Elgas DATCOM, Operating Instructions Manual

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1
Introduction
12
 protection of metrological parts by an official MID seal
 protection of selected non-metrological parts by the manufacturer's identification seal or by
the user's identification seal
Tampering device detection
 detection of the opening of the device with the possibility of sending an alarm (
Fig. 54
,
Fig. 55 )
 detection of removing metrological covers with the possibility of sending an alarm
 detection of an attempt to disturb the function of a mechanical indexer by an external
magnetic field
Device configuration and data protection (11.6)
 metrological switch - secured by the official MID seal, blocks the execution of operations
that directly modify the metrological characteristics of the instrument (eg measuring
accuracy, calibration of transducers, exchange of transducers, setting of converted volume
counters, etc.)
 service switch - is used to block parameter settings that do not directly affect the device's
metrological properties
 password security - optionally, you can use 50 passwords in 5 groups with different
hierarchy of authority to modify the device settings
 encryption - protection of transmitted data by encryption (symmetric AES encryption with
128-bit encryption key length) This option is optional and can be used for data
transmission by ELGAS protocol, ver.2 or CTR protocol. (par. 10.4)
All changes to device parameter settings, along with the worker's identification mark, are stored in
an indelible setting archive.
1.3 Versions of the Device
The gas volume corrector is manufactured and supplied in two types designated as ELCOR and
ELCOR plus , which differ in features, internal extension options and dimensions. The ELCOR and
ELCOR plus correctors are certified for commercial measurement according to 2014/32/EU.
The ELCOR
plus
corrector is also manufactured with an integrated mechanical indexer under the
name ELCOR plus Indexer.
In terms of design and most of the technical parameters, DATCOM and DATCOM
plus
are
identical with ELCOR and ELCOR plus; however, from the measurement point of view, they are
not approved gauges and are primarily intended as electronic data loggers. They cannot be used
for commercial measurement purposes.
1.3.1 ELCOR, DATCOM
The ELCOR (DATCOM) device is a single-channel battery-powered device with an optional
internal communication modem and with an interface for connecting a gas meter equipped with
an encoder. The device does not have an external power supply option.
Depending on the equipment, it may exist in the following versions:
a) Basic version:
- Single channel battery-powered corrector
- Six-key keypad
- Graphic or segment display
- 1 x digital pressure transducer EDT 96
- 1 x digital temperature transducer EDT 101
- 1 x pulse input for connecting a gas meter with LF pulse output