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Operating Instructions Teledyne API - Model 200EH/EM Operation Manual
118
6.13.5.5. Assigning an iDAS parameter to an Analog Output Channel
The M200EH/EM analog output channels can be assigned to output data from any of the 40+ available iDAS
parameters (see Table A-6 of Appendix A.5). The default settings for the four output channels are:
Table 6-22: Analog Output Data Type Default Settings
CHANNEL DEFAULT SETTING
PARAMETER
A1 A2 A3 A4
3
DATA TYPE
1
NXCNC1 NOCNC1 N2CNC1 NXCNC2
RANGE 0 - 5 VDC
2
REC OFS 0 mVDC
AUTO CAL. ON
CALIBRATED NO
OUTPUT ON
SCALE 100 ppm
UPDATE 5 sec
1
See Table A-6 of M200EH/EM Appendix A for definitions of these iDAS data types
2
Optional current loop outputs are available for analog output channels A1-A3.
3
On analyzers with O
2
sensor options installed, iDAS parameter O2CONC is assigned to output A4.
REPORTING GAS CONCENTRATIONS VIA THE M200EH/EM ANALOG OUTPUT CHANNELS
While the iDAS parameters available for output over via the analog channels A1 thru A4 include a vide variety
internal temperatures, gas flows and pressures as well as certain key internal voltage levels, most of the iDAS
parameters are related to gas concentration levels.
Two parameters exist for each gas type measured by the M200EH/EM. They are generally referred to as range
1 and range 2 (e.g. NXCNC1 and NXCNC2; NOCNC1 and NOCNC2; etc.). These take the place of the high
and low concentration ranges of previous versions of the analyzer software. Concentrations for each range are
computed using separate slopes and offsets which are also stored via separate iDAS parameters.
NOTE
If an analog output channel is set to report a gas concentration (e.g. NXCNC1; NO
x
concentration; Range 1) it is generally a good idea to use 80% of the reporting range
for that channel for the span point calibration.
If both available parameters for a specific gas type are being reported (e.g. NXCNC1
and NXCNC2) separate Calibrations should be carried out for each parameter.
04521C (DCN5731)