www.greyline.com
USER'S GUIDE
Installation & Operation
Instructions
Differential Level Transmitter
Model DLT 2.0
Manual Series A.1.3
Note: This page has been left blank intentionally.
DLT 2.0 Differential Level Transmitter
INDEX
CONNECTIONS: ............................................................................................... 4
KEYPAD SYSTEM ............................................................................................ 6
CALIBRATION MENU ..................................................................................... 7
ICONS ................................................................................................................. 8
MAIN DISPLAY ................................................................................................ 9
MESSAGE ICON ............................................................................................... 9
STATUS ............................................................................................................. 9
PASSWORD ..................................................................................................... 10
UNITS/MODE .................................................................................................. 11
CALIBRATION................................................................................................ 12
CHANNEL SETUP .......................................................................................... 16
RELAY PARAMETERS .................................................................................. 17
SPECIAL FUNCTIONS ................................................................................... 18
SENSOR MOUNTING/LOCATION ............................................................... 20
APPLICATIONS HOTLINE ............................................................................ 26
PRODUCT RETURN PROCEDURE .............................................................. 27
APPENDIX A - OPTIONS ............................................................................... 29
DATA LOGGING (Optional) ........................................................................... 35
CONVERSION GUIDE ................................................................................... 37
SPECIFICATIONS ........................................................................................... 38
IMPORTANT NOTE: This instrument is manufactured and calibrated to meet product specifications.
Please read this manual carefully before installation and operation. Any unauthorized repairs or
modifications may result in a suspension of the warranty.
Available in Adobe Acrobat pdf format
Page 3
DLT 2.0 Differential Level Transmitter
CONNECTIONS:
POWER INPUT: 100 to 240 VAC 50/60Hz . No adjustments are necessary for voltages within this
range.
Optional DC: 9-32 VDC, 9 Watts. Connect to + and - terminals.
Optional Thermostat and Heater modules are available rated for 115 VAC or 230 VAC.
IMPORTANT NOTE: To comply with CSA/UL electrical safety standards, AC power input and relay
connection wires must have conduit entry to the instrument enclosure. Installation requires a switch,
overcurrent fuse or circuit breaker in the building (in close proximity to the equipment) that is marked
as the disconnect switch.
Risk of electric shock. Loosen cover screw to access connections. Only qualified personnel
!
should access connections.
Note: Use of instrumentation over 40°C ambient requires special field wiring.
Note: User replaceable fuse 2 Amp 250V (T2AL250V).
Page 4
CONNECTIONS
DLT 2.0 Differential Level Transmitter
Sens
Sens
A
B
4-20
Diff
RLY2
RLY1
–
+
NO
C
NC
NO
C
NC
DATA LOGGER OPTION
EXTRA RELAYS OPTION
NC
RLY3
NC
C
NO
C
NO
RLY4
AC
POWER
INPUT
LN
HEATER OPTION
AC
GND
USB HARNESS
CONNECTOR
4-20
Sens
NC
RLY5
+ -
C
A
NO
+ -
4-20
B
Sens
NC
C
RLY6
NO
GND
CORE
WHT
SHLD
GRN
CORE
WHT
SHLD
GRN
Page 5
DLT 2.0 Differential Level Transmitter
KEYPAD SYSTEM
The DLT 2.0 uses a menu system. Arrows show the four directions to leave a menu box. Press a key to
move to the next item in the direction shown. Move the cursor (underline) under numerals and increase
or decrease numerals with the and keys.
To store calibration values permanently (even through power interruptions), press .
Page 6
CALIBRATION MENU
DLT 2.0 Differential Level Transmitter
Mode} Flow
Linear ft
Volume USG
Time min
Temperature C
--Units/Mode--------
Display Alt
--Calibration-------
Min Range 1.000ft
} Sensor B
Max Range 12.000ft
Slope Offst 0.000ft
Damping 10%
LOE Time 30sec
Size 22.5°
Type V-notch}
-- ----Channel Setup--
OAlternate N
FlowFunction
8000 USG/mOff
10000 USG/mOn
Sensor B
Mode Pump
Relay 1}
--Relay Parameters--
LOE mode Off
SetupChannel
Calibration
Relay Parameters
Units / Mode}
--Menu Selections----
Password 0000
--Password----------
Log Site ID 0}
--Data Logging-------
Data Logging
Special Functions
Simulation
Log Logging
Mode Flow
Set Date Sep 22/2009
Set Time 14:24:40
Interval 30sec
Configuration
Language English
Analog Out 4-20mA
Backlight High
Reset Totalizer NO
Restore Defaults NO
--Special Functions-
}
New Password 0000
--Simulation--------
ALevel 12.000ft
Flow B 0.00USG/m
}Test Actual
Level A4-20mA 19.99
Difference 0.00ft
4-20mA Flow B 4.00
4-20mA Diff 20.00
Relays 1 2 3 4 5 6
6Relays
24Logger 1. T
Utility 1.25.05
Sonar 1.14
--Configuration-----
Analog 3Out
}
USG/min
0.000
Data log Logging
Log Used 0%
Sensor A Good
Sensor B Good
Temperature A 22C
--Message-----------
Temperature B 22C
--24 hr log-------- -B
--24 hr log-------- -A
Tot 20130.8 USG
11:08:00Max Time
50138 USGTotal
52.20 USG/mMaximum
34.82 USG/mAverage
Date Feb. 12/20} 10
4.82 ftAverage
8.20 ftMaximum
0.000 ftMinimum
11:08:00Max Time
Date Feb. 12/20} 10
Relays 1 2 3 4 5 6
9:15:00Min Time
0.000 USG/mMinimum
9:15:00Min Time
.00ft} Level A 12
20130.8USGTot
Level B 11.30ft
Difference 0.70ft
EC 100%A
EC B 100%
--Status------------
Relays 1 2 3 4 5 6
OPTIONAL FEATURES
Page 7
ICONS
DLT 2.0 Differential Level Transmitter
A
1. 2.
