Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 101)

<7. Startup>
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IM 11M12A01-02E
7.11.2 Checking Calibration Contact Output
The calibration contacts are used for solenoid valve drive signals for the ZR40H Automatic
Calibration Unit. When using the ZR40H Automatic Calibration Unit, use the calibration contact
output to check that the wiring connections have been properly completed and check equipment
operation.
(1) Referring to Section 7.11.1, display the contact check display.
(2) Select the “Calibration contacts” to display the panel display as Figure 7.15.3 shows.
(3) Open the “Zero gas contact” and the “Span gas contact”. This will help check the automatic
calibration unit and wiring connections.
Zero gas contact : Open

Span gas contact : Open
Enter
Calibration contacts
F7.15.3E.ai
Figure 7.15.3 Calibration Contact Check Display
NOTE
“Open” and “Closed” displayed on the Calibration contacts display indicate actions of drive
contacts and are opposite to the valve open and close actions. If “Open” is displayed on the
Calibration contacts display, no calibration gas flows. If “Closed” is displayed on that display,
calibration gas flows.
7.11.3 Checking Input Contacts
(1) Referring to Section 7.11.1, display the contact check display.
(2) Display the “Input contacts” check display as Figure 7.15.4 shows. The “Open” or “Closed”
input contact in the display shows the current contact input terminal status and the display
changes according to the contact status. Using this enables you to check that the wiring
connections have been properly completed.
Input contact 1 : Open
Input contact 2 : Open
Enter
Input contacts
F7.15.4E.ai
Figure 7.15.4 Input Contact Check Display
8th Edition : Jan.13,2012-00