MODEL 300 COMBUSTION ANALYZER
Instruction 24-9223 4-5
4.2 AMBIENT TEMPERATURE CALIBRATION - R24
This procedure calibrates the combustion analyzer’s ambient temperature
transducer (component D7, mounted on the printed circuit board) to room
temperature, using the R24 potentioneter (see Fig. 4-6).
Equipment Needed (See Section 6 for Part Numbers)
• Thermometer, precision grade, 0 to 220°F (–20 to 150°C)
• Potentiometer Adjustment Tool
Procedure
1. Remove control panel per Section 4.1.
2. Remove thermocouple plug from rear of analyzer (Fig. 4-5).
3. Ensure that the ambient (room) temperature is between 32° and 122°F
(0° and 50°C); otherwise, an E*AM error will occur at the conclusion of
the calibration cycle in Step 4 of this procedure.
Figure 4-5. Ambient Temperature Calibration Setup
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