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Extreme Environment Pressure Transducers

The NP9000 Series pressure transducers are the latest generation of harsh environment sensors designed and manufactured by Ultra Energy. These fully hermetic submersible transducers combine a Wheatstone bridge strain gauge pressure sensor and temperature sensor in the one package. This allows for precise temperature compensation in the signal conditioner or transmitter electronics. The transducer is manufactured using a proprietary process with high temperature interconnects. Mineral insulated metal sheathed MIMS cable carries the power and signals for connection to remote signal conditioners. The transducer is a fraction of the size of industrial pressure transmitters making it ideal for on-machine applications in extreme environments and in tight spaces where traditional pressure transmitters are unsuitable. Signal converters can be located up to 250 feet away in a mild environment. No other pressure transducer can match the extreme temperature performance of the NP9000.

  • Features
  • Specifications
  • Nuclear Qualifications
  • Documents
  • Absolute pressure transducer
  • Operating temperature to 650°F
  • Remote operation up to 250 feet between transducer and electronics
  • Magnetic field immunity
  • Fully submersible
  • 100% Analog passive component / simple apparatus
  • Compatible with Ultra analog pressure transmitter electronics and strain gauge signal converters
Name Description
Function Harsh Environment absolute pressure transducer with temperature compensation
Ingress Protection Fully hermetic and submersible (1000 psi external pressure withstand)
Pressure Ranges 0-URL (psia) 0-20, 0-100, 0-1500, 0-2500
Overpressure 2x URL max.
Burst 4x URL min.
Operating Range +40°F to +650°F (Survival at +665°F for 1 hour)
Reference Accuracy † ±0.25% URL at 25°C
Linearity < 0.2% FS
Response Time ≤ 0.4 sec
Ambient Temperature Effect † ±0.5% of URL / 100°F
Total Accuracy (Reference Accuracy, Ambient Temperature Effect, 24-month Drift) † ±2.5 % of URL @300°F ±50°F
Total Uncertainty (degraded conditions, DBA/LOCA, PAM) † ±5.2 % of URL
Materials Stainless Steel 316/316L with 15-5 PH or Inconel diaphragm sensor
Process Connection JIC Fitting (JIC 37°) 7/16"-20 UNJF-3A thread per MS33656-4
Cable Harsh environment six-conductor mineral insulated metal sheathed cable, 1/4" O.D.
Electrical 4-wire closed bridge + 1 or 2 wire RTD for temperature compensation
Bridge 4-wire 5,000 – 10,000 kΩ
Sensitivity 2 mV/V nominal
Bridge Excitation 10 – 20 VDC
Insulation Resistance IR: >100 MΩ @ 50 VDC
Temperature sensor 1,000 Ω Pt 3850 ppm/K RTD or 300 Ω 5000 ppm/K
† After correction by signal conditioner

  • Environmental

    IEEE Class 1E capable up to Safety Class A1, Seismic Cat I

  • Mission Life: ≥ 24 months; ≥ 35Mrad TID

    Mission Life: ≥ 24 months; ≥ 35Mrad TID

  • Quality Class

    Nuclear Grade Quality Assurance

  • Conformity

    ASME Section III, ANSI/ISA-67.02.01-2014 Nuclear Safety-Related Instrument Sensing Line Piping and Tubing Standard

  • Weights

    Components and Accessory Weights (Lbs)

    • Bracket 2.4
    • Pressure Transducer 0.8
    • Swagelok® NVT4N5VG15-GR two-stem manifold 2.7
    • Manifold Mounting bolts 0.3
    • Swivel Nut Male Connector – SAE 37° Flared adapter 0.1
    • U-Bolt 0.3
    • Total Assembly w/o MI Cable 6.5
    • MI Cable @ 0.11 Lbs/Ft

  • Schematic

  • Ordering Information

  • Notes

    This document is not intended to serve as a design document and is subject to change. Actual specifications are per customer order. Ultra reserves the right to vary these specifications without notice.

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