Pepperl+Fuchs HID2082
Pepperl+Fuchs HID2082 - Image 2

Pepperl+Fuchs HID2082

Product Introduction HID2082 is a 2-channel isolated temperature converter designed for RTD, thermocouple and potentiometer sensors installed in hazardous explosion zones. It receives raw temperature sensor signals, performs linearization calculation, converts measurement value into standard 4-20mA or 1-5V analog output. The module supports signal splitter function, and provides sensor break detection and line fault detection. It supports configuration via PACTware software and achieves SIL 2 functional safety level.

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Description

Pepperl+Fuchs HID2082

Technical Specifications

  • Product Type: 2-channel temperature converter isolated barrier
  • Power Supply: 20.4 V DC to 30 V DC bus powered via termination board
  • Input Signal: Thermocouple, RTD, potentiometer, resistance signal
  • Output Signal: Linearized 4 mA to 20 mA sink/source or 1 V to 5 V
  • Isolation Voltage: 2.5 kV AC galvanic isolation
  • Functional Safety: SIL 2 according to IEC 61508 / IEC 61511
  • Diagnostic Function: Sensor breakage detection, line fault detection
  • Configuration Tool: PACTware DTM software
  • Protection Rating: IP20
  • Operating Temperature: -20 °C to +60 °C
  • Mounting: Standard 35 mm DIN rail mounting
  • Housing Width: 18 mm per module

Functional Features

  1. 2 independent measurement channels for temperature sensors in intrinsically safe hazardous areas.
  2. Built-in linearization algorithm for thermocouple and RTD temperature signals.
  3. Configurable analog output supports 4-20mA sink/source or 1-5V voltage signal.
  4. Signal splitter function converts one sensor input into two independent analog outputs.
  5. Sensor break detection identifies open circuit failure of temperature sensing element.
  6. Line fault detection monitors field wiring short circuit and wire break fault.
  7. PACTware software supports remote parameter configuration, range setting and diagnostic reading.
  8. Galvanic isolation eliminates ground loop interference between field sensors and control rack.
  9. Compact slim DIN rail housing saves cabinet installation space.
  10. Continuous self-test verifies internal safety circuit integrity during normal operation.

Application Scenarios

  • Petrochemical plant hazardous zone thermocouple and RTD temperature measurement
  • Refinery furnace and reactor temperature signal conditioning
  • Offshore platform intrinsically safe temperature monitoring loops
  • Chemical production process temperature measurement for safety instrumented system
  • Pharmaceutical explosion-proof area temperature sensor signal conversion

Material Composition

  • Housing: Flame-retardant polycarbonate plastic enclosure
  • Main PCB: FR4 printed circuit board with conformal coating
  • Isolation components: High isolation optocoupler and isolation transformers
  • Signal processing components: Precision instrumentation amplifier and A/D converter chips
  • Terminal blocks: Tin-plated copper alloy screw terminals
  • Surge protection components: Transient suppression diodes and current limiting resistors

Structural Characteristics

  • Slim single-width DIN rail plastic housing.
  • Front panel LED indicators for power and channel fault status.
  • Rear removable screw terminals separated into hazardous side sensor terminals and safe side output terminals.
  • Internal physical isolation barrier separates intrinsically safe sensor circuit and non-safe control circuit.
  • Independent signal conditioning circuit for each temperature channel.
  • Passive convection cooling without fan components.

Working Principle RTD or thermocouple temperature signal from hazardous zone enters HID2082 input terminals. Internal A/D converter samples raw sensor signal. Microcontroller applies linearization calculation and cold junction compensation for thermocouple input. The module converts calibrated temperature value into standard 4-20mA or 1-5V analog output. Galvanic isolation barrier blocks ground potential difference between field and control cabinet. Sensor break and line fault detection continuously monitors sensor loop impedance and triggers fault indication when wiring or sensing element fails.

Installation Requirements

  • Mount HID2082 on 35 mm DIN rail inside non-hazardous control cabinet only.
  • Use shielded twisted pair intrinsically safe instrument cable for temperature sensor wiring.
  • Separate intrinsically safe wiring from non-safe power cables in cable trays.
  • Complete protective earth connection to cabinet ground bar.
  • Set sensor type, measurement range and output parameters via PACTware before commissioning.
  • Perform temperature signal simulation test and sensor break fault simulation test after wiring completion.
  • Confirm ATEX / IECEx installation rules for hazardous area temperature sensor wiring.

Usage Notes

  • Do not modify internal safety components of the isolated barrier.
  • Do not connect non-intrinsically safe power to field-side sensor terminals.
  • Keep cabinet environment free of corrosive gas and conductive dust.
  • Inspect terminal screw tightness periodically under vibration conditions.
  • Disconnect power before modifying intrinsically safe wiring.
  • Use anti-static wristband when handling spare modules.
  • Replace unit immediately when permanent isolation or signal conversion fault occurs.

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