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Product short description:
  • 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.

 

DT233: Thermocouple / mV Input Two-Wire Dual Transmitter Description

DT230 series signal conditioners provide two independent I/O channels in a single, space-saving unit.

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. 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.

Learn more about the DT Series and view all models >

DT233: Thermocouple / mV Input Two-Wire Dual Transmitter 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.

USB Driver:
Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system.

Input (two channels)

Default Configuration/Calibration
Input: TC J, -210 to 760°C, medium filter.
Output: 4 to 20mA, upscale break detect.

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

Input Ranges
Input                         Range                                     Accuracy
TC J         -210 to 760°C (-346 to 1400°F)             ±0.5°C
TC K        -200 to 1372°C (-328 to 2502°F)           ±0.5°C
TC T        -260 to 400°C (-436 to 752°F)                ±0.5°C
TC R          -50 to 1768°C (-58 to 3214°F)              ±1.0°C
TC S           -50 to 1768°C (-58 to 3214°F)             ±1.0°C
TC E        -200 to 1000°C (-328 to 1832°F)           ±0.5°C
TC B          260 to 1820°C (500 to 3308°F)            ±1.0°C
TC N        -230 to -170°C (-382 to -274°F)             ±1.0°C
TC N        -230 to -1300°C (-274 to 2372°F           ±0.5°C
mV            -100 to 100mV                                            ±0.05%

Thermocouple Reference (Cold Junction Compensation): ±0.2°C typical, ±0.5°C maximum at 25°C.

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

Scaling Adjust: 0 to 110% of nominal range.

Lead Break (Sensor Burnout) Detection: Upscale/downscale.

Input Impedance: 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).

Noise Rejection (@ 60Hz)
Common Mode: 100dB no filter (135dB high filter).
Normal Mode: 0.5dB 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               14 milliseconds
Low filter                  47 milliseconds
Medium filter        156 milliseconds
High filter             1154 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.

Learn more about the DT Series and view all models >

  • 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 thermocouple/millivolt input types: (TC Type J, K, T, R, S, E, B, N, ±100mV, ±1V)
  • 4-20mA current loop outputs support sinking or sourcing circuit configurations
  • Supports reverse-acting (inverse) output
  • User-configurable output range clamp levels support NAMUR-compliant operation
  • Selectable up/downscale sensor break detection
  • 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

 

 

 

How to Minimize Thermocouple to Transmitter Measurement Errors - 8500926 (Log in to view the file)
Preventing Temperature Measurement Error in Thermocouple to Transmitter Connections The nature of thermocouple (TC) circuits is that they’re prone to produce error when mating them to a measurement device; unless you have some insight into how these TCs and their components work. This paper reviews thermocouple behavior and outlines common problems encountered when connecting them...
How to use Thermocouples for Temperature Measurement - 8500911 (Log in to view the file)
Criteria for Temperature Selection of T/C and RTD Sensor Types This is part two of a comprehensive three-part series that provides information for choosing an industrial temperature sensor from Thermocouple (T/C) and Resistance Temperature Detector (RTD) sensor types.   The Basics of Temperature Measurement Using Thermocouples You are probably somewhat familiar with the thermocouple, or...
How to use Thermocouple Transmitters to Monitor Temperatures in Paint Systems - 8400818
This document illustrates using Acromag’s TT330 Series to monitor high temperatures in an automotive paint curing oven and transmit to the existing PLC 4-20mA input card/software setup. Defining the Problem The area around an auto manufacturer’s paint curing ovens is at elevated temperatures affecting the performance of locally installed instrumentation. Placing signal conditioners rated for...

Specifications

Manuals

DT233 User Manual (Log in to download the file)

TTC-SIP: Software Interface Package Information Page (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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    4001-252: DIN Rail End Stops

    • DIN rail end stop for hazloc approvals
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  • 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

Weight 8 oz
Dimensions 5 × 5 × 5 in
Part Number

DT233-0600: Dual Transmitter 2-wire TC/mV input

Configuration

Agility Mobile App, Windows Software Configuration

Product Series

DT230 Series

  • Description

    DT233: Thermocouple / mV Input Two-Wire Dual Transmitter Description

    DT230 series signal conditioners provide two independent I/O channels in a single, space-saving unit.

