Teledyne 200AH 用户手册

 

1. 

Press CALS 

The M200AH enters the span calibrate mode and switches the 
Z/S valves to admit NO span gas. 

2. 

Select LO or HI 
range 

If AutoRange is enabled you will be prompted for which 
range to calibrate. Select the LO or HI range, then press 
ENTR. 

3. 

Wait 10 min 

Wait for reading to stabilize at span value. 

4. 

Press SPAN 

If you change your mind after pressing SPAN, you can still 
press EXIT here without spanning the instrument. 

5. 

Press ENTR 

Pressing ENTR actually changes the calculation equations 
and causes the instrument to read the expected NO and NO

X

 

span concentrations. 

6. 

Press EXIT 

The Zero/Span valves are switched back to admit gas through 
the sample port and instrument returns to SAMPLE mode. 
Immediately after calibration, data is not added to the DAS 
averages. 

 

The M200AH can be automatically calibrated periodically using the Zero/Span Valve Option 
and features in the AUTOCAL menu. The Dynamic Zero/Span feature can be enabled when an 
AutoCal Sequence is set up. Refer to Section 6.2 for information. 

With the Dynamic AutoCal in operation, the M200AH is being continuously re-calibrated. We 
recommend that the quality of the calibrations be carefully monitored to assure that the 
instrument is performing correctly. Subtle fault conditions can sometimes be masked by 
continuous re-calibration.