Signal Converters and Process Transmitters

Process signal transmitters and signal converters isolate, filter, amplify, and convert sensor signals to 4-20mA current or 0-10V signals for interfacing with controllers and other instrumentation. Select from 2-wire loop-powered 4-20mA transmitters, or 4-wire AC/DC-powered transmitters. Acromag offers 3- and 4-wire models with 4-20mA transmitters or voltage transmitters. DIN-rail and field-mount versions are available. Process transmitter configuration is easy with Windows® software, Agility® mobile app pushbuttons, switches, or pots for span/zero settings, depending on the series.

Showing 1–16 of 20 results

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    TT233: Thermocouple / milliVolt Input Two-Wire Transmitter

    • Universal TC type J, K, T, R, S, E, B, N or ±100mV input
    • 4-20mA ouput (sink/source)
    • 12-32 V DC loop/local power
    The TT233 model is a space-saving 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 or a DC supply when using a three-wire connection. Click here to watch a short AcroMaggie video highlighting the TT230 Series.        
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    TT236: Current / milliVolt Input Two-Wire Transmitter

    • Multi-range ±20mA or ±500mV input
    • 4-20mA ouput (sink/source)
    • 12-32 V DC loop/local power
    The TT236 model is a space-saving two-wire transmitter that isolates and converts a DC current or low voltage input to a proportional 4-20mA control signal. A single unit supports both voltage and current input for extra flexibility. Power is received from the output loop current or a DC supply when using a three-wire connection. Click here to watch a short AcroMaggie video highlighting the TT230 Series.
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    TT239: Frequency / Pulse / PWM Input, 12-32V DC Loop Power, 2-Wire Transmitter

    • Multi-range 0Hz to 100KHz frequency input
    • Multi-range 0Hz to 3KHz PWM input
    • 4-20mA output (sink/source)
    • 12-32V DC power
    The TT239 model is a space-saving two-wire transmitter that isolates and converts a frequency, pulse, or pulse-width modulation (PWM) input to a proportional 4-20mA signal. You can select to measure either the input frequency or the duty cycle. Power is received from the output loop current or a DC supply when using a three-wire connection. Click here to watch a short AcroMaggie video highlighting the TT230 Series.    
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    TT333: Thermocouple / milliVolt Input Four-wire Transmitter

    • Universal thermocouple / millivolt input
    • Universal current / voltage output
    • 12-32V DC local / bus power
    The TT333 model is a space-saving four-wire transmitter that isolates and converts a millivolt or thermocouple sensor input to a proportional control signal. DC current and voltage output are both supported on a single model. Click here to watch a short video highlighting the TT330 Series.    
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    TT336: Current/milliVolt Input, DC Power Transmitter

    • Multi-range ±20mA or ±500mV input
    • Universal current/voltage output
    • 12-32V DC power
    DC current and voltage output are both supported on a single model. An optional DIN rail bus can deliver primary or redundant power to multiple units without wiring. Click here to watch a short video highlighting the TT330 Series.  
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    TT339: Frequency / Pulse Input, 12-32V DC Local/Bus Power Transmitter

    • Multi-range 0Hz to 100KHz input
    • Universal current/voltage output
    • 12-32V DC local/bus power
    The TT339 model is a space-saving four-wire transmitter that isolates and converts a frequency or pulse input to a proportional control signal. DC current and voltage output are both supported on a single model. An optional DIN rail bus can deliver primary or redundant power to multiple units without wiring. Click here to watch a short video highlighting the TT330 Series.
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    TT231: RTD / Resistance Input Two-Wire Transmitter

    • 100 ohm Pt RTD or 0-900 ohm input
    • 4-20mA output (sink/source)
    • 12-32V DC loop/local power
    • USB configuration
    The TT231 model is a space-saving 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 or a DC supply when using a three-wire connection. Click here to watch a short AcroMaggie video highlighting the TT230 Series.
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    Agilityâ„¢ Config Tool (Tethered)

    • Tethered Agilityâ„¢ Config Tool mobile application
    • For Acromag SP Series Signal Splitters and most TT Series Transmitters
    • Download available on Google Play for free.
    • Download Windows configuration software from the software tab below.
    Read more
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    ST131: Transmitter, RTD Input, Loop-Powered

