Wiring; Connection Recommendation - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Wiring

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38
4 Wiring
Caution!
Before connecting the supply voltage, note the following:
• The supply voltage must match that specified on the nameplate (1).
• Switch off the supply voltage before connecting the device.
• Connect the potential equalization line to the ground terminal on the sensor.
Note!
• When using the probe in potentially explosive atmospheres, observe the corresponding national
standards and the information in the safety instructions (XA).
• Use the specified cable gland only.
4.1

Connection recommendation

4.1.1 Potential equalization
Connect the potential equalization line to the outer ground terminal of the housing (T13, F13, F16,
F17).
For the stainless steel housing F15, the ground terminal (depending on the version) can also be
located in the housing.
For additional safety instructions, refer to the separate documentation for applications in potentially
explosive atmospheres.
4.1.2 Electromagnetic compatibility (EMC)
Interference emission in accordance with EN 61326, Class B electrical device, interference
immunity in accordance with EN 61326 appendix A (industrial use) and NAMUR EMC
recommendation NE 21 (EMC).
4.1.3 Cable specification
The electronic inserts can be connected using the usual commercial instrument cables.
If shielded instrument cables are used, apply the shield on both sides.
FEI..
M 20 x 1.5
(ø0.2...0.35 in)
max. 2.5 mm²
(max. AWG 14)
max. 4 mm²
ø5...9 mm
(max. AWG 12)
Liquicap M FMI51, FMI52
3 mm
(1/8 in)
L00–FTI5xxxx–04–05–xx–xx–011
Endress+Hauser