1.
1.
2.
2. 3.
A
1.
2.
A
4.
3.
Message waiting. Press .Ç
Data logging .off
Data logging .on
USB file download.
File download completed.
Download Error.
A sensor reading displayed. Echo OK.
B
D
1.
1.
B
D
2.
2.
B
D
3.
3.
Page 8
B sensor reading displayed. Echo OK.
Difference reading displayed. Echo OK.
No Echo .
DLT 2.0 Differential Level Transmitter
USG/min
0.000
Tot 20130.8 USG
Relays 1 2 3 4 5 6
--Message----------Data log Stopped
Log Used 0%
Sensor A Good
Sensor B Good
Temperature A 21C
Temperature B 21C
--Status------------
.00ft} Level A 12
Level B 11.30ft
Difference 0.70ft
20130.8USGTot
EC 100%A
EC B 100%
Relays 1 2 3 4 5 6
--24 hr log-------- -B
Date Feb. 12/20} 10
50138 USGTotal
34.82 USG/mAverage
52.20 USG/mMaximum
11:08:00Max Time
0.000 USG/mMinimum
9:15:00Min Time
MAIN DISP LAY
NOTE
Sensor A reads
Sensor B reads
The display is configured from “
Range, Level or Volume
Range, Level, Volume HRT and Flow
Units/Mode” menu to display the Sensor
A measurement, Sensor B measurement or Level Difference. The DLT 2.0 will
start-up with this display.
The display also shows Units Selected, Totalizer and Relay States.
MESSAGE ICON
Press from the MAIN display to view status of the data logger and
error/warning messages provided by the instrument. The Message Icon will
appear on the MAIN display if error messages are being generated by the
instrument. Press to return to the main display.
STATUS
Press from the MAIN display to view instrument status.
Level for both
sensors is displayed.
Tot Displays the current totalizer reading.
EC Displays echo confidence.
Relays Energized relays will display as a white character on a black
background.
24 HR LOG (Data Logging option only)
Press from the MAIN display to view a formatted flow report from instruments
with a built-in data logger. Press to scroll down one day or repeatedly to scroll
to a specific date. Press to toggle between Sensor A and Sensor B formatted
reports. Up to 365 days can be stored. Newest date will overwrite the oldest. Press
to return to the main display.
Page 9
DLT 2.0 Differential Level Transmitter
--Password----------
Password 0000
PASSWORD
The password (a number from
0000 to 9999) prevents unauthorized access to
the Calibration menu.
From the MAIN display press to get to
password is
Menu Selections screen.
0000 and if it has not been changed press to proceed to the
If a password is required, press to place the cursor under the first digit and or
to set the number, then to the second digit, etc. Press or to proceed to
the
Menu Selections screen.
A new password can be stored by going to
Password
.
Password. Factory default
Special Functions/New
Page 10
DLT 2.0 Differential Level Transmitter
--Units/Mode-------Mode Flow
}
Linear ft
Volume USG
Time min
Temperature C
Display B
--Units/Mode--------
Mode Flow
Linear} in
--Units/Mode--------
}Volume USG
ft3
bbl
IMG
USMG
--Units/Mode--------
Mode Flow
Linear in
Volume USG
Time min
Temperature} C
ft
mm
m3
IG
UNITS/MODE
From
Flow, HRT or Volume.
Mode press the and then the or to select Level, Range,
Range displays distance from the sensors to the target or liquid surface like a
tape measure. Range mode is useful to measure the exact distance
from the sensors to the zero level during calibration.
Level used to measure tank levels and level difference in linear units, or
"Head" in an open channel for comparison with flow tables.
m
Volume displays inventory of the two tanks in engineering units.
HRT select Horizontal Round Tank mode to calculate and display volume
units in horizontal round tanks.
Flow calculates channel flow through a flume or weir (sensor B only).
Sensor A measures level.
L
Volume, HRT or Flow gives the additional choice of volumetric units:
ft3 - cubic feet
USG - US gallons
USMG - US million gallons (FLOW only)
IG - Imperial gallons
IMG - Imperial million gallons (FLOW only)
m3 - cubic meters
F
L - liters
bbl - U.S. oil barrel
Press to store the selection, then to the next menu item and to enter.
Linear press and then or to select units of measurement.
Press to store the selection.
Time press and then or to select day, hr, min or
sec.
Temperature press then to select C or F (Centigrade or
Fahrenheit)
Press or to return to the Menu Selections screen.
Page 11
DLT 2.0 Differential Level Transmitter
--Calibration------Sensor B
}
Min Range 1.000ft
Max Range 12.000ft
Slope Offst 0.000ft
Damping 10%
LOE Time 30sec
CALIBRATION
Press to
Calibration and to enter. Use or to position
before each menu item and to enter. When settings are completed press to
store and return to the
Calibration menu.
Note - Sensors A & B do not
need to be installed at the same height.
