LPS, MPS, HPS hydrogen pressure sensors

For hydrogen systems and tanks

Our LPS, MPs and HPS pressure sensors have been specially developed for use where the fluid is hydrogen (H2) and are used, for example, in fuel cells, filling stations or high-pressure tanks.

The sensors and their variants are designed for the various pressure ranges up to 6 bar (LPS) and 30 bar (MPS) as well as for high pressure up to 900 bar (HPS) for measuring system and tank pressures in stationary and mobile applications.

Materials that come into contact with fluids have been selected in accordance with the requirements for use with hydrogen and withstand the high stresses of use in hydrogen environments, even over long service lives. Certifications required for use with hydrogen in accordance with EC79 and HGV 3.1 have been obtained. The sensors are available in various versions with analogue or digital (SENT/LIN) output signals.

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FIELDS OF APPLICATION
  • Systems for generating, using and storing hydrogen (H2)
  • For industrial and automotive use
  • Fuel cells
  • High-pressure tanks and reservoirs, filling and refuelling stations
  • Measuring and testing technology
FEATURES

High-pressure hydrogen measurement up to 900 bar

  • Robust for measuring pressures up to 900 bar
  • Monobloc measuring element with no welds

Very good hydrogen compatibility

  • Use of fluid-compatible materials
  • Burst-proof and long service lives
  • Freeze-resistant model
  • Certified according to EC79 and HGV 3.1

Multiple versions available

  • Analogue output voltage as well as SENT and LIN output
  • Various metric and UNF connection threads
  • High-pressure sensor with conical seal
TECHNICAL SPECIFICATION
Measuring ranges
Rated pressure 0–6 bar, absolute 1) (LPS)
0–30 bar, relative 1) (MPS)
0–900 bar, relative 1) (HPS)
Overpressure 2× rated pressure (LPS, MPS),
1,050 bar (HPS)
Bursting pressure 3× rated pressure (LPS, MPS),
1,750 bar (HPS)
   
Electrical characteristics
Supply voltage 5±0.5 V (analogue, SENT)
9–18 V (LIN)
Current consumption typ. 10 mA
Output signal 0.5–4.5 V, ratiometric
SENT
LIN 2.1
Overvoltage protection 2) ± 30 V
Reverse-polarity resistance 2) ± 30 V
   
Mechanical characteristics
Measuring element Stainless steel (MPS, HPS)
Silicon with stainless-steel membrane and oil reservoir (LPS)
Housing material Stainless steel
Pressure connection 3) Flange with O-ring (LPS)
Wrench size 27, M10×1, 7/16-20UNF (MPS)
Wrench size 27, M14×1, 7/16-20UNF, 3/8-24UNF (HPS)
Electrical connection MQS connector, MLK connector 3)
Installation position Any 4)
Weight approx. 50 g (LPS)
approx. 58 g (MPS, HPS)
   
Accuracy
Total error (default) 5)
±1 % FS (0–85 °C)
±2 % FS (–40–125 °C)
Total error (high accuracy) 5) ± 0.5 % FS
   
Environmental conditions
Rated temperature range –40–85 °C (125 °C)
Fluid temperature range –50–85 °C (125 °C)
Fluid compatibility Hydrogen, air, coolant (DI water, ethylene glycol)
ESD (DIN EN 61000-4-2) 2) ± 8 kV to contacts
± 15 kV to housing
EMC (ISO 11452) 2) 250 V/m
200 mA (BCI)
 
1) Other pressure ranges on request
2) Depending on the output signal and the application
3) Other pressure connections and electrical connections available on request
4) If there is moisture/condensate in the system, observe installation recommendations
5) Includes repeatability, hysteresis, non-linearity (TBL), calibration and temperature effects; depending on the pressure and temperature range

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