Elgas EQZ, Инструкция по установке и эксплуатации, Страница: 7 / 12

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The intrinsic safety can only be guaranteed with the correct operating materials,
together with the written confirmation/proof of intrinsic safety and the verified
following maximum values.
2.5 Electrical connection of pulse generator

The electrical connections for the two pulse generators NF Reed-contact and MF
Namur Sensor in the register area is made possible by a 6-pole circular plug.

The NF Reed-contact and MF Namur Sensor (if installed) are indicated by a sticker,
which is positioned on the outer casing of the measuring insert.
Pulse generator sticker for NF-Reed contact (Low
frequency) Pulse generator sticker for MF-Namur Sensor (Middle
frequency)

In addition to the type description on each sticker, information about the number of
pulses per m3 (pulse value), the Ex-identification number of the pulse generator and
the permissible maximum electrical values are displayed.

The cable is correctly connected when the circular plug is inserted into the socket
and is fastened by tightening the coupling ring.

The NF Reed-contact IN-Z61 has its own direct connection point and is indicated on
the sensor. The plug is pushed as far into the opening of the housing, until the
connecting point engages. With an additional pin, the plug is secured before
removing it again. The pin has a diagonal hole in it through which wire is placed to
seal the pulse generator.

Only the original supplied plug connection may be used for this purpose.
3 Commissioning

Fill the measuring section slowly by opening valves gradually (at least 1 minute) until
the operating pressure is reached.

Note: Pressure surges (shocks) and / or excessive start-up flowrates may damage
the meter.
U
max
= 25 VDC
I
max
= 50 mA
P
max
= 250 mW
f
max
= 0.18 Hz
Ci
effective internal capacity
= negligibly small
Li
effective internal inductivity
= negligibly small