Supplying Power To The Converter - YOKOGAWA EXAxtZR Instruction Manual

7.3 Supplying Power to the Converter

7-2
CAUTION
To avoid temperature changes around the sensor, it is recommended that (rather than
turning it on and off) power be continuously supplied to the Oxygen Analyzer if it is
used in an application where it is used periodically.
It is also recommended to flow a span gas (instrument air) beforehand.
Supply power to the converter. A display as in Figure 7.1, which indicates the detector's
sensor temperature, then appears. As the heat in the sensor increases, the temperature
gradually rises to 750 C. This takes about 20 minutes after the power is turned on,
depending somewhat on the ambient temperature and the measured gas temperature.
After the sensor temperature has stabilized at 750 C, the converter is in measurement
mode. The display panel then displays the oxygen concentration as in Figure 7.2. This is
called the basic panel display.
Tag:
319
4.00mA -Output1
4.00mA -Output2
Warmup
Figure 7.1 Sensor Display During
Warmup
Tag:
C
Hold
Figure 7.2 Measurement Mode Display
21.0
% O
17.43mA -Output1
17.43mA -Output2
2
IM 11M12A01-02E