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Product short description:
  • Universal thermocouple (8 types) or ±100mV input
  • 4-20mA output
  • Loop-powered, 7-32V DC

The ST132 is a low-cost two-wire transmitter that converts a millivolt or thermocouple sensor input to a proportional 4-20mA control signal. Power is received from the output loop current. The transmitter performs signal linearization, cold-junction compensation, and lead-break detection functions.

 

ST132: Thermocouple/milliVolt Input Head-mount Transmitter Description

The ST132 is a low-cost two-wire transmitter that converts a millivolt or thermocouple sensor input to a proportional 4-20mA control signal. Power is received from the output loop current. The transmitter performs signal linearization, cold-junction 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 measurement device. These transmitters can 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.

ST132 software allows you to configure transmitters offline, save the file, and download settings into units later, at your convenience. Download for free from the software tab on this page.

Performance Specifications

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

USB Interface

USB Connector: USB Mini-B type socket, 5-pin.

USB Data Rate: 12Mbps. USB v1.1 and 2.0 compatible.

USB Transient Protection: Transient voltage suppression on power and data lines.

USB Cable Length: 5.0 meters maximum.

Driver: Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system.

Input

Default Configuration/Calibration:
Input: TC J, -40°F to 176°F (-40°C to 80°C), upscale break, high filter..

Output: 4 to 20mA.

Input Ranges and Accuracy

Input                          Range                                   Accuracy
TC J          -210 to 760°C (-346 to 1400°F)           ±0.5°C
TC K         -200 to 1372°C (-328 to 2502°F)         ±0.5°C
TC T          -260 to 400°C (-436 to 752°F)             ±0.5°C
TC R            -50 to 1768°C (-58 to 3214°F)           ±1.0°C
TC S            -50 to 1768°C (-58 to 3214°F)           ±1.0°C
TC E         -200 to 1000°C (-328 to 1832°F)         ±0.5°C
TC B           260 to 1820°C (500 to 3308°F)          ±1.0°C
TC N         -230 to 1300°C (-382 to 2372°F)        ±1.0°C
mV            -100 to 100mV                                          ±0.1mV
Error includes the effects of repeatability, terminal point conformity, and linearization at 25°C operating ambient temperature.

Thermocouple Reference (Cold Junction Compensation): ±0.1°C typical, ±0.3°C maximum at 25°C.

Ambient Temperature Effect: Better than ±75ppm/°C (±0.0075%/°C).

Zero Scaling Adjust: 0 to 95% of range, typical.

Full Scale Adjust: 5 to 100% of full scale range, typical.

Lead Break (Sensor Burnout) Detection: Configurable for either upscale or downscale.

Thermocouple Input Bias Current: ±250nA typical (TC break).

Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 5.6V clamp level typical.

Input Filter Bandwidth: -3dB at 55Hz, typical, normal mode filter.

Resolution
milliVolt input: 0.005% (1 part in 20,000).
Thermocouple input: 0.1°C.

Input Filter: Normal mode filtering, plus selectable digital filtering settings (none, low, medium, high) optimized and fixed per input range within the A/D converter.

Noise Rejection (Normal Mode): 75dB @ 60Hz, typical with 100 ohm input unbalance.

Output

Output Range: 4 to 20mA DC.

Output Compliance
Rload = (Vsupply – 7V) / 0.02A.

Rload = 0 to 850 ohms @ 24V DC.

Output Response Time (for step input change): Time to reach 98% of final output value ranges from 8ms (with no filtering) to 800ms (with high filtering),

Environmental

Operating temperature: -40 to 80°C (-40° to 176°F).

Storage temperature: -40 to 85°C (-40 to 185°F).

Relative Humidity: 5 to 95% non-condensing.

Power Requirement: 7-32V DC SELV (Safety Extra Low Voltage), 25mA maximum.

Isolation: Not isolated.

Shock and Vibration Immunity
Vibration: 5g, per IEC 60068-2-64.

Shock: 50g, per IEC 60068-2-27.

Electromagnetic Compatibility (EMC) Compliance
Radiated Emissions: BS EN 61000-6-4, CISPR 16.

RFI: BS EN 61000-6-2, IEC 61000-4-3.

Conducted RFI: BS EN 61000-6-2, IEC 61000-4-6.

ESD: BS EN 61000-6-2, IEC 61000-4-2.

EFT: BS EN 61000-6-2, IEC 61000-4-4.

Surge Immunity: BS EN 61000-6-2, IEC 61000-4-5.

Approvals
CE compliant. UL/cUL listings. ATEX Certified.

Designed for Class I; Division 2; Groups ABCD; Zone 2.

Physical

General: General purpose enclosure with potted circuit designed for mounting in DIN Form B connection heads.

Case Material: Self-extinguishing polycarbonate ABS plastic, UL94 V-0 rated base material. USB dust cap material is Santoprene, 251-70W232.

I/O Connectors
Barrier strip type, captive screw terminals.

Wire range: AWG #14-28 solid or stranded.

Shipping Weight: 0.5 pounds (0.22 Kg) packed.