    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. 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.

    Learn more about the DT Series and view all models >

    DT233: Thermocouple / mV Input Two-Wire Dual Transmitter 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.

    USB Driver:
    Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system.

    Input (two channels)

    Default Configuration/Calibration
    Input: TC J, -210 to 760°C, medium filter.
    Output: 4 to 20mA, upscale break detect.

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

    Input Ranges
    Input                         Range                                     Accuracy
    TC J         -210 to 760°C (-346 to 1400°F)             ±0.5°C
    TC K        -200 to 1372°C (-328 to 2502°F)           ±0.5°C
    TC T        -260 to 400°C (-436 to 752°F)                ±0.5°C
    TC R          -50 to 1768°C (-58 to 3214°F)              ±1.0°C
    TC S           -50 to 1768°C (-58 to 3214°F)             ±1.0°C
    TC E        -200 to 1000°C (-328 to 1832°F)           ±0.5°C
    TC B          260 to 1820°C (500 to 3308°F)            ±1.0°C
    TC N        -230 to -170°C (-382 to -274°F)             ±1.0°C
    TC N        -230 to -1300°C (-274 to 2372°F           ±0.5°C
    mV            -100 to 100mV                                            ±0.05%

    Thermocouple Reference (Cold Junction Compensation): ±0.2°C typical, ±0.5°C maximum at 25°C.

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

    Scaling Adjust: 0 to 110% of nominal range.

    Lead Break (Sensor Burnout) Detection: Upscale/downscale.

    Input Impedance: 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).

    Noise Rejection (@ 60Hz)
    Common Mode: 100dB no filter (135dB high filter).
    Normal Mode: 0.5dB 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               14 milliseconds
    Low filter                  47 milliseconds
    Medium filter        156 milliseconds
    High filter             1154 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.

    Learn more about the DT Series and view all models >

  • 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 thermocouple/millivolt input types: (TC Type J, K, T, R, S, E, B, N, ±100mV, ±1V)
    • 4-20mA current loop outputs support sinking or sourcing circuit configurations
    • Supports reverse-acting (inverse) output
    • User-configurable output range clamp levels support NAMUR-compliant operation
    • Selectable up/downscale sensor break detection
    • 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

    How to Minimize Thermocouple to Transmitter Measurement Errors - 8500926 (Log in to view the file)
    Preventing Temperature Measurement Error in Thermocouple to Transmitter Connections The nature of thermocouple (TC) circuits is that they’re prone to produce error when mating them to a measurement device; unless you have some insight into how these TCs and their components work. This paper reviews thermocouple behavior and outlines common problems encountered when connecting them...
    How to use Thermocouples for Temperature Measurement - 8500911 (Log in to view the file)
    Criteria for Temperature Selection of T/C and RTD Sensor Types This is part two of a comprehensive three-part series that provides information for choosing an industrial temperature sensor from Thermocouple (T/C) and Resistance Temperature Detector (RTD) sensor types.   The Basics of Temperature Measurement Using Thermocouples You are probably somewhat familiar with the thermocouple, or...
    How to use Thermocouple Transmitters to Monitor Temperatures in Paint Systems - 8400818
    This document illustrates using Acromag’s TT330 Series to monitor high temperatures in an automotive paint curing oven and transmit to the existing PLC 4-20mA input card/software setup. Defining the Problem The area around an auto manufacturer’s paint curing ovens is at elevated temperatures affecting the performance of locally installed instrumentation. Placing signal conditioners rated for...
  • Specs & Data Sheets

    Specifications

    Manuals

    DT233 User Manual (Log in to download the file)

  • Software

    TTC-SIP: Software Interface Package Information Page (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)
  • Accessories

    • Compare

      4001-252: DIN Rail End Stops

      • DIN rail end stop for hazloc approvals
      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 8 oz
    Dimensions 5 × 5 × 5 in
    Part Number

    DT233-0600: Dual Transmitter 2-wire TC/mV input

    Configuration

    Agility Mobile App, Windows Software Configuration

    Product Series

    DT230 Series