User's Manual

210

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REV. 1.10/2002

RMT LtdRMT Ltd

DX6106

2-6

Calculated coefficients … of polynomial

expression and zero ratio may be stored into device

internal on-board EEPROM memory.

The first calibration is made by Manufacturer.

The factory standard calibration uses not less than 5

standard gas mixtures.

Several calibrations as above described are made at

different ambient temperatures (in a specified

operating range) and at corresponding optimal

operating temperatures of integrated detector-emitter

pair.

Up to 15 such calibrations are possible to store for

further application.

Format of calibration data stored in the EEPROM

memory chip after manufacturer calibration is

described below in Chapter 3.

2. During routine operation the detector’s output

signals should be measured to calculate ratio. Using

known “zero” ratio value is calculated.

Finally, using known polynomial coefficients …

gas concentration may be calculated with high

accuracy.