Manual

<1. Wiring and Installation>

IM 12A01A02-12E 4th Edition : Sep. 3, 2013-00

1. Wiring and Installation

Open the cover and remove the plastic inserts covering the modules. They will be reinstalled

after the wiring is completed.

1.1 Installation site

The 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 a 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 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

• AmbientOperatingTemperature:-20to+55°C

Humidity: 10 to 95% RH (Non-condensing)

• WaterProtection:IP66(exceptCanada),Type4X(exceptCanada),Type3S/4X(Canada)

Select an installation site where the ambient temperature and humidity are within the limits of the

instrumentspecications(seechapter2.1intheinstructionmanual).Iftheinstrumentisinstalled

outside and exposed to direct sunlight, a sun shade hood should be used.

TheFLXA21canbemountedonawall,pipeorpanelwhenthemountingkitisordered*this

ishowwewillkeeptheunitinstock*.Fordimensionalinformationpleaserefertosection3.6

Mounting Methods in the instruction manual.

CAUTION

See Apendix

Media No. IM 12A01A02-12E 4th Edition : Sep. 2013 (YK)