YOKOGAWA ZO21DW, User Manual, Page: 13 / 39

<2. INSTALLATION>
2-2
IM 11M03A02-00E
100 mm
100 mm
Eight-hole flange
(vertical)
Bounds of the probe
insertion hole location
Flange matches
the detector specifiions
(horizontal)
Greater than
∅ 52 mm
F2.1E.ai
Note : Make sure the reference gas outlet of the detector is not blocked by the gasket on the flange surface.
Figure 2.1 Example of probe insertion hole
2.3 Detector Installation
CAUTION
The cell (sensor) at the tip of the detector is made of ceramic (zirconia). Do not drop the detector,
as inpact will damage it.
The gasket should be used on the flange surface to prevent gas leakage. The gasket material
should be heatproof and corrosion-proof.
The following should be taken into consideration when mounting the detector :
(1) Make sure the cell mounting screws (four pcs.) have not come loose.
(2) In a case where the detector is attached horizontally, the cable lead-in hole should face
downward.