YOKOGAWA ZR22S, User Manual

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<3. Installation>
3-12
IM 11M13A01-02E
3.3 Installation of ZR402G Converter
CAUTION
Converter (Model ZR402G) must not be located in hazardous area.
3.3.1 Installation Location
The following should be taken into consideration when installing the converter:
(1) Readability of the indicated values of oxygen concentration or messages on the converter
display. Easy and safe access to the converter for operating keys on the panel and for
checking and maintenance work.
(2) An ambient temperature of not more than 55 °C and little change in temperature
(recommended within 15 °C in a day).
(3) The normal ambient humidity (recommended between 40 to 75% RH) and without any
corrosive gases.
(4) No vibration.
(5) Near to the detector.
(6) Not in direct rays of the sun. If the sun shines on the converter, prepare the hood (/ H) or
other appropriate sunshade.
(7) Non-hazardous location.
3.3.2 Mounting of the Converter
The converter can be mounted on a pipe (nominal JIS 50A: O.D. 60.5 mm), a wall or a panel. The
converter can be mounted at an angle to the vertical, however, it is recommended to mount it on
a vertical plane.
Mount the converter as follows.
<
Pipe Mounting >
(1) Prepare a vertical pipe of sufficient strength (nominal JIS 50A: O.D. 60.5 mm) for mounting
the converter. (Converter weighs approximately 6 kg.)
(2) Mount the converter on the pipe. Fix it firmly on the pipe in the procedure described in Figure 3.9.
A pipe to be mounted (nominal JIS 50A)
Bracket
Nut
Washer
Bolt
*Bolt
*Washer
*Fitting
* Note: These fittings are attached to the converter
when it is delivered.
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
Mounting procedure
1. Put four bolts in the holes on the fitting.
2. Clamp the pipe with the fitting and a bracket,
with the four bolts passing through the bracket holes.
3. Secure the fitting and the bracket tightly to the pipe with
four washers and nuts.
Figure 3.10 Pipe Mounting