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5-5 Maintenance and adjustments
5-5-1 Zero point adjustment
Please adjust the zero point periodically or in each case, by zero point adjusting
mode(zero calibration mode). If the instrument was turned off for a long time, please
adjust the zero point after running RI-2000W for 4 or 5 hours.
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NOTE
In adjusting zero, please wait until the reading stabilises after drawing in zero
calibration gas (zero gas for short).
Please follow these instructions
1.
Press and hold down ZERO button for 3
seconds during detection mode. The LCD will
display “HOLD ZERO KEY”.
To interrupt, release your finger.
2.
RI-2000W will enter zero calibration mode
and will display “SET ZERO?”. Please confirm
there is no interference gas and the air is fresh
before pressing SET button.
3.
The current gas concentration will be
displayed. Press SET and the adjustment
(calibration) will start.
4.
The result will be displayed. “ZERO SET OK”
will be displayed if the calibration has gone
through without any problems.
If there were problems and calibration had failed, “FAIL ZERO” will be displayed.
Press ESC or SET in this case and go back to gas detection mode.
If “FAIL ZERO” is still on the screen after confirming there is no leakage in the
instrument and tubing. and you have gone through the procedure above again, sensor
trouble is predicted. Please contact us after turning off RI-2000W.
