MW,45,Y[CR]

Save ToutOffset_mA in to the EEPROM: !11,MW,46,Z[CR]

ToutScaleV=

20000

Reading[V]

ToutScale_mA=

4000

Reading[mA]

ToutOffset_mA=-TOutScale_mA*Offset_Reading[mA]

58

Where: Y – the calculated ToutScale_mA value.

Z – the calculated ToutOffset_mA value.

Enable DAC update by typing: !11,WRITE,4,N[CR]
Unit will respond with: !11,DisableUpdate: N
Close BackDoor access by typing: !11,MW,1000,0[CR]
Unit will respond with: !11,BackDoorEnabled: N

6. PWE FLOW CALIBRATION PROCEDURES

Aalborg

®

Instruments' Flow Calibration Laboratory offers professional calibration
support for PWE Flow Meters using precision calibrators under strictly con­trolled conditions. NIST traceable calibrations are available. Calibrations can also
be performed at customers' site using available standards.

6.1 Connections and Initial Warm Up

Power up the PWE Flow Meter for at least 1minutes prior to commencing the
calibration procedure. Establish digital RS-485/RS-232 communication between
PC (communication terminal) and the PWE. Start Aalborg

®

supplied calibration

and maintenance software on the PC.

Note: When done with the analog output calibration make sure the

DAC update is enabled and the BackDoor is closed

(see command below).

,

NOTE: REMOVAL OF THE FACTORY INSTALLED CALIBRATION
SEALS AND/OR ANY ADJUSTMENTS MADE TO THE METER, AS
DESCRIBED IN THIS SECTION, WILL VOID ANY CALIBRATION
WARRANTY APPLICABLE.

,

Note: All adjustments in this section are made from the outside of the
meter via digital communication interface between a PC (terminal) and
PWE or via local LCD/KeyPad. There is no need to disassemble any part
of the instrument or perform internal PCB component (potentiometers)
adjustment.

,

59

6.2 Flow Meter Span Calibration

Using Aalborg

®

supplied calibration and maintenance software start Set Span
procedure by navigating to the Tools/Set Span/PulseCounts menu. The software
will display screen with current frequency and calculated Calibration Factor.
Using the installation flow regulator, adjust the flow rate to 100% of full scale
flow. Check the flow rate indicated against the flow calibrator. Once required flow
rate is established click Save button. The new Calibration Factor will be saved in
to the EEPROM table (index 61) and device linearization table (EEPROM indexes
62-83) will be initialized with default linear values.

Calibration Factor also can be adjusted using local LCD/KeyPad interface (see
Section 4.9.3).

6.3 Flow Meter Linearization Table Calibration

The PWE flow linearization table calibration involves building a table of the actual
flow values (EEPROM indexes 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82) and cor­responding sensor readings (EEPROM indexes 63, 65, 67, 69, 71, 73, 75, 77, 79,
81, 83). Actual flow values are entered in normalized fraction format: 100.000 %
F.S. corresponds to 1.000000 flow value and 0.000 % F.S. corresponds to

0.000000 flow value. The valid range for flow values is from 0.000000 to 1.000000
(note: PWE will accept up to 6 digits after decimal point). Sensor readings are
entered in pulses and should always be in the range of 10 to 4000. There are 11
elements in the table so the data should be obtained at an increment of 10.0 % of
full scale (0.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0, 80.0, 90.0 and 100.0 %
F. S .) .

Note: Your PWE Flow Meter was calibrated at the factory for the
specified fluid and full scale flow range (see device’s front label). There
is no need to adjust the Calibration Factor or Flow linearization table
unless linearity adjustment is needed, flow range has to be changed.
Any alteration of the Calibration Factor or flow linearization table will

VOID calibration warranty supplied with instrument.

,

Note: Described above procedure will reinitialize entire Linearization
table. If it is desirable to keep existing linearization table and only minor
adjustment of the calibration curve is required it is recommended
perform linearization table adjustment starting from 90% F.S.
(see Section 6.3).

,

60

If a new calibration table is going to be created, it is recommended to start cali­bration from 100% full scale. If only linearity adjustment is required, calibration
can be started in any intermediate portion of the gas table.
Using the flow regulator, adjust the flow rate to 100% of full scale flow. Check the
flow rate indicated against the flow calibrator. Observe the flow reading on the
PWE. If the difference between calibrator and PWE flow reading is more than 0.5%
F.S., make a correction in the sensor reading in the corresponding position of the
linearization table (see Index 83).

