Instruction manual

SM425 INSTRUCTION MANUAL 3.0 INSTALLATION
3.2.3 Probe Insertion Port
A high-temperature detector consists of a SM425P-015 Detector and ZO21P High-temperature Probe
Adapter. When forming the probe insertion port, the following should be taken into consideration:
1. If the probe is made of silicon carbide (SiC), the probe port should be formed so the probe can be
mounted vertically (no more than a 5° tilt).
2. If the probe is made of stainless steel and the probe adapter is to be mounted horizontally, the
probe port should be formed so the probe tip will not be higher than the probe base.
Figure 3-5 illustrates examples of the probe insertion port.
Figure 3-5 Examples of the probe insertion port
3.2.4 Mounting of the High-Temperature Detector
Ceramic (zirconia) is used in the sensor (cell) portion on the detector probe tip. Care should be taken not
to drop the detector during installation.
The same applies to a probe made of silicon carbide (SiC).
A gasket should be used on the flange surface to prevent gas leakage. The gasket material should be
selected depending on the characteristics of the process gas. It should be heatproof and corrosion-proof.
The parts, which should be supplied by the user, are listed in Table 3-1.
48 42500001 REV A