Advantech ADAM-4018+| 8-Channel Thermocouple Input Module

Advantech ADAM-4018+| 8-Channel Thermocouple Input Module

The ADAM-4018+ is designed for distributed temperature acquisition where multiple thermocouple sensors must be monitored accurately over long distances. It provides 8 differential input channels with channel independent configuration, allowing flexible deployment across multi zone processes and equipment. With support for both Modbus RTU and ASCII command protocols, the module integrates easily with PLCs, SCADA systems, and industrial gateways that standardize on RS 485 communications.

For robust industrial operation, the ADAM-4018+ includes a watchdog timer for system and communication monitoring and provides strong electrical isolation to protect measurement integrity. It delivers 16 bit resolution and typical accuracy rated at ±0.1 percent or better in voltage mode and ±0.2 percent or better in current mode, with a total sampling rate of 10 samples per second across all channels. Built in TVS and ESD protection and a 3,000 VDC isolation rating improve survivability in electrically noisy environments where thermocouple wiring can be exposed to transients and interference.

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SKU ADAM-4018+-BE Category

ADAM-4018+ Functional Highlights For Industrial Temperature Monitoring

  1. Eight Differential Thermocouple Input Channels For Multi Zone Systems

    • Provides 8 differential input channels for thermocouple measurement.

    • Channel independent configuration supports flexible multi sensor deployments.

    • Differential wiring improves noise immunity on long thermocouple runs.

  2. Broad Thermocouple Type Coverage For Industrial Temperature Ranges

    • Supports thermocouple types J, K, T, E, R, S, B, and N.

    • Enables measurement from low temperature processes to high temperature furnaces depending on type.

    • Suitable for mixed thermocouple installations across different zones.

  3. Thermocouple Burnout Detection For Better Fault Identification

    • Burnout detection is supported for all thermocouple inputs.

    • Helps identify broken sensors or open wiring conditions quickly.

    • Improves uptime through faster troubleshooting and maintenance response.

  4. Modbus RTU And ASCII Command Support Over RS 485

    • Supports Modbus RTU for standardized industrial control integration.

    • Supports ASCII command mode for simpler serial control applications.

    • Designed for RS 485 multi drop networks used in distributed I O systems.

  5. High Resolution Measurement With Industrial Grade Accuracy

    • Provides 16 bit resolution for detailed temperature acquisition.

    • Total sampling rate supports 10 samples per second across the module.

    • Typical accuracy is rated at ±0.1 percent or better in voltage mode and ±0.2 percent or better in current mode.

  6. Isolation And Protection For Harsh Electrical Conditions

    • Isolation voltage is rated at 3,000 VDC.

    • Overvoltage protection supports up to ±35 VDC.

    • Built in TVS and ESD protection improves robustness against transient events.

ADAM-4018+ Technical Specifications Table For Modbus Thermocouple Inputs

SpecificationDetails
Product ModelADAM-4018+
Module Type8 channel Thermocouple Input Module with Modbus
Network InterfaceRS 485
Supported ProtocolsASCII command and Modbus RTU
Input Channels8 differential channels
Channel IndependentYes
Input TypesThermocouple, mV, V, mA
Input Ranges0 to 100 mV, 0 to 500 mV, 0 to 1 V, 0 to 2.5 V, 0 to 5 V, 0 to 10 V, plus or minus 100 mV, plus or minus 500 mV, plus or minus 1 V, plus or minus 2.5 V, plus or minus 5 V, plus or minus 10 V, plus or minus 20 mA, 0 to 20 mA, 4 to 20 mA
Thermocouple TypesJ, K, T, E, R, S, B, N
Temperature RangesJ 0 to 760°C, K 0 to 1370°C, T -100 to 400°C, E 0 to 1000°C, R 500 to 1750°C, S 500 to 1750°C, B 500 to 1800°C, N -200 to 1300°C
Burnout Detection4 to 20 mA and all thermocouple types
Input ImpedanceVoltage 20 MΩ, Current 120 Ω
Resolution16 bit
Sampling Rate10 samples per second total
Isolation Voltage3,000 VDC
Overvoltage Protection±35 VDC
CMR At 50/60 Hz120 dB
NMR At 50/60 Hz100 dB
Span Drift±25 ppm per °C typical
Zero Drift±6 µV per °C
Watchdog TimerSystem and communication, 1.6 second
Power InputUnregulated 10 to 30 VDC
Power Consumption1.0 W at 24 VDC
Connectors2 plug in terminal blocks, #14 to 22 AWG
Operating Temperature-10 to 70°C
Operating Humidity5 to 95 percent RH
Storage Temperature-25 to 85°C
Ordering InformationADAM-4018+-F

Suitable Applications For ADAM-4018+ Thermocouple Input Modules With Modbus

The ADAM-4018+ is well suited for distributed multi point temperature monitoring where thermocouple sensors must be acquired over RS 485 networks with Modbus RTU. Its broad thermocouple support, channel independent configuration, and built in protection make it a strong choice for remote industrial temperature measurement.

  • Multi zone furnace, kiln, and oven temperature monitoring

  • Heat treatment and thermal processing lines using thermocouples

  • Process skids requiring Modbus RTU temperature acquisition over RS 485

  • Energy systems and boilers monitoring high temperature points

  • Plastics and extrusion equipment monitoring barrel and die temperatures

  • Remote panels where thermocouple wiring runs are long and noise susceptible

  • Industrial SCADA temperature trending using Modbus RTU networks

  • OEM packaged equipment requiring compact thermocouple input modules

ADAM 4018+ Datasheet

Additional information

Weight2 lbs

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