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EJX110A Level Transmitter Installation Guide
Selecting a Transmitter & Calculating Your Range
Transmitters are ranged in 'mmWG' – which is
short for 'Millimeters Water Gauge'.
1mmWG is the pressure of 1mm of water on your
transmitter.
So when used on water, a 1m tank will require a
transmitter that can read 0‐1000mmWG.
Lighter liquids provide less pressure per mm ‐ to
calculate the correct scale for your transmitter,
multiply the H dimension by the specific gravity of
your liquid. For example, to calculate the range on
a transmitter used on a 1m tank of diesel, you
would multiply the height (1000mm) by the SG
(0.7) to get an effective range of 0‐700mmWG.
For 0‐1000mmWG, use a low range transmitter ‐ EJX110A‐DLS4G‐924EB/SU2
For over 1000mmWG, use a medium range transmitter – EJX110A‐DMS4G‐924EB/SU2
Installation
Your transmitter must connected to a tapping point that is as close as possible to the bottom of your tank, as
the transmitter can only read the volume of liquid above it.
You can connect it directly to the tapping point, or connect it via pipework. However, the pipework must also
lead downwards and must not contain any loops.
PLEASE NOTE: The 'H1' dimension (the distance from the tapping point to the transmitter) may not exceed the
'H' dimension (the height of the tank).
HIGH
THE AREA BELOW THE TAPPING POINT IS UNREADABLE
DP TRANSMITTER
NOTE THE 'HIGH' AND 'LOW' SIDES
LOW
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Summary of Contents for III EJX110A
- Page 1 EJX110A Level Transmitter Installation Guide Selecting a Transmitter & Calculating Your Range Transmitters are ranged in ‘mmWG’ – which is short for ‘Millimeters Water Gauge’. 1mmWG is the pressure of 1mm of water on your transmitter. So when used on water, a 1m tank will require a transmitter that can read 0‐1000mmWG. Lighter liquids provide less pressure per mm ‐ to calculate the correct scale for your transmitter, multiply the H dimension by the specific gravity of THE AREA BELOW THE TAPPING POINT IS UNREADABLE your liquid. For example, to calculate the range on a transmitter used on a 1m tank of diesel, you would multiply the height (1000mm) by the SG DP TRANSMITTER NOTE THE ‘HIGH’ AND ‘LOW’ SIDES (0.7) to get an effective range of 0‐700mmWG. HIGH For 0‐1000mmWG, use a low range transmitter ‐ EJX110A‐DLS4G‐924EB/SU2 For over 1000mmWG, use a medium range transmitter – EJX110A‐DMS4G‐924EB/SU2 Installation ...
- Page 2 Finding g Controls The zero adjustment s screw is The range‐se etting switch i is located The vent plug (or vent screw w) is located u under a small metal plate underneath the display – you will plugged into th he body of th e on the rig ght‐hand side e of the need to unsc crew the clear r front ransmitter. If you loosen th he nut at transmitt ter. Use a scre ewdriver to cover in orde er to access it t. he tip of the p plug, you will allow the loosen th he cover and a access the ...