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

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
II 3 G Ex nA IIC T4 Gc -40°C < Ta < +80°C

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
WHITEPAPER: The Importance of Signal Isolation (Log in to view the file)

Specifications

Manuals

ST132 User Manual (Log in to download the file)

Brochures

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
    $10$140
    Select options
  • Compare

    ST13C-SIP

    • Configuration software
    • USB isolator
    • Two USB cables
    • One kit recommended per customer
    $170
    Select options
  • Compare

    USB Isolator

    • USB-powered, USB 2.0 and 1.1 compatible
    • 1500V AC / 2100V DC isolation
    • No drivers required
    $99
    Select options

Additional information

Weight 8 oz
Dimensions 2.4 × 1.85 × 0.925 in
Part Number

USB-Isolator: includes USB cable

  • Description

    This compact, industrial-grade isolator provides a high-voltage isolation barrier between a computer and a connected USB device.

    The isolation protects equipment from electrical surges and transient voltage spikes. It also eliminates ground loop currents flowing between the PC and peripherals which can cause damage and inaccurate measurements. Additionally, isolation minimizes conducted noise from static discharge, magnetic fields, and radio frequency interference.

    Acromag’s USB isolator is very easy to use. The isolator inserts in-line with the USB connection and operates transparently. No special software drivers are required. The unit receives power from the PC’s USB port and isolates that power to the connected device. High noise immunity and low radiated emissions ensure reliable data transfer in sensitive applications.

  • 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

    WHITEPAPER: The Importance of Signal Isolation (Log in to view the file)
  • Specs & Data Sheets

    Specifications

    Manuals

    ST132 User Manual (Log in to download the file)

    Brochures

  • 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
      $10$140
      Select options
    • Compare

      ST13C-SIP

      • Configuration software
      • USB isolator
      • Two USB cables
      • One kit recommended per customer
      $170
      Select options
    • Compare

      USB Isolator

      • USB-powered, USB 2.0 and 1.1 compatible
      • 1500V AC / 2100V DC isolation
      • No drivers required
      $99
      Select options
  • Additional information

    Additional information

    Weight 8 oz
    Dimensions 2.4 × 1.85 × 0.925 in
    Part Number

    USB-Isolator: includes USB cable