Yokogawa IR400 - Manual (Page 32)

4 - 1
IM 11G02N01-01E
4.1 Preparation for operation
(1) Tube and wiring check
Double-check if tubes of the gas sampling and exhaust ports are correctly connected.
Double-check for proper wiring.
4.2 Warm-up operation and regular operation
(1) Operation procedure
1) Turn ON the power switch on the front panel of the analyzer unit.
The measurement screen appears on the front display panel in 1 or 2 seconds.
2) Wait for about 4 hours until the instrument is warmed up.
About 4 hours are required until the instrument allows accurate measurement.
Note) When in warm-up, the concentration reading may be beyond.
upper limit of range or
lower limit of range.
But, it is not an error.
3) Setting of various set values
Perform the various settings according to “Chapter 6. Setting and Calibration”.
4) Zero calibration and span calibration
Perform zero calibration and span calibration after warm-up operation.
Refer to “Chapter 6.9. Calibration”.
5) Introduction and measurement of measuring gas
Introduce the measuring gas into the analyzer unit before starting measurement.
4. OPERATION