If the PWM flow reading is more than the calibrator reading, the number of counts
in the index 83 must be decreased. If the PWE flow reading is less than the cali­brator reading, the number of counts in the index 83 must be increased. Once
Index 83 is adjusted with a new value, check the PWE flow rate against the cali­brator and, if required, perform additional adjustments for Index 83.
If a simple communication terminal is used for communication with the PWE, then
“MW” (Memory Write) command from the software interface commands set may
be used to adjust sensor value in the linearization table (see section 8.3 for com­plete software interface commands list). Memory Read “MR” command can be
used to read the current value of the index.

Assuming the PWE is configured with RS-485 interface and has address “11”, the
following example will first read the existing value of Index 83 and then write a new
adjusted value:

!11,MR,83[CR] - reads EEPROM address 83
!11,MW,83,1200[CR] - writes new sensor value (1200 counts) in to the index 83

Once 100% F.S. calibration is completed, the user can proceed with calibration for
another 9 points of the linearization table by using the same approach.

Note: Do not alter memory index 62 (must be 0.0) and 63 (must be 0
counts). These numbers represent zero flow calibration points and
should not be changed.

,

Note: Once memory index 83 is changed the device firmware will
automatically update Calibration Factor (EEPROM index 61).

,

Note: It is recommended to use Aalborg®supplied calibration and
maintenance software for linearization table calibration. This software
includes an automated calibration procedure which may radically
simplify reading and writing for the EEPROM linearization table.

,

7. RS-485/RS-232 SOFTWARE
INTERFACE COMMANDS

7.1 General

The standard PWE comes with an RS-485 interface. For the optional RS-232 inter­face, the start character (!) and two hexadecimal characters for the address must
be omitted. The protocol described below allows for communications with the unit
using either a custom software program or a “dumb terminal.” All values are sent
as printable ASCII characters. For RS-485 interface, the start character is always
(!). The command string is terminated with a carriage return (line feeds are auto­matically stripped out by the PWE). See Section 2.2.5 for information regarding
communication parameters and cable connections.

7.2 Commands Structure

The structure of the command string:

!<Addr>,<Cmd>,Arg1,Arg2,Arg3,Arg4<CR>

Where:

! Start character **
Addr RS485 device address in the ASCII representation of hexadecimal

(00 through FF are valid).**
Cmd The one or two character command from the table below.
Arg1 to Arg4 The command arguments from the table below.

Multiple arguments are comma delimited.
CR Carriage Return character.

** - OMIT FOR RS232 INTERFACE.

Several examples of commands for RS-485 option follow. All assume that the PWE
meter has been configured for address 18 (12 hex) on the RS485 bus:

1. To get a flow reading: !12,F<CR>

The device will reply: !12,50.0<CR> (Assuming the flow is at 50.0% FS)

2. To get current Flow Alarm status: !12,FA,R<CR>

The device will reply: !12,FA,N<CR> > (Assuming no alarm conditions)

3. To get a Main Totalizer reading: !12,MT,R<CR>

The device will reply: !12,MT:93.05<CR>

(Assuming the Main totalizer reading is 93.5)

61

4. Set the flow high alarm limit to 85% of full scale flow rate:
!12,FA,H,85.0<CR>

The device will reply: !12,FA,H:85.0<CR>

Several examples of commands for RS-232 option follow.

1. To get a flow reading: F<CR>

The device will reply: 50.0<CR> (Assuming the flow is at 50.0% FS)

2. To get current Flow Alarm status:FA,R<CR>

The device will reply: FA,N<CR> > (Assuming no alarm conditions)

3. To get a Main Totalizer reading: MT,R<CR>

The device will reply: MT:93.05<CR>

(Assuming the Main totalizer reading is 93.5)

4. Set the flow high alarm limit to 85% of full scale flow rate: FA,H,85.0<CR>

The device will reply: FA,H:85.0<CR>

62

63

AALBORG PWE METER ASCII SOFTWARE INTERFACE COMMANDS

NOTE: AN "*" INDICATES POWER UP DEFAULT SETTINGS.

AN "**"INDICATES OPTIONAL FEATURE NOT AVAILABLE ON ALL MODELS.

COMMAND

NAME

DESCRIPTION

NO.

COMMAND SYNTAX

COMMAND

ARGUMENT 1 ARGUMENT 2

ARGUMENT 3 ARGUMENT 4 RESPONSE

Flow

Requests the current flow

sensor reading in current EU

1

F

<Value> (Actual flow in

current engineering units)

Temperature

**

Requests the current

temperature reading in current

EU (°C or °F)

2 T

<Value> (Actual temp. in

current engineering units)

DIagnostic

Events

Read/Reset current status of

Diagnostic Events Log register.

3 DE

NO ARGUMENT

(read status)

DE:0x10

0x10 – diagnostic word

(16 bits wide)

R (reset Event

Log register to

0x00)

DE:0x0

Diagnostic

Mask

Display/Set Diagnostic Events

Mask register

See list of the Diagnostic

Events below.

