Subsea Pressure Sensor


Our Applied Measurements Pa600SS subsea pressure sensor series are ideal for the measurement of gas and liquid pressure in subsea and offshore applications.  They have a submersible IP68 protection rating for depths of up to 3000m (300bar external pressure) and a UNS S31803 Duplex stainless steel construction as standard.  Greater depths ratings to 8000m/800bar are also available on request.

Thanks to their wet-mateable 3-pin or 4-pin subsea connector type electrical connection, integrity at 3000m depths/300bar is guaranteed.  Plus, along with their ±0.25% of full-scale accuracy as standard, precision and optimum performance is ensured.  If your application requires even further accuracy, we can also provide a 0.1% optional version.

Viton O-ring, Duplex stainless steel case, ceramic diaphragm (96% aluminium oxide Al2O3) and a G¼ inch male process connection come as standard with the Pa600SS subsea pressure sensor.  Plus, Applied Measurements can provide alternate case, O-ring material and process connections to suit your requirement.  We can also provide improved thermal zero stability of <±0.02% or <±0.01%/Span/˚C.

The Pa600SS subsea series provides a wide choice of electrical outputs from its ASIC-based amplifier circuit, these include 4-20mA, 0-5Vdc, 0-10Vdc, 10mV/V and 20mV/V, as well as a ratiometric 0.5-4.5Vdc (10% to 90% of supply voltage) signal that requires a 5Vdc (2.7 – 5.5Vdc acceptable) to suit most dataloggers.

The Pa600SS subsea pressure sensor series can also be supplied with any of our wide range of instrumentation to give you a complete calibrated system.

Product Dimensions

Subsea Pressure Sensor Pa600SS Outline

All dimensions are in mm

Wiring Details

Subsea Connector
2 – wire+ve Supply
-ve Supply
Pin 1
Pin 2
Pin 3
3 – wire+ve Supply
-ve Supply
+ve Output
Pin 1
Pin 2
Pin 3
Pin 4
4 – wire+ve Supply
-ve Supply
+ve Output
-ve Output
Pin 1
Pin 2
Pin 3
Pin 4


  • Ranges: 0-1bar up to 0-700bar
  • Outputs: 4-20mA, 0-5Vdc, 0-10Vdc, 0.5-4.5Vdc, mV/V
  • Environmental Protection: IP68 Rated to 3000m Depth (300bar External Pressure)
  • Accuracy: <±0.25%/FS (0.1% option)
  • Rugged Duplex Stainless Steel Construction


Nominal Pressure RangeBar (sealed gauge or absolute)0-10-20-50-100-200-500-1000-2500-4000-6000-700
Compound RangesBar-1…0 *-1…+2 *-1…+5-1…+9-1...+19-1...+29-----
Permissible OverpressureBar24102040100200400575800800
Burst PressureBar45122550120250500650950950
*<±0.1% / FS (BFSL) accuracy not possible in this range
Output Signal & Supply VoltageWiring SystemOutputSupply VoltageInput CurrentInput ResistanceOutput Resistance
Pa642SS2 - wire4 – 20 mA9 – 32 Vdcn/a<500<500
Pa605SS3 - wire0 – 5V dc9 – 32 Vdc<10 mA<500<500
Pa6010SS3 - wire0 – 10V dc13 – 32 Vdc<10 mA<500<500
Pa645SS3 - wire0.5 to 4.5V dc5 Vdc (2.7 - 5.5Vdc)<3 mA<500<500
Pa602SS4 - wirePassive mV/V (un-rationalised)2 – 30 Vdc<1 mA @ 10V<11000<11000
Pa607SS4 - wire2mV/V (rationalised)2 – 30 Vdc<1 mA @ 10V<11000<11000
Pa610SS4 - wire10mV/V (amplified)3 – 12 Vdc<3 mA typ.<11000<2000 nom.
Pa620SS4 - wire20mV/V (amplified)3 – 12 Vdc<3 mA typ.<11000<2000 nom.
Accuracy (non-linearity, hysteresis, repeatability)% Full Scale Output<±0.25 (BFSL) <±0.1 (BFSL) optional
Zero Balance±% of Rated Output<1.0
Setting Errors (offsets)2-wire, 3-wire 4-wire rationalised 4-wire un-rationalisedZero & Full Scale, <±0.5% / FS Zero <0.2mV/V, span ±1% Zero<0.1mV/V, Span ±30%
Permissible Load2-wire 3-wire 4-wireRmax = [(VS – VS min) / 0.02] Ω Rmin = 10 k Ω Rmin = 11 k Ω
Influence EffectsSupply Effects Load EffectmV/V & 0.5 to 4.5V – Ratiometric, Other Voltage Outputs - <0.005 % FS / 1V 4-20mA = <0.05 % FSO / kΩ
Response Time (10% - 90%)ms≤1 (mV/V versions) ≤10 (amplified versions)
Warm-Up Time (amplified versions only)ms2 typ.
Permissible Temperatures & Thermal Effects
Media Temperature˚C-20 to +135 (non-freezing media only)
Ambient Temperature˚C-4 to +60
Storage Temperature˚C-20 to +60
Compensated Temperature Range˚C+20 to +60
Thermal Zero Shift (TZS)% / FS / ˚C<±0.04 (standard) <±0.02 (option) <±0.01 (option)
Thermal Span Shift (TSS)% output / ˚C<-0.015
Electrical Protection
Reverse Polarity ProtectionNo damage but also no function
Electromagnetic CompatibilityCE Compliant
Insulation ResistanceMegohms Ω at 50V dc>500
Mechanical Stability
Shock100 g / 11 ms
Vibration10 g RMS (20 ... 2000 Hz)
Housing & process connectionUNS S31803 Duplex Stainless Steel CA104 Marine Bronze or Titanium (optional)
‘O’ ring sealsViton NBR/Nitrile (optional) EPDM (optional) FFKM / Chemraz (optional)
DiaphragmCeramic Al2O3 96 %
Media wetted partsHousing and process connection, ‘O’ ring seal, diaphragm
Weightgrams150 nominal
Installation positionAny
Operational lifepressure cycles> 100 x 106
Environmental ProtectionIP68 to 3000m/300bar
Subsea Connector TypeSubConn® Circular Series Bulkhead3-Pin Male (2-wire sensors) / 4-Pin Male (3-wire & 4-wire sensors)


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