Sensor
Select either Sensor A or Sensor B for calibration.
Min Range distance from the sensor face to highest expected level.
Max Range distance from the sensor face to channel floor.
MaxVol (Used for double tank monitoring applications, Volume and
HRT mode only. Enter the maximum volume of the vertical or
horizontal tank.
Note - to measure differential level the two sensors need a common reference
assumed to be a level channel floor.
SENSOR ‘A’
SENSOR ‘B’
MIN
RANGE
MAX
RANGE
BARSCREEN
SLOPE
OFFSET
MIN
RANGE
MAX
RANGE
Slope Offst
Appears when calibrating Sensor B. Enter a slope offset value
to compensate for a sloped channel floor. Offset will be a
positive value when Sensor B channel floor is lower than Sensor
A channel floor.
Damping Minimum damping allows fast response to level changes.
Increasing damping slows the DLT 2.0's response to level
changes and is ideal to smooth the display and outputs in
turbulent conditions. Damping value is shown in percent (099%). Some experimentation may be required to select the
optimum damping value. A value of 1% is recommended for
most applications and for fast level changes (up to ½ inch/sec 13 mm/sec).
Page 12
LOE Time - Appears when calibrating Sensor B. Press and or to
change the number of seconds without receiving an echo before
the DLT 2.0 displays ECHO LOSS, and Control relays change
state as calibrated under Relay Parameters.
Factory default is 30 seconds and is recommended for most applications,
Minimum is 1 second and maximum is 99 seconds.
Press from the
Units/Mode display to return to Menu Selections.
DLT 2.0 Differential Level Transmitter
Page 13
DLT 2.0 Differential Level Transmitter
TANKINVENTORY
LEVEL MODE
SENSOR
MAX RANGE
100%
MIN RANGE
0%
TAN KINVENTORY
RANGE MODE
SENSOR
MAX RANGE
100%
0%
MIN RANGE
TAN KINVENTORY
HORIZONTAL ROUND TANK(HRT)MODE
MIN RANGE
MAX
VOLUME
MAX RANGE
MAX LEVEL
MAX
VOLUME
ZERO LEVEL
MAX LEVEL
ZERO LEVEL
CALIBRATION
- for Level/Inventory Applications
1. Before starting the calibration determine:
a) MAX RANGE = ________________
(Maximum range = distance from Sensor to Zero level)
b) MAX LEVEL = ________________
(Maximum level of product being measured)
c) MIN RANGE = ________________
(Distance from sensor to Max Level)
Minimum range = MAX RANGE - MAX LEVEL
(must be at least 8" / 203 mm depending on sensor model)
2. Check the maximum range with the sensor installed:
a) When liquid is at zero level press to view the Range reading in the
Status menu. Use this range measured by the DLT 2.0 as the
Range
or
setting.
Max
b) Carefully measure distance from sensor to zero level with a tape measure,
and use this measurement as the
Max Range setting.
MINIMUM RANGE:
In the
CALIBRATION menu:
- Press to get to
Min Range
- Press to move the cursor under the digits
- Use or to set th e minimum range
Note:
Min Range must be at least 12" (30.5 cm) for PZ32T sensors, 16"
(40.6 cm) for PZ52T and PZ34 sensors and 8" for PZ15 sensors. For correct tank
volume calculation in
Hrt mode Min Range must be the actual distance
from the end of the sensor to the top of the tank.
MAXIMUM R A NGE:
Press to get to
Enter
Max Range determined above.
Max Range
Page 14
DLT 2.0 Differential Level Transmitter
PAL MER BOWLUS
MAX LEVEL
V-NOTCH
ZERO LEVEL
SENSOR
SENSOR
MIN
RANGE
MAX LEVEL
MAX
RANGE
ZERO LEVEL
MIN
RANGE
MAX
RANGE
CALIBRATION
- for Open Channel Flow
1. Before starting the calibration determine:
a) MAX RANGE = ____________________
(Maximum range = distance from the Sensor to Zero flow point)
b) MAX LEVEL = ____________________
(Maximum level of flow through flume or weir)
c) MIN RANGE = __________________
(Distance from sensor to Max Level)
Minimum range = MAX RANGE - MAX LEVEL
(must be at least 8" / 20.3 cm depending on sensor model).
2. Check the maximum range with the sensor installed by:
a) When liquid is at zero level press to view the
Status menu. Use this range measured by the DLT 2.0 as the Max
Range
setting.
Range reading in the
or
b) Carefully measure distance from sensor to zero level with a tape measure,
and use this measurement as the
Max Range setting.
NOTE
: The DLT 2.0 will not detect targets beyond user entered Max Range.
