GB
START-UP MSA
14 Series 47K Gas Detector [SIL 2]
3.6. Electrical Connections
Warning
Installation should only be carried out by suitably qualified personnel.
During installation all relevant codes of practice and National wiring
regulations should be complied with especially in places where there is a risk
of explosion and fire. [Classified areas]
Refer to the MSA controller instruction manual for the sensor connection
details.
Where an earth connection to the junction box/sensor is required use the
earth terminal provided on the outside of the junction box.
The sensor connections are shown in Section 10, Wiring diagrams.
4. Start-up
Warning
Installation should only be carried out by suitably qualified personnel.
Before applying power ensure that all installation steps have been correctly
carried out and the cable connections and controller configuration are correct.
Caution
Ensure that the sensor current is correctly set to 310 mA for the
47K-PRP and 280 mA for the 47K-HT-PRP.
Allow a warm-up time of at least 30 minutes before calibrating the gas sensor.
Perform an initial calibration following the instructions in Section 5.1 “Calibration”
and the manual for the relevant MSA controller.
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