4

DM

NO ARGUMENT

(read current

Diagnostic Events

Mask register)

DM:0x9FFF

0x9FFF – diagnostic mask

(16 bits wide).

Set bit - Enable

Clear bit - Disable

<Value>

0x0000

To 0xFFFF

NOTE: all 6

characters are

required

DM:0x9FFF

7.3 ASCII Commands Set

64

COMMAND

NAME

DESCRIPTION

NO.

COMMAND SYNTAX

COMMAND ARGUMENT 1 ARGUMENT 2 ARGUMENT 3 ARGUMENT 4 RESPONSE

Meter Info

Requests meter configuration

info:

- full scale range (L/min)

- RTD option support(Y,N)

- Analog Flow Output

configuration (V,C)

- Analog Temp. Output

configuration (V,C)

5

MI

MI: 18.92706,Y,V,V

Y – RTD support

N – No RTD support

V – 0-5 Vdc output

C – 4-20mA output

Flow Alarms

Sets / reads the status of the

flow alarms.

Note: High and Low limits

have to be entered in the

%F.S. High alarm value has to

be more than Low alarm

value.

Alarm conditions:

Flow > High Limit = H

Flow < Low Limit = L

Low < Flow < High = N

6 FA

H (high flow limit)

<Value>(0-100%FS)

FAH:<Value (%F.S.)>

L (low flow limit)

<Value>(0-100%FS) FAL:<Value (%F.S.)>

A (action delay in

seconds)

<Value> (0-3600

sec.)

FAA:<Value (sec)>

E (enable alarm)

FA:E

D (disable alarm)*

FA:D

R (read current

status)

FA:N (no alarm)

FA:H (high alarm)

FA:L (low alarm)

S (Read current

settings)

FAS:M,L,H,D,B where:

M – mode (E/D)

L – Low settings (%FS)

H – High settings (%FS)

D – Action Delay (sec)

B – Latch mode (0-3)

B Block (Latch)

mode

<Value>

(0-disabled*)

(1-enabl’d L)

(2-enabl’d H)

(3 –both L,H)

FAB:<Value> where:

Value = 0 – 3

65

COMMAND

NAME

DESCRIPTION

NO.

COMMAND SYNTAX

COMMAND

ARGUMENT 1

ARGUMENT 2 ARGUMENT 3 ARGUMENT 4 RESPONSE

Temperature

Alarms**

Sets / reads the status of the

temperature alarms.

Note: High and Low limits

have to be entered in the °C.

High alarm value has to be

more than Low alarm value.

Alarm conditions:

Temp. > High Limit = H

Temp. < Low Limit = L

Low < Temp. < High = N

7 TA

H (high flow limit)

<Value>

(-10.1-100°C)

TAH:<Value (°C)>

L (low flow limit)

<Value>

(-10.1-100 °C)

TAL:<Value (°C)>

A (action delay in

seconds)

<Value> (0-3600

sec.)

TAA:<Value (sec)>

E (enable alarm) TA:E

D (disable alarm)* TA:D

R (read current

status)

TA:N (no alarm)

TA:H (high alarm)

TA: L (low alarm)

S (Read current

settings)

TAS:M,L,H,D,B where:

M – mode (E/D)

L – Low settings (°C)

H – High settings (°C)

D – Action Delay (sec)

B – Latch mode (0-3)

B Block (Latch)

mode

<Value>

(0-disabled*)

(1-enabl’d L)

(2-enabl’d H)

(3 –both L,H)

TAB:<Value> where:

Value = 0 – 3

66

COMMAND

NAME

DESCRIPTION

NO.

COMMAND SYNTAX

COMMAND ARGUMENT 1 ARGUMENT 2

ARGUMENT 3

ARGUMENT 4

RESPONSE

Optical

Outputs

Assigns action of the two

optical outputs. The optical

output becomes active when

the condition specified by an

Argument 2 becomes true.

Argument 2:

D - no action, disabled*

FL - low flow alarm

FH - high flow alarm

FR - Range between High &

Low alarms

MT - main tot. reading > limit

PT - pilot tot. reading > limit

TL - low temp. alarm

TH - high temp. alarm

TR - Range between High &

Low temp. alarms

MC - Manual On Control

DE - Diagnostic Events

8 O

1 (output #1)

2 (output #2)

D * O1:D or O2:D

FL

O1:FL or O2:FL

FH

O1:FH or O2:FH

FR

O1:FR or O2:FR

MT

O1:MT or O2:MT

PT

O1:PT or O2:PT

TL

O1:TL or O2:TL

TH

O1:TH or O2:TH

TR

O1:TR or O2:TR

DE

O1:DE or O2:DE

MC

O1:MC or O2:MC

S (read

current

settings)

Ox:D

Main

Totalizer

Sets and controls action of the

Main flow totalizer.