 

  • Easy setup and digital calibration via USB with Windows configuration software
  • Flexible thermocouple or millivolt input ranges(TC Type J, K, T, R, S, E, B, N or ±100mV)
  • 24-bit A/D micro-controller
  • High accuracy, linearity, stability, and reliability
  • Low temperature drift (<75ppm/°C)
  • Fast response time (as low as 8ms)
  • Supports reverse-acting (inverse) output
  • Selectable upscale or downscale operation for sensor errors and lead-break detection
  • Non-polarized output/power connection
  • Mounts in DIN Form B sensor heads
  • Shock (50g) and vibration (5g) resistant
  • 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. , Ex II 3 G Ex nA IIC T4 Gc -40°C Ta +80°C certified

 

Why Do I Need Electrical Isolation? - 8500988 (Log in to view the file)
Why do we need signal isolation? Acromag is in the business of signal conditioning. We manufacture circuits that amplify, isolate, filter, and convert one signal form to another. Most of these circuits also provide electrical isolation. However, added isolation has a cost. Thus, sometimes customers either question their need for isolation or fail to recognize...
How to use Thermocouple Transmitters to Monitor Temperatures in Paint Systems - 8400818
This document illustrates using Acromag’s TT330 Series to monitor high temperatures in an automotive paint curing oven and transmit to the existing PLC 4-20mA input card/software setup. Defining the Problem The area around an auto manufacturer’s paint curing ovens is at elevated temperatures affecting the performance of locally installed instrumentation. Placing signal conditioners rated for...
How to Minimize Thermocouple to Transmitter Measurement Errors - 8500926 (Log in to view the file)
Preventing Temperature Measurement Error in Thermocouple to Transmitter Connections The nature of thermocouple (TC) circuits is that they’re prone to produce error when mating them to a measurement device; unless you have some insight into how these TCs and their components work. This paper reviews thermocouple behavior and outlines common problems encountered when connecting them...
How to use Thermocouples for Temperature Measurement - 8500911 (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 Thermocouples You are probably somewhat familiar with the thermocouple, or...

Specifications

Manuals

ST132 User Manual (Log in to download the file)

ST132 and ST133 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

    USB Isolator

    • USB-powered, USB 2.0 and 1.1 compatible
    • 1500V AC / 2100V DC isolation
    • No drivers required
    This compact, industrial-grade isolator provides a high-voltage isolation barrier between a computer and a connected USB device.    
    Select options

Additional information

Weight N/A
Dimensions N/A
Part Number

ST132-0610: CE compliant, click to see all approvals/certifications below

Configuration

Factory Calibration, USB Configuration, Windows Software Configuration

Product Series

ST130 Series

Power

Loop Power

  • Description

    ST132: Thermocouple/milliVolt Input Head-mount Transmitter Description

    The ST132 is a low-cost two-wire transmitter that converts a millivolt or thermocouple sensor input to a proportional 4-20mA control signal. Power is received from the output loop current. The transmitter performs signal linearization, cold-junction 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 measurement device. These transmitters can 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.

    ST132 software allows you to configure transmitters offline, save the file, and download settings into units later, at your convenience. Download for free from the software tab on this page.

    Performance Specifications

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

    USB Interface

    USB Connector: USB Mini-B type socket, 5-pin.

    USB Data Rate: 12Mbps. USB v1.1 and 2.0 compatible.

    USB Transient Protection: Transient voltage suppression on power and data lines.

    USB Cable Length: 5.0 meters maximum.

    Driver: Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system.

    Input

    Default Configuration/Calibration:
    Input: TC J, -40°F to 176°F (-40°C to 80°C), upscale break, high filter..

    Output: 4 to 20mA.

    Input Ranges and Accuracy

    Input                          Range                                   Accuracy
    TC J          -210 to 760°C (-346 to 1400°F)           ±0.5°C
    TC K         -200 to 1372°C (-328 to 2502°F)         ±0.5°C
    TC T          -260 to 400°C (-436 to 752°F)             ±0.5°C
    TC R            -50 to 1768°C (-58 to 3214°F)           ±1.0°C
    TC S            -50 to 1768°C (-58 to 3214°F)           ±1.0°C
    TC E         -200 to 1000°C (-328 to 1832°F)         ±0.5°C
    TC B           260 to 1820°C (500 to 3308°F)          ±1.0°C
    TC N         -230 to 1300°C (-382 to 2372°F)        ±1.0°C
    mV            -100 to 100mV                                          ±0.1mV
    Error includes the effects of repeatability, terminal point conformity, and linearization at 25°C operating ambient temperature.

    Thermocouple Reference (Cold Junction Compensation): ±0.1°C typical, ±0.3°C maximum at 25°C.

    Ambient Temperature Effect: Better than ±75ppm/°C (±0.0075%/°C).

    Zero Scaling Adjust: 0 to 95% of range, typical.

    Full Scale Adjust: 5 to 100% of full scale range, typical.

    Lead Break (Sensor Burnout) Detection: Configurable for either upscale or downscale.

    Thermocouple Input Bias Current: ±250nA typical (TC break).

    Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 5.6V clamp level typical.

    Input Filter Bandwidth: -3dB at 55Hz, typical, normal mode filter.

