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FirstCheck+ 1000, 2000, 3000 & 5000
Instrument Menu
Custom Calibration procedure (continued)
6. At the end of the countdown a tick will appear, indicating that ZERO has been
accepted. Press ESCAPE.
7. Disconnect the carbon canister and replace the cap ends. The useful life of the carbon
canister will be shortened if the filter is open to atmosphere for prolonged periods
8. Scroll through the options and select the relevant gas or gas mixture and press
the ENTER key.
NOTE: If you have chosen single calibration gases then all sensors will be available.
If you have chosen a mix this will be available on screen or a combination of both.
Ion Science recommends that if you are using single gases to calibrate the sensors
then it is done in the following order: VOC, LEL, CO then the H
calibrated automatically with the ZERO.
9. This screen shows a Gas Cylinder symbol, the gas or gas mix and gas
concentration previously set up via the 1stPC software.
If acceptable press the ENTER key to proceed.
10. A screen will show gas type, a gas bottle and a flashing highlighted number.
11. Present the instrument with the calibration gas and press ENTER. The number
will begin to count down showing how long the instrument needs to be presented
with the gas. A tick will appear indicating that the calibration has been
accepted. Press ESC to go back to the calibration menu.
12. Now repeat the above gas calibration procedure for any other combinations of
calibration gases, or press ESC until you are back to the first menu.
13. Replace filter and probe as necessary, Carry out a Bump Test to ensure
calibration was successful. Instrument is now ready for use.
If you are not successful in calibrating the instrument check the following points:-
The carbon canister may be contaminated
The calibration gas canister may be low or empty
If using a connector pipe there may be a kink restricting the flow of gas
PID lamp may require cleaning
PID lamp may need replacing
Cell may need blowing out with clean air
Ion Science Ltd
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