14
Electrical connections
Pay attention to plant design!
Remove main plug and fuses. Before working on electrical circuits make sure that nobody can put the installation under power. Pay attention
to installation instructions for electric units:
• Power data, operation data
• Maximum transmission length
• Cable cross section, length
• Ambient temperature, mounting position
Wiring diagram, technical data for pulsers
Pulse transmitters type RV
• temperature max. -10...60 °C
• switching element Reed contact (potential-free)
• switching voltage max. 48 V DC/AC
• switch. current RV max. 50 mA (Ri 47
Ω
)
• switch. capacity RV max. 2 W
• static current nil
• pulse value see type plate
• use in hazard. areas not possible
• RV cable: 3 m
• polarity choice free
Pulse transmitters IN, INA
The intrinsic safety of the sensor is only assured if the sensor is
operated with an auto-protected feeder circuit according to the
description in the ATEX certificate PTB99 ATEX 2219X.
• temperature max. -10...60°C
• switching element slot initiator acc. to DIN 19234
• nominal voltage 8 V
• residual ripple <5 %
• switching current >4 mA (at 8V, 1 k
Ω
)
• static current <1 mA (at 8V, 1 k
Ω
)
• pulse value see type plate
• pay attention to polarity when connecting the plug
Connection:
Cable min. 2 x 0,35 mm
2
and 4...6 mm external diameter, on plug supplied with product.
Ancillary units
Some ancillary units require a programmation for pulse values or frequency (see their service instructions). Pulse values of the meters:
see type plates.
The frequency is calculated with the following formula:
Max. flow rate in liters/h
: 3600 = Frequency in Hz
Pulse value in liters
+/-
+/-
565078
Ri 47 Ohm
565287
4
17
565434
