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Product short description:
  • 100 ohm Pt RTD or 0-900 ohm input
  • 4-20mA output (sink/source)
  • 12-32V DC loop/local power
  • USB configuration

The TT231 model is a space-saving two-wire transmitter that converts a 100 ohm Platinum 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.

Click here to watch a short AcroMaggie video highlighting the TT230 Series.

Kindly go to setting page and check the option "Place them manually"

The TT231 model is a space-saving two-wire transmitter that converts a 100 ohm Platinum 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 Ω/Ω/°C, 0-200°C input, 4-20mA output, upscale break detection.

Input Configuration: Two-, three- or four-wire sensor input connections.

Input Ranges:
100 ohm Platinum RTD, alpha = 375-393, 385 (default), -50 to 850°C (-58 to 1562°F)
0 to 900 ohms linear resistance
Programs in °C, °F, or ohmic integer values only.

Zero Adjust:
RTD 3/4 wire: -50, -17.78, or 0°C (-58, 0, 32°F).
RTD 2 wire: 0°C (32°F) fixed.
RES: 0 or 100 ohms.

Full-Scale Adjust:
RTD: up to 850°C (1562°F), 50°C (58°F) span minimum.
Resistance: up to 900 ohms, 8 ohm span minimum.

Excitation Current: 0.5mA, nominal, each ± lead.

Lead-Wire Compensation: 25 ohms per lead.

Lead Break (Sensor Burnout) Detection: Configurable for either upscale or downscale.

Input Filter Bandwidth: -3dB at 700Hz, typical, normal mode filter.

Output

Output Range: 4 to 20mA DC.
Under-scale limit adjustable for 2.1 to 3.6mA, nominal.
Over-scale limit adjustable for 21 to 30mA, nominal.

Output Fault Limits (Sensor Fault): 0.4mA below selected under-scale threshold and 1.0mA above over-scale threshold, typical.

Output Compliance:
Rload = (Vsupply – 8.6V) / 0.020A.
Rload = 0 to 750 ohms @ 24V DC.

Output Accuracy: Better than ±0.1% of span, typical for spans less than 500°C. Includes the effects of repeat-ability, 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): 500μS, typical with 250 ohm load (to reach 98% of final output value).

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: 9-32V DC SELV (Safety Extra Low Voltage), 30mA max.

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
  • Flexible RTD or linear resistance input ranges (any 100 ohm Pt RTD with 375-393 alpha)
  • Space-saving 12.5mm (0.5 inch) unit with pluggable terminals for convenient wiring
  • High accuracy, linearity, stability, and reliability
  • Advanced analog signal conditioning ASIC eliminates digitization errors
  • Low temperature drift (<80ppm/°C)
  • Supports sink or source output wiring
  • Programmable over/under-range limits
  • Selectable upscale or downscale operation for sensor errors and lead-break detection
  • NAMUR-compliant output loop current
  • 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
Temperature Measurement Select the Best Temperature Sensor for Process Control Applications White Paper (Log in to view the file)
How to Select the Best Temperature Sensor for Process Control Applications White Paper Thermocouples versus Resistance Temperature Detectors Many users simply look to fill the basic needs of their application and do not worry much about their choice of temperature sensing technology. That is, they will make a selection based simply on temperature range and...
Temperature Measurement Using RTDs White Paper (Log in to view the file)
The Basics of Temperature Measurement Using RTDs Temperature reigns as the most often measured process parameter in industry. Most industrial applications require that a temperature be measured remotely, and that this signal be transmitted some distance. An industrial transmitter is commonly used to amplify, isolate, and convert the low-level sensor signal to a high level...

Specifications

Manuals

TT231 User Manual (Log in to download the file)

TT230 Series Windows Configuration Software (Log in to download the file)
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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.

    A number of high-performance features help provide convenient and dependable operation. The green LED indicates that power is being received and blinks if the connected device draws too much current. An internal jumper lets you switch from Full Speed (12 Mbps) to Low Speed (1.5 Mbps) communication. The reset button offers a simple way to reinitialize a connected device without breaking the cable connection. High-retention USB sockets keep cables securely attached under shock and vibration.

  • Features & Benefits

    • Easy setup and digital calibration via USB with Windows configuration software
    • Flexible RTD or linear resistance input ranges (any 100 ohm Pt RTD with 375-393 alpha)
    • Space-saving 12.5mm (0.5 inch) unit with pluggable terminals for convenient wiring
    • High accuracy, linearity, stability, and reliability
    • Advanced analog signal conditioning ASIC eliminates digitization errors
    • Low temperature drift (<80ppm/°C)
    • Supports sink or source output wiring
    • Programmable over/under-range limits
    • Selectable upscale or downscale operation for sensor errors and lead-break detection
    • NAMUR-compliant output loop current
    • 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
  • Tech Papers

    Temperature Measurement Select the Best Temperature Sensor for Process Control Applications White Paper (Log in to view the file)
    How to Select the Best Temperature Sensor for Process Control Applications White Paper Thermocouples versus Resistance Temperature Detectors Many users simply look to fill the basic needs of their application and do not worry much about their choice of temperature sensing technology. That is, they will make a selection based simply on temperature range and...
    Temperature Measurement Using RTDs White Paper (Log in to view the file)
    The Basics of Temperature Measurement Using RTDs Temperature reigns as the most often measured process parameter in industry. Most industrial applications require that a temperature be measured remotely, and that this signal be transmitted some distance. An industrial transmitter is commonly used to amplify, isolate, and convert the low-level sensor signal to a high level...
  • Specs & Data Sheets

    Specifications

    Manuals

    TT231 User Manual (Log in to download the file)

  • Software

    TT230 Series Windows Configuration Software (Log in to download the file)
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  • Additional information

    Additional information

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

    USB-Isolator: includes USB cable