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Elster - Model THEMIS-UNO EI6 (GSM/GPRS or NBIOT) -Smart Meter
The themis index provides features which go well beyond simple remote reading. The existing options (Time of Use and Block tariffs, load profiles, communications interval control, data logging, electronic temperature compensation, etc.) can be combined in such a way as to suit the needs of individual customers. A secure, over the air firmware update guarantees that the technology is future-proof and can be updated to meet new requirements if necessary.
themis®uno is available with GSM/GPRS or NBIOT WAN communication. This guarantees secure data exchange between the various communication partners. The method of secure authenticity and integrity of data and authorization of users is state of the art. Diaphragm gas meters BK-G..ETe with the themis®uno index meet the requirements of Italian specification UNI-TS 11291.
The integrated valve “Valve Ve” in the diaphragm gas meter allows the gas supply to be remotely connected and disconnected. This significantly reduces the costs and labour caused by local disconnection of the gas supply. To avoid gas being released in an unsafe installation, a smart test of the downstream installation is conducted before the valve is opened.
An integrated electronic temperature conversion system allows the volume to be converted to a base temperature even for residential supplies. The meter shows the converted volume in the display and transfers it to the appropriate data collection system.
Scope of application
- Residential and commercial gas meters (BK-G..ETeB, G1.6 to G25)
- Permitted gases: natural gas, town gas, propane, butane; gases of the first to third families pursuant to DIN EN 437:2003 (DVGW Code of Practice G260)
Degree of protection
- IP 65
Gas/ambient conditions
- Base temperature: 0 °C, 15 °C, 20 °C
- Gas temperature: -25°C to +55°C
- Ambient temperature: -25°C to +55°C
- Storage temperature: -25°C to +60°C
Temperature compensation
- Supports electronic temperature compensation
Statistic pressure compensation
- Supports statis electronic pressure compensation (optional)
Display and entry
- Clearly legible matrix display (LCD)
- Intuitive menu navigation using 3 keys (GPRS)
- Intuitive menu navigation using 2 keys (NBIOT)
Languages
- Italian, English, other languages available on request
Battery life
- GPRS: Typically 15 years
- NBIOT: Typically 20 years
*dependent on communication schedule and temperature profile - Longer service lives thanks to reduced communication frequency
- Battery can be replaced in the field without loss of data
Storage capacity
- The integrated data logging function records the supplied gas volume in conjunction with the current time and the corresponding tariff.
- Storage capacity
- Hourly consumption values: 4560 records (≙ 190 days)
- Daily consumption values: 190 records
- Monthly consumption values: 13 records
- Metrological log: 500 records
- Event log: 300 records
- Parameter monitor log: 50 records
- Supports daily transfer of hourly values
- Other intervals can be configured
Actuation of an integrated valve
- Safe switching of the valve (valve is not opened unless the installation is in a safe state)
- Local confirmation required by the press of a key/PIN
- Feedback on successful opening and closing
- Designed lifetime: 3000 cycles
- Max. operating pressure for valve operation: 100 mbar
- Pressure loss of BK-G4 according to EN 1359: < 2 mbar
- Maximum leakage rate in closed state: 1 l/h up to 100 mbar
Current approvals
- MID Class 1.5
- EN 1359
- ATEX: II -/3 G ic c IIB T4 Gc
- CE
- EMC
- RED