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Product short description:
  • Dual channels
  • RTD (Pt, Ni, Cu) or 0-4500 ohm input
  • 0-20mA, ±10V outputs
  • 6-32V DC local/bus power

The DT335 model is a four-wire dual transmitter that isolates and converts RTD or linear resistance sensor inputs to proportional control signals.

Click here to watch a short video highlighting the features of the DT335.

DT335: RTD/Resistance Input Four-wire Dual Transmitter Description

DT330 series signal conditioners provide two independent I/O channels in a single, space-saving unit. The DT335 model is a four-wire dual transmitter that isolates and converts RTD or linear resistance sensor inputs to proportional control signals. Each channel supports DC current or voltage output. An optional DIN rail bus can deliver primary or redundant power to multiple units.

High-voltage isolation separates inputs, outputs, and power from each other. Isolation protects from surges, reduces noise, and eliminates 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 damage or errors from grounded PCs and surges, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a DT330 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
Input: 100Ω Pt RTD, 3-wire, =0.00385, -200 to 850°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 Type                                   Range                    Accuracy
RTD, Pt 100Ω                          -200 to 850°C               ±0.25°C
RTD, Pt 200Ω                          -200 to 850°C               ±0.30°C
RTD, Pt 500Ω                         -200 to 850°C                ±0.50°C
RTD, Pt 1000Ω                       -200 to 850°C                ±1.00°C
Ni 120Ω (Minco 7-120)          -80 to 320°C                ±0.08°C
Cu 10Ω (Minco 16-9)           -200 to 270°C                 ±1.00°C
Linear Resistance                       0 to 25Ω                    ±0.05Ω
Linear Resistance                       0 to 450Ω                  ±0.10Ω
Linear Resistance                       0 to 9000Ω                ±0.90Ω
Linear Resistance                       0 to 2250Ω                ±2.25Ω
Linear Resistance                       0 to 4500Ω                ±4.50Ω

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

Scaling Adjust: Full range.

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

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:
Common Mode: 106dB no filter.
Normal Mode: 1dB no filter, 60Hz (>80dB med./high filter).

Output (two channels)

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

Output Ranges:
±10V (±11V maximum)
±5V (±5.5V maximum)
0 to 10V (11V maximum)
0 to 5V (5.5V maximum)
0 to 20mA (24mA maximum)
4 to 20mA (24mA maximum)

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

Output Load:
Voltage output: 1K ohms minimum.
Current output: 0-550 ohms.

Output Compliance: 11V, typical.

Output Response Time (for step input change)

Time to reach 98% of output value (typical)
No filtering               25 milliseconds
Low filter                  44 milliseconds
Medium filter        146 milliseconds
High filter             1068 milliseconds

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

Environmental

Operating Temperature

Operation: -40 to 70°C (-40° to 158°F).

Storage: -40 to 85°C (-40 to 185°F).

Relative humidity: 5 to 95% non-condensing.

Power Requirement: 6-32V DC SELV, 1.6W max.

Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between inputs, outputs, and power (5-way).

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 RTD and linear resistance input types: Pt 100/200/500Ω, Ni 120Ω, Cu 10Ω, 0-4500Ω
  • Supports 2, 3, and 4-wire sensor connections
  • Selectable current and voltage output ranges: 0-20mA, 4-20mA, ±5V, ±10V, 0-5V, 0-10V DC
  • High accuracy, linearity, stability, and reliability
  • User-selectable filtering (none, low, med., high)
  • Selectable up/downscale break detection
  • Bus power, local power, or both (redundancy)
  • Space-saving 17.5mm (0.7 inch) unit with pluggable terminals for convenient wiring
  • 1500V input isolation, 5-way, (power/input/output)
  • Wide ambient operation (-40 to 70°C)
  • CE compliant. UL/cUL Class I Div 2, ATEX/IECEx Zone 2

 

The Best Temperature Sensor for Process Control: Thermocouple vs RTD - 8500918 (Log in to view the file)
Criteria for Temperature Selection of T/C and RTD Sensor Types This is part three 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. Thermocouple vs RTD Many users simply look to fill the basic needs of their application and do...
How to use RTDs for Temperature Measurement - 8500917 (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 RTDs A Resistance Temperature Detector (RTD) is a passive circuit element...

Specifications

Manuals

DT335 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)
  • Compare

    DT330-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

    TTBus-Kit: DIN Rail Bus Power Connector

    • One kit supports multiple TT330 series transmitters.
    • For multiple DT330/351 or SP330 transmitters, one TTBUS-KIT is required for each transmitter to be DC Power wired via the bus rail power connections.
       
    Select options
  • Compare

    TTC-SIP: Software

    • Software Interface Package for Acromag DT, ST, TT Series Transmitters and SP, uBSP Series Signal Splitters.
    • Includes configuration sofware CD-ROM (5040-xxx), isolator (USB-ISOLATOR) and two USB cable (4001-112, 4001-113) (Recommend one kit per customer.)
    • Easy setup and digital calibration via USB with Windows configuration software.
    • Download the configuration software only - from the Software Tab
    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 1 × 5 × 4 in
Part Number

DT335-0700: Isolated current or voltage outputs

Configuration

Agility Mobile App, Factory Calibration, Windows Software Configuration

Product Series

DT330 Series

  • Description

    DT335: RTD/Resistance Input Four-wire Dual Transmitter Description

    DT330 series signal conditioners provide two independent I/O channels in a single, space-saving unit. The DT335 model is a four-wire dual transmitter that isolates and converts RTD or linear resistance sensor inputs to proportional control signals. Each channel supports DC current or voltage output. An optional DIN rail bus can deliver primary or redundant power to multiple units.

