Spectrex 20/20MU - Mini Flame Detector - Manual (Page 46)

Spectrex Inc. - SharpEye TM ML & MU Flame Detector Manual – TM 767100, Rev. A, April 2005
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Figure 13: 4-20mA Wiring (Sink Option)
Figure 14: 4-20mA Wiring (Source Option)
Notes: The detectors are factory set to isolated 4-20mA-sink version.
To work at non-isolated 4-20mA source version, connect PIN 3 or blue
wire to PIN 1 or red wire. This can be done on the mating connector or in
the junction box in the cable option.
The 4-20mA will be measured between PIN 4 or pink wire and PIN 2 or
black wire.