    Resolution
    milliVolt input: 0.005% (1 part in 20,000).
    Thermocouple input: 0.1°C.

    Input Filter: Normal mode filtering, plus selectable digital filtering settings (none, low, medium, high) optimized and fixed per input range within the A/D converter.

    Noise Rejection (Normal Mode): 75dB @ 60Hz, typical with 100 ohm input unbalance.

    Output

    Output Range: 4 to 20mA DC.

    Output Compliance
    Rload = (Vsupply – 7V) / 0.02A.

    Rload = 0 to 850 ohms @ 24V DC.

    Output Response Time (for step input change): Time to reach 98% of final output value ranges from 8ms (with no filtering) to 800ms (with high filtering),

    Environmental

    Operating temperature: -40 to 80°C (-40° to 176°F).

    Storage temperature: -40 to 85°C (-40 to 185°F).

    Relative Humidity: 5 to 95% non-condensing.

    Power Requirement: 7-32V DC SELV (Safety Extra Low Voltage), 25mA maximum.

    Isolation: Not isolated.

    Shock and Vibration Immunity
    Vibration: 5g, per IEC 60068-2-64.

    Shock: 50g, per IEC 60068-2-27.

    Electromagnetic Compatibility (EMC) Compliance
    Radiated Emissions: BS EN 61000-6-4, CISPR 16.

    RFI: BS EN 61000-6-2, IEC 61000-4-3.

    Conducted RFI: BS EN 61000-6-2, IEC 61000-4-6.

    ESD: BS EN 61000-6-2, IEC 61000-4-2.

    EFT: BS EN 61000-6-2, IEC 61000-4-4.

    Surge Immunity: BS EN 61000-6-2, IEC 61000-4-5.

    Approvals
    CE compliant. UL/cUL listings. ATEX Certified.

    Designed for Class I; Division 2; Groups ABCD; Zone 2.

    Physical

    General: General purpose enclosure with potted circuit designed for mounting in DIN Form B connection heads.

    Case Material: Self-extinguishing polycarbonate ABS plastic, UL94 V-0 rated base material. USB dust cap material is Santoprene, 251-70W232.

    I/O Connectors
    Barrier strip type, captive screw terminals.

    Wire range: AWG #14-28 solid or stranded.

    Shipping Weight: 0.5 pounds (0.22 Kg) packed.

     

  • Features & Benefits

    • Easy setup and digital calibration via USB with Windows configuration software
    • Flexible thermocouple or millivolt input ranges(TC Type J, K, T, R, S, E, B, N or ±100mV)
    • 24-bit A/D micro-controller
    • High accuracy, linearity, stability, and reliability
    • Low temperature drift (<75ppm/°C)
    • Fast response time (as low as 8ms)
    • Supports reverse-acting (inverse) output
    • Selectable upscale or downscale operation for sensor errors and lead-break detection
    • Non-polarized output/power connection
    • Mounts in DIN Form B sensor heads
    • Shock (50g) and vibration (5g) resistant
    • 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. , Ex II 3 G Ex nA IIC T4 Gc -40°C Ta +80°C certified

     

  • Tech Papers

    Why Do I Need Electrical Isolation? - 8500988 (Log in to view the file)
    Why do we need signal isolation? Acromag is in the business of signal conditioning. We manufacture circuits that amplify, isolate, filter, and convert one signal form to another. Most of these circuits also provide electrical isolation. However, added isolation has a cost. Thus, sometimes customers either question their need for isolation or fail to recognize...
    How to use Thermocouple Transmitters to Monitor Temperatures in Paint Systems - 8400818
    This document illustrates using Acromag’s TT330 Series to monitor high temperatures in an automotive paint curing oven and transmit to the existing PLC 4-20mA input card/software setup. Defining the Problem The area around an auto manufacturer’s paint curing ovens is at elevated temperatures affecting the performance of locally installed instrumentation. Placing signal conditioners rated for...
    How to Minimize Thermocouple to Transmitter Measurement Errors - 8500926 (Log in to view the file)
    Preventing Temperature Measurement Error in Thermocouple to Transmitter Connections The nature of thermocouple (TC) circuits is that they’re prone to produce error when mating them to a measurement device; unless you have some insight into how these TCs and their components work. This paper reviews thermocouple behavior and outlines common problems encountered when connecting them...
    How to use Thermocouples for Temperature Measurement - 8500911 (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 Thermocouples You are probably somewhat familiar with the thermocouple, or...
  • Specs & Data Sheets

    Specifications

    Manuals

    ST132 User Manual (Log in to download the file)

  • Software

    ST132 and ST133 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

      USB Isolator

      • USB-powered, USB 2.0 and 1.1 compatible
      • 1500V AC / 2100V DC isolation
      • No drivers required
      This compact, industrial-grade isolator provides a high-voltage isolation barrier between a computer and a connected USB device.    
      Select options
  • Additional information

    Additional information

    Weight N/A
    Dimensions N/A
    Part Number

    ST132-0610: CE compliant, click to see all approvals/certifications below

    Configuration

    Factory Calibration, USB Configuration, Windows Software Configuration

    Product Series

    ST130 Series

    Power

    Loop Power