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Product short description:
  • Multi-range ±15V, ±75V or ±150V input
  • Universal current/voltage output
  • 12-32V DC power
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The TT338 model is a space-saving four-wire transmitter that isolates and converts a high level DC voltage input to a proportional control signal. DC current and voltage output are both supported on a single model. An optional DIN rail bus can deliver primary or redundant power to multiple units without wiring.

High-voltage isolation separates the input from the output circuit. 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 or the Agility™ Config Tool is a mobile application that allows easy setup and configuration of Acromag TT Series transmitters via a tethered mobile device.

Advanced signal processing capabilities, variable range input, and convenient USB programming make this instrument a very versatile temperature measurement device. 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 the use of their USB-ISOLATOR when configuring a TT330 Series transmitter.

USB Interface

USB Connector: USB Mini-B type socket, 5-pin
USB Data Rate: 12Mbps. USB v1.1 and 2.0 compatible
USB Transient Protection: Transient voltage suppression on power and data lines
USB Cable Length: 5.0 meters maximum
Driver: Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system

Input

Default Configuration/Calibration:
Input: ±150V, medium filter
Output: 4 to 20mA

Input Ranges and Accuracy:
Range                   Accuracy
±15V DC            ±0.05% of span
±75V DC            ±0.05% of span
±150V DC         ±0.05% of span
Error includes the effects of repeatability, terminal point conformity, and linearization.

Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C)
Zero Scaling Adjust: 0 to 95% of range, typical
Full Scale Adjust: 5 to 100% of full scale range, typical
Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 220V working typical
Input Resolution:
Bipolar input: 1 part in 50000 (±25000)
Unipolar input: 1 part in 25000
Input Impedance: Greater than 1M ohms
Input Filter: Selectable digital filtering settings (none, low, medium, high)
Noise Rejection:
Normal mode @ 60Hz: >15dB (no filter), >80dB (high filter)
Common mode @ 60Hz: >70B (no filter), >120dB (high filter)

Output

Output Range:
Range                    Over-Range                 Resolution
±10V                            ±10.5V                       1 part in 62415
±5V                               ±5.V                            1 part in 31208
0 to 10V              –0.5527 to +10.5V        1 part in 59293
0 to 5V              –0.27634 to +5.25V        1 part in 59293
±20mA                        ±21mA                      1 part in 62415
0 to 20mA          –1.1054 to 21mA          1 part in 59293
4 to 20mA          –1.1054 to 21mA          1 part in 47434

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

Output Response Time (for step input change)

Time to reach 98% of output value (typical)
                                         TB1 (±15V)           TB2 (±75V,±150V)
No filter                    49 milliseconds           49 milliseconds
Low filter                 69 milliseconds           68 milliseconds
Medium filter      175 milliseconds         152 milliseconds
High filter           1164 milliseconds        944 milliseconds

Output Ripple: Less than ±0.1% of output span
Output Ambient Temperature Drift: Better than ±80ppm/°C (±0.0080%/°C)

Environmental

Operating temperature: -40 to 80°C (-40° to 176°F)
Storage temperature: -40 to 85°C (-40 to 185°F)
Relative humidity: 5 to 95% non-condensing
Power requirement: 12-32V DC SELV (Safety Extra Low Voltage), 1.3W maximum
Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input, output, and power (3-way)
Shock and Vibration Immunity:
Vibration: 5g, per IEC 60068-2-64
Shock: 50g, per IEC 60068-2-27
Approvals: CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD. ATEX / IECEx certified 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, color light gray. General-purpose NEMA Type 1 enclosure
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)
Shipping Weight: 0.22 kg (0.5 pounds) packed

 

  • Easy setup and digital calibration via USB with Windows configuration software
  • Single unit supports ±15V, ±75V, and ±150V DC input ranges
  • Universal output connections support ranges up to ±21mA or ±10.5V DC without rewiring
  • Space-saving 17.5mm (0.7 inch) unit with pluggable terminals for convenient wiring
  • High accuracy, linearity, stability, and reliability
  • User-selectable filtering (none, low, medium, high)
  • Adjustable response time (50ms to 1200ms)
  • Supports reverse-acting (inverse) output
  • Bus power, local power, or both
  • Redundant ready power
  • 1500V input isolation
  • Shock (50g) and vibration (5g) resistant
  • Mounts on Type T DIN-rail
  • Wide ambient operation (-40 to 80°C)
  • CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals

Specifications

Manuals

TT338 User Manual (Log in to download the file)

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    USB Isolator

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

    • Easy setup and digital calibration via USB with Windows configuration software
    • Single unit supports ±15V, ±75V, and ±150V DC input ranges
    • Universal output connections support ranges up to ±21mA or ±10.5V DC without rewiring
    • Space-saving 17.5mm (0.7 inch) unit with pluggable terminals for convenient wiring
    • High accuracy, linearity, stability, and reliability
    • User-selectable filtering (none, low, medium, high)
    • Adjustable response time (50ms to 1200ms)
    • Supports reverse-acting (inverse) output
    • Bus power, local power, or both
    • Redundant ready power
    • 1500V input isolation
    • Shock (50g) and vibration (5g) resistant
    • Mounts on Type T DIN-rail
    • Wide ambient operation (-40 to 80°C)
    • CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals
  • Specs & Data Sheets

    Specifications

    Manuals

    TT338 User Manual (Log in to download the file)

  • Accessories

    • Compare

      Agility Config Tool

      • Agility Config Tool mobile application.
      • Download available on Google Play and iTunes for free.
      • Download Windows configuration software from the software tab below.
      Read more
    • Compare

      PS5R: Slim Line Power Supplies

      • 10W, 15W, 30W, 60W, 90W, 120W, and 240W models
      • Universal Input (85-264V AC / 100-370V DC)
      • Lightweight and compact size
      $109.25$281.75
      Select options
    • Compare

      TT Bus-Kit: DIN Rail Bus Power Connector

      • One kit supports multiple SP Series Splitters or DT and TT Series transmitters.
      $28.75
      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 (5040-944), 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
      $46$184
      Select options
    • Compare

      USB Isolator

      • USB-powered, USB 2.0 and 1.1 compatible
      • 1500V AC / 2100V DC isolation
      • No drivers required
      $113.85
      Select options
  • Additional information

    Additional information

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

    USB-Isolator: includes USB cable