PF4 – Differential-Pressure Transmitter

Applications
The ROTRONIC differential-pressure transmitters are ideal for clean rooms, operating rooms and applications where even minor differences in pressure can have a big effect.

Features
• High-precision measurement and long-term stability
• Fast response time and low hysteresis
• Analog signals freely configurable
• Integrated relay switch contact
• Large overload range
• Expandable with HygroClip2 sensor or analogue inputs
• High immunity to dust and humidity in the medium

Dimensions	129 x 72 x 45 mm
Weight	240 g
Range of application	0…70 °C / 0…90 %rh; 0…60 °C / 0…90 %rh with display
Accuracy at 23 ±5 °C	±1.0 % of full scale @ 23 °C ±3 K
Inputs	Differential pressure, hose connections, 4 mm internal diameter Optional: HygroClip2 / analog input 1 Pt100 connection, 4-wire
Measuring range	-25…+25 Pa / -50…+50 Pa -100…+100 Pa / -250…+250 Pa -500…+500 Pa -100…200 °C (probe-dependent) 0…100 %RH (with HC2)
Pressure dependency	0.1 %/hPa
Pressure resistance	2 bar (2’000 hPa)
Air flow	120 – 180 μl/min
Accuracy analog output	±10 mV (voltage output); ±20 μA (current output)
Switch output	1 relay, Time delay, duty cycle, resetting configurable
Switching capacity	<50 VAC / <75 VDC / <1 A
Power supply	15…40 VDC / 14…28 VAC
Current consumption	<70 mA / <150 mA (with Ethernet)
Long-term stability sensor	<0.3 %/ year
Response time t 63	<10 ms (only sensor element)
Alarm functions	Configurable relay, HW4
Type of output signals	Voltage, current, digital (optional)
Analog output signal (standard)	0…1 V, 0…5 V, 0…10 V, 0(4)…20 mA
Communication interfaces	Ethernet (optional)
Housing	ABS
Cable connections	1 x M16, terminal
IP protection rating	IP65
FDA / GAMP	FDA 21 CFR part 11 / GAMP5
Temperature adjustment	Single-point
CE / EMC conform	2004/108/EC