Instruction manual

SM425 INSTRUCTION MANUAL 3.0 INSTALLATION
3. Where the detector is mounted horizontally, the reference gas and calibration gas inlet should
face downward.
When the probe protector is used in the Zirconia Oxygen Analyzer with pressure compensation (-P
option), instrument air leaking from the probe protector may affect the measured value.
Figure 3-4 Mounting of detector with a probe protector
3.2 Installation of the Detector (SM425P-015)
3.2.1 Installation Location
This model detector is used with the High-temperature Probe Adapter (Model ZO21P-H) when the
temperature of sample gas exceeds 700°C.
The following should be taken into consideration when installing the detector:
1. Allow an easy and safe access to the detector for maintenance work.
2. The ambient temperature should not exceed 150°C. The terminal box should not be exposed to
radiant heat.
3. The environment should be clean and without any corrosive gas exposure.
4. Isolated from vibration.
5. The process gas should satisfy the specifications described in
Section 0.
3.2.2 Usage of the High-temperature Probe Adapter (Model ZO21P-H)
During normal operation, the surface temperature of the probe adapter should be between the dew point
of the process gas and 300°C to prevent ejector clogging, gasket deterioration, or bolt scoring.
If the dew point of the measured gas is not known, keep the probe adapter surface temperature within the
range of 200°C to 300°C.
46 42500001 REV A