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Product short description:
  • Dual channels
  • ±1V, ±10V inputs
  • 0-20mA, ±10V outputs
  • 6-32V DC local/bus power
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DT330 series signal conditioners provide two independent I/O channels in a single, space-saving unit. 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. 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/Calibration
Input: ±10V, medium filter
Output: 4 to 20mA
A/D Converters (ADC): Two 24-bit Sigma Delta ADCs (only 16-bits used)
Input Ranges:
Path A: ±1V, 0-1V
Path B: ±5V, ±10V, 0-5V, 0-10V DC
Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C)
Scaling Adjust: Full range
Input Impedance:
Path A: 15MΩ
Path B: 1MΩ
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 @ 34Hz (no filtering)
Noise Rejection:
Common Mode: 100dB, no filter (120dB high filter)
Normal Mode: Path A 7dB, Path B 29dB, 60Hz, no filter. (>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                   41 milliseconds
Medium filter        140 milliseconds
High filter             1140 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 (pending)
CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX / IECEx Zone 2. II 3 G Ex nA IIC T4 Gc -40°C < Ta < +80°C

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 medium voltage input ranges: ±1V, ±5V, ±10V, 0-1V, 0-5V, 0-10V DC
  • Selectable current and voltage output ranges: 0-20mA, 4-20mA, ±5V, ±10V, 0-5V, 0-10V DC
  • Supports reverse-acting (inverse) output
  • High accuracy, linearity, stability, and reliability
  • User-selectable filtering (none, low, med., high)
  • 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)
  • Pending approvals: CE compliant. UL/cUL Class I Div 2, ATEX/IECEx Zone 2

Specs & Catalogs

Manuals

DT337 User Manual (Log in to download the file)

DT230 and DT330 Configuration Software (Log in to download the file)
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    TTC-SIP: Software

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    • Includes configuration sofware CD-ROM (5040-944), 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 below
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    USB Cables

    Various USB cables
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    USB Isolator

    • USB-powered, USB 2.0 and 1.1 compatible
    • 1500V AC / 2100V DC isolation
    • No drivers required
    $99
    Select options

Additional information

Weight 8 oz
Dimensions 2.4 × 1.85 × 0.925 in
Part Number

USB-Isolator: includes USB cable

  • Description

    This compact, industrial-grade isolator provides a high-voltage isolation barrier between a computer and a connected USB device.

    The isolation protects equipment from electrical surges and transient voltage spikes. It also eliminates ground loop currents flowing between the PC and peripherals which can cause damage and inaccurate measurements. Additionally, isolation minimizes conducted noise from static discharge, magnetic fields, and radio frequency interference.

    Acromag’s USB isolator is very easy to use. The isolator inserts in-line with the USB connection and operates transparently. No special software drivers are required. The unit receives power from the PC’s USB port and isolates that power to the connected device. High noise immunity and low radiated emissions ensure reliable data transfer in sensitive applications.

  • 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 medium voltage input ranges: ±1V, ±5V, ±10V, 0-1V, 0-5V, 0-10V DC
    • Selectable current and voltage output ranges: 0-20mA, 4-20mA, ±5V, ±10V, 0-5V, 0-10V DC
    • Supports reverse-acting (inverse) output
    • High accuracy, linearity, stability, and reliability
    • User-selectable filtering (none, low, med., high)
    • 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)
    • Pending approvals: CE compliant. UL/cUL Class I Div 2, ATEX/IECEx Zone 2
  • Specs & Data Sheets

    Specs & Catalogs

    Manuals

    DT337 User Manual (Log in to download the file)

  • Software

    DT230 and DT330 Configuration Software (Log in to download the file)
  • Accessories

    • Compare

      4001-252: DIN Rail End Stops

      • DIN rail end stop for hazloc approvals
      $10
      Read more
    • 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 (5040-944), 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 below
      $40$160
      Select options
    • Compare

      USB Cables

      Various USB cables
      $10$15
      Select options
    • Compare

      USB Isolator

      • USB-powered, USB 2.0 and 1.1 compatible
      • 1500V AC / 2100V DC isolation
      • No drivers required
      $99
      Select options
  • Additional information

    Additional information

    Weight 8 oz
    Dimensions 2.4 × 1.85 × 0.925 in
    Part Number

    USB-Isolator: includes USB cable