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The battery or mains powered SITRANS FUE950 is a universal custody transfer approved energy calculator. It is designed for use in hot water, chilled water and cooling/heating applications. The calculator has a modular construction which means that it can be fitted with optional output modules when it is ordered. These include a pulse output, pulse input, current output and an M-Bus add-on module. If needed, the necessary temperature sensor pair and pockets can be ordered along with the calculator.


  • MID directive approval for custody transfer for water energy metering
  • Cooling approval (according national German PTB K7.2 standard)
  • Suitable for 2 and 4 wire temperature sensor connection
  • Delivered with heat-/cooling approved PT500 sensor set (incl. sensor pockets)
  • Optical M-Bus  data reading in accordance with EN 1434
  • Instantaneous values for energy and volume flow
  • Flexible input / output option modules
  • Long battery lifetime (up to 16 years)
  • Option for 2 current outputs (4 … 20mA, passive)

Additional Info


Meassuring range
Qp ≤ 360000 m³/h (600000 GPM)
P ≤ 15000000 kW
EN1434 Class 3, typical ±(0.5 + 3K/ΔΘ) [%]
Input / output


1 Pulse of flowmeter (always included)

2 Temperature input as PT100/500,

2 or 4-wire (always included)

2 Pulse input (optional)



2 Pulse or status (optional)

1 M-Bus (optional)

1 RS 232 M-Bus protocol  (optional)

1 RS485 M-Bus protocol (optional)

2 current (4-20mA , passive) (optional)

8-digit LCD display with associated pictograms/symbols
IP54 (in accordance with IEC 529)
Power Supply
Battery (3.6V Lithium D-cell type)
230 V a.c.
24 V a.c.
Temperature input
From  -20 to 190 °C (-4 to 374 °F)
Ambient temperature
From  0 to 55 °C (32 to 131 °F)
MID (EN1434, heating) and PTB K7.2 (cooling)

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