Subsea Pressure Transmitter with RS-485 Interface, PR3930


■ Suitable for ROV and deep sea test equipment
■ Submersion to 6,000 meters depth
■ RS-485 communication up to 1200m



Description | Data Sheet | Related Products

Subsea Pressure Sensor Performance:

  • Submersion to 6,000 meters depth
  • Suitable for ROV and deep sea test equipment
  • Pressure ranges available to 1,500 bar (21,755 psi)
  • Hyperbaric testing and Environmental Stress Screening (ESS Testing)
  • RS-485 communication up to 1200m
  • Silicon-on-Sapphire sensor technology for outstanding performance
  • High accuracy option
  • Selectable baud rate
  • Resistant to noise interference


The PR3930 subsea pressure transducer has been designed to meet the demanding requirements of pressure measurement at deep levels of immersion, especially in oil industry applications. It can be configured to suit a multitude of applications and with proprietary RS-485 interface, each sensor can be allocated a unique device address and connected in series to other sensors and devices on the same communications link.

The unique Silicon-on-Sapphire sensor technology provides outstanding performance and gives excellent stability over a wide temperature range. The advanced sensor design consists of a piezoresistive silicon strain gauge circuit, which is epitaxially grown onto the surface of a sapphire diaphragm to form a single crystalline structure. The sapphire sensor element is then molecularly bonded to a titanium alloy sub-diaphragm. This enables the sensor to endure higher over-pressures and provides superb corrosion resistance. The sensor exhibits virtually no hysteresis and excellent long-term stability. With outstanding insulation properties, the sapphire substrate allows the sensor to operate over a very wide temperature range without loss of performance.

Housed in a fully welded body, this product will provide a durable solution for long-term accurate pressure measurement even when permanently situated in extreme depth sub-sea environments. Providing a half-duplex digital RS-485 output signal and 0-5 V analog output, the PR3930 provides high stability and repeatability for pressure ranges up to 1,500 bar. Intended for permanent immersion the product can withstand external pressures of up to 6,000 meters depth water. Units can be supplied with hyperbaric test certificates to 3,000 metres water submersion. Electrical connection is via 8 pin Subconn MCBH8M connector (6 pin option available).


PR3930 Subsea Pressure Transmitter Data Sheet (PDF)


Additional information

Additional information

Model Number


Pressure Ranges

0-10 bar (0-145 psi), 0-16 bar (0-200 psi), 0-25 bar (0-300psi), 0-60 bar (0-1,000 psi), 0-100 bar (0-1,450 psi), 0-250 bar (0-3,000psi), 0-160 bar (0-2,500 psi), 0-400 bar (0-5,800 psi), 0-600 bar (0-8,700 psi), 0-1,000 bar (0-14,500 psi), 0-1,500 bar (0-20,000psi)