User guide

Application Guide | Gas detection in refrigeration systems
© Danfoss | DCS (MWA) | 2018.05 DKRCI.PA.S00.A1.02 | 520H12772 15
Bump test A bump test cannot supersede any tests
involving calibration. It is only a function test
(signal or no signal).
Bump test of gas sensors (this test is a function test - it is not a calibration)
Method Refrigerant
SC EC P IR
Semi-
conductor
Electro-
chemical
Pellistor Infrared
Ampoules Ammonia
4
Ampoules (or lighter gas) HCFC, HCF
4 4
Lighter gas HC - Hydro Carbon
4 4
Ampoules (or breath on sensor) CO
2
4
Fig. 10
Method II
Calibration of gas detectors by
means of calibration gas
(Continued)
=
Calibration equipment
Generic
calibration
gas
Calibration
adapter
Valve/Flow
regulator
+
Gas detection unit
tested and calibrated
Integrated digital calibration function
GDU with display
GDU without displayService tool