Page 15
CHANNEL SETUP
DLT 2.0 Differential Level Transmitter
--Channel Setup-----Type V-notch
}
Rect Weir w/EC
Trapezoidal
Leopld-Lagco
Palmer Bowlus
--Channel Setup-----Type V-notch
}
Size 22.5
--Channel Setup-----Type RECT Weir w/EC
}
Height 0.000ft
--Channel Setup-----Type Leopld-Lagco
}
Size 36in
Custom
Khafagi
Rect Weir
Parshall
120
90
60
45
30
--Channel Setup-----Type Custom
°
°
°
°
°
°
}
K 0.0000
n 0.0000
--Channel Setup-----Type Khafagi
}
Height 0.000ft
--Channel Setup---Type RECT Weir
}
Height 0.000ft
--Channel Setup-----Type Trapezoidal
}
Size Extra large 60
Large 60
Small 60
12in 45 SRCRC
°
2in 45 WSC
°
8in 60
°
°
°
°
30in
24in
18in
12in
10in
8in
6in
--Channel Setup-----Type Palmer Bowlus
}
Size 48in
42in
36in
30in
27in
24in
21in
18in
15in
12in
10in
8in
6in
4in
--Channel Setup-----Type Parshall
}
Size 12ft
10ft
8ft
6ft
5ft
4ft
3ft
2ft
18in
12in
9in
6in
3in
2in
1in
Page 16
DLT 2.0 Differential Level Transmitter
--Relay Parameters-Relay 1
}
Sensor Diff
Function Flow
Mode Pump
On 10000 USG/m
Off 8000 USG/m
LOE mode Off
--Relay Parameters-Relay 1
}
Function Temperature
On 0.0C
Off 9.0C
--Relay Parameters-Relay 1
Function Pulse
On 10.000ft}³
--Relay Parameters-Relay 1
}
Function Level
Mode Pump
On 12.000ft
Off 3.000ft
LOE mode Off
Alternate NO
RELAY PARAMETERS
Relay Press and or to select a relay (2 relays are standard, 4
additional are optional).
Sensor Press and or to select Sensor A, Sensor B or
Level Difference.
Function Press or to select Off, Temperature, Pulse
and
Level.
Temperature Air temperature at the sensor location. Press and to set
the relay On and Off for specific temperatures.
Pulse Press and set digits to the flow volume increment required
between relay pulses. Use this feature for remote samplers,
chlorinators or totalizers. Minimum time between pulses is
2.25 seconds and pulse duration is 350 milliseconds.
Level Appears in Level, Range, Volume or HRT
modes only. Press to
R Function and to select
Pump, LoAlm (low alarm) or HiAlm (high alarm).
Press to return to
Menu Selections.
LOE Set relay state for ‘echo loss’ event (On, Off or Hold)
Alternate Pumps can be set to alternate when in pump mode.
DATA LOGGING (OPTIONAL)
Refer to Options section of this manual.
Page 17
DLT 2.0 Differential Level Transmitter
--Special FunctionsLanguage English
}
Analog Out 4-20mA
Backlight High
Reset Totalizer NO
Restore Defaults NO
New Password 0000
--Special Functions-
Language English
}Backlight High
Medium
Key Hi/Lo
Low
Key High
Key Med
Key Low
Off
SPECIAL FUNCTIONS
Language Select English, French or Spanish
and press .
Analog Out Select 4-20mA or 0-5V mode for the analog
output.
Backlight Select High, Medium or Low for continuous
backlight.
Select
minute) after a keypress and then
until a key is pressed again.
Select
after a keypress and then backlight off until a key is
pressed again.
Reset Totalizer Press and select Yes to erase and restart the
totalizer at zero.
Restore Defaults Select Yes and press to erase all user settings
and return the instrument to factory default settings
New Password Select any number from 0000 to 9999 and
press . Default setting of
access to the calibration menus. Setting of any
password greater than
password to be entered to access the calibration
menus.
Press to return to
Menu Selections.
Key Hi/Lo for high backlight (for 1
Lo backlight
Key High, Med or Low for backlight
0000 will allow direct
0000 will require the
Page 18
DLT 2.0 Differential Level Transmitter
--Simulation-------Test Actual
}
Level A 116.74in
Level B 62.11in
Difference 54.63in
4-20mA Level A 18.15
4-20mA Level B 11.53
4-20mA Diff 10.62
Relays 1 2 3 4 5 6
SIMULATION
Exercises the 4-20mA (0-5V) outputs, digital display and control relays.
Test Select Maximum and press to simulate maximum Flow, Range or
Level and to output 20mA (5V) for each analog channel.
Select
Minimum and press to simulate minimum Flow, Ranges or
Levels and to output 4mA (0V) for each analog channel.
To simulate measurements between minimum and maximum set
Test to Actual and then enter values for the A and B
measurement. The differential calculation, analog outputs and control
relays will respond to the simulated values.
Page 19
DLT 2.0 Differential Level Transmitter
SENSOR MOUNTING/LOCATION
- Tank Level/Inventory Applications
Each DLT 2.0 Level Transmitter includes two noncontacting ultrasonic sensors. The sensors must be
installed in a position to obtain unobstructed echoes
from the liquid or material being measured.
Mount the sensor away from pipes, ladders, or
structural members which might cause continuous false
echoes.
BAD GOOD
90°
Page 20
SENSOR MOUNTING LOCATION
- Tank Level/Inventory Applications
1 FT (30 cm)HORIZONTAL
FROM SIDEWALL FOR
EVERY10'(3m)VERTICAL
NOTE:2FT (60 cm) FOR
EVERY10'(3m) DEPTH ON
APPLICATIONS WITH ROUGH
SIDEWALLS, LADDERS,
REINFORCING RINGS ETC.
PREFERRED SENSOR
SENSOR FACE MUST
BE HORIZONTAL ±1°
DLT 2.0 Differential Level Transmitter
LOCATION
6" SCHEDULE 40
STAND PIPE IF
EXTENSION
REQUIRED
MAX. LIQUIDLEVEL
SENSOR MOUNTING
Each sensor is equipped with a ¾ inch "isolation coupling" which MUST be used in your installation. A
threaded nipple or length of conduit may be used to position the sensor at the desired height.
