AQ COMFORT Instruction & Operations Manual
Version 1.01
Page 29 of 44
3. Turn on the gas flow and observe the gas readings on the instrument. If the gas
reading for the sensor being calibrated does not increase after a few seconds,
turn off the gas flow until the problem is found. Otherwise, press OK.
4. Press the key labeled “
CALIB
” to enter the calibration menu.
5. Scroll down to
SPAN TIME
and set the value to
20 seconds
.
6. Scroll down to the sensor to be calibrated first. If the calibration lock is on, enter
the password
1315
.
7. Use the arrow keys to enter the span value printed on the calibration cylinder
being used. Press OK.
8. When the countdown reaches 3 seconds, there will be a series of beeps
indicating that the calibration has been preformed.
9. Verify that the reading for the sensor being calibrated matches the value entered
in the calibration menu, and that the reading for all of the other sensors is zero.
10. Turn off the gas flow.
11. Repeat this procedure for each electrochemical sensor to be calibrated.
Temperature and Humidity
Please contact E Instruments for proper Calibration Procedure
Pressure and Air Velocity Calibration Procedure
1.
Connect a pressure calibration standard to the pressure (+) connector on the
bottom of the instrument.
2.
In the SETUP menu, make sure the velocity sensor is off.
3.
Press the “
CALIB
” key to enter the calibration menu.
4.
Scroll down to
SPAN ∆P
and press OK.
5.
Using the calibration standard, generate a pressure value near the maximum
stated value for the scale being used, for instance 80 mbar if using the mbar
range.
6.
Enter the value generated as the span value using the arrow keys, and press the
enter key.
7.
Verify that the reading on the instrument matches the reading on the calibration
standard.
