The MEMPRO Ex C measuring instrument operates in accordance with the Pitot static principles, i.e. the level signal is proportional to the hydrostatic pressure in a measuring tube plunged into the liquid. It is used for measuring fill-levels of flammable liquids. The device is approved for use in danger zone 0 for flammable media assigned to explosion group IIC. The MEMPRO Ex C fill-level transmitter is used as a passive 2-pole device in intrinsically safe circuits. It converts the backpressure signal into a load independent current within a range of 4 to 20 mA.

For measuring the fill level of tank (atmospheric pressure) with an Ex area requirement. The device is suitable for flammable liquids and for use in ATEX Ex area (see the agreements herein after). The sensor (ceramic) is in contact with the vapours not directly with the fluid.

Scales:
0 to 1000 mm Water Column
0 to 2000 mm Water Column
0 to 4000 mm Water Column

Accuracy: < 1% Full scale

Process connections:
BSP 1"
Sleeve nut 1 1/2”

Materials: Stainless steel 1.4571
Output signal: 4-20 mA

Ambient temperature:
-20 ... +70 °C (equipment group 2)
-20...+55° C (equipment group 1/2)

Pressure: Atmospheric
Electric connection: Acc. to ATEX requirement – special cable with a pressure compensating tubing 
Sensor: Ceramic; Capacitive; With automatic temperature compensation 

Certification: TÜV 04 ATEX 2420

Agreements:
Ex II 2 G EEx ia II C T6
Ex II 1/2 G EEx ia II C T6

CE Marks: EMC (89/336/ECC)