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Product short description:
  • TC type J, K, T, R, S, E, B, and N or ±100mV input
  • 1500V isolation
  • 4 to 20mA DC output
  • USB-configured

The ST133 is a low-cost two-wire transmitter that isolates and 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.

 

 

ST133: Isolated Transmitter; Thermocouple/mV Input Head-Mount Transmitter Description

The ST133 is a low-cost two-wire transmitter that isolates and 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.

High-voltage isolation separates the input from the output circuit. Isolation protects from surges, reduces noise, and eliminates ground loop errors. 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.

Performance Specifications

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, -210 to 760°C, upscale fault, 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 (24mA) or downscale (3.3mA) operation.

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

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

Resolution: Millivolt input: 0.0025% (1 part in 40,000). 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 – 12V) / 0.024A.
Rload = 0 to 500 ohms @ 24V DC.

Output Response Time (for step input change)

Time to reach 98% of final output value (typical)
No filtering                    90 to 125ms
Low filter                       240 to 420ms
Medium filter               550 to 1020ms
High filter                     900 to 1500ms

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: 12-32V DC SELV (Safety Extra Low Voltage), 24mA max.

Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.

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)
  • 1500V input isolation
  • 24-bit A/D micro-controller
  • High accuracy, linearity, stability, and reliability
  • Low temperature drift (<75ppm/°C)
  • Fast response time (as low as 90ms)
  • User selectable filtering (none, low, med., high)
  • 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? | Whitepaper (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 | App Note
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 Measurement Errors in Thermocouple to Transmitter Connections | Whitepaper (Log in to view the file)
How To Prevent Temperature Measurement Errors It will give you a keen understanding of the three basic laws of thermocouples: Homogeneous materials, Intermediate Metals, and Successive/Intermediate Temperatures. It is helpful in weeding out potential sources of error in a thermocouple measurement system.
How to use Thermocouples for Temperature Measurement | Whitepaper (Log in to view the file)
The Basics of Temperature Measurement Using Thermocouples Choosing a temperature sensor for an application is not as simple as picking a thermocouple type with a compatible temperature range. You must give consideration to the sensor material type, the application temperature range, the relative sensitivity of the sensor, the limitations of its insulation material, and its...

Specifications

Manuals

ST133 User Manual (Log in to download the file)

ST132 and ST133 Configuration Software (Log in to download the file)
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    • Ideal for mounting in the field or in a control room
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    ST13C-SIP

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    • Two USB cables
    • One kit recommended per customer
       
    $190
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    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.    
    $110
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Additional information

Weight 8 oz
Dimensions 4 × 4 × 2 in
Part Number

ST133-1610: 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

    ST133: Isolated Transmitter; Thermocouple/mV Input Head-Mount Transmitter Description

    The ST133 is a low-cost two-wire transmitter that isolates and 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.

    High-voltage isolation separates the input from the output circuit. Isolation protects from surges, reduces noise, and eliminates ground loop errors. 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.

    Performance Specifications

    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, -210 to 760°C, upscale fault, 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 (24mA) or downscale (3.3mA) operation.

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

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

    Resolution: Millivolt input: 0.0025% (1 part in 40,000). 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 – 12V) / 0.024A.
    Rload = 0 to 500 ohms @ 24V DC.

    Output Response Time (for step input change)

    Time to reach 98% of final output value (typical)
    No filtering                    90 to 125ms
    Low filter                       240 to 420ms
    Medium filter               550 to 1020ms
    High filter                     900 to 1500ms

    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: 12-32V DC SELV (Safety Extra Low Voltage), 24mA max.

    Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.

    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)
    • 1500V input isolation
    • 24-bit A/D micro-controller
    • High accuracy, linearity, stability, and reliability
    • Low temperature drift (<75ppm/°C)
    • Fast response time (as low as 90ms)
    • User selectable filtering (none, low, med., high)
    • 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? | Whitepaper (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 | App Note
    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 Measurement Errors in Thermocouple to Transmitter Connections | Whitepaper (Log in to view the file)
    How To Prevent Temperature Measurement Errors It will give you a keen understanding of the three basic laws of thermocouples: Homogeneous materials, Intermediate Metals, and Successive/Intermediate Temperatures. It is helpful in weeding out potential sources of error in a thermocouple measurement system.
    How to use Thermocouples for Temperature Measurement | Whitepaper (Log in to view the file)
    The Basics of Temperature Measurement Using Thermocouples Choosing a temperature sensor for an application is not as simple as picking a thermocouple type with a compatible temperature range. You must give consideration to the sensor material type, the application temperature range, the relative sensitivity of the sensor, the limitations of its insulation material, and its...
  • Specs & Data Sheets

    Specifications

    Manuals

    ST133 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
      $15$155
      Select options
    • Compare

      ST13C-SIP

      • Configuration software
      • USB isolator
      • Two USB cables
      • One kit recommended per customer
         
      $190
      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.    
      $110
      Select options
  • Additional information

    Additional information

    Weight 8 oz
    Dimensions 4 × 4 × 2 in
    Part Number

    ST133-1610: CE compliant, click to see all approvals/certifications below

    Configuration

    Factory Calibration, USB Configuration, Windows Software Configuration

    Product Series

    ST130 Series

    Power

    Loop Power