Ametek Thermox CEM O2/TM, User Manual

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5-10 | Thermox CEM O2/TM
Initiate Verify
The Initiate Verify menu option allows you to perform an automatic, re-
mote, or manual verification. The Auto Verify and Remote Verify selections
are only available if you have installed an Auto Calibrate Card in the Series
2000 control unit and have a Remote Calibration Unit (RCU). If the Series
2000 control unit detects that these options are not installed, it will auto-
matically prompt you with a manual verify when you select the
Initiate
Verify menu option.
Automatic verifies can also be set to run at predetermined frequencies
using the cycle times you define using the Set Cal Timers/Set Auto Timers
menu option. Once you’ve set these cycle times, you don’t need to select
the Initiate Verify menu option to run an automatic verify.
See the “Remote Calibration Unit Connections” section in the Installation
chapter for help on how to trigger an automatic calibration using a digital
input. If using a digital input to trigger the auto verify, you must make
sure that for the Setup Key/Remote Switch Config selection must be set to
verify, and not calibrate.
If using the RCU to perform an automatic or remote verify operation,
the verify gas should be placed in the span gas port of the RCU.
Auto Verify
Before you can start an auto verify, you must do the following:
• Enter the verify gas value to match the verify gas cylinder you intend
to use to verify your system (Configure Verify).
• Determine the acceptable verify range.
• Define how long you want the verify gas to flow through the sensor
during the verify operation (Set Cal Timers/Cal Gas Duration). Be sure
to allow enough time for the verify gas to stabilize when you define
this time.
• Define a time period for the system to recover from reading the verify
gas to reading process gases (Set Cal Timers/Recovery Duration).
Then you can start the auto verify as follows:
1. Select the Initiate Verify option from the Calibrate key menu.
NOTE
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