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SHARKY 774 compact

SHARKY 774 compact

ULTRASONIC COMPACT ENERGY METER

Application

SHARKY 774 COMPACT ultrasonic energy meter is designed for measuring the energy consumption in heating or bifunctional (heating/cooling) application for billing purposes. Its static ultrasonic technology is based on the measurement of the transit time. It offers many benefits: no moving parts (reduces wear and tear of the metering components), low pressure loss, wide dynamic measuring range, low start flowrate and insensitiveness to suspended particles.

Features

  • M-Bus or Wireless M-Bus (OMS radio 868 MHz) communication. Enhanced transmission performance is achieved when combined with Diehl Metering AMR system technology
  • Heat-transfer fluid: water
  • Constant high measuring rates of the temperatures and volume with up to 12 years battery life time
  • 8-digit LCD
  • Removable calculator (0.45m coaxial cable) ensuring comfortable reading
  • General
    ApplicationHeating or bifunctional (heating /cooling) | Heat-transfer fluid: glycol-free water
    ApprovalMID (DE-13-MI004-PTB008)
    Environmental classClass 2
    Ambient classClass E2 + M2
    Ambient operating temperature°C+5 ... +55 (<35 °C have a positive effect on battery lifetime)
    Ambient storage temperature°C-25 ... +60 (>35 °C max. 4 weeks)
    CommunicationM-Bus or radio
    Frequency band868 or 434 MHz
    Type of radio telegramOpen Metering Standard (OMS)
    Transmission data updatingOnline - no time delay between value measurement and data transmission
    Data transmissionUnidirectional
    Sending intervalRapid mode (drive-by): 14 s + synchron telegram: 900 s | standard mode (walk-by): 64 s + synchron telegram: 900 s

  • Calculator - basic features
    Protection classIP 65
    Battery supply3.6 VDC (2xAA-cell), up to 12 years lifetime (at standard conditions of use and temperature)
    Battery1 lifetime - radioRapid mode: up to 7 years; standard mode: up to 11 years (depends on sending interval)
    Battery1 lifetime - M-BusUp to 12 years
    Temperature sensor typePt 500, 2-wire; Ø 5.2 mm
    Cable length of temperature sensorm1.45 / 1.95
    Absolute temperature rangeΘ°C+1 ... +105 (+130 in option)
    Measuring cycle - flows2
    Measuring cycle - temperature sensors16
    Starting temperature differenceΔΘK0.125
    Min. temperature differenceΔΘminK3 (MID approved)
    Max. temperature difference (heating)ΔΘmaxK127 (MID approved)
    Interfaces standardOptical ZVEI interface
    Interfaces optionalM-Bus or radio
    Extensive readable data memoryPeriodical log2; 3 history logs; event memory
    1 Battery exchangeable at lab
    2 Programmable storage interval (daily, weekly, monthly, ...)
  • Flow sensor - basic features
    Protection class flow sensorIP54 (heating) - IP68 (heating/cooling)
    Material of the flow sensor bodyBrass
    Temperature range heating°C+5 ... +105*
    +5 ... +105
    Temperature range heating with cooling tariff°C5 ... 105
    Dynamic range (qp/qi)1:100
    Mounting position flow sensorAny position, calming section not necessary
    * +130°C in option
  • Display
    Display indicationLCD, 8-digit
    UnitsMWh - kWh - GJ - °C - m³
    Total values99,999,999 - 9,999,999.9 - 999,999.99 - 99,999.999
    Values displayedEnergy - Power - Volume - Flow rate - Temperature and more
    * MWh - GJ in option
  • Interfaces
    OpticalZVEI interface, for communication and testing, M-Bus protocol
    M-BusConfigurable telegram, according to EN13757-3, data reading via two wires with non polarity (1.5 m), auto baud detect (300 and 2400 baud), galvanically isolated, one M-Bus load
    Wireless M-BusOpen Metering Standard (OMS), Generation 3 Profile A or Generation 4 Profile B; frequency band 868 or 434 MHz
  • Technical data flow sensor
    Nominal flow rateqpm³/h1.52.5
    Nominal diameterDNmm1520
    Overall lengthLmm110130
    Starting flow ratel/h2.54
    Minimum flow rateqil/h1525
    Maximum flow rateqsm³/h35
    Overload flow ratem³/h4.66.7
    Operating pressurePNbar1616
    kv value (qp² (m³/h) = kv² x Δp (bar))4.337.91
    Pressure loss at qpΔpmbar120100
  • Dimensions thread version
    SHARKY 774 compact SHARKY 774 compact
    SHARKY 774 compact SHARKY 774 compact
    Nominal flow rateqpm³/h1.52.5
    Nominal diameterDNmm1520
    Overall lengthLmm110130
    Overall length with couplingL2mm190230
    Length of calculatorL1mm9090
    HeightHmm14.518
    HeightH1mm5558
    Height of calculatorH2mm2727
    Height of calculatorH3mm4040
    Width of calculatorBmm135135
    Connection thread on meterinchG¾BG1B
    Connection thread of couplinginchR½R¾
    Weightkg0.700.77
  • Pressure loss graph / Typical error graph
    SHARKY 774 compact SHARKY 774 compact
    SHARKY 774 compact SHARKY 774 compact

Diehl Stiftung & Co. KG © 2023

Diehl Metering provides smart metering solutions to utilities companies through the intelligent networking of various metering devices into larger data platforms. Thanks to more than 20 years of experience with the company’s own radio technology, Diehl Metering has at its disposal excellent expertise in communications within the Internet of Things.

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