The sensor should be hand-tightened (like a light bulb) by turning the sensor stem only. DO NOT use a
wrench and do not over tighten. DO NOT clamp the sensor below the isolation coupling.
Page 21
DLT 2.0 Differential Level Transmitter
TYPICAL SENSOR POSITIONING
FOR FLUMES AND WEIRS
Always refer to the flume or weir manufacturer’s instructions for correct measurement point upstream
from the flume or weir. Location of the sensor is critical for accurate flow measurement.
If manufacturer’s instructions are not available, the following guidelines are generally accepted.
1. PARSHALL FLUME:
Position the sensor at 2/3 Approach as
illustrated above. Sensor height must be
8" (203 mm) or more above the highest
water level.
2. PALMER BOWLUS FLUMES:
Position the sensor at ½ the flume
Diameter upstream from the throat of
the flume. Sensor height must be 8" (203
mm) or more above the highest water
D
level.
3. V-NOTCH WEIRS
3x MAX.HEAD
Position the sensor at 3 x maximum Head
upstream from the weir plate. Sensor height must
be 8" (20.3 cm) or more above the highest water
level.
SENSOR
POSITION
FLOW
WEIR
PLATE
STILLING WELLS
Stilling wells are recommended to reduce the effects of turbulence as water flows through the flume or weir. The
DLT 2.0 sensor is centered over the stilling well. Sensor height must be 8" (203 mm) or more above the highest
water level. The well must be kept clean of sediment and deposits on the side walls.
Page 22
DLT 2.0 Differential Level Transmitter
ENCLOSURE INSTALLATION
Locate the enclosure within 20 ft (6 m) of the sensor (500 ft -150 m optional). The enclosure can be wall
mounted with the four mounting screws (included) or panel mounted with Option PM Panel Mount kit
from Greyline Instruments.
Avoid mounting the enclosure in direct sunlight to protect the electronics from damage due to
overheating and condensate. In high humidity atmospheres, or where temperatures fall below freezing,
Option TH Enclosure Heater and Thermostat is recommended. Seal conduit entries to prevent moisture
from entering enclosure.
NEMA4X (IP66) WITH CLEAR COVER
1. Open hinged enclosure cover.
COVER
2. Insert #8 screws (supplied) through the four enclosure mounting holes
to secure the enclosure to the wall or mounting stand.
Additional conduit holes can be cut in the bottom of the enclosure when
ENCLOSURE
MOUNTING
HOLES
required. Use a hole saw or Greenlee-type hole cutter to cut the required
holes.
DO NOT make conduit/wiring entries into the top of the enclosure.
ENCLOSURE
END VIEW
Note: This non-metallic enclosure does not automatically provide
grounding between conduit connections. Grounding must be provided as part of the installation. Ground
in accordance with the requirements of the National Electrical Code. System grounding is provided by
connecting grounding wires from all conduit entries to the steel mounting plate or another point which
provides continuity.
CLEANING
Cleaning is not required as a part of normal maintenance.
Page 23
DLT 2.0 Differential Level Transmitter
PZxx Series Sensors
Troubleshooting
Resistance measured (between the shield and center wire) across the coaxial cable ends by mulitmeter
indicates ambient temperature.
Resistance vs. Temperature
Page 24
FUSE REPLACEMENT
1. Turn OFF power.
2. Loosen cover screw and open.
3. Remove power module.
4. Locate fuse on Power Board.
5. Replace fuse with 2 AMP/ 250V, 5 x 20mm fuse.
6. Reinstall power module into chassis.
DLT 2.0 Differential Level Transmitter
Fuse
POWER MODULE
Page 25
DLT 2.0 Differential Level Transmitter
APPLICATIONS HOTLINE
For applications assistance, advice or information on any Greyline Instrument contact your Sales
Representative, write to Greyline or phone the Applications Hotline below:
United States: Tel: 315-788-9500 Fax: 315-764-0419
Canada: Tel: 613-938-8956 Fax: 613-938-4857
Toll Free: 888-473-9546
Email: info@greyline.com
Web Site: www.greyline.com
Greyline Instruments Inc.
Canada USA:
16456 Sixsmith Drive 105 Water Street
Long Sault, Ont. K0C 1P0 Massena, NY 13662
Page 26
DLT 2.0 Differential Level Transmitter
PRODUCT RETURN PROCEDURE
Instruments may be returned to Greyline for service or warranty repair.
1) Obtain an RMA Number from Greyline -
Before shipping a product to the factory please contact Greyline by telephone, fax or email to obtain an
RMA number (Returned Merchandise Authorization). This ensures fast service and correct billing or
credit.
When you contact Greyline please have the following information available:
1. Model number / Software Version
2. Serial number
3. Date of Purchase
4. Reason for return (description of fault or modification required)
5. Your name, company name, address and phone number
2) Clean the Sensor/Product -
Important: unclean products will not be serviced and will be returned to the sender at their expense.
1. Rinse sensor and cable to remove debris.
2. If the sensor has been exposed to sewage, immerse both sensor and cable in a solution of 1 part
household bleach (Javex, Clorox etc.) to 20 parts water for 5 minutes. Important: do not immerse open
end of sensor cable.
3. Dry with paper towels and pack sensor and cable in a sealed plastic bag.
4. Wipe the outside of the enclosure to remove dirt or deposits.
5. Return to Greyline for service.
3) Ship to Greyline -
After obtaining an RMA number please ship the product to the appropriate address below:
Canadian and International USA
Customers: Customers:
Greyline Instruments Inc. Greyline Instruments Inc.
