< 4. Piping >
4-12
IM 11M12D01-01E
4.2.4 Piping to the High Temperature Probe Adapter
The piping to the high temperature probe adapter is required when a high temperature detector is
used.
This piping is the same as the one in the system using flow setting units for manual calibration. See
Subsection 4.1.4.
4.2.5 Piping for Blow back
The piping for blow back is required only when the blow back is conducted in a system using a high
temperature detector. This piping is the same as the one in the system using flow setting units for
manual calibration. See Subsection 4.1.5.
4.2.6 Piping for Indication Check
To perform an indication check using the third check gas, the piping to allow the third gas to flow into
the calibration gas line is required in addition to the system configuration shown in Figure 4.10.
Route the piping from the third check gas cylinder through a pressure reducing valve and a stop valve
to the solenoid valve for switching the span gas and the third check gas, as shown in Figure 4.12.
It is recommended that the piping and wiring for the solenoid valve for switching the span gas and the
third check gas be installed to allow the third check gas to be introduced when powered. This solenoid
valve is activated by a contact signal from the averaging converter (Power wiring is separately
required.)
Stop valve
Analog outputs:
(Averaged and
individual output)
Contact output
Contact input
Instrument air
Power supply
Detector
Solenoid valve
Calibration gas line
Reference
gas line
Flowmeter
Needle valve
Pressure
reducing valve
Air set
Needle valve
Flowmeter
Zero gas cylinder
Span gas cylinder
(Instrument air)
Calibration
contact outputs
Signal
Heater
Averaging converter(AV550G)
Third check gas cylinder
Contact
output
*: If optional 24 V outputs are specified for solenoid valve (MS Code "/24"), no external power supply for solenoid valves is required.
The solenoid valves are powered from the AV550G Averaging Converter. Never connect external power sources in the wiring for
solenoid valves.
Fig4-12E.ai
*
*
*
Solenoid
valve
Figure 4.12 Piping for Automatic Indication Check Using 3rd Check Gas
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