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Product short description:
  • 100 ohm Pt RTD or 0-900 ohm input
  • 4 to 20mA DC output
  • 9-32V DC from output loop power
  • USB-configured

The ST131 is a low-cost two-wire transmitter that converts a 100 ohm Platinum RTD sensor input to a proportional 4-20mA signal. Power is received from the output loop current.

ST131: RTD Input, Loop-Powered Transmitter Description

The ST131 is a low-cost two-wire transmitter that converts a 100 ohm Platinum RTD sensor input to a proportional 4-20mA signal. Power is received from the output loop current.

The ST131 RTD transmitter provides sensor excitation and includes linearization, lead-wire compensation, and lead-break detection functions. Setup and calibration are fast and easy with a convenient USB connection to your PC and Acromag’s Windows configuration software.

Advanced signal processing capabilities, variable range input, and convenient USB programming make this instrument a very versatile temperature transmitter for RTD and resistance elements.

The ST131 RTD input transmitters are designed to withstand harsh industrial environments and operate reliably across a wide temperature range with very low drift. They feature RFI, EMI, ESD, EFT, and surge protection plus low radiated emissions.

Learn more about the ST Series and view all models >

IMPORTANT: To prevent damage or errors from grounded PCs and surges, Acromag strongly recommends use of the USB-ISOLATOR when configuring an ST130 transmitter.

ST131 RTD Input Module Features & Benefits

  • Easy setup and digital calibration via USB with Windows configuration software
  • Flexible RTD or linear resistance input ranges
  • High accuracy and linearity
  • Advanced analog signal conditioning ASIC eliminates digitization errors
  • Low temperature drift
  • Fast response time (< 500µS)
  • Programmable over/under-range limits
  • Selectable upscale or downscale operation for sensor errors and lead-break detection
  • NAMUR NE43 compliant fault response
  • Reverse polarity protected with non-polarized output
  • Mounts in DIN Form B sensor heads
  • Optional DIN rail adapter
  • Wide ambient operation (-40 to 80°C)
  • Hardened for harsh environments
  • CE compliant. UL/cUL Class 1 Div 2 Zone 2 approvals.

Learn more about the ST Series and view all models >

The Best Temperature Sensor for Process Control: Thermocouple vs RTD - 8500918 (Log in to view the file)
Criteria for Temperature Selection of T/C and RTD Sensor Types This is part three of a comprehensive three-part series that provides information for choosing an industrial temperature sensor from Thermocouple (T/C) and Resistance Temperature Detector (RTD) sensor types. Thermocouple vs RTD Many users simply look to fill the basic needs of their application and do...
How to use RTDs for Temperature Measurement - 8500917 (Log in to view the file)
Criteria for Temperature Selection of T/C and RTD Sensor Types This is part two of a comprehensive three-part series that provides information for choosing an industrial temperature sensor from Thermocouple (T/C) and Resistance Temperature Detector (RTD) sensor types. The Basics of Temperature Measurement Using RTDs A Resistance Temperature Detector (RTD) is a passive circuit element...
How to Monitor RTDs for Temperature Differential - 8401008
Defining the Need: Monitor three RTD’s on a stack and transmit two differential 4-20mA signals representing -7 to 18°F. Each RTD transmitter is calibrated -20 to 120°F. Solution: Model 892M-0500 math module (qty. 3) Model 800C-SIP software interface pkg. (qty. 1) Model PS5R-VD24 power supply (qty. 1)   Download PDF for complete application note.

Specifications

Manuals

ST131 User Manual (Log in to download the file)

ST13C-SIP: Software Interface Package Information Page (Log in to download the file)
ST131 Configuration Software (Log in to download the file)
  • Compare

    ST130 Mounting Accessories

    • Simplifies mounting of ST130 Series transmitters
    • Ideal for mounting in the field or in a control room
    Select options
  • Compare

    ST13C-SIP

    • Configuration software
    • USB isolator
    • Two USB cables
    • One kit recommended per customer
       
    Select options
  • Compare

    ST13x-Config/Cal

    Factory custom configuration/calibration service. Specify input type, input/output zero and full-scale values, filtering, and sensor fault settings on order.
    Select options
  • Compare

    USB Cables

    4001-112: USB cable, 1 meter, with Type A to Type B plugs. 4001-113: USB cable, 1 meter, with Type A to Mini-B plugs. 5028-565: USB-OTG cable, 6 inches
    Select options

Additional information

Weight 5 oz
Dimensions 2 × 1 × 2 in
Part Number

ST131-0600: 100 ohm Pt RTD input, CE compliant, ST131-0610: 100 ohm Pt RTD input, CE compliant, plus UL/cUL Class 1 Div 2 Zone 2 approval and ATEX Certified.