16456 Sixsmith Drive 204 150th Avenue
Long Sault, Ont. K0C 1P0 Madeira Beach, FL 33708
RMA# RMA#
Page 27
LIMITED WARRANTY
_____________________________________
Greyline Instruments warrants, to the original purchaser, its
products to be free from defects in material and workmanship for a
period of one year from date of invoice. Greyline will replace or
repair, free of charge, any Greyline product if it has been proven to
be defective within the warranty period. This warranty does not
cover any expenses incurred in the removal and re-installation of
the product.
DLT 2.0 Differential Level Transmitter
If a product manufactured by Greyline should prove defective
within the first year, return it freight prepaid to Greyline
Instruments along with a copy of your invoice.
This warranty does not cover damages due to improper installation
or handling, acts of nature, or unauthorized service. Modifications
to or tampering with any part shall void this warranty. This
warranty does not cover any equipment used in connection with the
product or consequential damages due to a defect in the product.
All implied warranties are limited to the duration of this warranty.
This is the complete warranty by Greyline and no other warranty is
valid against Greyline. Some states do not allow limitations on how
long an implied warranty lasts or limitation of incidental or
consequential damages, so the above limitations or exclusions may
not apply to you.
This warranty gives you specific legal rights, and you may also
have other rights which vary from state to state.
Greyline Instruments Inc.
Page 28
DLT 2.0 Differential Level Transmitter
APPENDIX A - OPTIONS
EXTRA SENSOR CABLE - OPTION XC
Each Greyline level instrument includes 25 ft. (7.6 m) RG62AU coaxial cable. Additional RG62AU
coaxial cable and Cable Junction Box (Option JB4X) may be installed to extend cable up to 500 ft
(152m) as required during installation. No adjustment is required when the sensor cable is extended or
shortened. Use only RG62AU (or RG62U) coaxial cable which is available from Greyline Instruments
or your local distributor. Nominal impedance of RG62AU cable is 93 ohms.
Extended sensor cable maybe installed in metal or plastic conduit. Recommended installation with a
junction box is illustrated below:
Dual Sonar DLT
TO ULTRASONIC
LEVEL SENSOR
RG62AU COAXIAL
TO ULTRASONIC
LEVEL SENSOR
RG62AU COAXIAL
GND
CORE
SHIELD
CORE
SHIELD
GND
CORE
SHIELD
CORE
SHIELD
GND
GND
EXTENDED SENSOR CABLE TO
ELECTRONICS ENCLOSURE
- MAX. TOTALCABLE LENGTH
500 ft (152m) RG62AU coaxial
- CONDUIT RECOMMENDED FOR
MECHANICAL PROTECTION
EXTENDED SENSOR CABLE TO
ELECTRONICS ENCLOSURE
- MAX. TOTALCABLE LENGTH
500 ft (152m) RG62AU coaxial
- CONDUIT RECOMMENDED FOR
MECHANICAL PROTECTION
JUNCTION BOX - OPTION JB4X
NEMA4X (IP66) polycarbonate Junction Box with terminal strips is available from Greyline
Instruments. Includes compression fittings for watertight coaxial cable entries.
120mm / 4.72”
3.9 mm
0.15"
MOUNTING
HOLES (X4)
DIMENSIONS
TOP VIEW
”
END VIEW
90 mm / 3.54"
60mm / 2.36
Page 29
DLT 2.0 Differential Level Transmitter
EXTENDED SENSOR CABLE INSTALLATION IN MANHOLE
MANHOLE COVER
JBX
ULTRASONIC
SENSOR
XC EXTENDED
SENSOR CABLE
UP TO 500 ft 152 m
CONDUIT TO
ELECTRONICS
Wetwell, Sump or Pump Station
Page 30
DLT 2.0 Differential Level Transmitter
SENSOR INTRINSIC SAFETY
(OPTION ISB)
When connected through Intrinsic Safety Barriers, Greyline PZ** Series sensors are certified for
installation in a hazardous location rated:
Class I, Groups C,D
Class II, Groups E,F,G
Class III
The Intrinsic Safety Barrier may be ordered with the Greyline instrument and is supplied mounted in the
Greyline instrument enclosure. Replacement barrier fuses (Part No. ISB- 011239) may be purchased
separately. The instrument enclosure containing the ISB Intrinsic Safety Barrier must be installed in a
non-hazardous location.
Page 31
GN3SPEC-ISB-04
The intrinsic safety barrier
assemblies installed in the
DLT 2.0 limit the voltage and
current supplied to the
transducers to the values
listed under ‘Barrier
Specifications’. To safely
install Greyline transducers
certified for use in hazardous
locations you must refer to
the installation
drawings/specifications of
the certified transducers.
DLT 2.0 Differential Level Transmitter
2
2
1
1
)
)
, 27 ohms
, 27 ohms
V
V
BARRIER SPECIFICATIONS
STAHL BARRIER
System Parameters
DLT 2.0
Installed in
Non-Hazardous Location
STAHL 9001/02-093-390-101
3
TRANSDUCER
GND
TRANSDUCER
CONNECTIONS
Entity Parameters
(rated 9.6
(rated 9.6
STAHL 9001/02-093-390-101
4
4
3
9001/02-093-390-101
9.6V, 27 ohms
m
U
250V
Page 32
V
0C
9.3V
I
SC
390mA
P
0
906.8mW
C
a
4.1µF
L
a
0.16mH
DLT 2.0 Differential Level Transmitter
ENCLOSURE HEATER AND THERMOSTAT - Option TH
Instruments can be factory-equipped with an Enclosure Heater and Thermostat or the module can be
customer-installed. The Thermostat is factory set to turn ON at 40°F (4.5°C) and OFF at 60°F (15.5°C).
