Teledyne 200AH 用户手册

 

Because the span calibration calculation includes zero calibration data and zero calibration 
includes span calibration data, the zero and span calibrations can be performed in any order and 
the instrument will be accurately calibrated either way. 

After every zero or span calibration, it is very important to check the QUALITY of the 
calibration. The calibration of the M200AH involves balancing several sections of electronics 
and software to achieve an optimum balance of accuracy, noise, linearity and dynamic range. 

The M200AH can automatically compensate the NO

X

 and NO

2

 readings for the converter 

efficiency. There are 2 ways to enter the converter efficiency into the instrument. If the 
instrument is in single or independent range modes, there is just one converter efficiency 
parameter. If the converter efficiency is determined by some outside method, the efficiency 
coefficient can be keyed in as a decimal fraction through the front panel. The path is CAL-
CONC-CONV-SET. The second method is to have the M200AH compute the efficiency using 
the CAL-CONC-CON-CAL menu. See the Calibration Section 7.11 - Converter Efficiency for 
details. 

If AutoRange is enabled there will be 2 converter efficiencies, one for low range and one for 
high range. The procedure is identical for each range. To access the converter efficiency menu, 
the path is CAL-LOW-CONC-CONV for LOW range and CAL-HIGH-CONC-CONV for HIGH 
range. If NO

X

 or NO ONLY mode is set, the converter efficiency is disabled with the value set to 

1.0000. 

To disable the compensation, press CAL-CONV-SET and enter 1.0000 as the efficiency. Factory 
default is 1.0000. 

This menu item will tell if the installed software has factory special features or other non-
standard features. If you call Teledyne API service you may be asked for information from this 
menu. 

The AutoCal feature allows the M200AH to automatically operate the Zero/Span Valve option. 
This option allows a variety of periodic instrument calibrations and calibration checks. 
Information on setting up AutoCal is in Section 6.2.