Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 61)

IM 11M13A01-02E 3-10
3.2.4 Mounting of the High-Temperature Detector
Note
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 measurement gas. It
should be heatproof and corrosion-proof. The parts, which should be supplied by the
user, are listed in Table 3.1.
Table 3.1 Accessories for mounting high-temperature probe adapter
Mounting flange specification Accessory name Number Note
JIS 5K 50 FF (equivalent) Gasket 1 Heatproof and corrosionproof
Bolt (M12 by 50) 4
Nut (M12) 4
Washer (for M12) 8
ANSI Class 150 RF (equivalent) Gasket 1 Heatproof and corrosionproof
Bolt (M16 by 60) 8
Nut (M16) 8
Washer (for M16) 16
T3.1E.EPS
A high-temperature detector should be mounted as follows:
(1) It is recommended to mount the detector vertically. When it is impossible due to the
physical arrangements and the detector is mounted horizontally, ensure that the probe
tip be placed no higher than the probe base.
(2) When mounting a high-temperature probe adapter, be sure to insert a gasket between
the flanges to prevent gas leakage. When the furnace pressure is negative, ensure that
there is no leakage of air into the furnace.
(3) When mounting the detector in a position other than vertical, the cable inlet should
face downward.
(4) When installing the detector in a low-temperature location such as in the open air,
cover the probe adapter including the ejector with a heat insulator (e.g. ceramic
wool) to keep it warm and to prevent condensation of drain on the ejector.
Wiring connection
Wiring connection
When using an SiC probe, mount the probe vertically
with an allowable tilt of
±
5 ؇ .
Mount the probe so that
the probe tip is not higher
than the probe base.
F3.07E.EPS
Figure 3.7 Mounting of the High-temperature Detector