NOTE:

Main Totalizer reading is

stored in EEPROM (non

volatile) memory. Power cycle

will not affect Main Totalizer

reading.

9

MT

Z (Reset to zero)

MTZ

F (start totalizer

at flow %F.S.)

MTF:<value>

L (Limit gas

volume in

current E.U.)

MTL:<value>

D (disable

totalizer)*

MT:D

E(enable totalizer)

MT:E

R(read current

totalizer volume)

MTR:<value>

(in current EU)

S(setting status)

MTS:Mode,Start,Limit

67

COMMAND

NAME

DESCRIPTION

NO.

COMMAND SYNTAX

COMMAND ARGUMENT 1

ARGUMENT 2 ARGUMENT 3

ARGUMENT 4 RESPONSE

Pilot

Totalizer

Sets and controls action of

the Pilot flow totalizer.

NOTE:

Pilot Totalizer reading is

stored in SRAM (volatile)

memory. Power cycle will

reset Pilot Totalizer reading

to zero.

10

PT

Z (Reset to zero) PTZ

F (start totalizer

at flow %F.S.)

<value>

(flow %FS)

PTF:<value>

L (Limit gas

volume in

current E.U.)

<value>

(gas volume)

PTL:<value>

D (disable

totalizer)*

PT:D

E (enable

totalizer)

PT:E

R (read current

totalizer volume)

PTR:<value>

(in current EU)

S (setting status)

PTS: Mode, Start, Limit

Low Flow

Cut Off

Display /Change Meter Low

Flow Cut Off settings in %F.S.

11

CO

<Cut off Value>

(0 to 10.0%)

CO:<Cut off Value>

Example: CO:2.0

No Argument

(Returns Current

Cut off Value

settings)

CO:<Cut off Value>

Example: CO:2.0

Fluid

Density

Read and set Fluid Density in

g/cm3

12

FD

(New Density

Value) 0.01

Density 5.0

g/cm3

FD:<value>

No Argument

(Returns Current

Density in g/cm3)

FD:<value>

Example: FD:1.000

68

COMMAND

NAME

DESCRIPTION

NO.

COMMAND SYNTAX

COMMAND

ARGUMENT 1 ARGUMENT 2

ARGUMENT 3 ARGUMENT 4 RESPONSE

Units

Set the units of measure for

gas flow and totalizer reading.

Note: The units of the totalizer

output are not per unit time.

For user defined units:

k-factor value represents

conversion value from L/min.

Time base argument:

S – seconds

M – minutes

H – hours

Density argument:

Y – use density

N – do not use density

13 U

%(% full scale)*

U:%

mL/sec

U:mL/sec

mL/min U:mL/min

mL/hr

U:mL/hr

L/sec U:L/sec

L/min U:L/min

L/hr

U:L/hr

m3/sec

U:m3/sec

m3/min U:m3/min

m3/hr

U:m3/hr

f3/sec

U:f3/sec

f3/min

U:f3/min

f3/hr

U:f3/hr

g/sec U:g/sec

g/min U:g/min

g/hr U:g/hr

kg/sec U:kg/sec

kg/min U:kg/min

kg/hr

U:kg/hr

Lb/sec

U:Lb/sec

Lb/min

U:Lb/min

Lb/hr U:Lb/hr

Gl/sec U:Gl/sec

Gl/min U:Gl/min

Gal/hr U:Gal/hr

t/sec

U:t/sec

t/min U:t/min

t/hr U:t/hr

USER (user defined) U:USER,<F>,<T>,<D>

No Argument

(status)

U,<EU name>

69

COMMAND

NAME

DESCRIPTION

NO.

COMMAND SYNTAX

COMMAND ARGUMENT 1 ARGUMENT 2 ARGUMENT 3

ARGUMENT 4

RESPONSE

Maintenance

Timer

Hours since last time unit was

calibrated.

NOTE: has to be reset to zero

after calibration.

