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Wet/wet differential pressure transmitter - Model PD1L

Differential pressure transmitter PD1L

Product description

Featuring two pressure ports for high and low pressures, Senzors’ model PD1L is a compact, rugged wet/wet differential pressure transmitter. It utilizes the latest leading-edge technologies to measure pressure and has been specifically designed to measure low differential pressures under high line pressures (up to 200 bar). With its excellent stability and proven reliability, the PD1L provides unequaled performance and is designed for any application that requires a low to medium pressure measurement.

The sensor integrates a single solid-state, piezoresistive MEMS silicon die which acts as the sensitive element and converts pressure into an electrical signal. Using advanced techniques of MEMS fabrication (like wet etching, anisotropic etching), a thin diaphragm is crafted inside the silicon die. The thickness of the diaphragm is individually adapted to each pressure range so as to get the highest possible sensitivity without breaking under full pressure load.

The sensor signal is amplified by conventional analog electronics which provides a high-level output from an unregulated voltage supply and a fast response time with no latency, thanks to pure analog signal processing. Each unit is fully tested, compensated and calibrated for pressure and temperature. Each transmitter is shipped with a traceable calibration card.

The electronic circuit is packaged in a hermetically-sealed, all-welded 316L stainless steel housing enabling the PD1L to be immersed in water or pressure washed without internal leakage. This design makes the PD1L ideal for pressure measurements that can involve wet, corrosive or sterile media in the most severe environments.


Physical characteristics
Pressure range 0 to 0.2 bar through 0 to 2 bar
Safe overpressure 2 x (positive side), 1.5 x (negative side)
Burst pressure 3 x (positive side), 2 x (negative side)
Line pressure 200 bar
Environmental characteristics
Storage temperature -40 to 125°C
Operating temperature extremes -40°C, 125°C
Maximum operating temperature span 140°C
Ambient temperature -40 to 80°C
Electrical characteristics (choose one circuit)
Power supply / excitation 8 - 32 VDC 13 - 32 VDC 8 - 32 VDC 8 - 32 VDC
Output signal 4 - 20 mA 0 - 10 VDC 0 - 5 VDC 0.5 - 4.5 VDC
Current draw 20 mA 5 mA 5 mA 4 mA
Response time 5 ms 5 ms 5 ms 5 ms
Mechanical characteristics
Electrical connections ✔ DIN 43650-A ✔ Amphenol C 091 A ✔ M12x1 ✔ PTIH-10-6P ✔ PE cable
Mechanical connections ✔ G 1/4" Int ✔ 1/4"-18NPT Int
Materials available 316L Stainless steel
Seal materials available FKM, EPDM, Silicone, NBR
Performance (depending on temperature compensation range)
Compensated temperature range -10 to 80°C
Linearity ±0.25%FS
Hysteresis ±0.005%FS
Repeatability ±0.005%FS
Line pressure drift ±0.05 %FS/bar
Zero offset ±2mV
Span offset ±0
Temperature drift of Zero ±0.015%FS/K
Temperature drift of Sensitivity ±0.03%/K
Stability (per annum) ±1mbar

All values are typical values.