Power consumption is 15 Watts.
TO AC POWER SUPPLY
ENCLOSURE SUNSCREEN - Option SCR
Do not mount instrument electronics in direct sunlight. Overheating will reduce the life of electronic
components and condensate may form during the heat/cool cycles and cause electrical shorts.
11" / 280 mm
Note:
Exposure to direct sunlight can cause
overheating and moisture condensation
which will reduce the operating life of
electronics.
Protect Instruments from direct sunlight
with this iridite finished aluminum sun
screen (Greyline Option SCR).
Seal conduit entries with caulking
compound to further reduce moisture
condensation.
11"
280 mm
5"
127mm
Page 33
DLT 2.0 Differential Level Transmitter
POWER INPUT OPTION
9-32VDC
DLT 2.0 Differential Level Transmitters may be ordered factory-configured for 9-32VDC power input.
QUICK BENCH TEST:
Connect Sensor as shown below, then Power. When properly connected figures will show on the large
LCD display. Test operation of the DLT 2.0 by holding the sensor steadily and aiming at a flat, stable
target 12 to 28" (305 to 711 mm) away from the end of the sensor. Allow a few seconds for the DLT 2.0
to lock onto the target before displaying its distance. The DLT 2.0 will now display Range in ft or cm
(factory calibration).
CONNECTIONS:
POWER INPUT: Connect 9-32VDC/0.5 Amps to the + and - terminals. The Power Input GND must be
connected to the nearest Ground pole. A 1 amp fuse in line is recommended.
Sens
Sens
A
B
4-20
Diff
RLY2
RLY1
NO
C
NC
NO
C
NC
DATA LOGGER OPTION
+ -
+ -
4-20
4-20
B
A
Sens
NC
C
NO
RLY5
RLY4
USB HARNESS
CONNECTOR
NC
Sens
C
NO
NC
RLY6
EXTRA RELAYS OPTION
NC
C
NO
RLY3
DC
+–
–
+
DC
GND
CORE
SHLD
CORE
SHLD
WHT
GRN
WHT
GRN
C
NO
GND
Page 34
DLT 2.0 Differential Level Transmitter
--Data Logging------Log Site ID 00
}
Mode Level
Set Date Feb 18/2008
Set Time 11:27:40
Interval 10sec
Log Start
Mar 19/2009
12:28:41
99
Range
Flow
HRT
Volume
60min
30min
15min
10min
5min
2min
1min
30sec
Stop
Delete
DATA LOGGING (Optional)
Setup
Select
Data Logging from Menu Selections.
Log Site ID
Mode
Enter a number from 00 to 99. The site ID will become
part of the downloaded file name to help distinguish
downloads from different instruments. Press to store the
setting.
Select Level, Range, Flow, HRT or
Volume and press to store the setting. The logger
will auto-configure for 2 or 3 channel logging according
to the selected mode:
Flow - 3 channels: A Level
B Flow
Differential
Set Date
Set Time
Level - 3 channels A Level
B Level
Differential
Range - 2 channels A Range
B Range
HRT & Vol - 2 channels A Volume
B Volume
Press or to scroll and select Month, Day and Year.
Press to store the setting.
Press or to select the current time in Hours, Minutes
and Seconds. Press to store the setting.
Page 35
DLT 2.0 Differential Level Transmitter
Interval
Press or to select the logging interval. Press to
store the setting.
Log
Note:
You MUST delete old file and start a new log to apply any changes that
have been made to the
, Start or Delete the log file.
Stop
Press or to
Press or to
Delete and to delete the log file.
Start and to restart the logger.
Log Site ID, Mode or Interval.
RETRIEVE LOG FILE
Plug a USB Flash Memory Drive (not supplied by Greyline) into the USB output
cable from the instrument. The instrument display will show the USB file
download icon until the log file is transferred to the memory card and then display
file download completed icon. The USB flash drive may be removed.
Download file names will appear in this format:
DLT__00A.LOG
MODEL TAG DOWNLOAD
Tag is set according to the Log Site ID entered in the instrument Data Logging
menu.
Download letter will be A for the first download from an instrument. B for the
second, then C etc. At the letter Z a - character will appear indicating that the
maximum number of downloads for that instrument are on the USB flash drive.
Older files can be erased or moved from the flash memory drive or a new memory
drive can be used.
OPENING LOG FILES
Install Greyline Logger on your PC or laptop. Refer to the Help menu in the
program for detailed instructions.
Select File/Open/Instrument Log (.log) to open the log file from your USB flash
drive.
