Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 18)

<3. Checking After Replacing Heater Unit>
3-1
IM 11M12A01-21E
3. Checking After Replacing Heater Unit
3.1 Checking Wiring
Model ZR22A (Separate type heater) uses screw termination.
CELL +
TC +
TC –
TC CELL CJ
1 2 3 4 5 6
8 7
HTR
F3.1E.ai
HEATER
Figure 3.1 Model ZR22A Terminal wiring diagram
Model ZR202A (Integrated type heater) uses a connector.
Zero
Span
F3.2E.ai
Connector
for heater
Signal connector
Solenoid valve connector when
ZR20H automatic calibration unit used.
Figure 3.2 Bottom view of Model ZR202A Connector wiring diagram
3.2 Checking Heater Operation
After turning on the power, check that heater heats up normally.
For separate type (ZR22A) see IM11M12A01-02E, 03E section 7.3, and for integrated type (ZR202A)
see IM11M12A01-04E, 05E section 7.3 “Supplying Power to Converter Unit”.
After confirming that operation is satisfactory, return detector to operation. Calibrate before taking
measurements.