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  • TM-2HLI Isolated Head Mount Transmitter, RTD/TC Input, 4-20mA Output

    Designed for Temperature Probes

    • Bridge Key - $

      Universal USB Communications Kit

        Out of stock. Pre-order available.

    What it does:
    The TM-2HLI accepts an RTD or TC temperature input signal and outputs a 4-20mA signal.

    The TM-2HLI is a DIN B style head mount transmitter that accepts either an RTD PT100/1000 input signal, or a thermocouple input signal, and converts it to an industry standard 4–20mA output. The TM-2HLI offers 3750V AC isolation between the input and output.

    • High isolation
    • High accuracy 0.03%
    • Loop powered
    • Fast, hassle-free USB programming using Define ToolBox
    • Enhanced EMC specifications

    Easy USB programming using Define ToolBox

    • No power supply or calibrator required
    • Uses the universal USB Bridge Key (sold separately) for PC connection

    In addition to this software a Bridge Key is required for the configuration of this product. You must order one unless you already have one from a previous product purchase.

    Power supply
    9.5-36V DC
    Supply voltage sensitivity
    < ±0.005%/V FSO
    General Specifications
    Accurate to
    <±0.03% FSO typical
    Ambient drift
    <±0.003%/°C FSO typical
    Isolation test voltage
    Between input/output: 3750V AC for 1min
    Noise immunity
    125dB CMRR average (2.0kV DC limit)
    RF immunity
    <1% effect FSO typical
    Response time
    400msec typical (10–90% 300msec typical)
    Thermocouple Input
    Thermocouple types
    B, E, J, K, N, R, S, T
    Input impedance
    1MΩ min
    T/C lead resistance
    100Ω max
    Cold junction compensation
    –4 to 194°F (–20 to 90°C)
    CJC error
    < ±1°C
    E, J, K, N, T: < ±1°C. B, R, S: < ±2°C
    Ambient drift
    E, J, K, N, T: < ±0.05°C. B, R, S: < ±0.2°C
    Sensor break output drive
    Function high upscale/low downscale
    USB programmable zero
    0–±99% of the span
    RTD Input
    RTD input type
    PT100 or PT1000 DIN 3-wire type (2-wire can be used with off set calibration)
    Lead wire resistance

    PT100: 10Ω/wire max. Pt1000: 5Ω/wire max
    0.02% FSO off set error per Ω of lead resistance
    Sensor current
    0.15mA nominal
    Sensor break output drive
    Function high upscale/low downscale
    USB programmable zero
    0–±99% of the span
    USB programmable span
    –328 to 1562°F (–200 to 850°C)
    Linearity (PT100)
    0.02% FSO for span inputs ≤200°C. 0.1% FSO for span inputs ≤850°C
    Linearity (PT1000)
    0.02% FSO for span inputs ≤200°C. 0.2% FSO for span inputs ≤520°C
    Analog Output (Retransmission)
    Analog output type
    4-20mA (loop powered)
    Output load resistance
    700Ω at 24V DC (50Ω/V above 9.5V DC)
    Max output current
    Limited to <28mA (Emission & immunity)
    Define ToolBox
    Simple programming using Define ToolBox (requires Bridge Key, sold separately)
    In head mount, designed for temperature probes
    Dimensions (H x W x D)
    0.91 x 1.73 x 1.73" (23 x 44 x 44mm)
    Environmental Conditions
    Operating temperature
    –4 to 185°F (–20 to 85°C)
    Storage temperature
    –4 to 212°F (–20 to 100°C)
    Operating humidity
    5–85%RH max (non-condensing)
    Certifications & Compliances
    Emissions (EN 61326). Immunity 61326). Safety (EN 61010-1)

    TM-2HLI Manual TM-2HLI Manual 17V10, 28-Jun-2017 | (177 KB)

    Define ToolBox

    Define ToolBox

    Smart, simple software to program your non-Zen series products

    Use Define ToolBox software to program your non-Zen series product via your PC. It configures:

    It offers a simple interface for connecting to your compatible device, and a range of flexible configuration options, including an extensive library of pre-calibrated ranges and linearization tables for advanced scaling.


All prices are in US Dollars. For pricing in other currencies, please contact us.