14

C

R (read timer)

CR:<value>

Z (set timer to

zero)

CZ

Pulse

Measure

Interval

Display/Change Meter Pulse

Measure Interval settings

Note: Pulse Measure Interval

has to be in the range:

500mS MI 60000 mS

15

I

<new value> in

mS

I:<value>

Example: I:2000

No Argument

(Returns Current

MI settings in mS)

I:<value>

Example: I:2000

Flow

Measure

Mode

Display/Change Meter Flow

Measuring Mode

Following measurement

modes are supported:

W - Pulse Width

C - Number of Pulses per

measure interval

16 MM

<New Mode>

W - Pulse Width*

C - # of Pulses

MM:<value>

Example: MM:W

No Argument

(Returns Current

settings)

MM:<value>

Example: MM:W

Flow Meter

Linearizer

Enable/Disable flow meter

Linearizer

17

FL

<New Value>

E or D

FL:<value>

Example: FL:E

No Argument

(Returns Current

Linearizer settings)

FL:<value>

Example: FL:E

LCD Back

Light**

Display/Change LCD Back

Light settings

Note: LCD Back Light settings

has to be in the range:

0% BL 80%

18 BL

(New LCD Back

Light value)

0 - 80%

BL: <BL Value>

Example: BL:50

No Argument

(Returns Current

LCD Back Light

settings)

BL: < BL Value >

Example: BL:50

70

COMMAND

NAME

DESCRIPTION

NO.

COMMAND SYNTAX

COMMAND

ARGUMENT 1

ARGUMENT 2

ARGUMENT 3 ARGUMENT 4

RESPONSE

Noise

Reduction

Filter

Noise Reduction Filter

parameter settings. Following

arguments supported:

T - Running Average Time

Interval (0-99 seconds)

N -Running Average Number

of samples (1-32)

19 NR

T (time interval) NRT:5

N (number of

samples)

NRN:5

S (status) NR:5,5

Read

EEPROM

Memory

Reads the value in the

specified memory location.

20

MR

0 to 100

(Memory Table

Index)

<memory value>

Write

EEPROM

Memory

Writes the specified value to

the specified memory

location. Use Carefully, can

cause unit to malfunction.

(Note: Some addresses are

write protected!)

21 MW

20 to 100

(Memory Table

Index)

Value

MW,XXX,<Value>

where:

XXX=Table Index

Example:

MW,100,”Meter#6”

UART Error Codes:

1 - Not Supported Command or Back Door is not enabled.

2 - Wrong # of Arguments.

3 - Address is Out of Range (MR or MW commands).

4 - Wrong # of the characters in the Argument.

5 - Attempt to Alter Write Protected Area in the EEPROM.

6 - Proper Command or Argument is not found.

7 - Wrong value of the Argument.

8 - Reserved.

9 - Manufacture specific info EE KEY (wrong key or key is disabled).

Diagnostic events codes and bit position:

1. CPU Temp. High 0

2. Flow > 125% F.S. 1

3. High Flow Alarm 2

4. Low Flow Alarm 3

5. High Temperature Alarm 4

6. Low Temperature Alarm 5

7. Temperature Above Limit 6

8. Temperature Below Limit 7

9. Main Totalizer Limit 8

10. Pilot Totalizer Limit 9

11. EEPROM Failure A

12. DC/DC converter Voltage too High B

13. DC/DC converter Voltage too Low C

14. Communication Error D

15. Reserved E

16. Fatal ERROR F

71

8. TROUBLESHOOTING

8.1 Common Conditions

Your PWE Flow Meter was thoroughly checked at numerous quality control points
during and after manufacturing and assembly operations. It was calibrated accord­ing to your desired flow and pressure conditions for a given fluid. It was carefully
packed to prevent damage during shipment. Should you feel that
the instrument is not functioning properly, please check for the following common
conditions first:

Are all cables connected correctly? Are there any leaks in the installation? Is the
power supply correctly selected according to requirements? When several meters
are used a power supply with appropriate current rating should be selected. Were
the connector pinouts matched properly? When interchanging with other
manufacturers' equipment, cables and connectors must be carefully wired for cor­rect pin configurations. Is the pressure differential across the instrument suffi­cient?

No INDICATION LIKELY REASON SOLUTION

1

LCD Display remains blank
when unit is powered up.
No response when flow is
introduced from analog
outputs 0-5 Vdc or 4-20
mA.

Power supply is bad or
polarity is reversed.

Measure voltage on pins A and B
of the 12 pin M16 connector. If
voltage is out of specified range,
then replace power supply with a
new one. If polarity is reversed
(reading is negative) make correct
connection.

PC board is defective. Return PWE to factory for repair.

2 LCD Display reading or

/and flow analog output 0­5Vdc signal fluctuate in
wide range during flow
measurement.

Flow output 0-5 Vdc signal
(pin L of the 12 pin M16 con­nector) is shorted on the GND
or overloaded.

Check external connections to pin
L of the 12 pin M16 connector.
Make sure the load resistance of
the equipment connected to the
flow 0-5 Vdc output is more than
1000 Ohm.

3 LCD Display reading or

/and temperature analog
output 0-5Vdc signal fluc­tuate in wide range during
flow measurement.

Temperature output 0-5 Vdc
signal (pin M of the 12 pin
M16 connector) is shorted on
the GND or overloaded.