Configuration

Factory Calibration, USB Configuration, Windows Software Configuration

Product Series

ST130 Series

  • Description

    ST131: RTD Input, Loop-Powered Transmitter Description

    The ST131 is a low-cost two-wire transmitter that converts a 100 ohm Platinum RTD sensor input to a proportional 4-20mA signal. Power is received from the output loop current.

    The ST131 RTD transmitter provides sensor excitation and includes linearization, lead-wire compensation, and lead-break detection functions. Setup and calibration are fast and easy with a convenient USB connection to your PC and Acromag’s Windows configuration software.

    Advanced signal processing capabilities, variable range input, and convenient USB programming make this instrument a very versatile temperature transmitter for RTD and resistance elements.

    The ST131 RTD input transmitters are designed to withstand harsh industrial environments and operate reliably across a wide temperature range with very low drift. They feature RFI, EMI, ESD, EFT, and surge protection plus low radiated emissions.

    Learn more about the ST Series and view all models >

    IMPORTANT: To prevent damage or errors from grounded PCs and surges, Acromag strongly recommends use of the USB-ISOLATOR when configuring an ST130 transmitter.

    ST131 RTD Input Module Features & Benefits

    • Easy setup and digital calibration via USB with Windows configuration software
    • Flexible RTD or linear resistance input ranges
    • High accuracy and linearity
    • Advanced analog signal conditioning ASIC eliminates digitization errors
    • Low temperature drift
    • Fast response time (< 500µS)
    • Programmable over/under-range limits
    • Selectable upscale or downscale operation for sensor errors and lead-break detection
    • NAMUR NE43 compliant fault response
    • Reverse polarity protected with non-polarized output
    • Mounts in DIN Form B sensor heads
    • Optional DIN rail adapter
    • Wide ambient operation (-40 to 80°C)
    • Hardened for harsh environments
    • CE compliant. UL/cUL Class 1 Div 2 Zone 2 approvals.

    Learn more about the ST Series and view all models >

  • Tech Papers

    The Best Temperature Sensor for Process Control: Thermocouple vs RTD - 8500918 (Log in to view the file)
    Criteria for Temperature Selection of T/C and RTD Sensor Types This is part three of a comprehensive three-part series that provides information for choosing an industrial temperature sensor from Thermocouple (T/C) and Resistance Temperature Detector (RTD) sensor types. Thermocouple vs RTD Many users simply look to fill the basic needs of their application and do...
    How to use RTDs for Temperature Measurement - 8500917 (Log in to view the file)
    Criteria for Temperature Selection of T/C and RTD Sensor Types This is part two of a comprehensive three-part series that provides information for choosing an industrial temperature sensor from Thermocouple (T/C) and Resistance Temperature Detector (RTD) sensor types. The Basics of Temperature Measurement Using RTDs A Resistance Temperature Detector (RTD) is a passive circuit element...
    How to Monitor RTDs for Temperature Differential - 8401008
    Defining the Need: Monitor three RTD’s on a stack and transmit two differential 4-20mA signals representing -7 to 18°F. Each RTD transmitter is calibrated -20 to 120°F. Solution: Model 892M-0500 math module (qty. 3) Model 800C-SIP software interface pkg. (qty. 1) Model PS5R-VD24 power supply (qty. 1)   Download PDF for complete application note.
  • Specs & Data Sheets

    Specifications

    Manuals

    ST131 User Manual (Log in to download the file)

  • Software

    ST13C-SIP: Software Interface Package Information Page (Log in to download the file)
    ST131 Configuration Software (Log in to download the file)
  • Accessories

    • Compare

      ST130 Mounting Accessories

      • Simplifies mounting of ST130 Series transmitters
      • Ideal for mounting in the field or in a control room
      Select options
    • Compare

      ST13C-SIP

      • Configuration software
      • USB isolator
      • Two USB cables
      • One kit recommended per customer
         
      Select options
    • Compare

      ST13x-Config/Cal

      Factory custom configuration/calibration service. Specify input type, input/output zero and full-scale values, filtering, and sensor fault settings on order.
      Select options
    • Compare

      USB Cables

      4001-112: USB cable, 1 meter, with Type A to Type B plugs. 4001-113: USB cable, 1 meter, with Type A to Mini-B plugs. 5028-565: USB-OTG cable, 6 inches
      Select options
  • Additional information

    Additional information

    Weight 5 oz
    Dimensions 2 × 1 × 2 in
    Part Number

    ST131-0600: 100 ohm Pt RTD input, CE compliant, ST131-0610: 100 ohm Pt RTD input, CE compliant, plus UL/cUL Class 1 Div 2 Zone 2 approval and ATEX Certified.

    Configuration

    Factory Calibration, USB Configuration, Windows Software Configuration

    Product Series

    ST130 Series