PTC 420 High Accuracy Marine Pressure Transmitter

The SENSVISION PTC 420 has been engineered specifically for demanding marine and offshore environments where precise pressure and hydrostatic level measurement are essential. With nominal pressure ranges from 0.04 bar up to 20 bar and level ranges up to 200 mH₂O, this transmitter is ideal for monitoring ballast tanks, loading operations, and vessel stability systems. The device delivers standard accuracy of ≤ ± 0.25% FSO with an optional high precision version of ≤ ± 0.1% FSO for nominal pressures of 0.6 bar and above.

At the core of the SENSVISION PTC 420 is a capacitive ceramic sensor that ensures excellent long term stability of ≤ ± 0.1% FSO per year and high overpressure resistance. The diaphragm is available in ceramic Al₂O₃ 96% as standard, with an optional 99.9% purity version for enhanced performance and chemical resistance. Certified by leading marine classification societies including Lloyd’s Register, DNV, ABS, and CCS, the transmitter is built for reliable operation under vibration, temperature variation, and harsh maritime conditions. An intrinsically safe Ex ia version is available for hazardous marine areas.

Features Of The SENSVISION PTC 420 Marine Ceramic Pressure Transmitter

  1. High Accuracy Marine Pressure Measurement Technology
    The SENSVISION PTC 420 offers standard accuracy of ≤ ± 0.25% FSO with an optional ≤ ± 0.1% FSO version, ensuring precise monitoring in stability and ballast control systems.

  2. Wide Low Pressure And Level Measurement Capability
    Nominal pressure ranges from 0.04 bar to 20 bar and corresponding level ranges up to 200 mH₂O support hydrostatic tank measurement and low pressure marine systems.

  3. Ceramic Sensor With Excellent Long Term Stability
    The capacitive ceramic diaphragm provides long term stability of ≤ ± 0.1% FSO per year and high resistance to overload and temperature fluctuations.

  4. Marine Type Approvals For Certified Installations
    Approved by Lloyd’s Register, DNV, ABS, and CCS, the SENSVISION PTC 420 is suitable for installation in regulated marine and offshore environments.

  5. Robust Mechanical And Electrical Design For Harsh Conditions
    With vibration resistance according to DNV Class B curve 2 and ingress protection up to IP 68, the transmitter is designed for reliable maritime operation.

  6. Optional Intrinsically Safe Version For Hazardous Zones
    An Ex ia certified version is available for use in zone 0 and other hazardous areas, ensuring safe installation in explosive atmospheres.

Applications Of The SENSVISION PTC 420 Marine And Offshore Pressure Transmitter

The SENSVISION PTC 420 is designed for accurate pressure and hydrostatic level monitoring in marine and offshore systems where vessel safety, stability, and certified compliance are critical. Its high precision ceramic sensing element and marine approvals make it ideal for demanding maritime environments.

  • Monitoring of pressure during loading and unloading processes
  • Monitoring of ship position and draught
  • Use in anti heeling systems
  • Level measurement in ballast tanks
  • Level monitoring in storage tanks on vessels
  • Marine hydraulic and pneumatic systems
  • Offshore process skids requiring certified pressure measurement
  • Hazardous marine areas using intrinsically safe versions

Technical Specifications Of The SENSVISION PTC 420 Marine And Offshore Pressure Transmitter

SpecificationDetail
Product TypeMarine and offshore pressure transmitter with ceramic sensor
Nominal Pressure Range0.04 bar to 20 bar
Level Range0.4 to 200 mH₂O
Pressure TypeGauge and absolute versions
Accuracy Standard≤ ± 0.25% FSO
Accuracy Optional≤ ± 0.1% FSO for P ≥ 0.6 bar
OverpressureUp to 45 bar depending on range
Permissible VacuumDown to -1 bar depending on range
Output Signal2-wire 4.20 mA
Supply Voltage Standard9 to 32 VDC
Supply Voltage IS Version14 to 28 VDC
Long Term Stability≤ ± 0.1% FSO per year
Response TimeMean < 200 msec, max 380 msec
Measuring Rate5 measurements per second
Turn On Time700 msec
Thermal Error≤ ± 0.1% FSO per 10 K in compensated range -20 to 80 °C
Medium Temperature-40 to 125 °C
Electronics Temperature-25 to 85 °C
Storage Temperature-40 to 100 °C
Pressure Port MaterialStainless steel 1.4404 standard, optional CuNi10Fe1Mn
Housing MaterialStainless steel 1.4404
Seal MaterialFKM
Diaphragm MaterialCeramic Al₂O₃ 96% standard, 99.9% option
Vibration Resistance4 g according to DNV Class B curve 2
Ingress ProtectionIP 65, IP 67, IP 68 depending on version
Intrinsic Safety ApprovalEx ia for gases
Operational Life100 million load cycles
CE ConformityEMC Directive 2014/30/EU
ATEX Conformity2014/34/EU

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