YOKOGAWA EXAxt ZR22G, User Manual, Page: 84 / 211

<5. Wiring>
5-7
IM 11M12A01-02E 16th Edition : Mar. 19, 2020-00
5.2.4 Wiring for Power to Detector Heater
This wiring provides electric power from the converter to the heater for heating the sensor in the
detector.
ZR22G
Detector
ZR402G
Converter
(1) Ambient temperature of the detector: 75°C or less
(2) Ambient temperature of the detector: exceeding 75°C
Heat-resistant wiring
HTR 7
HTR 8
HTR 7
HTR 8
HEATER
HEATER
Terminal box
F5-7E.ai
ZR22G
Detector
ZR402G
Converter
Figure 5.6 Wiring for power to detector heater
Cable Specifications
Basically, cables (2 cores) that withstand temperatures of at least 80°C are used for this wiring.
When the ambient temperature of the detector exceeds 75°C, install a terminal box, and connect
to the detector using six-piece 600 V silicon rubber insulated glass braided wires.
5.2.5 Wiring for Detector Output
This wiring enables the converter to receive cell output from the detector, output from a
thermocouple and a reference junction compensation signal. Install wires that allow for 10 Ω of
loop resistance or less. Keep detector wiring away from power wiring.