Waterpilot FMX21 Electrical connection
Endress+Hauser 23
6 Electrical connection
L
WARNING
Electrical safety is compromised by an incorrect connection!
‣
When using the measuring device in a hazardous area, the relevant national standards
and guidelines as well as the Safety Instructions (XAs) or installation or control
drawings (ZDs) must be adhered to. All data relating to explosion protection can be
found in separate documentation which is available on request. This documentation is
supplied with the devices as standard → 7
6.1 Connecting the device
L
WARNING
Electrical safety is compromised by an incorrect connection!
‣
The supply voltage must match the supply voltage specified on the nameplate → 13
‣
Switch off the supply voltage before connecting the device.
‣
The cable must end in a dry room or a suitable terminal box. The IP66/IP67 terminal
box with GORE-TEX® filter from Endress+Hauser → 20 is suitable for outdoor
installation.
‣
Connect the device in accordance with the following diagrams. Reverse polarity
protection is integrated into the Waterpilot FMX21 and the TMT182 temperature head
transmitter. Changing the polarities will not result in the destruction of the devices.
‣
A suitable circuit breaker should be provided for the device in accordance with IEC/EN
61010.
6.1.1 Waterpilot with Pt100
RD
BK
RD
BK
WH
YE BU
BR
a
A B
e
)
)
)
)
c
c
d
d
b
b
a
FMX21
FMX21
A0019441
A Waterpilot FMX21
B Waterpilot FMX21 with Pt100 (not for use in hazardous areas); option "NB", Product Configurator order code
for "Accessories"
a Not for the FMX21 with external diameter of 29 mm (1.14 in)
b 10.5 to 30 V DC (hazardous area), 10.5 to 35 V DC
c 4...20 mA
d Resistance (R
L
)
e Pt100
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