PCD-S - RMS Differential Pressure Probe

The Rotronic differential pressure probes are ideal for clean rooms, operating theaters and applications where even minor differences in pressure can have a big effect. Thanks to our two different measurement methods (thermal mass flow measurement and diaphragm measurement), we offer the perfect solution for every requirement. Together with other measurement parameters, these probes can be integrated in RMS perfectly.


  • High-precision measurement and long-term stability
  • With ambient pressure compensation
  • Large overload range
  • With flow or diaphragm sensor technology
  • Compatible with RMS logger, RMS On-premises software and SaaS solutions


  • HVAC
  • Cleanroom

Accuracy at 23 ±5 °C ±1.0 % full-scale (Pa)
Ambient pressure & temperature compensation Flow: Automatic
Diaphragm: Not necessary
Parameters Differential pressure
Sensor type Flow / Diaphragm
Measuring range -25...+25 Pa / -50…+50 Pa / -100...+100 Pa / -250...+250 Pa / -500…+500 Pa
Range of application -20…+80°C (0…+70°C temp.-comp.) / 0…95% RH non-condensing
Pressure resistance Flow: 5 bar
Diaphragm: 0.7 bar
Adjustment points Factory adjustment/calibration: 5 points
Customer adjustment: max. 9 points
Pressure connections Tubing connector Ø 4.0 mm x 10 mm
Medium Flow: Air
Diaphragm: Air & non-aggressive gases
Zero point compensation Flow: Automatic, 1x per measurement interval
Diaphragm: Manual, with external tube; via RMS software
Leak rate Flow: <180 μl/min.
Diaphragm: 0 μl/min.
Battery lifetime Flow:
Wireless logger: 60d @ 10s interval / 350d @ 60s interval
LAN logger: 70d @ 10s interval / 395d @ 60s interval
Wireless logger: 130d @ 10s interval / 650d @ 60s interval
LAN logger: 180d @ 10s interval / 840d @ 60s interval
Warm-up time <0.5 s
Long-term stability <0.3 % of measured value / year
Response time t 63 <1 s
Current consumption Flow: 30 mA (avg.)<br>Diaphragm: 12 mA (avg.)
Measurement interval 1 s probe
≥10s RMS / 1s Modbus
Protocols Modbus RTU
Fire protection class Complies UL94-HB
Housing Polycarbonate (housing)
Stainless steel DIN 1.4305 (nuts)
IP protection rating IP65
FDA / GAMP FDA 21 CFR part 11 / GAMP5
Dimensions Ø 32 mm x 87 mm
Weight 60 g

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+65 6376 2107

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