ELPRT 100ERH Analog Electronic Pressure Transmitter

ELPRT-100 ERH – Nuclear Grade Analog Pressure Transmitter Salient Features

• Analog Type Transmitter

• Qualified for 4.1 MRad TID Gamma Radiation

• Two-wire system (4–20 mA DC)

• Capacitance Type Sensor

• Rangeability: 6:1

• 20 Years Service Life

• Conforms to IEEE-323 Environmental Conditions

• Conforms to IEEE-344 Seismic Conditions

• LOCA (Loss of Coolant Accident) Qualified

• Adjustable Damping

  Description

Electronet’s ELPRT-100 ERH is an indigenously developed Nuclear Grade Analog Pressure Transmitter, designed for reliable operation during normal and severe abnormal conditions in Nuclear Power Plants.

This transmitter is fully qualified as per IEEE-323 and IEEE-344 standards and is engineered to operate under harsh environmental, seismic, and LOCA conditions.
It uses a robust Capacitance Type Pressure Sensor, suitable for Pressure, Differential Pressure, and Absolute Pressure measurement applications.

  Additional Key Features

• Analog Design for long-term stability

• 20-year operational life

• 4.1 MRad TID Gamma Radiation qualification

• LOCA qualified (unsaturated test profile)

• Seismic qualification (1–100 Hz, all 3 axes) as per IEEE-344

• High accuracy & excellent long-term stability

• Zero suppression up to 500% and zero elevation up to 600%

• Continuous & adjustable span and zero

• Adjustable damping

  Functional Specifications General

• Transmitter Type: Analog, 2-Wire

• Output: 4–20 mA DC (Standard) / 20–4 mA DC

• Range: As per ordering range table

• Sensor Type: Capacitance Type

• Power Supply: 28 VDC ± 4 VDC

• Rangeability: 6:1

• Damping: 0 to 5 sec adjustable

Adjustments

• Zero Suppression: Up to 500% of calibrated span

• Zero Elevation: Up to 600% of calibrated span

• Span & Zero Adjustment: External via potentiometer

  Mechanical / Process

• Static Pressure: 4, 10, 25, 32 MPa (as per range)

• Body Rating: Max. 40 MPa

• Fill Fluid: Silicone Oil

• Process Connection: ½” NPT (F) / Others via adapter

• O-Ring / Gasket: Buna-N, EPDM, Teflon, Silicon Rubber

• Vent & Drain: Provided

• Mounting: Horizontal / Vertical, Wall or Stand mounting

• Weight: Approx. 11.5 kg

  Environmental

• Max. Process Temperature: 5–120°C

• Max. Operating Temperature (Electronics): 5–55°C

• Humidity: 0–100% RH

• Ingress Protection: IP-68 (IEC-60529)

• Service Media: Liquid (Heavy Water, Light Water), Gas, Vapor

  Electrical

• Electrical Connection: 3-Pin Allied Connector

• Power Supply Connection: 2/3-Pin MS Circular Connector

• Test Terminal: Provided (to monitor current without breaking load)

• Grounding: External grounding bolt provided

• Reverse Supply Protection: Yes

  Construction

• Housing: SS-316 for both mild & harsh environments

• Isolating Diaphragm: SS-316L / Hastelloy-C / Other

• Drain & Vent Valves: SS-316L / Hastelloy-C / Monel

• Process Flanges & Adapters: SS-316L / Hastelloy-C / Monel

• Bolts & Nuts: SS-316