Differential Pressure Transmitters
PF4/5 Differential-Pressure Transmitter
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. In the PF4, this is carried out automatically every 5 ms in the sensor, in the PF5 automatic compensation is performed with the help of an internal valve and programming in the HW4 V3.9.0. Both instruments can also be ordered with a HygroClip2 connection or a B4 connector for PT100. The new color display allows users to display up to 4 lines and a maximum of 3 measured values. All analog outputs, inputs and alarm settings can be changed via the intuitive menu. Thanks to analog and digital communication, both device types can be integrated easily into any monitoring system.
Advantages
- Flow or diaphragm differential pressure sensors
- 1 to 3 analog outputs, 1 analog input
- Network-compatible (Ethernet)
- Modbus capable TCP or RTU via RS485
- Potential-free relay with changeover contacts
Use cases
- Heating, ventilation, air-conditioning technology
- food industry
- pharmaceutical sector
- clean rooms
Long-term stability | PF4: ±0.05 % FSS/year (typ.) / ±0.1 % FSS/year (max.) PF5: ±0.25 % FSS (typ.) per year @ ±250 and ±500 Pa measurement range ±0.3125 % FSS (typ.) per year @ ±100 Pa measurement range ±0.625 % FSS (typ.) per year @ ±50 Pa measurement range ±1.25 % FSS (typ. |
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Response time t 63 | < 1 s, typical |
Dimensions | 129 mm x 72 mm x 45 mm |
Display type | Color TFT display |
Fire protection class | Complies UL94-HB |
Min. / max. load voltage / current signal | > 1 kΩ/V (voltage output) / < 500 Ω (current output) |
Weight | 243 g with display & Ethernet |
Housing | ABS |
Power supply | 18…48 VDC / 16…35 VAC, (galvanically isolated), Optional: Power over Ethernet |
Evaluation software / Compatibility | ROTRONIC HW4 V3.9 |
Switch output | 1 relay potential-free change-over switch (NC - COM - NO) |
Switching capacity | 30 VDC/1 A or 35 VAC/1 A |
Pressure resistance | PF4: 5 bar, PF5: 0.7 bar |
Accuracy | ±1 hPa (0…65 °C; 950…1100 hPa) max. |
Resolution | 0 to 1 V 13 bit, otherwise 16 bit |
Mounting | Wall Mounting |
Electrical connections | Screw terminals in housing |
Measurement range | PF4: ±10 Pa / ±25 Pa / ±50 Pa / ±100 Pa / ±250 Pa / ±500 Pa PF5: ±25 Pa / ±50 Pa / ±100 Pa / ±250 Pa / ±500 Pa |
Analog outputs | Min. 1, max. 3, freely configurable |
Maximum altitude | 2000 m au-dessus du niveau de la mer |
Sensor type | PF4: Flow Sensor / PF5: Diaphragm Sensor |
Zero point compensation | PF4: Automatic, every 5 ms in the sensor, PF5: Automatic, configurable via HW4 |
IP protection class | IP65 (without Ethernet) / IP40 (with Ethernet) |
Influence line resistance RTD/resistance 3-wire | ±0.05 %FS/Ω |
Rated current consumption | <300 mA @ 24 VDC |
Digital communication | Ethernet (TCP) / RS-485 (Modbus RTU) |
Analog output type | 0...1 V, 0...5 V, 0...10 V, 0...20 mA, 4...20 mA |
Analog output accuracy (@ 23 °C) | Voltage output: ±1 mV/V Current output: ±20 μA |
Analog input | 1, freely configurable |
Analog input type | 0…10 V, input resistance >50 k 0…24 mA, measurement resistance 412.5 Ω |
Ambient pressure dependence | PF4: Compensated, PF5: None |
Working range - pressure | 300…1100 hPa |
Working range - temperature | -5...65 °C |
Want to learn more about our products?
We will be pleased to personally advise you.
+1 905 754-5164
sales@rotronic.ca