Home » Signal Conditioners & Network I/O
Acromag remote I/O modules feature signal conditioners and network I/O  for a broad range of monitoring and control operations where controllers communicate with instrumentation on the plant floor or in the field. Signal Conditioners include signal transmitters, signal isolators, 4-20mA signal splitters, limit alarms and computation modules. These signal conditioners input voltage, current, thermocouple, RTD, frequency, thermistor, load cell, potentiometer, and discrete sensors. These signal conditioners output DC voltage and current, relay, frequency, pulse width modulation and display/readout. Ethernet remote I/O modules communicate via Ethernet/IP, Modbus TCP/IP, Modbus UDP/IP, and Profinet.

Showing 1–16 of 24 results

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    DT233: Thermocouple / milliVolt Input Two-Wire Dual Transmitter

    • Dual channels
    • Universal thermocouple, mV input
    • 4-20mA outputs (sink/source)
    • 7-32V DC loop/local
    The DT233 model is a dual two-wire transmitter that isolates and converts millivolt or thermocouple sensor inputs to proportional 4-20mA control signals. Power is received from the output loop current.

    Click here to watch a short video highlighting the features of the DT233.

     
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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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    DT235: RTD / Resistance Input Two-Wire Dual Transmitter

    • Dual channels
    • RTD (Pt, Ni, Cu), 0-4500 ohm inputs
    • 4-20mA output (sink/source)
    • 7-32V DC loop power
    The DT235 model is a two-wire dual transmitter that isolates and converts RTD or linear resistance sensor inputs to a proportional 4-20mA control signal.

    Click here to watch a short video highlighting the features of the DT235.

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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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    655T, 656T: Single or Dual Channel, Thermocouple/milliVolt Input, Loop-powered Transmitter

    • TC (types J, K T, R, S, E, B, N), ±1V DC, selectable range/type input
    • 4 to 20mA DC output
    • 12-50V DC from output loop power
    • DIP-switch configuration, signal linearizer, push-button calibration
    These units accept universal thermocouple and millivolt input signals, provide isolation, and output proportional DC current signals. The output can also be linearized to the input sensor signal.  
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    657T, 658T: Single or Dual Channel, RTD Input, Loop-powered Transmitter

    • 100 ohm Pt, 120 ohm Ni, 10 ohm Cu (selectable type) input
    • 4 to 20mA DC output
    • 12-50V DC from output loop power
    • DIP-switch configuration, push-button calibration
    These units accept universal RTD or resistance input signals and output proportional DC current signals. The output can also be linearized to the input sensor signal.
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    671T, 672T, 674T: Multi-Channel, Two-Wire Isolators

    • DC current input
    • Single, dual, or quad I/O loop-powered isolators
    These units receive 4-20mA process current inputs and provide isolated 4-20mA output signals. Power is derived from the input signal current. Each channel operates independently and is isolated from the others to prevent interaction between channels.
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    SP233: Two-Wire Thermocouple / milliVolt Input Signal Splitter

    • Universal thermocouple or ±100mV input
    • 4-20mA outputs (sink/source)
    • 7-32V DC Loop/local power
    The SP233 model is a high-performance signal splitter that converts one millivolt or thermocouple sensor input into two proportional isolated 4-20mA control signals. Power is received from one or both output loop currents. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP236: Two-Wire Current / milliVolt Input Signal Splitter

    • DC current and low voltage input
    • 4-20mA outputs (sink/source)
    • 7-32V DC loop power
    The SP236 model is a high-performance signal splitter that converts one DC current or millivolt input into two isolated proportional 4-20mA control signals. Power is received from one or both output loop currents. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP237: Two-Wire Process Voltage Input Signal Splitter

    • Multi-range ±1V, ±5V, or ±10V input
    • 4-20mA outputs (sink/source)
    • 7-32V DC loop power
    The SP237 model is a high-performance signal splitter that converts one process-level DC voltage input into two proportional isolated 4-20mA control signals. Power is received from one or both output loop currents. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP238: Two-Wire High Voltage Input Signal Splitter

    • Multi-range ±15V, ±75V, or ±150V input
    • 4-20mA outputs (sink/source)
    • 7-32V DC loop/local power
    The SP238 model is a high-performance signal splitter that converts one high-level DC voltage input into two proportional isolated 4-20mA control signals. power is received from one or both output loop currents. Click here to watch a short video highlighting the features of the Acromag SP Series.
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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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Signal Conditioning Selection Guide Videos

Welcome to our Signal Conditioning Selection Guide Videos. As a business with many helpful products to offer, we know it can be difficult to find which one you need. This quick selection guide should help point you in the right direction. Choose which video corresponds to your power needs, and the guide will show you which Acromag modules will work with your input.

Learn more in this whitepaper: What is Ethernet/IP?

Output Loop Powered Transmitters Video

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Alarms