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Product short description:
  •  Dual channels
  •  ±20mA, ±500mV inputs
  • 4-20mA outputs (sink/source)
  • 7-32V DC loop power

The DT236 model is a dual two-wire transmitter that isolates and converts DC current or low voltage inputs to proportional 4-20mA control signals. Power is received from the output loop current or a DC supply when using a three-wire connection.

Click here to watch a short video highlighting the features of the DT236.

 

DT236: Current / milliVolt Input Two-Wire Dual Transmitter Description

DT230 series signal conditioners provide two independent I/O channels in a single, space-saving unit. The DT236 model is a dual two-wire transmitter that isolates and converts DC current or low voltage inputs to proportional 4-20mA control signals. Power is received from the output loop current or a DC supply when using a three-wire connection.

High-voltage isolation separates all input and output circuits from each other. Isolation protects from surges, reduces noise, and helps eliminate ground loop errors.

Setup and calibration are fast and easy with a convenient USB connection to your PC and Acromag’s Windows configuration software. The Android app enables setup with mobile devices.

Advanced signal processing capabilities, variable range input/output, and convenient USB programming make this instrument very versatile. 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 ground loop error between a grounded PC and a grounded input signal, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a DT230 Series transmitter.

USB Interface

USB Connection
Type: USB Mini-B type socket, 5-pin
Data Rate: 12Mbps. USB v1.1 and 2.0 compatible
Maximum cable length: 5.0 meters
Transient voltage suppression on power and data lines.

Input (two channels)

Default Configuration/Calibration
Input: 4 to 20mA, medium filter
Output: 4 to 20mA

A/D Converters (ADC)
Two 24-bit Sigma Delta ADCs (only 16-bits used)

Input Ranges:
Path A: ±1mA, ±20mA, 0 to 11.17mA, 0-20mA, 4-20mA DC.
Path B: ±0.5V, 0-500mV DC.

Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C).

Scaling Adjust: Full range.

Input Impedance
Current input: 24.9 ohms.
Voltage input: 15M ohms.

Input Over-Voltage Protection: Bipolar Transient Voltage Suppression (TVS) and diode clamping.

Input Filter: RC filter plus variable digital filter (none, low, medium, high).

Input Bandwidth: -3dB @ 16Hz (no filtering).

Noise Rejection (@ 60Hz, no filter)
Common Mode: 93dB no filter (139dB high filter).
Normal Mode: 6dB no filter (>80dB high filter).

Output (two channels)

D/A Converters (DAC): Two 16-bit D/A converters.

Output Ranges: 4-20mA DC 3.5-24mA under/over-range capability.

Output Accuracy: ±0.05%, typical. ±0.1%, maximum.

Output Compliance
Rload = (Vsupply – 7V) / 0.020A.
Rload = 0 to 850 ohms @ 24V DC.

Output Response Time (for step input change)

Time to reach 98% of output value (typical)
No filtering               31 milliseconds
Low filter                  51 milliseconds
Medium filter        152 milliseconds
High filter            1100 milliseconds

Output Ripple: Less than ±0.1% of output span.

Environmental

Operating Temperature

Operation: -40 to 80°C (-40° to 176°F).

Storage: -40 to 85°C (-40 to 185°F).

Relative humidity: 5 to 95% non-condensing.

Power Requirement: Loop-powered, 7-32V DC SELV, 24mA max.

Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.

Shock and Vibration Immunity
Vibration: 4g, per IEC 60068-2-6.
Shock: 25g, per IEC 60068-2-27.

Approvals
CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX / IECEx Zone 2.

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.

Physical

General: General-purpose enclosure designed for mounting on 35mm “T-type” DIN rail.

Case Material: Self-extinguishing polyamide, UL94 V-0 rated.

I/O Connectors: Removable plug-in terminal blocks rated for 12A/250V; AWG #26-12, stranded or solid copper wire.

Dimensions: 17.5 x 114.5 x 99.0 mm (0.7 x 4.51 x 3.90 inches).

Unit weight: 0.16 kg (0.35 pounds).

Shipping Weight: 0.22 kg (0.5 pounds) packed.

  • Operate as a dual transmitter, a single transmitter, or a signal splitter
  • Easy configuration via USB with Windows software or Agility™ app for Android
  • Independently adjustable and scalable: input and output ranges
  • Selectable current and voltage input ranges: 0/4-20mA, ±1mA, ±20mA, ±0.5V, 0-500mV DC
  • Compatible with Acromag 0-20A AC sensor input
  • 4-20mA current loop outputs support sinking or sourcing circuit configurations
  • User-configurable output range clamp levels support NAMUR-compliant operation
  • Very low 7V two-wire loop burden
  • High accuracy, linearity, stability, and reliability
  • User-selectable filtering (none, low, med, high)
  • Space-saving 17.5mm (0.7 inch) unit with pluggable terminals for convenient wiring
  • 1500V isolation, 4-way (inputs/outputs)
  • Wide ambient operation (-40 to 80°C)
  • Approvals: CE compliant. UL/cUL Class I Div 2, ATEX/IECEx Zone 2

