Software Activation
CF 51

Heat and Cooling Meter Calculator

CF 51

The CF 51 is a stand-alone calculator issued from the Itron CF Heat Meter Family and represents a technological step forward in the metering of thermal energy. Easy to handle, this calculator will turn your investment into benefits.


Heating, Cooling and Combined, return and supply positioning.

Multi-Functional Display

The multifunctional display facilitates easy reading, providing fast and clear access to the most important billing data. The display enables the diagnosis of failure alarms from a single glance. The LCD has a long life time and through a push button, you get easy access to each level of data.

Features and Benefits

  • Modular Design
  • Plug and Play Communication options boards
  • Bonus calculator
  • Max. demand manager
  • 2 wires
  • Simple to use
  • Easy reading
  • Upgrade with option boards


  • MID 2014/32/EU Module B+D
  • Env. Class E1, M1 acc. 2014/32/EU
  • OIML R75


Option Boards

The CF 51 is pre-equipped for communication. Different option boards can be plugged simply to the meter and start working automatically.

The following option boards are available:


CF 51 Energy Calculator

Metrology exceedsOIML, EN 1434
Temperature range0 … 180 °C
Temperature difference3 … 160 K
Temperature sensorsPt100 or Pt500, 2 wires
DisplayLCD – 7 digits
Back-up memoryEEPROM
Power supply (optional)6 or 12 year Lithium battery – 230 V main power supply or
power supply by M-Bus
Protection classIP64
Environmental classEnv. Class E1, M1 acc. 2014/32/EU
Ambient temperature5 … 55 °C
Pulse value (programmable)1 / 2.5 / 10 / 25 / 100 / 250 / 1000 L
Optical interfaceEN 13757 / M-Bus protocol

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