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Product short description:
  • Multi-range ±20mA or ±500mV input
  • 4-20mA ouput (sink/source)
  • 12-32 V DC loop/local power

The TT236 model is a space-saving two-wire transmitter that isolates and converts a DC current or low voltage input to a proportional 4-20mA control signal. A single unit supports both voltage and current input for extra flexibility. 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.

TT236: Current / mV Input Two-Wire Transmitter Description

The TT236 model is a space-saving two-wire transmitter that isolates and converts a DC current or low voltage input to a proportional 4-20mA control signal. A single unit supports both voltage and current input for extra flexibility. Power is received from the output loop current or a DC supply when using a three-wire connection.

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.

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/Calibration:
Input: 4 to 20mA, medium filter.
Output: 4 to 20mA.

Input Ranges and Accuracy:
Range                                                        Accuracy
±500mV                                               ±0.05% of span
0 to 500mV                                         ±0.05% of span
±20mA                                                 ±0.05% of span
0 to 20mA                                           ±0.05% of span
4 to 20mA                                           ±0.05% of span
0 to 11.17mA (for AC sensor)      ±0.05% of span
±1mA                                                    ±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 Impedance:
Current input: 24.9 ohms.
Voltage input: 15M ohms.

Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 5.6V clamp level typical.

Input Resolution:
Bipolar input: 1 part in 50000 (±25000).
Unipolar input: 1 part in 25000.

Input Filter: Selectable digital filtering settings (low, medium, high).

Input Filter Bandwidth:
Normal mode plus digital filtering within the ADC.
Bandwidth (-3dB) varies with digital filter setting from 4Hz without filtering to 0.33Hz with high filtering.

Noise Rejection (Common Mode, High Filter): 130dB @ 60Hz, typical with 100 ohm input unbalance

Output

Output Range: 4 to 20mA DC.

Output Compliance
Rload = (Vsupply – 11V) / 0.020A.
Rload = 0 to 650 ohms @ 24V DC.

Output Response Time (for step input change)

Time to reach 98% of output value (typical)
Low filter                  50 milliseconds
Medium filter        150 milliseconds
High filter             1200 milliseconds

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.

Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.

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.

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
  • Single unit supports unipolar and bipolar input ranges up to ±20mA or ±500mV DC
  • Accepts 0-20A AC input (with external sensor)
  • Space-saving 12.5mm (0.5 inch) unit with pluggable terminals for convenient wiring
  • High accuracy, linearity, stability, and reliability
  • User-selectable filtering (low, medium, high)
  • Supports sink or source output wiring
  • Supports reverse-acting (inverse) output
  • Selectable upscale or downscale operation for sensor errors and lead-break detection
  • 1500V input isolation
  • 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
Why Do I Need Electrical Isolation? - 8500988 (Log in to view the file)
Why do we need signal isolation? Acromag is in the business of signal conditioning. We manufacture circuits that amplify, isolate, filter, and convert one signal form to another. Most of these circuits also provide electrical isolation. However, added isolation has a cost. Thus, sometimes customers either question their need for isolation or fail to recognize...
How to Wire a 2 or 4-Wire Current Input Module - 8401048
Application Note: Current Input Wiring: 2-Wire & 4-Wire TT236 / SP236 / DT236 2/3-Wire Transmitters & Splitters TT336 / SP336 / DT336 4-Wire Transmitters & Splitters Featured Products: DT236: Current / milliVolt Input Two-Wire Dual Transmitter DT336: Current / Voltage Input Four-Wire Dual Transmitter SP236: Two-Wire Current / milliVolt Input Signal Splitter SP336: Four-Wire Current...
How to Re-transmit and Isolate 4-20mA Signals from Remotely-Mounted 3-Wire Gas Detection Sensors - 8400957
Defining the Problem: Signals from 3-wire remote sensors that monitor combustible and toxic gases are typically transmitted directly to the remote gas monitor or controller. However, in some cases, it’s desirable to send the signal to more than one destination. This can either be accomplished by re-transmitting the existing signal to additional locations; or by...
How to Choose a 4-20mA Isolator - 8400850
Very often, the simple task of choosing an isolator requires more than just comparing the number of channels and the cost per point. To help you with this exercise, here are some concepts to know when you need to choose a 4-20 mA isolator. The lowest cost approach is a two-wire system using output loop-powered...

Manuals

TT236 User Manual (Log in to download the file)

TTC-SIP: Software Interface Package Information Page (Log in to download the file)
TT230 Series Windows Configuration Software (Log in to download the file)
Agility Config Tool (Tethered) (Log in to download the file)
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    TT230-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
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    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.
       
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Additional information

Weight 8 oz
Dimensions 4.51 × 0.5 × 3.9 in
Part Number

TT236-0600: Transmitter, current/millivolt input

Configuration

Agility Mobile App, Factory Calibration, USB Configuration, Windows Software Configuration

Product Series

TT230 Series

Power

Loop Power

  • Description

    TT236: Current / mV Input Two-Wire Transmitter Description

    The TT236 model is a space-saving two-wire transmitter that isolates and converts a DC current or low voltage input to a proportional 4-20mA control signal. A single unit supports both voltage and current input for extra flexibility. Power is received from the output loop current or a DC supply when using a three-wire connection.