 

Why Do I Need Electrical Isolation? - 8500988 (Log in to view the file)
Why do we need signal isolation? Acromag is in the business of signal conditioning. We manufacture circuits that amplify, isolate, filter, and convert one signal form to another. Most of these circuits also provide electrical isolation. However, added isolation has a cost. Thus, sometimes customers either question their need for isolation or fail to recognize...
Why You Need USB Isolation for Industrial I/O - 8500-901 (Log in to view the file)
USB Isolation and Industrial I/O Isolation is achieved by removing any direct electrical connection between two devices or portions of a circuit, but having them work as if they were electrically connected. Isolation is generally rated by how high a low current AC voltage can be set before there is arcing across the isolation barrier....
How to Wire a 2 or 4-Wire Current Input Module - 8401048
Application Note: Current Input Wiring: 2-Wire & 4-Wire TT236 / SP236 / DT236 2/3-Wire Transmitters & Splitters TT336 / SP336 / DT336 4-Wire Transmitters & Splitters Featured Products: DT236: Current / milliVolt Input Two-Wire Dual Transmitter DT336: Current / Voltage Input Four-Wire Dual Transmitter SP236: Two-Wire Current / milliVolt Input Signal Splitter SP336: Four-Wire Current...

Specs & Catalogs

Manuals

DT236 User Manual (Log in to download the file)

DT230 and DT330 Configuration Software (Log in to download the file)
Agility Config Tool (Tethered) (Log in to download the file)
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    DT230-Config/Cal: Calibration Service

    • Factory custom configuration/calibration service.
    • Specify input type, input/output zero and full-scale values, filtering, and sensor fault settings on order.
    Select options
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    USB Cables

    4001-112: USB cable, 1 meter, with Type A to Type B plugs. 4001-113: USB cable, 1 meter, with Type A to Mini-B plugs. 5028-565: USB-OTG cable, 6 inches
    Select options

Additional information

Weight 16 oz
Dimensions 13 × 12 × 3 in
Part Number

DT236-0600: Isolated 4-20mA Loop-Powered Outputs

Configuration

Agility Mobile App, Windows Software Configuration

Product Series

DT230 Series

  • Description

    DT236: Current / milliVolt Input Two-Wire Dual Transmitter Description

    DT230 series signal conditioners provide two independent I/O channels in a single, space-saving unit. The DT236 model is a dual two-wire transmitter that isolates and converts DC current or low voltage inputs to proportional 4-20mA control signals. Power is received from the output loop current or a DC supply when using a three-wire connection.

    High-voltage isolation separates all input and output circuits from each other. Isolation protects from surges, reduces noise, and helps eliminate ground loop errors.

    Setup and calibration are fast and easy with a convenient USB connection to your PC and Acromag’s Windows configuration software. The Android app enables setup with mobile devices.

    Advanced signal processing capabilities, variable range input/output, and convenient USB programming make this instrument very versatile. 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 ground loop error between a grounded PC and a grounded input signal, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a DT230 Series transmitter.

    USB Interface

    USB Connection
    Type: USB Mini-B type socket, 5-pin
    Data Rate: 12Mbps. USB v1.1 and 2.0 compatible
    Maximum cable length: 5.0 meters
    Transient voltage suppression on power and data lines.

    Input (two channels)

    Default Configuration/Calibration
    Input: 4 to 20mA, medium filter
    Output: 4 to 20mA

    A/D Converters (ADC)
    Two 24-bit Sigma Delta ADCs (only 16-bits used)

    Input Ranges:
    Path A: ±1mA, ±20mA, 0 to 11.17mA, 0-20mA, 4-20mA DC.
    Path B: ±0.5V, 0-500mV DC.

    Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C).

    Scaling Adjust: Full range.

    Input Impedance
    Current input: 24.9 ohms.
    Voltage input: 15M ohms.

    Input Over-Voltage Protection: Bipolar Transient Voltage Suppression (TVS) and diode clamping.

    Input Filter: RC filter plus variable digital filter (none, low, medium, high).

    Input Bandwidth: -3dB @ 16Hz (no filtering).

    Noise Rejection (@ 60Hz, no filter)
    Common Mode: 93dB no filter (139dB high filter).
    Normal Mode: 6dB no filter (>80dB high filter).

    Output (two channels)

    D/A Converters (DAC): Two 16-bit D/A converters.

    Output Ranges: 4-20mA DC 3.5-24mA under/over-range capability.

    Output Accuracy: ±0.05%, typical. ±0.1%, maximum.

    Output Compliance
    Rload = (Vsupply – 7V) / 0.020A.
    Rload = 0 to 850 ohms @ 24V DC.

    Output Response Time (for step input change)

    Time to reach 98% of output value (typical)
    No filtering               31 milliseconds
    Low filter                  51 milliseconds
    Medium filter        152 milliseconds
    High filter            1100 milliseconds

    Output Ripple: Less than ±0.1% of output span.

