<2. WIRING AND INSTALLATION>
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IM 12A01A02-01E 8th Edition : Oct. 01, 2015-00
2.1 Installation site
The FLXA202/FLXA21 is weatherproof and can be installed both inside and outside. It should,
however, be installed as close as possible to the sensor to avoid long cable runs between the
instrument and sensor. When the pH sensor is used, the cable length including the sensor cable
should not exceed 20 meters (65.6 feet); 60 meters (197 feet) when using BA10 extension box
and WF10 cable.
For a conductivity sensor the cable run should not exceed 60 meters (197 feet). For dissolved
oxygen the sensor cable run should not exceed 30 meters (100 feet). For SENCOM pH/ORP the
sensor cable run should not exceed 20 meters (65.6 feet).
Select an installation site where the ambient temperature and humidity are within the limits of the
instrument specications (see chapter 2). If the instrument is installed outside and exposed to
direct sunlight, a sun shade hood should be used.
Ambient Operating Temperature: -20 to +55 ºC
Storage Temperature: -30 to +70 ºC
Humidity: 10 to 90% RH at 40ºC (Non-condensing)
Select an installation site that meets the following conditions.
• Mechanical vibrations and shocks are negligible
• No relay switch and power switch are installed close to the converter
• There is space for cable connection beneath the cable glands
• Not exposed to direct sunlight or severe weather conditions
• Maintenance is possible
• No corrosive atmosphere
• Water Protection: IP66, NEMA Type 4X (USA), Type 4X(Canada)
PH
SC
ISC
DO
SENCOM
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