Page 36
DLT 2.0 Differential Level Transmitter
CONVERSION GUIDE
FROM TO MULTIPLY BY
US GALLONS CUBIC FEET 0.1337
US GALLONS IMPERIAL GALS 0.8327
US GALLONS LITRES 3.785
US GALLONS CUBIC METERS 0.003785
LITRES/SEC GPM 15.85
LITRES CUBIC METERS 0.001
BARRELS US GALLONS 42
BARRELS IMPERIAL GALS 34.9726
BARRELS LITRES 158.9886
INCHES MM 25.4
DEGREES F DEGREES C (°F-32) x 0.556
POUNDS KILOGRAMS 0.453
PSI BAR 0.0676
FOOT² METER² 0.0929
VOLUME CALCULATION FOR ROUND TANKS: 3.142 x R² x H
R = TANK RADIUS (½ TANK DIAMETER)
H = TANK HEIGHT
Page 37
DLT 2.0 Differential Level Transmitter
7.4 / 188 mm"
SPECIFICATIONS
6.46 / 164 mm"
5.12 / 130 mm"
Accuracy: 0.25% F.S.,
Repeatability: 0.1%
F.S., Linearity:
0.1%F.S.
Displays: White, backlit matrix -
displays flow rate,
totalizer, relay states,
operating mode and
calibration menu
DLT 2.0
Differential Level
Transmitter
10.94" / 278 mm
10 / 254 mm"
Calibration: built-in 5-key calibrator
with English, French or
Spanish language
selection
CONDUIT ENTRY
LOCATION
SIDE VIEW
Power Input: 100-240VAC, 50/60Hz, 30 Watts or
9-32VDC, 9 Watts max
Output: Isolated 4-20mA (1000 ohm load max.)
Control Relays: Qty 2, rated 5 amp 240VAC SPDT, programmable flow alarm and/or
proportional pulse
Enclosure: watertight, dust tight NEMA4X (IP 66) polycarbonate with a clear
shatter-proof face
Environmental Conditions: Relative humidity up to 80% -23 to 60°C ambient temperature,
maximum 5000 m altitude, pollution degree 4, Installation Category II.
Sensitivity: adjustable. Damping: adjustable
Electrical Surge Protection: Sensor, 4-20mA output and AC power input
Approximate Shipping Weight: 10 lbs (4.5 kg)
Standard Sensor PZ15
Maximum Range: 15 ft (4.57 m)
Minimum Range (Deadband): 8" (203.2 mm)
Operating Frequency: 92 KHz
Beam Angle: 8°
Operating Temperature: -40° to 150° (-40° to
65°C)
Temperature Compensation: Automatic, continuous
Max. Operating Pressure: 20 psi (1.35 bar)
Sensor Face: PVC
~4.25"
(108mm)
OVERALL
Sensor Body: PVC
Mounting: ¾" NPT
Cable Length: 25 ft. (7.6 m) continuous
3.125"
79.4 mm
RG62AU coaxial.
Optional 50 ft. (15 m)
continuous
Max. Cable Length: 500 ft. (152 m) RG62AU
coaxial (splice)
Hazardous Rating: CSA rated Intrinsically
Safe Class I, Groups
C,D, Class II, Groups E,F,G with Optional Intrinsic Safety Barrier.
Page 38
25ft(7.6 m) RG62AU
COAXIAL CABLE
(50 ft 15mOR
100 ft 30 m )OPTIONAL
3/4“ NPT
3/4" NPT
2.1" (53 mm)
ISOLATION
COUPLING
(SUPPLIED)
1.125"
(28.6 mm)
DLT 2.0 Differential Level Transmitter
Optional Sensor PZ32T
Maximum Range: 32 ft. (10 m)
Deadband (blanking): Programmable, minimum 12” (305
mm)
Beam Angle: 8° at 3 DB
Temperature Compensation: Automatic, continuous
Operating Frequency: 42 KHz
Exposed Materials: PVC and Teflon
Operating Temperature: - 40° to 150°F (-40° to 65°C)
Operating Pressure: 20 psi (1.35 Bar) maximum
Mounting: ¾” NPT (PVC isolation coupling
supplied)
Sensor Cable: RG62AU coaxial, 25 ft. (7.6 m)
standard
Hazardous Rating: with optional Intrinsic Safety Barrier:
CSA, Class I,II,III, Div. I,II, Groups
C,D,E,F,G
Note: Max Range reduced to 25 ft
(7.6 m) with ISB option.
3/4"
NPT
ISOLATION
COUPLING
(SUPPLIED)
3/4"
NPT
SIDE
VIEW
END
VIEW
PVC
PVC
1-3/4"
44.5mm
L
TEFLON
O
TEF
25'(7.6 m) RG62AU
COAXIAL CABLE
3-7/8 "
98mm
5"
(127mm)
OVERALL
Optional PZ34
Maximum Range: 32 ft. (10 m)
Minimum Range (Deadband): 16" (406.4 mm)
Operating Frequency: 46 KHz
Beam Angle: 8º
Temperature Compensation: Automatic, continuous
Operating Temperature: -40° to 150ºF (-40° to 65ºC)
Maximum Operating Pressure: 20 psi (1.35 Bar)
Exposed Materials: PVC
Sensor Mounting: ¾” NPT
Maximum Cable Length: 500 ft (152 m)
Optional Hazardous Rating: CSA rated Intrinsically Safe
Class I, Groups C,D, Class II,
Groups E,F,G with optional
Intrinsic Safety Barrier.
Note: Max Range reduced to
25 ft (7.8 m) with ISB option.
~4.75"
(120 mm)
OVERALL
3.5”
89 mm
25ft(7.6 m) RG62AU
COAXIAL CABLE
(50 ft 15 m OPTIONAL)
3/4“ NPT
3/4" NPT
3.95”
100 mm
ISOLATION
COUPLING
(SUPPLIED)
1.7”
43.2 mm
Page 39
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