Pulse Generators - Elster RABO Manual De Instrucciones

12. Pulse Generators

LF pulse generators (Type IN-S) or Wiegand pulse generators (Type IN-W) may be
plugged onto the side of the index cover for volume pulse output to external devices
(e.g. a volume corrector).
Fit the pulse generator (if required) as follows:
- Slide both guides of the pulse generator into
the guide slot on the index cover until the guides can
be heard to engage.
- Assign the terminals on the plug in accordance with
the pin assignment on the meter / pulse generator.
- Optional you can use HF pulse generators for higher frequencies (Type A1K).
HF pulse generators are screwed pressure-tight into the housing cover. The pulse
values of the fitted pulse generators are stated on the meter.
- Assign the terminals on the plug in accordance with the pin assignment
on the unit.
- The terminal assignment of the pulse generator is 5(+) and 6(-). The assignment
refers to the plan view of the pin contacts of the fitted flange connector.
- Use a screened cable to the external device (in accordance with DIN
60079-14).
Warning! All pulse generators are intrinsically safe and may be connected only to
intrinsically safe circuits if used in potentially explosive atmospheres. The safety
barriers must comply with the requirements of ignition protection EEx ib IIC (see also
Marking in Annex A). In addition, the device must not be installed on external sources
of high or low temperatures whose temperature would result in a higher or lower
ambient temperature for the device than the permitted ambient temperature range
Tamb = -40°C to +70°C.
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