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RVG manual English, German, French, Italian, Spanish, Dutch, 02 ...

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You can use HF pulse generators for higher frequencies<br />

(Type A1K) (optional). HF pulse generators are screwed<br />

pressure-tight into the housing cover. However, the<br />

connection plug can be turned.<br />

– Assign the terminals on the plug in accordance with<br />

the pin assignment on the unit.<br />

– Use a screened cable to the external device (in<br />

accordance with DIN 60079-14).<br />

© Elster GmbH · All rights reserved · Subject to technical modification<br />

Coupler socket<br />

Flange connector<br />

A1K<br />

Pulse generators for subsequent installation are also available.<br />

Elster-Instromet<br />

HF pulse generators (Type A1K) can, however, be fitted only by the Elster-Instromet<br />

Customer Service (Tel. +49 (0)6134-605-0 / -346). By contrast, you can connect the plug<br />

yourself, as described above.<br />

Type <strong>RVG</strong>-ST:<br />

Elster-Instromet rotary gas meters of Type <strong>RVG</strong>-ST can be equipped with one or two low<br />

frequency (LF) pulse generators. In addition, the unit can also be equipped with a monitoring<br />

contact (PCM) for checking open circuits or manipulation.<br />

In addition, a high frequency (HF) pulse generator (optional) is also available. The pulse values<br />

of the fitted pulse generators are stated on the meter.<br />

The pin assignments of the pulse generators are stated on an adhesive label on the unit.<br />

These assignments show the plan view of the pin contacts of the fitted flange connector or<br />

the view of the soldered connection terminals of the coupler socket.<br />

Figure 9: Coupler socket and flange connector for Type <strong>RVG</strong>-ST<br />

Warning! All pulse generators are intrinsically safe and may be connected only to intrinsically<br />

safe circuits if used in potentially explosive atmospheres. The safety barriers must comply<br />

with the requirements of ignition protection EEx ib IIC (see also Marking in Annex A).<br />

17<br />

<strong>English</strong>

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