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24 Model 7500 Instruction Manual
Teledyne Analytical Instruments
4. OPERATION
4.1 Preparation for operation
(1) Check of gas sampling tube, exhaust tube and wiring
Check that the pipes are correctly connected to the gas sampling port and drain port.
Check that the analyzer is correctly wired as specied.
4.2 Warm-up operation and regular operation
(1) Operation procedure
1. Turn ON the power switch at the left of the front panel.
In one or two seconds, the measurement screen will appear at the front panel.
2. About 2 hour warm-up operation
About 2 hours are needed until the operating performance is stabilized. Warm-up
operation should be continued with the power ON.
3. Setting of various set values
Set required set values according to Chapter 6, “Setting and calibration”.
4. Zero and span calibration
Perform zero calibration and span calibration after warm-up operation.
See Chapter 6.9, “Calibration”.
5. Introduction and measurement of measured gas
Start measurement by introducing measured gas into the analyzer.
Note: While in warm-up operation, the concentration reading may be beyond the upper limit of the range
(range-over) or below the lower limit. But this is not an error.