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Details about the initial verification process and its validity period.
Guidance on avoiding interference and proper cable placement for reliable operation.
Instructions for cleaning the device and information on its maintenance-free nature.
States compliance with EU directives and provides a link for more information.
Specific technical specifications for input/output functionalities of the device.
Details on the optional M-Bus interface, its compliance, and operating baud rates.
Crucial safety precautions for personnel and procedures during installation.
General guidance and checks to perform before and during installation.
Recommendations and methods for mounting the heat calculator unit.
Detailed instructions for connecting temperature and flow sensors correctly.
How to switch between 2-wire and 4-wire measuring systems using the internal switch.
Guidelines for connecting the flow sensor, including wire length and polarity.
Information on the external power supply, automatic switching to battery, and battery status.
Steps for testing the calculator after installation and checking for errors.
Instructions on how to seal the device to prevent unauthorized opening.
Information regarding authorized personnel for repairs and overhauls.
Details about the initial verification process and its validity period.
Guidance on avoiding interference and proper cable placement for reliable operation.
Instructions for cleaning the device and information on its maintenance-free nature.
States compliance with EU directives and provides a link for more information.
Specific technical specifications for input/output functionalities of the device.
Details on the optional M-Bus interface, its compliance, and operating baud rates.
Crucial safety precautions for personnel and procedures during installation.
General guidance and checks to perform before and during installation.
Recommendations and methods for mounting the heat calculator unit.
Detailed instructions for connecting temperature and flow sensors correctly.
How to switch between 2-wire and 4-wire measuring systems using the internal switch.
Guidelines for connecting the flow sensor, including wire length and polarity.
Information on the external power supply, automatic switching to battery, and battery status.
Steps for testing the calculator after installation and checking for errors.
Instructions on how to seal the device to prevent unauthorized opening.
Information regarding authorized personnel for repairs and overhauls.
The ZENNER multidata is an electronic energy calculator designed for heat meters, offering optional M-Bus and two inputs/outputs. It is a modern and up-to-date heat calculator, featuring expressive symbols in its display and easy menu navigation for simple readout. The device is operated with a single button and is equipped with a long-life battery designed for operation during the initial verification validity period (5 years), with a reserve of at least another year.
The multidata calculator measures and displays energy consumption in MWh, kWh, GJ, or MJ. It processes data from flow sensors (contact pulsers or active pulsers) and temperature sensors (PT500, optional PT100, PT1000) to calculate heat energy. The device complies with the new European Measuring Instruments Directive (MID), meaning it carries a declaration of conformity (e.g., M09) instead of an initial verification stamp. After being placed on the market, national regulations for legal verification apply within the EU. In Germany, the initial verification validity for heat meters is 5 years, after which the device may no longer be used for commercial billing.
The calculator provides status displays and error codes to indicate operational status and detected faults. Symbols like "Flow existent," "Attention!" (for system/device errors), "Data transmission," "Emergency operation," and "External power supply" are shown in the main display. Error codes, such as "Short-circuit return sensor" (1), "Interruption return sensor" (2), "Hardware error" (5), "Battery empty or wrong temp. sensor" (6), "Emergency operation" (100), "Battery life time exceeded" (1000), and "Initial verification expired" (2000), help diagnose issues. If multiple errors occur, their sum is displayed.
The multidata offers various communication options:
General| Brand | Zenner |
|---|---|
| Model | multidata WR3 |
| Category | Calculator |
| Language | English |
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