Protran PR3915
Dual Redundant Subsea
Pressure Transmitter• Two pressure sensors and electronics
for reliable dual redundancy• Silicon-on-Sapphire sensor technology foroutstanding performance• Submersion to 3,000 metres sea level• Pressure ranges available to 1,000 bar• High accuracy option• Hyperbaric testing to 3,300 metres depth• Environmental Stress Screening(ESS Testing)Vers. 20/1/Eng

Protran ® PR3915 Dual Redundant Subsea Pressure Transmitter
Technical Data
Description
The PR3915 Dual Redundant Subsea pressuretransmitter has been designed to meet therequirements of the sub-sea oil industry ValveMountable and is configured to mount directly
to the industry standard control valve flange
arrangement.
The unique Silicon-on-Sapphire sensor technology provides
outstanding performance and gives excellent stability overa wide temperature range. The advanced sensor design
consists of a piezoresistive silicon strain gauge circuit, which isepitaxially grown onto the surface of a sapphire diaphragm toform 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 andprovides 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 fully welded body with wetted parts conforming to
the NACE recommendation for material corrosion resistance,
this product will provide a durable solution for long term
accurate pressure measurement even when permanently
situated in extreme depth sub-sea environments. The pressureconnection is achieved with an 8mm diameter stem with integral
dual redundant o-ring seal grooves. Optional connections areavailable. Alternative connections are available. The fitting isconstructed from Inconel 625 for high chemical resistance.
Providing a two wire output signal of 4-20 mA with highstability and repeatability for pressure ranges up to 1,000 bar.
Intended for permanent immersion in pressurised dielectic oiland protected from ingress with a high pressure glass-to-metal
lead through the product can withstand external pressure up
to 3,000 metres depth water and provides secondary pressurecontainment up to 1,650 bar. Units can be supplied withhyperbaric test certificates to 3,000metres water submersion.
Electrical connection is via strong PTFE Raychem Flexlite leads.
Pressure ranges available from 0-200 bar to 0-1,000 bar.

Dimensions(in mm)-4474.5

Protran ® PR3915 Dual Redundant Subsea Pressure Transmitter
Technical Data
TypeSensor Technology:

PR3915
Silicon-on-Sapphire (SoS)

Output Signal:

4 – 20 mA (2 wire)

Supply Voltage:

10 – 36 VDC

Pressure Reference:

Sealed gauge

Protection of Supply Voltage:

Protected against supply voltage reversal up to 50 V

Standard Pressure Ranges:

0 – 569 bar; 0 – 759 bar; 0 – 1,035 bar; 0-1,380 bar (other options available)

Overpressure Safety:
Load Driving Capability:
Accuracy NLHR:

2x for ranges up to 759 bar; 1.5x for 1,035 bar
4 – 20 mA: RL < [UB - 10 V] / 20 mA (e.g. with supply voltage (UB) of 36V, max. load (RL) is 1300 Ω)≤ ±0.25 % of span BFSL

Zero Offset and Span Tolerance:±0.10mA

Operating Ambient Temperature:-20°C to +40°C (-4 °F to +104 °F)

Operating Media Temperature:-20°C to +40°C (-4 °F to +104 °F)

Storage Temperature:+5 °C to +40 °C (+41 °F to +104°F) Recommended Best PracticeTemperature Effects:±0.015%fs total error band for -20° to +40°C; Typical thermal zero and span coefficients ±0.005%FS/°C.

ATEX/IECEx Approval Option:

Ex II 1 G Ex ia IIC T4 Ga (zone 0)
Ex II 1 D Ex ia IIIC T135 °C Da (zone 20)
Ex I M 1 Ex ia I Ma (group 1 M1)

ATEX/IECEx Safety Values:

Ui = 28 V
Ii = 119 mA
Pi = 0.65 W
Li = 0.1 µHCi = 74 nF
Temperature Range = -20 °C to +70 °C
Max. cable length = 45 m

Ingress Protection:
Electromagnetic Compatibility:

Fully welded housing. Rated IP67 when correctly installed to conduit connection.
Emissions: EN61000-6-4; Immunity: EN61000-6-2; Certification: CE Marked

Insulation Resistance:> 500 MΩ @ 50 VDC

Response time 10-90 %:1 mS

Wetted Parts:

SAE 316 stainless steel with titanium alloy measurement cellPressure Media:

All fluids compatible with SAE 316 stainless steel and titanium alloy

Pressure Connection:

Many specialised pressure connection options available to suit individual requirements. Contact the sales team for
more information.

Electrical Connection:

Cable outlet or Subsea connector options availableNet. Weight (Kg):

Subject to specification

DISCLAIMER : ESI Technology Ltd operates a policy of continuous product development. We reserve the right to change specification without
prior notice.All products manufactured by ESI Technology Ltd are calibrated using precision calibration equipment, traceable to national
measurement standards.