Spectrex Xenon 700 SIL Open-Path Gas Detection System - Manual (Page 70)

SafEye TM Xenon 700S SIL Gas Detector
58 General Instructions For Electrical Wiring
Figure 12: 0-20mA Wiring (Sink) For Wiring Option 1 and 3
Figure 13: 0-20mA Wiring (Source) For Wiring Option 1 and 3
Notes:
 The Detectors are factory set to isolated 0-20mA-sink version.
 For non-isolated 0-20mA version (Source), connect Terminal 8 to
Terminal 1. The 0-20mA meter is connected between Terminal 7 and
Terminal 2.