THEMIS®EVO EI5.02 (ESMR5)

Product Details
The themis®evo index variant EI5.02 has been specifically developed for the Dutch market and complies with the requirements of ESMR5 (Enexis Smart Meter Requirements). This is an integrated electronic index with a single key controlled LCD matrix display to act as the user interface. The index has a maximum battery life of 20 years, depending on meter usage, however the battery is replaceable in the field. The themis®evo equipped gas meter connects to an electricity meter using a wireless M-Bus short-range interface (868 MHz) complying with ESMR5. As well as the gas meter reporting the measured volume at regular intervals to the electricity meter, events and alarm messages are also sent on occurrence. Protective measures to ensure integrity, confidentiality and authenticity during data exchange between the communication partners is state of the art. A secure, over the air firmware update guarantees that the technology is future-proof and can be updated to meet new requirements if necessary. The display of the volume at base conditions is a specific feature of the themis®evo index. Using an integrated electronic temperature measuring system and a fixed value for the pressure, the measured volume is converted into a volume at base conditions (base temperature Tb = 0°C, base pressure pb = 1013.25 hPa), shown on the display, saved in the index and transferred to communication partners.

Short Range Communication
• Wireless M-Bus (868 MHz) compliant with Enexis Smart Meter Requirements (ESMR5) based on EN 13757
• Integrated antenna
• Communication profile  
• Wireless M-Bus\, T2 mode according to EN 13757-4
• Hourly transfer of the data (e.g. current hourly value of the volume at base conditions with time stamp and the last 3 hourly values) to the electricity meter
• Bidirectional communication once per day (e.g. for time synchronization)
• Push message (e.g. if alarms occur)
• Wireless M-Bus\, C1 mode according to EN 13757-4
• Transfer of the current volume and the time stamp every 5 minutes

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)  

Enclosure  
• IP 54 to DIN EN 60529  

Gas/Ambient conditions  
• Gas temperature range: -25°C to +55°C
• Ambient temperature range: -25°C to +55°C
• Storage temperature range: -25°C to +60°C  

Indication of volume at base conditions  
• Calculated conversion to the volume at base conditions (Tb\, pb) on the basis of a fixed value psp for the pressure during volume measurement
• Base temperature Tb: 273.15K ≙ 0°C
• Base pressure pb: 1013.25 hPa • Fixed value psp: 1043.25 hPa
   
User interface  
• LCD display
• Intuitive menu navigation using a single key (e.g. for the installer or end user)  

Languages  
• Dutch
• Other language kits possible on request  

Battery life  
• Up to 20 years\, depending on usage profile
• If required\, battery can be replaced in the field without loss of data  

Data logging in the index  
• Integrated data logging function records the gas volume at base conditions in conjunction with the current time and temperature

Storage capacity:
• Hourly consumption values: 1224 records (≙ 51 days)
• Permanent (quasi metrological) logbook: 285 records • First-In-First-Out (FIFO) logbook: 285 records  

Current approvals  
• MID Class 1.5
• EN 1359
• CE
• EMC
• R&TTE