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CALEC® ST III Advanced

Multifunctional heating and cooling calculator for applications in district heating, central heating, and building services engineering

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Medium

  • Thermal energy

Product Categories

  • Measure

Processes

  • Read out / Transfer

Application

  • Building services engineering
  • Local and district heating / district cooling
  • Processors

Countries

  • Germany
  • Switzerland
  • Singapore
  • Other countries

Features / Benefits

  • High-end multifunction computer
  • Precise energy measurement for all thermal applications in district heating and building services engineering
  • Enables smart metering: provides accurate meter readings remotely
  • Bidirectional energy measurement: Cooling and heating measurement in a single device
  • Pluggable arithmetic unit module
  • Multiple interfaces for building management systems: M-Bus, LON, Modbus, N2Open, BACnet MS/TP, KNX
  • Multiple interfaces for IoT solutions or wireless data collection: WM-Bus (OMS) or LoRaWAN
  • Fully modular and expandable at the factory or on-site
  • Flow data for water-glycol mixtures (predefined or available upon request)
  • Integrated power supply for flow meters
  • Metrological approval in accordance with Directive 2014/32/EU (MID) and PTB K7.2 (cold, combined hot/cold)
  • Easy installation: Plug and Play

Technical data

  • Compatible with all standard flow meters that use a pulse output
  • Plug-in computer module with LCD display
  • Power supply: 110/240 VAC – 12 W
  • For Pt100, Pt500, and Pt1000 temperature sensors, 2- or 4-wire, max. cable length 100 m (4-wire)
  • Fluid temperature: 0°C to 200°C (-40°C to 180°C for special heat transfer fluids)
  • Temperature range: 0 K to 190 K (certified for 3 K to 190 K; 1 K to 190 K according to EN 1434-4:2014)
  • 20-bit resolution, typically ±0.005 K
  • Selecting ad units
  • Data logger with up to 500 data points
  • Calculation cycle: 1 s
  • 24V or 3.6V power supply for flow meters
  • 2 pulse inputs / multiple digital outputs available
  • Up to 12 analog outputs
  • Up to 6 simultaneous communication interfaces: M-Bus, LON, BACnet, Modbus, KNX, N2 Open, Wireless M-Bus (OMS), LoRaWAN
  • Various heat transfer fluids pre-programmed at the factory (optional)
  • Metrological approval in accordance with Directive 2014/32/EU (MID) and PTB K 7.2

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