    • 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.
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    ST132: Thermocouple/milliVolt Input Head-mount Transmitter

    • 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.  
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    ST133: Isolated Transmitter; Thermocouple/mV Input

    • 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.    
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    TT234: Potentiometer / Thermistor Input, Two-Wire Transmitter

    • Potentometer / slidewire, thermister input
    • 4 to 20mA output (sink / source)
    • 12-32V DC loop / local power
    • USB configuration
    The TT234 model is a space-saving two-wire transmitter that isolates and converts a resistive sensor input to a proportional 4-20mA signal. Power is received from the output loop current or a DC supply when using a three-wire connection. Click here to watch a short AcroMaggie video highlighting the TT230 Series.
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    TT235: Isolated RTD Input, Loop Power, 2-Wire Transmitter

    • Selectable RTD or linear resistance input type or 0-500 ohm input
    • 4-20mA output (sink/source)
    • 12-32V DC loop/local power
    • USB configuration
    The TT235 model is a space-saving two-wire transmitter that isolates and converts an RTD sensor input to a proportional 4-20mA signal. Power is received from the output loop current or a DC supply when using a three-wire connection. Click here to watch a short AcroMaggie video highlighting the TT230 Series.
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    TT237: Voltage Input, Loop-Power, 2-Wire Transmitter

    • Multi-range ±1V, ±5V or ±10V input
    • 4-20mA output (sink/source)
    • 12-32 V loop power
    The TT237 model is a space-saving two-wire transmitter that isolates and converts a process level DC voltage input to a proportional 4-20mA control signal. A single unit supports multiple voltage input ranges for extra flexibility. Power is received from the output loop current or a local DC supply when using a three-wire connection. Click here to watch a short AcroMaggie video highlighting the TT230 Series.
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    TT238: High Voltage Input, Loop-Powered, 2-Wire Transmitter

    • Multi-range ±15V, ±75V or ±150V DC input
    • 4-20mA ouput (sink/source)
    • 12-32 V DC loop power
    The TT238 model is a space-saving two-wire transmitter that isolates and converts a high level DC voltage input to a proportional 4-20mA control signal. A single unit supports multiple voltage input ranges for extra flexibility. Power is received from the output loop current or a local DC supply when using a three-wire connection. Click here to watch a short AcroMaggie video highlighting the TT230 Series.
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    TT334: Potentiometer / Thermistor Input, Four-Wire Transmitter

    • Potentiometer / slidewire input
    • Universal current/voltage output
    • 12-32V DC local/bus power
    • USB configuration
    The TT334 model is a space-saving four-wire transmitter that isolates and converts a resistive sensor input to a proportional control signal. DC current and voltage output are both supported on a single model. Click here to watch a short video highlighting the TT330 Series.
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Signal Conditioners, Transmitters and Converters Continued

Green Separator Line

Acromag high-performance signal conditioner products include process transmitters4-20mA signal isolatorslimit alarmssignal splitters, and math computation modules. These products isolate, amplify, filter, condition, and convert measured signals from sensors and other instruments. The enhanced signal is ready for interfacing to your PLC, DCS, display, recorder, or other process control instrumentation.

Temperature transmitters convert thermocouple, RTD, and low-level temperature sensor signals to 4-20mA, 0-10V, or other DC voltage/current outputs. Acromag offers temperature transmitters in head-mount and DIN-rail form factors. Some temperature transmitters have software-configured universal input to convert a broad range of temperature sensor and other signals with a single unit.

See all signal conditioners and transmitters to choose the best solution for your application.

Signal Conditioning Functions:

  • Signal converter, linearizer, averager
  • Integrator, totalizer
  • Pulse counter, frequency measurement
  • Arithmetic calculation, Boolean logic
  • Limit alarm relay trip, window range, deviation, rate-of-change, peak/valley detection

Learn More About Transmitters

As your I/O experts, Acromag is here to help! Below are our most popular whitepapers related to our Signal Conditioning products. Find more application notes, white papers and support here: https://www.acromag.com/support/