Differential Pressure Transmitter – Beck 985 Series

Features

  • Volume flow measurement
    The shape of the output signal can be switched from linear to square root using a jumper in order to measure the volume flow via a differential pressure.
  • Switching output (optional, not available with 2-wire version)
    To give a switch signal at an user defined pressure level the transmitter has an adjustable transistor switching output (NPN NO) with a maximum switching capacity of 30 VDC/100 mA. NPN NC or PNP NO / NC on request.
  • Display (optional, not available with 2-wire version)
    In addition to the analogue output signal the pressure value can be read out on a red LED-display in Pascal or other pressure units.
  • Measuring method
    Piezoresistive pressure transducer.
  • Mounting position
    Can be mounted in any position. The zero offset calibration eliminates any possible position error.
Enquiry

Differential Pressure Transmitter 985 from -50 Pa to 1 bar.

The differential pressure transmitters of the 985 series are used to measure differential pressure, overpressure and vacuum. They provide up to 8 pressure ranges and 2 output signals, which are easily selectable by jumper or rotary selector switch. Monitoring of gaseous, non-combustible and non-aggressive media.

Applications

  • Building automation and air conditioning systems
  • Overpressure measurement in clean rooms and laboratories
  • Measurement of constant pressure in VAV applications
  • Dynamic filter and ventilator monitoring

Specification

985M 2-wire with manual offset calibration
Setting ranges Depending on type between -100 Pa and 1 bar
Temperature range Working and storage temperature from –20°C to +70°C
Process connection Hose connection with 4 / 6 mm outer diameter
Supply voltage 18 to 30 VDC
Output signal 4 – 20 mA
Electrical connection Plug-in terminals for wires and strands up to 1.5 mm2 or
circular connectors M12 / 4-pole
Protection class IP65 acc. to EN 60529
985M 3-wire with automatic offset calibration
Setting ranges Depending on type between -100 Pa and 1 bar
Temperature range Working and storage temperature from –20°C to +70°C
Process connection Hose connection with 4 / 6 mm outer diameter
Supply voltage 18 to 30 VDC
Output signal 0 – 10 V
4 – 20 mA
Electrical connection Plug-in terminals for wires and strands up to 1.5 mm2 or
circular connectors M12 / 4-pole
Protection class IP65 acc. to EN 60529
985A 3-wire with automatic offset calibration
Setting ranges Depending on type between -100 Pa and 1 bar
Temperature range Working and storage temperature from –10°C to +50°C
Process connection Hose connection with 4 / 6 mm outer diameter
Supply voltage 18 to 30 VDC
Output signal 0 – 10 V
4 – 20 mA
Electrical connection Plug-in terminals for wires and strands up to 1.5 mm2 or
circular connectors M12 / 4-pole
Protection class IP65 acc. to EN 60529
985Q 3-wire with automatic offset calibration
Setting ranges Depending on type between -100 Pa and 1 bar
Temperature range Working and storage temperature from –10°C to +50°C
Process connection Hose connection with 4 / 6 mm outer diameter
Supply voltage 18 to 30 VDC
Output signal 0 – 10 V
4 – 20 mA
Electrical connection Plug-in terminals for wires and strands up to 1.5 mm2 or
circular connectors M12 / 4-pole
Protection class IP65 acc. to EN 60529

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Beck 985 Series Differential Pressure Transmitter-DpstarGroup

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