42/24-10 EN Rev. 9 Chapter 8: Gas Analyzer Calibration 8-A-7
Test Gas Supply Control for Automatic Calibration, continued
1 Analyzer Module,
External Gas Supply
with 1 Solenoid
To calibrate analyzer modules with simplified calibration procedures:
• Caldos27 with single-point calibration
• Magnos206 with single-point calibration
• Limas11 with calibration cells
• Uras26 with calibration cells
• Oxygen Sensor
The external solenoid is controlled via a digital output on the electronics module
(Digital output DO4 on Digital I/O Module – “Status signals/ Externally controlled
calibration” standard function block application).
Figure 8-A-4
System bus
Sample gas
Tes t g as
Analyzer
module
Electronics
module
Digital
output
1 Analyzer Module,
External Gas Supply
with 3 Solenoids
To calibrate all analyzer modules with zero and span gas even without an integral
gas module.
The external solenoids are controlled via digital outputs on the electronics module
(Digital outputs DO1, DO2 and DO3 on Digital I/O Module – “Calibration control”
standard function block application).
Figure 8-A-5
Sample gas
Zero gas
Span gas
Analyzer
module
Electronics
module
System bus
Digital
outputs
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