3 - 18
Connector to relay board <CN3>
Connector
<CN3>
(Transister output)
<D-sub 9P>
Signal output for
zero calibration
Signal output for
sample gas selection
Signal output for Ch1
span calibration
Signal output for Ch2
span calibration
Signal output for Ch3
span calibration
Signal output for Ch4
span calibration
Signal output for Ch5
span calibration
Power supply for relay
drive 5V DC
1
2
3
4
5
6
7
8
9
Solenoid valve drive signal output for calibration
Cable
I/O terminal module
Relay board
Contact relay
CN3
5V
SV1 to SV4: solenoid valves
Solenoid valve
drive power
SV1
SV2
SV3
SV4
1
3
4
5
9
Standard gas for calibration
<Gas sampling system>
Refer to “Section 3.4.6 Example configuration
of gas sampling system”.
<Electrical system>
Example of using solenoid valve drive signal output for calibration
Relay board and exclusive cable (D-sub 9p straight cable: 1.5 meters)
are available on request.
SV4
Ch2
span
SV3
Ch1
span
SV2
SV1
Zero
Membrane filter
Electronic
gas cooler
Flowmeter
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and manual calibration.
$QRXWSXWLVIURPDWUDQVLVWRUUDWLQJV9P$
A transistor is turned ON before starting each calibration.
Sample selection output is ON during measurement and OFF during calibration.
If calibration is not performed, the other transistors are OFF.
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5HIHUWR³6HFWLRQ
In case of automatic calibration
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Note) No. 9 pin is for solenoid valve ON/OFF relay drive power (5V DC/0.5A, max).
Use No. 9 with reference to the diagram.
