Spectrex 20/20MI - Mini Triple IR (IR3) Flame Detector - Manual (Page 48)

Spectrex Inc. - SharpEye TM Mini IR3 Flame Detector Manual – TM 787100, Rev. D April 2011
40
Figure 11: 4-20mA Wiring (Sink Option)
Figure 12: 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.