User's Manual

Installing/Mounting

4.5 Mounting a pressure guard

SITRANS F C MASS 2100 Di 3-40

22 Operating Instructions, 07/2010, SFIDK.PS.028.Z1.02

4.5 Mounting a pressure guard

The sensor enclosure is supplied with two 1/8" nipples. These holes can be used for e.g. a

pressure guard, which can be connected to an automatic shut off valve which will stop the

flow in case of sensor pipe fracture.

Mounting of pressure guard

CAUTION

Avoid moisture, liquids or particles getting into the sensor enclosure

All sensors are filled with argon to avoid condensation. Penetration of humidity, liquids or

particles into the sensor may influence the measurement and in worst case affect the

measuring function.

Install a pressure guard as follows:

1. Place the sensor in a dry, clean place and leave it to acclimatize until it reaches ambient

temperature, preferred 20°C (68°F).

2. Carefully disconnect the nipple and mount the pressure guard. Use the enclosed spare

part sealing ring for proper sealing.

3. Make sure that the pressure guard does NOT touch any of the parts inside the sensor.

4. Check that the pressure guard has been correctively mounted and thoroughly tightened.

After dismantling the sealing ring must be replaced with a new sealing ring.