Elster-Instromet
6
73021678d © Elster GmbH • All rights reserved • Subject to technical modication
1. Staff
These instructions are aimed at staff who have adequate specialist and technical
knowledge (in Germany, for instance, in accordance with DVGW Codes of Practice
492 and 495 or comparable technical regulations) on the basis of their training and
experience in the sector of energy and gas distribution.
This product is intended
for calibratable volumetric metering of
- ammable gases: natural gas/town gas/propane/ butane,
- non-ammable gases: air/nitrogen/inert gases,
- and is suitable for use in potentially explosive atmospheres of Category 2
(Zone 1) of Class EX II 2 G c IIC.
Other elds of application / media on request.
This product is not intended for
- metering of aggressive gases, e.g. biogases or sewage gases, oxygen,
acetylene, hydrogen.
2. Legal Declarations
- Declaration of Conformity – see Annex C
- Period of validity of calibration – this is based on the regulations of the country
concerned, in which the rotary gas meter will be used.
- The calibration of rotary gas meters is only valid for the period of validity of
calibration. Once this has elapsed, rotary gas meters may no longer be used for
purposes which are subject to obligatory calibration.
3. Intended Use and Field of Application
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