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Product short description:
  • Selectable RTD or linear resistance input type or 0-500 ohm input
  • 4-20mA output (sink/source)
  • 12-32V DC loop/local power
  • USB configuration
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The TT235 model is a space-saving two-wire transmitter that isolates and converts an RTD sensor input to a proportional 4-20mA signal. Power is received from the output loop current or a DC supply when using a three-wire connection. The transmitter provides sensor excitation plus performs linearization, lead-wire compensation, and lead-break detection.

Setup and calibration are fast and easy with a convenient USB connection to your PC and Acromag’s Windows configuration software.

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 TT230 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
100Ω Pt RTD, α=0.00385, -200 to 850°C input,
4-20mA output, upscale break detect, medium filter.

Input Configuration:
Two- three- or four-wire sensor input connections.
Programs in °C, °F, °K, or ohmic integer values only

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
Resistance (linear)                     0 to 25Ω                    ±0.05Ω
Resistance (linear)                     0 to 450Ω                  ±0.10Ω
Resistance (linear)                     0 to 9000Ω               ±0.90Ω
Resistance (linear)                     0 to 2250Ω               ±2.25Ω
Resistance (linear) *                   0 to 4500Ω              ±4.50Ω

*Note 1: Linear resistance input range approaches but does not include 0Ω and 500Ω. If exactly 0Ω or 500Ω is measured, break detection is triggered.
**Note 2: Rated accuracy (in °C and % of span) applies for input spans greater than 5% of input full-scale.

Input Scaling Adjust:
Zero: 0 to 95% of range, typical
Full scale: 5 to 100% of full scale range, typical
Lead Break (Sensor Burnout) Detection: Configurable for either upscale or downscale

Output

Output Range: 4 to 20mA DC
Under-range capability 3.5mA
Over-range capability 24mA
Output Compliance:
Rload = (Vsupply – 11V) / 0.020A
Rload = 0 to 650 ohms @ 24V DC
Output DAC Resolution: 16-bit D/A converter
Output Accuracy: Better than ±0.05% of span, typical (±0.1% max) for nominal input spans. Includes the effects of repeatability, terminal point conformity, and
linearization, but does not include sensor error.
Ambient Temperature Effect: Better than ±0.008% per °C of input span or ±80ppm/°C, typical. Includes the combined effects of zero and span drift over temperature.

Output Response Time (for step input change)
No filter                 22ms
Low filter              50ms
Medium filter    160ms
High filter         1210ms

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), 24mA maximum
Shock and Vibration Immunity:
Vibration: 4g, per IEC 60068-2-6
Shock: 25g, per IEC 60068-2-27
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
Approvals:
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

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: 12.5 x 114.5 x 99.0 mm (0.5 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
  • Selectable RTD or linear resistance input type: Pt RTD (100Ω, 200Ω, 500Ω, or 1000Ω), Ni RTD (120Ω), Cu RTD (10Ω), or Resistance (0-450Ω)
  • 1500V isolation between input/output circuits
  • Space-saving 12.5mm (0.5 inch) unit with pluggable terminals for convenient wiring
  • High accuracy, linearity, stability, and reliability
  • Supports normal or reverse-acting output
  • Supports sink or source output wiring
  • User-selectable filtering (none, low, med., high)
  • Fast response (as low as 22ms)
  • Selectable upscale or downscale operation for sensor errors and lead-break detection
  • NAMUR-compliant output loop current
  • Shock (25g) and vibration (4g) resistant
  • Wide ambient operation (-40 to 80°C)
  • CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals

Specifications

Manuals

TT235 User Manual (Log in to download the file)

TT230 Series Windows Configuration Software (Log in to download the file)
Agility Config Tool (Log in to download the file)
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    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.)
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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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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
    • Selectable RTD or linear resistance input type: Pt RTD (100Ω, 200Ω, 500Ω, or 1000Ω), Ni RTD (120Ω), Cu RTD (10Ω), or Resistance (0-450Ω)
    • 1500V isolation between input/output circuits
    • Space-saving 12.5mm (0.5 inch) unit with pluggable terminals for convenient wiring
    • High accuracy, linearity, stability, and reliability
    • Supports normal or reverse-acting output
    • Supports sink or source output wiring
    • User-selectable filtering (none, low, med., high)
    • Fast response (as low as 22ms)
    • Selectable upscale or downscale operation for sensor errors and lead-break detection
    • NAMUR-compliant output loop current
    • Shock (25g) and vibration (4g) resistant
    • 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

    TT235 User Manual (Log in to download the file)

  • Software

    TT230 Series Windows Configuration Software (Log in to download the file)
    Agility Config Tool (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
      $95$245
      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
      $40$160
      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