Yokogawa 2-Wire Dual Channel Transmitter/Analyzer FLXA21 Instrukcja Użytkownika Pobierz pdf (Strona 29)

<2. WIRING AND INSTALLATION>

2-2

IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00

2.1 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 the pH sensor is used, the cable length including the sensor cable should not

exceed20meters(65.6feet).60meterswhenusingBA10extensionboxandWF10cable.

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

instrumentspecications(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95%RH(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

2.2 Removing the wiring cover

Beforeinstallingthisinstrument,openthefrontpanelandremovethewiringcovers,andthen

install the cable glands.

Removeallthewiringcovers.Theyarexedattheplacesmarkedwith○(circle)andΔ(triangle)

inFigure2.2.Becarefulnottodamagethepawlswhenremovingthecovers.

NOTE

Becarefulnottolosethewiringcoverscrews.

Wiring cover 1

(for the ﬁrst module)

Wiring cover 2

(for the second module)

Wiring cover 3

(for the power supply and grounding)

Figure 2.2 Wiring cover

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 245 246

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Yokogawa 2-Wire Dual Channel Transmitter/Analyzer FLXA21 Instrukcja Użytkownika Strona 29