Check external connections to pin
M of the 12 pin M16 connector.
Make sure the load resistance of
the equipment connected to the
flow 0-5 Vdc output is more than
1000 Ohm.

4 LCD Display reading does

correspond to the correct
flow range, but 0-5 Vdc
output signal does not
change (always the same
reading or around zero).

Output 0-5Vdc schematic is
burned out or damaged.

Return PWE to factory for repair.

Analog flow output scale and
offset variable are corrupted.

Restore original EEPROM scale and
offset variable or perform analog
output recalibration (see section

5.2).

72

No INDICATION LIKELY REASON SOLUTION

5 LCD Display flow reading

and 0-5 Vdc output voltage
do correspond to the
correct flow range, but 4-20
mA output signal does not
change (always the same or
reading around 4.0 mA).

External loop is open or load
resistance more than 500
Ohm.

Check external connections to pins
L and K of the 12 pin M16 connec­tor. Make sure the loop resistance
is less than 500 Ohm.

Flow output 4-20 mA schemat­ic is burned out or damaged.

Return PWE to factory for repair.

6 LCD Display temperature

reading and 0-5 Vdc out­put voltage do correspond
to the correct flow range,
but 4-20 mA output signal
does not change (always
the same or reading
around 4.0 mA).

External loop is open or load
resistance more than 500
Ohm.

Check external connections to pins
M and K of the 12 pin M16 connec­tor. Make sure the loop resistance
is less than 500 Ohm

Temperature output 4-20 mA
schematic is burned out or
damaged.

Return PWE to factory for repair.

7 Fluid flows through the PWE

meter and Paddle Wheel is
turning, but LCD Display
reading and the flow output
voltage 0-5 Vdc signal do
not respond to flow.

The fluid flow rate is below set
Low flow cut-off value.

Check settings for Low flow cut-off
value and make required
adjustment.

Sensor or PC board is
defective.

Return PWE to factory for repair.

8 Fluid flows through the

PWE meter and Paddle
Wheel is turning, but LCD
Display reading and the
flow output voltage 0-5
Vdc signal do not respond
to flow. There is no pulse
output signals from pin C
of the 12 pin M16
connector.

PWE magnetic sensor is
defective

Replace PWE magnetic sensor.

Paddle Wheel magnets are
defective

Replace PWE Paddle Wheel

9 The Temperature reading on

the LCD and analog 0-5 Vdc
or 4-20 mA is not correct
(out of the device measure­ment range: -10 to 70C)

RTD connector got loose and
is not connected to the PCB
board.

Check RTD connector, make sure it
is firmly attached to the header J2
on the PCB.

RTD sensor is defective Replace RTD sensor

10 The PWE Diagnostic Alarm

Event with code
0 – “CPU Temp. High” is
active.

MCU temperature is too high
(overload).

Disconnect power from the PWE.
Make sure the ambient temperature
is within specified range (below 70°
C). Let the device cool down for at
least 15 minutes. Apply power to the
PWE and check Diagnostic Alarm
Event. If overload condition will be
indicated again the unit has to be
returned to the factory for repair.

11 The PWE Diagnostic Alarm

Event with code F - “Fatal
Error” is active.

Fatal Error (EEPROM or SRAM
corrupted)

Cycle the power on the PWE. If
Diagnostic Alarm Event with code F
indicating again the unit has to be
returned to the factory for repair.

73

APPENDIX I

AALBORG7 PWE Flow Meter EEPROM Variables Rev:A002 [10/01/2009]

Note: indexes 0-19 are write protected (manufacture and calibration specific data)

INDEX NAME DATA TYPE

NOTES

0 BlankEEPROM[10]

char[10] Do not modify. Table Revision [PROTECTED]

1

SerialNumber[20]

char[20] Serial Number [PROTECTED]

2

ModelNumber[20]

char[20] Model Number [PROTECTED]

3

SoftwareVer[10]

char[10] Firmware Version [PROTECTED]

4

ManufReservedF1

float Manufacture Specific float data [PROTECTED]

5

ManufReservedF2

float Manufacture Specific float data [PROTECTED]

6 MeterCalFactorM

float

Manufacture Assigned Number of Pulses per Gallon
[PROTECTED]

7

MeterSize

float Size of the meter’s flow tube [mm] [PROTECTED]

8

ReservedText[12]

char[12]

Reserved for Manufacture Specific Text Info
[PROTECTED]

9

ManufReservedF3

float Manufacture Specific float data [PROTECTED]

10

ManufReservedF4

float Manufacture Specific float data [PROTECTED]

11

ManufReservedF5

float Manufacture Specific float data [PROTECTED]

12

ManufReservedF6

float Manufacture Specific float data [PROTECTED]

13

ManufReservedUI1

uint Manufacture Specific uint data [PROTECTED]

