Instruction manual
SM425 INSTRUCTION MANUAL    3.0 INSTALLATION 
50 42500001 REV A 
3.3 Installation of the Converter 
3.3.1 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. 
2.  Easy and safe access to the converter during normal operation and maintenance work. 
3.  An ambient temperature of not more than 55°C and stable to within 15°C a day. 
4.  The normal ambient humidity (recommended between 40 to 75% RH) and without any corrosive 
gases. 
5. No vibration. 
6.  Close proximity to the detector. 
7.  A hood (/H) or other appropriate sunshade is required if installed outdoors. The converter must 
not be installed in direct sunlight. 
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.  Use 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 3-7. 










