Users’ Manual
ESM-40S High sensitivity settlement monitoring system
Page
| 12
4.
Connect pressure vessel system to the pressure gage assembly to an air vent tube through valve
(5)
5.
Open isolation valve (1) and inlet valve (2) of reservoir and the outlet valve (4) of pressure vessel
6.
Switch on the compressor (maximum pressure 0.1 bar) and open valve (5) of pressure vessel and
valve (6) of the pressure gage assembly unit.
7.
Fill the reservoir with fluid up to the maximum level marked on the fluid level scale of reservoir
8.
Switch off the compressor and close inlet valve (2) of reservoir and the outlet valve (4) of pressure
vessel.
9.
Open pressure release valve (7) of pressure gage assembly
10. Open outlet valve (3) of the reservoir. Fluid inside the reservoir will start flowing towards the sensors
11. Repeat the cycle (steps 1 to 10) till all the sensors are filled with fluid
12. Open air bleed screw of each sensor to remove trapped air. Open it for 3~4 seconds and close it
immediately.
CAUTION!:
Care should be taken while filling to ensure that no air is seen trapped in the liquid lines. Also
check for any leakages near tubing/T-joint and the proper elevation of each sensor.
NOTE:
The sensors are calibrated in the factory using distilled water (specific gravity taken as 1000
kg/m
3
) and so the calibration coefficients given in the test certificate are valid when the fill
liquid is de-aired distilled water. In case other fill fluids (mixture) has to be used, contact factory
for new calibration coefficients suitable for the density of that fill fluid.
NOTE:
After installation wait for the readings from the sensors to stabilize over a period of atleast 24
hours.
NOTE:
The desiccant in the moisture trap should be changed in case it changes its color from blue
to pink.