14

ManufReservedUI2

uint Manufacture Specific uint data [PROTECTED]

15

ManufReservedUI3

uint Manufacture Specific uint data [PROTECTED]

16

ManufReservedUI4

uint Manufacture Specific uint data [PROTECTED]

17

ManufReservedSI1

int Manufacture Specific int data [PROTECTED]

18

ManufReservedSI2

int Manufacture Specific int data [PROTECTED]

19

ManufReservedSI3

int Manufacture Specific int data [PROTECTED]

20

TimeSinceCalHr

float Time elapsed since last calibration in hours

21

ProtectionCode

uint Program Parameters Protection Code [0-255]

22

BackLight

int Back Light Level [0-4095]**

23

BackLightMode

int Back Light Mode (E-Enable/D-Disable)**

24

LCD_Diagnostic

uint LCD Diagnostic Mode: [0, 1]

25

Address485

char[4]

Two hexadecimal characters address for RS485
only [01-FF]

26

FlowUnits

int Current Units of Measure [0-28]

27

AlarmMode

uint Flow Alarm Mode (0=Disabled, 1=Enabled)

28

LowAlarmPFS

float Low Flow Alarm Setting [%FS] 0-Disabled

29

HiAlarmPFS

float High Flow Alarm Setting [%FS] 0-Disabled

30

AlmDelay

uint Flow Alarm Action Delay [0-3600sec] 0-Disabled

31

RelaySetting

char[4] Relays Assignment Setting**

32

TotalMode

uint Totalizer Mode [1- Enabled, 0 - Disabled]

74

INDEX NAME DATA TYPE NOTES

33

TotalFlowStart float Start Main Totalizer at flow [%FS] 0 - Disabled

34

TotalVolStop float

Main Totalizer Action Limit Volume [%*s]
0- Disabled

35

TotalConfLock uint

Key Pad Totalizer reset access Lock [0 – Disabled, 1
– Enabled]

36

UDUnitKfactor float K-Factor for User Defined Units of Measure

37

UDUnitTimeBase int K-Factor = UDUnit/(L/min)

38

UDUnitDensity uint User Defined Unit Time Base [1, 60, 3600 sec]

39

FoutScaleV float

User Defined Unit Density Flag
[0-not used, 1 - used]

40

FoutOffsetV float Flow Analog 0-5 Vdc Out Scale

41

FoutScalet_mA float Flow Analog 0-5 Vdc Out Offset

42

FoutOffset_mA float

Flow Analog 4-20 mA Out Scale

43

ToutScaleV float Temperature Analog 0-5 Vdc Out Scale**

44

ToutOffsetV float

Temperature Analog 0-5 Vdc Out Offset**

45

ToutScalet_mA float Temperature Analog 4-20 mA Out Scale**

46

ToutOffset_mA float Temperature Analog 4-20 mA Out Offset**

47

FlowMeasureMode uint

0-Pulse width measure, 1 - Number of Pulses per
measure interval

48

OptOut1_Config uint

Optical Output #1 Configuration (function) [0-10]

49

OptOut2_Config uint

Optical Output #2 Configuration (function) [0-10]

50

RTD_LinearMode uint

RTD Linearizer (0-Disabled, 1-Enabled)**

51

AlarmLatch uint

Alarm Latch settings [0-3]

52

PTotalMode uint

Pilot Totalizer mode (0-Disabled, 1-Enabled)

53

Reserved uint

Reserved

54

PTotalFlowStart float

Start Pilot Totalizer at flow [%FS] 0 - Disabled

55

PTotalVolStop float

Pilot Totalizer Action Limit Volume [%*s]
0-Disabled

56

MeterFSRange float

Meter Full Scale range in L/min

57

LowFlowCutOff float

Low Flow cut off. Must be between 0 and 10.0
%F.S.

58

Damping uint Flow Reading Damping 1-99 seconds

59

Density float Fluid Density g/cm3 [0.01 - 5.00000 g/cm3]

60

PulseMeasInt uint Flow Pulse Measure Interval in mS [500-60000]

61

MeterCalFactor uint Calibration Factor:Number of Pulses per Gallon

62

FlowTbl[0].FlowPFS float Flow Linearizer Index 0 PFS (must be 0.0)

63

FlowTbl[0].LinCounts uint Flow Linearizer Index 0 Counts (must be 0)

64

FlowTbl[1].FlowPFS float Flow Linearizer Index 1 PFS [0.0 – 1.0]

65

FlowTbl[1].LinCounts uint Flow Linearizer Index 1 Counts

66

FlowTbl[2].FlowPFS float Flow Linearizer Index 2 PFS [0.0 – 1.0]

