User Manual PolyGard
®
2 Sensors 2023-11 Page 4 | 40
6.5 Exchange of Sensor Head .................................................................................................................. 21
6.5.1 Sensor SC2 ............................................................................................................................. 21
6.5.2 Sensor MC2 ............................................................................................................................ 21
6.5.3 Perform Function Test ......................................................................................................... 21
7 Inspection and Service.......................................................................................................... 22
7.1 Inspection ............................................................................................................................................. 22
7.2 Maintenance and Calibration ........................................................................................................... 22
8 Troubleshooting ................................................................................................................... 23
8.1 Indications for the SC2 ...................................................................................................................... 23
8.2 Indications for the MC2 ..................................................................................................................... 23
9 Specifications ....................................................................................................................... 24
9.1 General .................................................................................................................................................. 24
9.2 Digital Sensor SC2 .............................................................................................................................. 25
9.3 Analog Sensor MC2 ............................................................................................................................. 25
9.4 Sensor Element .................................................................................................................................... 26
A: Catalytic Sensor Element (Pellistor) for Combustible Gases .................................. 26
B: Electrochemical Sensor Element for Toxic Gases and Oxygen ............................... 28
C: Semiconductor Sensor Element for Freon Gases, Ethylene and Ammonia .......... 32
D: Infrared Sensor Element for Methane, Propane, Carbon Dioxide (and R32) ....... 33
E: MPS™-Sensor Element ...................................................................................................... 35
10 UKCA Declaration of Conformity .......................................................................................... 37
List of abbreviations .............................................................................................................. 38
Glossary..................................................................................................................................... 39
Revision List ............................................................................................................................. 40
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