    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.

    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/Calibration:
    Input: 4 to 20mA, medium filter.
    Output: 4 to 20mA.

    Input Ranges and Accuracy:
    Range                                                        Accuracy
    ±500mV                                               ±0.05% of span
    0 to 500mV                                         ±0.05% of span
    ±20mA                                                 ±0.05% of span
    0 to 20mA                                           ±0.05% of span
    4 to 20mA                                           ±0.05% of span
    0 to 11.17mA (for AC sensor)      ±0.05% of span
    ±1mA                                                    ±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 Impedance:
    Current input: 24.9 ohms.
    Voltage input: 15M ohms.

    Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 5.6V clamp level typical.

    Input Resolution:
    Bipolar input: 1 part in 50000 (±25000).
    Unipolar input: 1 part in 25000.

    Input Filter: Selectable digital filtering settings (low, medium, high).

    Input Filter Bandwidth:
    Normal mode plus digital filtering within the ADC.
    Bandwidth (-3dB) varies with digital filter setting from 4Hz without filtering to 0.33Hz with high filtering.

    Noise Rejection (Common Mode, High Filter): 130dB @ 60Hz, typical with 100 ohm input unbalance

    Output

    Output Range: 4 to 20mA DC.

    Output Compliance
    Rload = (Vsupply – 11V) / 0.020A.
    Rload = 0 to 650 ohms @ 24V DC.

    Output Response Time (for step input change)

    Time to reach 98% of output value (typical)
    Low filter                  50 milliseconds
    Medium filter        150 milliseconds
    High filter             1200 milliseconds

    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.

    Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.

    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.

    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.

  • Features & Benefits

    • Easy setup and digital calibration via USB with Windows configuration software
    • Single unit supports unipolar and bipolar input ranges up to ±20mA or ±500mV DC
    • Accepts 0-20A AC input (with external sensor)
    • Space-saving 12.5mm (0.5 inch) unit with pluggable terminals for convenient wiring
    • High accuracy, linearity, stability, and reliability
    • User-selectable filtering (low, medium, high)
    • Supports sink or source output wiring
    • Supports reverse-acting (inverse) output
    • Selectable upscale or downscale operation for sensor errors and lead-break detection
    • 1500V input isolation
    • 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

    Why Do I Need Electrical Isolation? - 8500988 (Log in to view the file)
    Why do we need signal isolation? Acromag is in the business of signal conditioning. We manufacture circuits that amplify, isolate, filter, and convert one signal form to another. Most of these circuits also provide electrical isolation. However, added isolation has a cost. Thus, sometimes customers either question their need for isolation or fail to recognize...
    How to Wire a 2 or 4-Wire Current Input Module - 8401048
    Application Note: Current Input Wiring: 2-Wire & 4-Wire TT236 / SP236 / DT236 2/3-Wire Transmitters & Splitters TT336 / SP336 / DT336 4-Wire Transmitters & Splitters Featured Products: DT236: Current / milliVolt Input Two-Wire Dual Transmitter DT336: Current / Voltage Input Four-Wire Dual Transmitter SP236: Two-Wire Current / milliVolt Input Signal Splitter SP336: Four-Wire Current...
    How to Re-transmit and Isolate 4-20mA Signals from Remotely-Mounted 3-Wire Gas Detection Sensors - 8400957
    Defining the Problem: Signals from 3-wire remote sensors that monitor combustible and toxic gases are typically transmitted directly to the remote gas monitor or controller. However, in some cases, it’s desirable to send the signal to more than one destination. This can either be accomplished by re-transmitting the existing signal to additional locations; or by...
    How to Choose a 4-20mA Isolator - 8400850
    Very often, the simple task of choosing an isolator requires more than just comparing the number of channels and the cost per point. To help you with this exercise, here are some concepts to know when you need to choose a 4-20 mA isolator. The lowest cost approach is a two-wire system using output loop-powered...
  • Specs & Data Sheets

    Manuals

    TT236 User Manual (Log in to download the file)

  • Software

    TTC-SIP: Software Interface Package Information Page (Log in to download the file)
    TT230 Series Windows Configuration Software (Log in to download the file)
    Agility Config Tool (Tethered) (Log in to download the file)
  • Accessories

    • Compare

      4001-252: DIN Rail End Stops

      • DIN rail end stop for hazloc approvals
      Select options
    • Compare

      5020-350: Toroidal AC Current Sensor

      • AC Current Sensor to precondition an AC current input signal
      • Highly accurate toroidal instrument transformer that converts an AC current signal to a safe, low level, DC milliampere signal (0 to 11.17mA).
      Select options
    • Compare

      TT230-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
  • Additional information

    Additional information

    Weight 8 oz
    Dimensions 4.51 × 0.5 × 3.9 in
    Part Number

    TT236-0600: Transmitter, current/millivolt input

    Configuration

    Agility Mobile App, Factory Calibration, USB Configuration, Windows Software Configuration

    Product Series

    TT230 Series

    Power

    Loop Power