67

FlowTbl[2].LinCounts

uint

Flow Linearizer Index 2 Counts

75

INDEX NAME DATA TYPE NOTES

68

FlowTbl[3].FlowPFS float Flow Linearizer Index 3 PFS [0.0 – 1.0]

69 FlowTbl[3].LinCounts uint Flow Linearizer Index 3 Counts

70

FlowTbl[4].FlowPFS float Flow Linearizer Index 4 PFS [0.0 – 1.0]

71

FlowTbl[4].LinCounts uint Flow Linearizer Index 4 Counts

72

FlowTbl[5].FlowPFS float Flow Linearizer Index 5 PFS [0.0 – 1.0]

73

FlowTbl[5].LinCounts uint Flow Linearizer Index 5 Counts

74

FlowTbl[6].FlowPFS float Flow Linearizer Index 6 PFS [0.0 – 1.0]

75

FlowTbl[6].LinCounts uint Flow Linearizer Index 6 Counts

76

FlowTbl[7].FlowPFS float Flow Linearizer Index 7 PFS [0.0 – 1.0]

77

FlowTbl[7].LinCounts uint Flow Linearizer Index 7 Counts

78

FlowTbl[8].FlowPFS float Flow Linearizer Index 8 PFS [0.0 – 1.0]

79

FlowTbl[8].LinCounts uint Flow Linearizer Index 8 Counts

80

FlowTbl[9].FlowPFS float Flow Linearizer Index 9 PFS [0.0 – 1.0]

81

FlowTbl[9].LinCounts uint Flow Linearizer Index 9 Counts

82

FlowTbl[10].FlowPFS float Flow Linearizer Index 10 PFS [0.0 – 1.0]

83

FlowTbl[10].LinCounts uint Flow Linearizer Index 10 Counts

84

T_InScale float Temperature RTD input Scale**

85

T_InOffset float Temperature RTD input Offset**

86

T_Mode float Reserved**

87

DiagEventMask

uint

Mask for Diagnostic Events: Clear bit-> mask corre
sponding event. Default mask is 0xFFFFh

88

FlowLinearizer uint Flow Linearizer (0-Disabled, 1-Enabled)

89

T_AlarmMode uint Temp. Alarm Mode (0=Disabled, 1=Enabled)**

90

T_AlarmDelay uint Delay in seconds 0-3600 for Tem.Alarm action**

91

T_AlarmLatch uint Temp Alarm Latch 0-3**

92

T_LowAlarm_C float Low Temperature Alarm in %FS [-.1-1]**

93

T_HiAlarm_C float High Temperature Alarm in %FS [-.1-1]**

94

ReservedF3 float Reserved

95

FluidName[20] char[20] Name of the Liquid used for Calibration

96

CalibratedBy[20] char[20] Name of person, meter was calibrated by

97

CalibratedAt[20] char[20] Name of the Calibration Lab

98

DateCalibrated[12] char[12] Calibration date

99 DateCalibrationDue[12] char[12] Date calibration due

100 UserTagName char[20] User Defined Device Tag Name or Number

101 EEMagicNumber uint Number used to verify EEPROM integrity

** Not supported in some hardware configurations

76

APPENDIX II

Component Diagram Top Side

Component Diagram Bottom Side

77

APPENDIX III

Dimensional Drawing

WARRANTY

Aalborg7 Flow Systems are warranted against parts and workmanship for
a period of one year from the date of purchase. Calibrations are warranted
for up to six months after date of purchase, provided calibration seals have
not been tampered with. It is assumed that equipment selected by the cus­tomer is constructed of materials compatible with gases used. Proper
selection is the responsibility of the customer. It is understood that gases
under pressure present inherent hazards to the user and to equipment, and
it is deemed the responsibility of the customer that only operators with
basic knowledge of the equipment and its limitations are permitted to con­trol and operate the equipment covered by this warranty. Anything to the
contrary will automatically void the liability of Aalborg7 and the provisions
of this warranty. Defective products will be repaired or replaced solely at
the discretion of Aalborg7 at no charge. Shipping charges are borne by the
customer. This warranty is void if the equipment is damaged by accident
or misuse, or has been repaired or modified by anyone other than Aalborg7
or factory authorized service facility. This warranty defines the obligation of
Aalborg7 and no other warranties expressed or implied are recognized.

TRADEMARKS

Aalborg7 is a registered trademark of Aalborg Instruments.
Buna7 is a registered trademark of DuPont Dow Elastometers.
Kalrez7 is a registered trademark of DuPont Dow Elastomers.

VCR7 is a registered trademark of Swaglok Marketing Co.
Viton7 is a registered trademark of Dupont Dow Elastometers L.L.C.

APPENDIX IV

 CAUTION:

This product is not intended to be used in life support applications!

78