    High-voltage isolation separates inputs, outputs, and power from each other. Isolation protects from surges, reduces noise, and eliminates 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 damage or errors from grounded PCs and surges, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a DT330 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
    Input: 100Ω Pt RTD, 3-wire, =0.00385, -200 to 850°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 Type                                   Range                    Accuracy
    RTD, Pt 100Ω                          -200 to 850°C               ±0.25°C
    RTD, Pt 200Ω                          -200 to 850°C               ±0.30°C
    RTD, Pt 500Ω                         -200 to 850°C                ±0.50°C
    RTD, Pt 1000Ω                       -200 to 850°C                ±1.00°C
    Ni 120Ω (Minco 7-120)          -80 to 320°C                ±0.08°C
    Cu 10Ω (Minco 16-9)           -200 to 270°C                 ±1.00°C
    Linear Resistance                       0 to 25Ω                    ±0.05Ω
    Linear Resistance                       0 to 450Ω                  ±0.10Ω
    Linear Resistance                       0 to 9000Ω                ±0.90Ω
    Linear Resistance                       0 to 2250Ω                ±2.25Ω
    Linear Resistance                       0 to 4500Ω                ±4.50Ω

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

    Scaling Adjust: Full range.

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

    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:
    Common Mode: 106dB no filter.
    Normal Mode: 1dB no filter, 60Hz (>80dB med./high filter).

    Output (two channels)

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

    Output Ranges:
    ±10V (±11V maximum)
    ±5V (±5.5V maximum)
    0 to 10V (11V maximum)
    0 to 5V (5.5V maximum)
    0 to 20mA (24mA maximum)
    4 to 20mA (24mA maximum)

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

    Output Load:
    Voltage output: 1K ohms minimum.
    Current output: 0-550 ohms.

    Output Compliance: 11V, typical.

    Output Response Time (for step input change)

    Time to reach 98% of output value (typical)
    No filtering               25 milliseconds
    Low filter                  44 milliseconds
    Medium filter        146 milliseconds
    High filter             1068 milliseconds

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

    Environmental

    Operating Temperature

    Operation: -40 to 70°C (-40° to 158°F).

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

    Relative humidity: 5 to 95% non-condensing.

    Power Requirement: 6-32V DC SELV, 1.6W max.

    Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between inputs, outputs, and power (5-way).

    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 RTD and linear resistance input types: Pt 100/200/500Ω, Ni 120Ω, Cu 10Ω, 0-4500Ω
    • Supports 2, 3, and 4-wire sensor connections
    • Selectable current and voltage output ranges: 0-20mA, 4-20mA, ±5V, ±10V, 0-5V, 0-10V DC
    • High accuracy, linearity, stability, and reliability
    • User-selectable filtering (none, low, med., high)
    • Selectable up/downscale break detection
    • Bus power, local power, or both (redundancy)
    • Space-saving 17.5mm (0.7 inch) unit with pluggable terminals for convenient wiring
    • 1500V input isolation, 5-way, (power/input/output)
    • Wide ambient operation (-40 to 70°C)
    • CE compliant. UL/cUL Class I Div 2, ATEX/IECEx Zone 2

     

  • Tech Papers

    The Best Temperature Sensor for Process Control: Thermocouple vs RTD - 8500918 (Log in to view the file)
    Criteria for Temperature Selection of T/C and RTD Sensor Types This is part three 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. Thermocouple vs RTD Many users simply look to fill the basic needs of their application and do...
    How to use RTDs for Temperature Measurement - 8500917 (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 RTDs A Resistance Temperature Detector (RTD) is a passive circuit element...
  • Specs & Data Sheets

    Specifications

    Manuals

    DT335 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

      DT330-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

      TTBus-Kit: DIN Rail Bus Power Connector

      • One kit supports multiple TT330 series transmitters.
      • For multiple DT330/351 or SP330 transmitters, one TTBUS-KIT is required for each transmitter to be DC Power wired via the bus rail power connections.
         
      Select options
    • Compare

      TTC-SIP: Software

      • Software Interface Package for Acromag DT, ST, TT Series Transmitters and SP, uBSP Series Signal Splitters.
      • Includes configuration sofware CD-ROM (5040-xxx), isolator (USB-ISOLATOR) and two USB cable (4001-112, 4001-113) (Recommend one kit per customer.)
      • Easy setup and digital calibration via USB with Windows configuration software.
      • Download the configuration software only - from the Software Tab
      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 1 × 5 × 4 in
    Part Number

    DT335-0700: Isolated current or voltage outputs

    Configuration

    Agility Mobile App, Factory Calibration, Windows Software Configuration

    Product Series

    DT330 Series