10. Counter versions
The meter can be equipped with various counter versions:
Counter head S1
- This is the standard version with an 8-digit mechanical roller counter
- Provides universal read-off
- Can be rotated up to 355° about its axis
- Suitable for outdoor installation
- Designed for LF pulse generators which can plugged on from the
outside and which can be exchanged on site
Counter head S1V
- This has the same features as counter head S1
- The mechanical roller counter can be read off from the top
Counter head version II
- Provides universal read-off
- Can be rotated up to 355° about its axis
- Features a mechanical index drive pointing upwards in accordance
with EN 12261
- LF pulse generator which is fitted and which cannot be exchanged
on site
IMPORTANT! Version II is not suitable for outdoor installation.
11. Absolut Encoder S1
- This has the same features as counter head S1
- Can be used as main counter on gas meters
- Available as a top-mounted unit (transmitter unit) on meters with
mechanical index drive (counter head version II)
- The encoder is suitable for connection to a series-connected
additional device (volume corrector, datalogger or bus system) in
potentially explosive atmospheres (see table: Technical data). A
device connected to the terminal box must feature at least the
following approval as a related equipment for this:
[ EEx ia IIC ] for version with Namur interface
[ EEx ib IIC ] for version with SCR interface
Connection of the Absolut ENCODER S1 unit to the mechanical index drive of the
meter
- Connect the connector of the top-mounted unit to the mechanical index drive of counter
head version II.
- Use a locking screw to secure the encoder top-mounted unit against pulling out.
- The locking screw must be lead-sealed for applications requiring mandatory calibration.
- If you wish to synchronise the encoder with the counter reading of your operating meter
after installation or conversion, you will require the Instructions “Encoder synchronisation”
and a special tool. We recommend that you contact our ELSTER After-Sales Service in
such cases.
All rights reserved. Subject to technical modification. Page 9 of 13
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