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Differential Pressure Transmitter 985

Introducing the 985 Series Differential Pressure Transmitters, the ultimate solution for precise measurements of differential pressure, overpressure, and vacuum. Our advanced transmitters offer a versatile selection of up to 8 pressure ranges and 2 output signals, conveniently adjustable via a jumper or rotary selector switch. Ideal for monitoring gaseous, non-combustible, and non-aggressive media. With cutting-edge technology and reliable performance, these transmitters are the go-to choice for various industrial applications. Ensure accurate and efficient pressure monitoring with the 985 Series Differential Pressure Transmitters.

Differential Pressure Transmitter 985 Product Parameters

  • Pressure Ranges: Up to 8 selectable pressure ranges, adjustable for various applications.
  • Output Signal: Selectable between 0-10 Volt and 4-20 mA for the 3-wire version; the 2-wire version offers a 4-20 mA output signal.
    Accuracy: Includes easy offset calibration and automated zero offset compensation for accuracy.
  • Electrical Connections: Configurable for either a 2-wire or 3-wire system.
  • Media Compatibility: Suitable for monitoring gaseous, non-combustible, and non-aggressive media.
  • Special Features: Includes configurable response time, volume flow measurement capability, optional switching output and display, and can be mounted in any position.


Product Highlights

The Differential Pressure Transmitter 985 is a versatile instrument designed for accurate pressure measurements. It comes in 2-wire and 3-wire models, with manual or automatic offset calibration, respectively. The setting ranges vary depending on the type, from -100 Pa to 1 bar. The temperature range for the 2-wire model is -20°C to +70°C, while the 3-wire models operate from -10°C to +50°C. The process connection utilises a hose connection with 4/6 mm outer diameter for easy installation. The transmitter requires a supply voltage of 18 to 30 VDC and offers an output signal of either 4-20 mA or 0-10 V, making it compatible with different systems. The electrical connection options include plug-in terminals for wires and strands up to 1.5 mm2 or circular connectors M12/4-pole. Additionally, with a protection class of IP65 according to EN 60529, the Differential Pressure Transmitter 985 ensures durability and resilience in challenging conditions.


  • 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

To download the latest datasheet click here: Differential Pressure Transmitter 985

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