Percent Oxygen Analyzer | Operation | |
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4.6.2 Air Calibration
To perform air calibration, make sure you have air flowing through the same inlet you use for span calibration at a flow of 1- 5 liters per minute. Wait for readings to stabilize.
Press both the SET ALARM 1 and SET ALARM 2 simultaneously. The LED display will show “OFSt” for a few seconds. After that the instrument should read near 20.9%.
The sensor output is expected to be near zero millivolts, if the offset of the sensor is too high, the analyzer will not calibrate.
4.7 Supplementary Information
If, during the span procedure, you pressed the SPAN button by mistake, you must wait five minutes for the analyzer to resume analysis or you can press the UP button and then the DOWN button. (Pressing the UP and DOWN buttons causes the analyzer to
If during the span procedure, you press the RANGE or ALARM buttons:
-either the range or alarm routine will be activated.
-any changes to span will be rejected.
-the 60 second alarm delay will not occur, i.e., the alarms will be responsive immediately.
CAUTION: TI/AI CONSIDERS THE ACTION OF PRESSING THE ALARM OR RANGE BUTTONS TO BE AT YOUR (THE USER’S) DISCRETION AND NOT UNDER GUARANTEE OF ALARM PROTECTION.
4.8 Probe Temperature
The probe temperature can be displayed momentarily and adjusted if needed. While the instrument is in normal mode, displaying oxygen concentration, press the UP and DOWN arrow keys simultaneously. The red LED display will show the probe temperature in degrees centigrade for five seconds.
Teledyne Analytical Instruments | 37 |