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    • Heat energy calculator KARAT-306

    Heat energy calculator KARAT-306

    • Heat energy calculator KARAT-306

    KARAT-306 is used for heat calculation in all water-based systems with temperatures from 0 °C to 150 °C.
    KARAT-306 is a heat energy calculator, which comprises a flow sensor and 2 wired temperature sensor pairs.

    LoRaWAN, GSM, M-Bus or Ethernet ready

    KARAT-306 is comes with option of being read remotely using LoRaWAN, GSM, M-Bus or Ethernet.
    Wired M-Bus, Ethernet or wireless LoRaWAN, GSM is integrated in the meter for remote data reading.

    More

    Characteristics

    Functionality

    • KARAT-306 is ideal for buildings. The meter is simple to install, read and verify. KARAT-306 contributes to keeping the annual operating costs at a minimum with its unique combination of high measuring accuracy and long lifetime.
    • KARAT-306 has a leakage control function. This function is available in case the calculator is connected to flow meters installed in both inlet and outlet pipes.
    • KARAT-306 receives volume pulses from connected flow meters and calculates energy for every predetermined water volume. The energy calculation includes temperature measurements in inlet and outlet pipes.
    • KARAT-306 can be equipped by 3.6 V lithium battery, or powered by 24 VDC external power supply.
    • KARAT-306 is equipped by optical interface and can have of the following four interfaces: RS-485, RS-232, M-Bus or LoRaWAN by order. Due to these modules remote data reading is possible.
    • KARAT-306 calculates energy according to the formula described in EN 1434-1:2011.
      The energy calculation in a simplified way be expressed as:
      Energy = V x ∆Θ x k.
      V is the supplied water volume
      ∆Θ is the temperature difference measured
      k is the thermal coefficient of water

    Models

    Maximum number of sensors to be connected
    Model Consumption sensors/
    Electric power meter
    Temperature sensors Pressure sensors
    KARAT-306-01 2 2 0
    KARAT-306-02 5 2 0
    KARAT-306-03 5 4 0
    KARAT-306-04 5 4 4

    Meter data

    Temperature range, θ −50°C… +150 °C
    Differential range, ∆Θ 3...147 K
    Accuracy ±(0,5 + ∆Θmin/∆Θ)%
    Temperature sensors Pt100, Pt500
    Types of meters with a pulse output, which can be connected to KARAT-306 – KARAT-520
    – Electronic meters with passive pulse output
    – Mechanical meters with reed switch
    Data logger 1536 hours, 1456 days, 48 months, 4 years, 1008 events

    Mechanical data

    Environmental class Meets EN 1434 Class A and C
    Ambient temperature 1…55 °C non condensing, closed location (indoor installation)
    Protection class IP65
    Storage temperature -25…50 °C
    Weight 0.7 kg excluding sensors and flow meter
    Dimensions 178x125x70 mm

    OEM
    • We offer the following metering instruments
      under KARAT trademark
    • We offer the following metering instruments
      under YOUR trademark

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    • Smart meters
    • Apartment-level heat meter
    • Apartment-level water meter
    • Heat energy calculators
    • Flowmeter
    • Communication equipment

    KARAT FACTORY offers IoT-solutions customized for utility market.

    We introduce smart meters, technologies for integration of the LoRaWAN standard interface, as well as web-services for operation in digital networks.

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    Russia
    Russia, Yekaterinburg
    ved@karat-npo.ru
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