LumaSense Technologies INNOVA 1316A-3 - Manual (Page 53)

Chapter 4
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BE6024-12 1316A-3 Multi Gas Monitor LumaSense Technologies A/S
Instruction Manual Page 53 of 96
4.1 Introduction
4.1.1 Factory calibration
Multi Gas Monitor –INNOVA 1316A-3 component tolerances result in small,
but relevant differences in measurement of a given gas concentration. The
IR source, pressure transducers, thermistors, band pass filters, and
detectors are subject to these variances. During the Type 1316A-3
manufacturing process, each unit is individually characterized.
Characterization results in a set of unique response characteristics for each
IR gas channel. These individual response curves are stored in the NDIR
module flash memory, and enable the Multi Gas Monitor 1316A-3 to
measure gas concentration accurately.
4.1.2 Field Calibration
The Multi Gas Monitor –INNOVA 1316A-3 is designed to be zero and span
stable in normal operation.
Zero calibration establishes the baseline for gas concentration
measurement. These responses vary depending on existing temperature
conditions (ambient, sample gas, and IR filters/detectors).
Span calibration compensates for the normal component drift that slowly
occurs over the life of the instrument.
4.2 Zero Calibration and O
2
Span Calibration
LumaSense recommends that zero calibration be performed as follows:
Whenever Zero Request is shown in the Status window see
figure 4.1
Immediately prior to taking any important set of gas concentration data.
Immediately prior to any span calibration.
Zero calibration is a recommended step in recovering from several types of
malfunctions.