KROHNE OPTIBAR PC 5060 C EN - Manual (Page 22)

3
INSTALLATION
22
OPTIBAR PC 5060 C
www.krohne.com 04/2014 - 4003437201 - MA OPTIBAR PC 5060 C R01 en
The filter element is integrated into the sensor assembly via a rotating metal ring. Align the
metal ring towards the bottom to better protect the filter element from deposits. Devices with
absolute pressure feature a dummy plug instead of a filter element.
For devices with a second process barrier, the sensor assembly is completely encased by an
additional, gas-proof feedthrough. Additional venting is not required for absolute pressure
sensors. With relative pressure sensors, the ambient pressure is measured and compensated by
an additional sensor in the electronics.
Devices in Ex d version
Figure 3-4: Ventilation Ex-housing
1 Single chamber housing, aluminium and stainless steel precision casting
2 Double chamber housing, aluminium and stainless steel precision casting
3 Rotating metal ring
4 Filter element
Devices with second process barrier
Figure 3-5: Ventilation gas-proof feedthrough
1 Filter element
.book Page 22 Friday, May 2, 2014 12:49 PM