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6
When settings are complete press OK.
Returns to the menu selection screen.
7
Press Cancel.
Returns controller to normal operation.
Zero and Span
This menu is for calibrating controller measurements to the connected gas detector.
1
Access the menu system and select the
Press Up or Down. The icon flashes.
2
Press OK.
The top left of the display reads CO to indicate the set zero menu mode. The gas reading
displays the current real zero value.
Note
Ensure the sensor is in clean air before carrying out the next step. For oxygen
apply nitrogen to the sensor at 0.3 l/min.
3
When the gas reading is stable adjust the reading to zero.
Use the Up/Down buttons.
4
Press OK when the reading is zero.
The display now shows a 10 second countdown.
When the countdown is complete the display shows GOOD if the
zero has succeeded, and then changes to the span mode.
If the zero fails the display shows FAIL and return to the
beginning of the set zero mode.
After successfully setting the zero, the display then changes to
show CS in the top left to indicate the set span mode.
For O
only — fit a flow adapter to the gas detector sensor, see
2
step 5, and apply N
5
Fit a flow adapter to the gas detector sensor.
First remove any accessory fitted to the sensor, e.g. weather protection.
6
Apply calibration (span) gas to the detector at a flow rate of
0.3 l/min.
Note
Honeywell Analytics recommend the use of half full-scale gas for calibration
purposes (contact a distributor for the supply of calibration gas).
The gas reading on the controller display shows the measured reading from the detector
7
When the gas reading is stable adjust the reading to the actual concentration of the
calibration gas being applied to the detector.
Use the Up/Down buttons.
TP1MAN Issue 3 Apr 06 (MAN0630)
at 0.3 l/min.
2
menu option.
User Settings
40
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