41
Before pressing the SHIFT key you may wish to observe the readings of the
other gas parameters for evidence of cross sensitivity and also the oxygen
reading for confirmation that there is no instrument leak!
As an example, if you wish to span calibrate the NO sensor using 300 PPM
certified gas proceed as follows:
1. Set the time that you must feed the span gas before executing the span
adjustment. To do this use the UP, DOWN & ENTER keys to change the
SPAN TIME parameter.
NOTE: For NO and CO calibrations a minimum of 4 minutes is adequate.
For NO
2 and SO2 calibrations a minimum of 8 minutes is required.
2. Enter the NO span value. Use the UP, DOWN & ENTER keys to change the
NO SPAN value. First set the hundreds digit, then press ENTER to advance
the cursor to the tens digit, and repeat for the units digit.
3. Pressing ENTER again will bring up the following confirmation box on the
display:
Press the ENTER key to begin the calibration. The unit will wait for the
amount of time set in step 5. The display will show the time remaining and
the span gas value.
Press
Enter to Span
Shift to Abort
** SETUP MENU **
System Setup
►Zero/Span Setup
Storage Setup
Printer Setup
Sensor Setup
** SPAN MENU **
CO Span: 200PPM
NO Span: 200PPM
NO2 Span: 200PPM
SO2 Span: 200PPM
Comb Span: 1.0%
Draft Span: 10 "
Zero Time: 60sec
Span Time:120sec
Calib History
To Next Page
Loading...