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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 17–32 of 37 results

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    801A Universal TC/RTD/mV Input Intelligent Alarm

    • Thermocouple (J, K, T, R, S, E, B, N), RTD (Pt, Ni, Cu), millivolt (±100mV DC), resistance (0 to 500 ohms) input
    • Single or dual mechanical relay alarm outputs
    • 10-36V DC power
    • Software configured
    • Multi-function alarms (limit, window, deviation, rate-of-change, peak/valley detection)
    • On/off controller capability
    IntelliPack alarms compare inputs against user-defined limit set-points to control built-in relays.
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    801T: Universal Input Intelligent Temperature Transmitter

    • Thermocouple, RTD, milliVolt, and Resistance Input
    • 0 to 20mA DC, 0 to 10V DC output
    • Limit Alarm
    • 10-36V DC power
    • Software configured
    • Performs linearization, square root extraction, and optional limit alarm functions
    These transmitters isolate and convert sensor inputs to noise-free, proportional DC current or voltage output signals. An optional relay output adds a local limit alarm function.
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    811T: DC Voltage/Current Input Intelligent Transmitter

    • ±100V or 0 to 22mA DC input ranges (AC current with optional sensor)
    • 0 to 20mA DC, 0 to 10V DC output
    • Mechanical relay alarm (25V @ 5A)
    • 10-36V DC power
    • Software configured, performs linearization, square root extraction, and optional limit alarm functions
    These transmitters isolate and convert sensor inputs to noise-free, proportional DC current or voltage output signals. An optional relay output adds a local limit alarm function.
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    822A Dual Thermocouple/mV Input Intelligent Alarm

    • 2 input channels, thermocouple (types J, K, T, R, S, E, B, N), or millivolt (±100mV DC) input
    • Dual mechanical relays output
    • 10-36V DC power
    • Software configured; multi-function alarms (limit, window, deviation, rate-of-change, peak/valley detection); on/off controller capability
    IntelliPack alarms compare inputs against user-defined limit set-points to control built-in relays.
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    924MB: Thermocouple/milliVolt Modbus-RTU Input Module with Limit Alarms

    • 4 input channels, thermocouple (types J, K, T, R, S, E, B, N) or millivolt (±100mV DC) input
    • 4 alarm channels, open drain MOSFETS (1A DC loads, 0 to 35V DC)
    • 10 to 36V DC, 24V AC power
    • Modbus-RTU high-speed RS-485
    This signal conditioner is a four-channel analog input module with four discrete outputs. It filters and linearizes thermocouple inputs while providing isolation between input, output, power, and network circuits. Cold junction compensation and upscale/downscale sensor break detection are standard.  
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    981PB, 982PB, 983PB: Profibus-DP 12-Channel Digital I/O

    • Active-Low Inputs, Sinking Outputs
    • 12 input channels, 0 to 35V DC range
    • 12 to 36V DC
    • High-speed RS-485
    These modules provide an isolated Profibus-DP network interface for twelve discrete input and/or output channels. The outputs provide direct on/off, high/low, or open/close control of industrial devices.
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    DT337: Medium DC Voltage Input Four-Wire Dual Transmitter

    • Dual channels
    • ±1V, ±10V inputs
    • 0-20mA, ±10V outputs
    • 6-32V DC local/bus power
    The DT337 model is a four-wire dual transmitter that isolates and converts process-level DC voltage inputs to proportional control signals. Each channel supports DC current or voltage output.

    Click here to watch a short video highlighting the features of the DT337.

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    DT338: High DC Voltage Input Four-Wire Dual Transmitter

    • Dual channels
    • ±15V, ±150V inputs
    • 0-20mA, ±10V outputs
    • 6-32V DC local/bus power
    The DT338 model is a four-wire dual transmitter that isolates and converts high-level DC voltage inputs to proportional control signals. Each channel supports DC current or voltage output. Click here to watch a short video highlighting the features of the DT338.
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    Profibus-DP GSD Files

    • Download GSD files from the Software Tab
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    SP333: Four-Wire Thermocouple / milliVolt Splitter

    • Universal thermocouple or ±100mV input
    • 0-20mA, ±10V or 0-10V outputs
    • 6-32V DC external power
    The SP333 is a high-performance signal splitter that converts one millivolt or thermocouple input into two isolated proportional control signals. A variety of current and voltage output ranges are supported. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP336: Four-Wire Current / milliVolt Signal Splitter

    • DC current and low voltage input
    • 0-20mA, ±10V outputs
    • 6-32V DC external power
    The SP336 is a high-performance signal splitter that converts one DC current or millivolt input into two isolated proportional control signals. A variety of current and voltage output ranges are supported. Power connects on a terminal block, a rail bus, or both for redundancy. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP337: Four-wire Process Voltage Input Signal Splitter

    • Multi-range ±1V, ±5V, or ±10V input
    • 0-20mA, ±10V or 0-10V outputs
    • 6-32V DC external power
    The SP337 is a high-performance signal splitter that converts one process-level DC voltage input into two isolated proportional control signals. A variety of current and voltage output ranges are supported. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP338: Four-Wire High Voltage Input Signal Splitter

    • Multi-range ±15, ±75, or ±150V input
    • 0-20mA, ±10V or 0-10V outputs
    • 6-32V DC external power
    The SP338 is a high-performance signal splitter that converts one high-level DC voltage input into two isolated proportional control signals. A variety of current and voltage output ranges are supported. Click here to watch a short video highlighting the features of the Acromag SP Series.
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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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    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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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

DC Powered Transmitters Options Video

AC Powered Transmitters

Alarms