YOKOGAWA ZR22S, User Manual

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<3. Installation>
3-1
IM 11M13A01-02E
3. Installation
This chapter describes installation of the following equipment:
Section 3.1 General-purpose Detector (except ZR22S-

-015)
Section 3.2 High Temperature Detector (ZR22S-

-015)
Section 3.3 ZR402G Converter
Section 3.4 ZA8F Flow Setting Unit
Section 3.5 ZR40H Automatic Calibration Unit
CAUTION
ZR402G Converter and ZR40H Automatic Calibration Unit must not be located in hazardous area.
CAUTION
Requirement for explosion-proof use:
The ZR22S is connected to a ZR402G or AV550G*
1
that is mounted in a non-hazardous area.
The ambient temperature is in the range -20 to +60°C. The surface temperature of the ZR22S is
not over the temperature class T2 (300°C)* 2 .
*1: Refer to IM 11M12D01-01E
*2: The terminal box temperature does not exceed 150°C.
Oxygen concentration of sample/reference/calibration gas shall not exceed that found in normal
air, typically 21 vol%.
CAUTION
• When connecting an AV550G, the AV550G should be installed in a non-hazardous area.
• When using options like automatic calibration or blow back, if the corresponding solenoid valves
are to be mounted in a hazardous location then be sure to use explosion-proof solenoid valves
and appropriate wiring in explosion-proof conduit.
Averaging Converter (AV550G)
Heater
Signal
Contact
output
Calibration
contact outputs
Span gas cylinder
(Instrument air)
Zero gas cylinder
Flowmeter
Solenoid valve
Needle valve
Air set
Pressure reducing valve
Needle valve
Flowmeter
Reference
gas line
Calibration gas line
Solenoid valve
Detector
Power supply
Instrument air
Contact input
Contact output
Analog outputs:
Averaged and
individual outputs
Stop valve
F03-1E.ai
Non-hazardous area Hazardous area
Figure 3.1 Connection with AV550G
Regarding the AV550G installation procedure, refer to IM 11M12D01-01E.