Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Updated:2025-03-13
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User's Manual Datasheet
Measuring and Monitoring differential Pressure in Clean Rooms, Food and Pharma
Features
Fast response time
Different measuring ranges from ± 10 to ± 500 Pa
3 Analog, Ethernet or Modbus RTU outputs
Analog input, freely scalable
Relay
Choice of two different sensor technologies (thermal measuring method and diaphragm sensor) The new differential pressure transmitters PF4 and PF5 with two different sensor technologies (thermal measuring method in PF4 and diaphragm sensor in PF5) consistently produce perfect measurement results thanks to an integrated ambient pressure sensor. Both sensors are equipped with automatic zero point compensation
PF4
The thermal measurement technique of the PF4 transmitter allows exact measurements in the smallest of ranges. The differential pressure transmitter enables Rotronic customers to measure a further important parameter in addition to humidity, temperature, low dew point and CO2.
PF5
The membrane measurement technique of the PF5 transmitter allows exact measurements in the smallest of ranges. The differential pressure transmitter enables Rotronic customers to measure a further important parameter in addition to humidity, temperature, low dew point and CO2.
Specifications
| PF4 | PF5 | |
| Type | Thermal Measuring Method | diaphragm sensor |
| Pressure Resistance | 5 bar | 0.7 bar |
| Ambient pressure dependence | Compensated | None |
| Accuracy | ±1.0 %FSS | |
| Response Time | < 1 s, typical | |
| Measurement Range | ±10 Pa (PF4 only) / ±25 Pa / ±50 Pa / ±100 Pa / ±250 Pa / ±500 Pa | |
| Operating Range | -5…60 °C / 0…100 %RH, non-condensing | |
| Output Signals | 3 analog outputs, freely configurablel 3/4 wire: 0(4)…20mA, 0…1/5/10 VDC | |
| Relay / Switch Output | 1 relay potential-free change-over switch (NC - COM - NO) | |
| Digital Communication | Ethernet (TCP) / RS-485 (Modbus RTU) | |
| Analog Input | 1, freely configurable (0…10 V or 0…24 mA) | |
| Housing Material | ABS | |
| Dimension | 129 mm x 72 mm x 45 mm | |
Suitable Applications
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