Field mounted HART temperature transmitter

Model : PR 7501

Brand: PR Electronics

  • RTD, TC, Ohm, and bipolar mV input and analog output
  • High definition local operator interface (LOI) with 3 optical buttons
  • Selectable red or white backlight
  • Ex d explosion proof / flame proof in aluminum or 316 stainless steel version
  • HART 7 functionality with HART 5 compatibility

Temperature Transducer, Transmitter


PR Electronics

Number of Inputs


Input Type

Linear Resistance, RTD, Thermocouple

Number of Outputs


Output Type

DC Current


Front Display, HART Protocol

Special Functions

Custom sensor linearization, Process signal calibration


< ±0.05% of span


ATEX, CSA, EAC Ex, EU-RO marine, FM, IECEx, INMETRO, NEPSI, SIL2, Hardware Assessment


LCD 96×64 pixels

Power Supply

Input loop-powered

Isolation Voltage

1.5 kVAC

Operating Temperature

-20 to +85°C, -40 to +85°C

Temperature Coefficient

< ±0.005% of span /°C

Protection Degree

IP 54, IP 66, IP 68


107.4x145x124 mm


1300g, 2800g

Other product features

2800 g


107.4 × 145 × 124 mm

High definition display

  • 0, 90, 180, & 270 degree position adjustments.
  • Monitoring, programming, and diagnostics view.
  • Extensive diagnostics with flashing red or white backlight
  • Supports 7 languages.

Local operator interface (LOI)

  • 3 optical buttons; up, down and enter.
  • Dynamically adaptive to wear or accumulation of dirt.
  • Immune to interference from ambient light sources.
  • Useable with or without gloves.


  • From the LOI through PR guided menu.
  • PReset and HART modem.
  • HHC, DCS or AMS via HART.

Mounting / installation

  • For installation in zone 0, 1, 2 and zone 20, 21, 22 and in Class 1, Division 1 and 2 applications.
  • Hardware assessed for use in SIL applications.
  • Mounting on 1.5”–2” pipe bracket or on wall/bulkhead.


  • Linearized temperature measurement with TC and RTD sensors e.g., Pt100 and Ni100.
  • HART communication and 4…20 mA analog PV output for individual, difference or the average temperature measurement of up to two RTD or TC input sensors.
  • Conversion of linear resistance to a standard analog current signal, e.g. from valves or Ohmic level sensors.
  • Amplification of bipolar mV signals to standard 4…20 mA current signals.
  • Up to 63 transmitters (HART 7) can be connected in a multidrop communication setup.

Technical characteristics

  • NAMUR NE43 and NE89.
  • HART protocol revision can be changed by user configuration to either HART 5 or HART 7 protocol.

Source: PR7501 Official Page

Product Documents:


PR Electronics Solutions:

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