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LED/LCD display digital PT100 RTD Temperature transmitter with 24vdc

This is a high-precision temperature transmitter specifically designed for compact industrial spaces. It features a Pt100 platinum resistor at its core and supports a three-wire connection to eliminate lead wire errors, ensuring accurate measurements within a range of -50 to 200°C (expandable). Its main highlight is the integrated high-brightness LED digital display, which allows clear and intuitive reading of real-time temperatures even in dim or vibrating environments, and it also includes a wire break alarm function.
The rear of the instrument comes standard with a Hirschmann connector, enabling tool-free quick plug-in and reliable waterproofing (IP65), greatly simplifying installation and maintenance processes. It outputs a standard 4-20mA signal, compatible with various PLC/DCS systems. It is widely used in hydraulic stations, injection molding machines, HVAC pipelines, and small reactors where on-site visual monitoring is required.

    Working Principle

    The resistance of a PT100 thermal resistor changes with temperature: as the temperature rises, the resistance increases, and vice versa. The measurement circuit inside the transmitter, such as a Wheatstone bridge or constant current circuit, measures the resistance value of the PT100. Since the resistance-temperature relationship of a PT100 is not perfectly linear, the microprocessor or dedicated chip built into the transmitter linearizes the signal according to standard calibration tables. At the same time, it compensates for drift caused by the influence of ambient temperature on its electronic components, amplifies and conditions the small resistance change signal, and finally outputs a 4-20 mA current signal, a 0-5V/0-10V voltage signal, or digital signals 

    Product Features

    1. Small in size, can be used in restricted installations, with thin pipes and compact equipment


    2. Comes with a display, quick to debug, easy for inspection


    3. High cost-performance, lightweight, simple wiring


    4. Anti-interference, stable, compatible with PLC/DCS


    5. High temperature resistance, waterproof, suitable for HVAC and automation equipment

     application scenarios

    1. Food and Beverage Industry: Local temperature monitoring of sterilizers and fermentation tanks (requires hygienic design).


    2. Pharmaceutical Industry: Temperature monitoring of purified water systems and sterilizers.


    3. Machinery Manufacturing: Temperature monitoring of injection molding machine barrels, hydraulic oil, and bearings.


    4. HVAC and Energy: Monitoring boiler outlet temperature and heat exchanger temperature difference.


    5. Laboratory Equipment: Temperature display and control for small ovens and incubators.

    Product detail

    ESMWZP-WBH- (1)ESMWZP-WBH- (2)

    Technical Specifications

    Product Name

    PT100 Temperature transmitter

    Input signal

    PT100

    Measuring range

    -50~200℃Normal temperature

    -50~400℃High temperature

    Output signal

    4-20mA/0-5V/0-10V/1-5V/RS485

    Power supply

    12~24VDC

    Probe size

    6*30mm 50mm 100mm 150mm 200mm 250mm 300mm

    (Special sizes can be customized)

    Installation method

    M20*1.5 , G1/4 , G1/2 , 1/4NPT , 1/2NPT

    Note

    ≤200℃Normal temperature

    200℃~400℃: High temperature

    Wiring Definition

    This is a paragraph

    1. Black, White - Power
    2. Green - Ground
    3. Yellow - Common (COM), Blue - Normally Closed (NC), Red - Normally Open (NO)

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