Ultra1000 Wireless Detectors
(Battery Operated)
Rev 2
Page 14
9.
After 2 minutes the sensor will display
Adjustng
for 5 to 15 seconds while making
adjustments and recording the calibration data into memory. When completed the display
will starts flashing rapidly. At this time remove the calibration gas and allow the sensor to
clear.
Do not remove the calibration gas while the sensor is adjusting. Remove the gas only
when Calibration OK message is displayed.
10.
The sensor calibration has been successfully completed and “
Calibrat OK
” message is
displayed for few seconds.
11.
The sensor will return to normal operation once all the calibration gas is cleared out of the
sensor head and the reading goes to zero.
Also refer to
“Sensor calibration Flow Chart
” for quick calibration review and “Calibration Error
and remedies”
4.1 Adjust Sensor Zero Only
For sensors that have been in service for a long period of time may suffer an upward shift in zero
set point. That is the sensor might be reading a low gas concentration. This can be remedied by
adjusting the zero without performing the full calibration.
To Adjust the zero, follow the steps below
Assuming the ambient air is free of any toxic gases ( fresh air for oxygen sensor 21%)
Using the magnetic wand initiate the calibration model via internal magnetic switch on the
left side.
The sensor goes into calibration mode and after few seconds prompts the user to apply
calibration gas.
Once the “Cal Gas” message is displayed simply touch on the
right
side (4 o’clock positon) of
the enclosure for internal magnetic switch.
The message “
Zero Adj – OK
” will be displayed on the LCD.
The zero is adjusted and after few seconds the sensor will return to normal operation.
