SHARKY 774 compact

COMPACT ENERGY METER | ULTRASONIC

Application

The ultrasonic compact energy meter can be used for measuring the energy consumption in heating application for billing purposes. The measurement principle is static and based on the measurement of the transit time. Ultrasonic technology offers many benefits: no moving parts (avoids wear and tear of the metering components), low pressure loss, large metering dynamics and low start flowrate, intensiveness to suspended particles.

Features

  • AMR Smart Meter
  • M-Bus or wM-Bus Communication. Combined with Diehl Metering AMR System technology highest transmission performance is achievable
  • Constantly high measuring rates (vol.: 2s; temp.: 16s) with up to 12 years battery life time. Current power is calculated and updated every 2s.
  • AA-Cells contain less Lithium (0,7g per piece) than A-Cells. Not affected by dangerous goods transportation rules
  • Springless battery contact (hard-solder) is corrosion-protected
  • MID electromagnetic class E2 – less sensitive to neg. influence, e.g. culprit PWM pump
  • 8-digit LCD offers 3 fractional digits without risk of display overflow. Comfortable reading by removeable calculator (0.45m coax cable)
  • Only 54 mm design hight from pipe center, hence easy to install in compact heat stations
  • General
    ApplicationHeating
    ApprovalMID
    Accuracy classClass 2
    Ambient temperature°C+5 ... +55 (<35 °C have a positive effect on battery lifetime)
    Storage temperature°CTypical +5... +55°C
    Test possibilitiesVia display
    1Battery exchangeable at lab.
  • Calculator - basic features
    Absolute temperature range calculatorΘ°C15 ... 105 (calculator)
    Starting temperature differenceΔΘK0.125
    Min. temperature differenceΔΘminK3 (MID approved)
    Max. temperature differenceΔΘmaxK90 (MID approved)
    Extensive readable data memoryTwo predefined history logs for 720 daily (Log-1) and 120 monthly (Log-2) values of energy, volume and error hours; additonally event memory (error log)
  • Flow sensor - basic features
    Mounting position flow sensorAny position, horizontal, riser or downpipe and overhead
    Protection classIP 54
    Temperature range heating water°C15 ... 90 (MID approved)
    Dynamic range (qp/qi)1:100
    Useful range (qs/qp)2:1
  • Display
    Display indication8-digit
    UnitskWh - MWh - GJ - m³ - °C
    Total values99.999,999
    Values displayedEnergy - Power - Volume - Flow rate - Temperature - etc.
  • Interfaces
    OpticalAccording to ZVEI standard
    M-BusAccording to EN13757-3:2013
    Wireless M-BusAccording to EN13757-4:2013
  • Technical data flow sensor
    Nominal flow rateqpm³/h0.61.51.52.5
    Nominal diameterDNmm15152020
    Overall lengthLmm110110130130
    Starting flow ratel/h12.52.54
    Minimum flow rateqil/h6151525
    Maximum flow rateqsm³/h1.2335
    Overload flow ratem³/h2.54.64.66.7
    Operating pressurePNbar16161616
    Kvs value (Δp=Q2/Kvs2)2.065.485.487.91
    Pressure loss at qpΔpmbar857575100
  • Dimensions thread version
    Nominal flow rateqpm³/h0.61.51.52.5
    Nominal diameterDNmm15152020
    Overall lengthLmm110110130130
    Overall length with couplingL2mm190190230230
    Length of calculatorL1mm90909090
    HeightHmm14.514.51818
    HeightH1mm55555858
    Height of calculatorH2mm27272727
    Height of calculatorH3mm40404040
    Width of calculatorBmm135135135135
    Connection thread on meterInchG¾BG¾BG1BG1B
    Connection thread of couplingInch
    Weightkg0.700.700.770.77
  • Pressure loss graph / Typical error graph