PF4 differential pressure transmitter ROTRONIC


Šifra: PF4

Po naročilu. Pošljite povpraševanje.

  • accuracy: ±1 hPa (0 … 65 °C; 950 … 1100 hPa) max.
  • housing: ABS
  • Protection class: IP 65 (without Ethernet)
  • mounting: wall-mounted
  • Display: colour TFT 27 x 40 mm
  • dimensions: 129 mm x 72 mm x 45 mm
  • Application range: -5 … +60 °C/0 … 100% RH, non-condensing
  • T63 response time: < 1 s, typical
  • Sensor type: membrane sensor
  • freely configurable analogue signals
  • excellent moisture and dust resistance in the working environment


PF4 is a differential pressure transducer. It uses the “thermal measurement” method, while PF5 uses the “diaphragm sensor” method.

Thanks to the integrated external pressure sensor, the Nova PF4 and PF5 consistently produce measurement results that are perfect.

Both sensors are equipped with automatic zero point compensation. In PF4 this is done automatically every 5 ms in the sensor, in PF5 the automatic compensation is done by an internal valve and programming in HW4.

Both instruments can also be ordered with a relative humidity sensor connector
or with a B4 connector for temperature sensors

The new colour display allows users to display up to 4 lines and up to 3 measured values.

All analogue outputs, inputs and alarm settings can be changed or customised via an intuitive menu. Thanks to analogue and digital communication, both types of devices can be easily integrated into any monitoring system.

FDA21 CFR Part 11 and GAMP compliant.

PF4 features

  • Accuracy: ±1 hPa (0 … 65 °C; 950 … 1100 hPa) max.
  • application range: -5 … +60 °C/0 … 100% RH/300 … 1100 hPa
  • measuring ranges: ±10 Pa/±25 Pa/±50 Pa/±100 Pa/±250 Pa/±500 Pa
  • T63 response time: < 1 s, typical
  • freely configurable analogue signals
  • excellent moisture and dust resistance in the working environment



  • 1 to 3 analogue outputs and 1 analogue input
  • network compatible (Ethernet)
  • TCP or RTU, supporting Modbus, via RS485
  • potential-free relay with switch contacts
  • Sensors flow or membrane sensors differential pressure

For use with

The set includes

  • product qualification
  • short instructions for use
  • screws and studs for fixing



Scope of application

  • HVAC
  • heating, ventilation, air conditioning
  • food industry
  • pharmaceuticals and clean rooms.


See the Documentation tab for more information.



You are invited to view the articles “Monitoring in HVAC applications and ventilation control”.


Other designations: PF 4, PF-4, PF_4


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