Kamstrup Multical 402W2170A7251 ultrasonic flow meter *new*

Multical 402 is an ultrasonic heat energy meter primarily used for measuring district heating and/or cooling, for example in properties, housing associations, and industrial sites. It is designed to withstand demanding conditions, such as outdoor well installations, and features an IP54 waterproof enclosure. Two temperature sensors measure the flow and return water temperatures, and the heat consumption is calculated based on the temperature difference between them. The device supports remote reading via connections such as M-Bus or Wireless M-Bus (requires proper card module).

Note! The original device type is 402W0070A7251 (visible in the pictures), which does not include an M-Bus module with two pulse outputs. This module has been installed afterward and we have corrected a proper model number into the heading.

Meter technical details:

• Measuring unit:
  • Temperature measurement:
    • T1 inlet temperature:
      • 0,00…165,00°C
    • T2 outlet temperature:
      • 0,00…165,00°C
    • T1-T2 heat metering:
      • 0,01…165,00°K
  • Sensor connection:
    • For 2x wire Pt500 sensors
  • Measurement method:
    • Measures heating energy consumption
  • Insulation voltage:
    • 4kV
  • Operating temperature:
    • 5...+55°C
  • Environment class:
    • A
  • Differential range:
    • 3...150°C
  • Display:
    • LCD 8 digits (7,6mm height)
    • Rotatable (by installation) 90°
• Modules:
  • M-Bus + 2 pulse outputs (CE, CV) module
    • Type:
      • Open collector (OB)
    • Pulse length:
      • 32 or 100ms
    • External voltage:
      • 5-30V
    • Current:
      • 1...10mA
    • Residual voltage:
      • about 1V at 10mA
    • Electrical isolation:
      • 2kV
    • Max cable length:
      • 25m
  • Mains supply module:
    • 230VAC +15/-30 %, 50/60Hz
• Temperature sensors type:
  • 6S-00-0A0-219:
    • 2x Pt500 (EN 60 751) pocket sensors, 2-wire connection, 1,5m cable
  • Temperature range:
    • 10...+150°C
  • Differential range:
    • 3...140K
  • Power in temperature sensors:
    • 10μW RMS
• Flow sensor:
  • Min flow (qi):
    • 0,015m³/h
  • Nominal flow (qp):
    • 1,5m³/h
  • Max flow (qs):
    • 3m³/h
  • Pressure loss:
    • 0,22bar
  • Connection:
    • G1B (R3/4)
  • Length:
    • 130mm
• IP protection:
  • Calculator:
    • IP54
  • Flow sensor:
    • IP65

Download Kamstrup Multical 402-series ultrasonic flow meter technical datasheet