5-8 | Thermox Series 2000 WDG-IV / IVC / IVCM
If you have the combustibles option, you are also prompted to calibrate
the combustibles span gas:
O2 xx.x %
Cmb yyyy Set yyyy
CH4 zzzz Set zzzz
Press ENTER to Span
6. Press Enter when the combustibles span gas reading(s) stabilizes on
the far left of the display. If you have the methane option with RTD-type
combustibles detector, combustibles and methane are handled
simultane-
ously
using a single calibration gas. If you have the methane option with
the Hot-wire type combustibles detector, the combustibles and methane
are handled separately using two calibration gases.
Then, if you specified a recovery time, the system will display the recov-
ery time remaining:
Recovery xx:xx
System Calibrating
The system returns to monitoring process readings.
Manual Calibrate/Manual Verify
Verify the type of combustibles detector (Hot Wire or RTD type) in-
stalled on the unit before proceeding. Specific instructions are given
for the Hot Wire and the RTD type.
To perform a manual calibration or verification, follow these steps:
1. Enter the calibration gas values to match the span and zero calibration
gases you intend to use to calibrate or verify your system.
2. Select Initiate Cal or Initiate Verify from the Calibrate key menu, de-
pending on whether you want to perform a calibration or verication.
3. Select Manual Calibrate or Manual Verify.
You are prompted to apply the O
2
span gas to the calibration gas inlet port
on the sensor (tubing must be free of oil and dirt):
Inject Span Gas
ENTER to Continue
CANCEL to Abort
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