    Environmental

    Operating Temperature

    Operation: -40 to 80°C (-40° to 176°F).

    Storage: -40 to 85°C (-40 to 185°F).

    Relative humidity: 5 to 95% non-condensing.

    Power Requirement: Loop-powered, 7-32V DC SELV, 24mA max.

    Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.

    Shock and Vibration Immunity
    Vibration: 4g, per IEC 60068-2-6.
    Shock: 25g, per IEC 60068-2-27.

    Approvals
    CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX / IECEx Zone 2.

    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.

    Physical

    General: General-purpose enclosure designed for mounting on 35mm “T-type” DIN rail.

    Case Material: Self-extinguishing polyamide, UL94 V-0 rated.

    I/O Connectors: Removable plug-in terminal blocks rated for 12A/250V; AWG #26-12, stranded or solid copper wire.

    Dimensions: 17.5 x 114.5 x 99.0 mm (0.7 x 4.51 x 3.90 inches).

    Unit weight: 0.16 kg (0.35 pounds).

    Shipping Weight: 0.22 kg (0.5 pounds) packed.

  • Features & Benefits

    • Operate as a dual transmitter, a single transmitter, or a signal splitter
    • Easy configuration via USB with Windows software or Agility™ app for Android
    • Independently adjustable and scalable: input and output ranges
    • Selectable current and voltage input ranges: 0/4-20mA, ±1mA, ±20mA, ±0.5V, 0-500mV DC
    • Compatible with Acromag 0-20A AC sensor input
    • 4-20mA current loop outputs support sinking or sourcing circuit configurations
    • User-configurable output range clamp levels support NAMUR-compliant operation
    • Very low 7V two-wire loop burden
    • High accuracy, linearity, stability, and reliability
    • User-selectable filtering (none, low, med, high)
    • Space-saving 17.5mm (0.7 inch) unit with pluggable terminals for convenient wiring
    • 1500V isolation, 4-way (inputs/outputs)
    • Wide ambient operation (-40 to 80°C)
    • Approvals: CE compliant. UL/cUL Class I Div 2, ATEX/IECEx Zone 2

     

  • Tech Papers

    Why Do I Need Electrical Isolation? - 8500988 (Log in to view the file)
    Why do we need signal isolation? Acromag is in the business of signal conditioning. We manufacture circuits that amplify, isolate, filter, and convert one signal form to another. Most of these circuits also provide electrical isolation. However, added isolation has a cost. Thus, sometimes customers either question their need for isolation or fail to recognize...
    Why You Need USB Isolation for Industrial I/O - 8500-901 (Log in to view the file)
    USB Isolation and Industrial I/O Isolation is achieved by removing any direct electrical connection between two devices or portions of a circuit, but having them work as if they were electrically connected. Isolation is generally rated by how high a low current AC voltage can be set before there is arcing across the isolation barrier....
    How to Wire a 2 or 4-Wire Current Input Module - 8401048
    Application Note: Current Input Wiring: 2-Wire & 4-Wire TT236 / SP236 / DT236 2/3-Wire Transmitters & Splitters TT336 / SP336 / DT336 4-Wire Transmitters & Splitters Featured Products: DT236: Current / milliVolt Input Two-Wire Dual Transmitter DT336: Current / Voltage Input Four-Wire Dual Transmitter SP236: Two-Wire Current / milliVolt Input Signal Splitter SP336: Four-Wire Current...
  • Specs & Data Sheets

    Specs & Catalogs

    Manuals

    DT236 User Manual (Log in to download the file)

  • Software

    DT230 and DT330 Configuration Software (Log in to download the file)
    Agility Config Tool (Tethered) (Log in to download the file)
  • Accessories

    • Compare

      4001-252: DIN Rail End Stops

      • DIN rail end stop for hazloc approvals
      Select options
    • Compare

      5020-350: Toroidal AC Current Sensor

      • AC Current Sensor to precondition an AC current input signal
      • Highly accurate toroidal instrument transformer that converts an AC current signal to a safe, low level, DC milliampere signal (0 to 11.17mA).
      Select options
    • Compare

      DT230-Config/Cal: Calibration Service

      • Factory custom configuration/calibration service.
      • Specify input type, input/output zero and full-scale values, filtering, and sensor fault settings on order.
      Select options
    • Compare

      USB Cables

      4001-112: USB cable, 1 meter, with Type A to Type B plugs. 4001-113: USB cable, 1 meter, with Type A to Mini-B plugs. 5028-565: USB-OTG cable, 6 inches
      Select options
  • Additional information

    Additional information

    Weight 16 oz
    Dimensions 13 × 12 × 3 in
    Part Number

    DT236-0600: Isolated 4-20mA Loop-Powered Outputs

    Configuration

    Agility Mobile App, Windows Software Configuration

    Product Series

    DT230 Series