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  • BWL-ET

    Suitable for measure changing underground water levels in landslide areas.

    The BWL-ET series is strain gage type water level transducers designed to measure changing underground water levels in landslide areas, etc. They do not require any compensation against fluctuations in atmospheric pressure, and thus ensure accurate measurement. A temperature measuring function lets them perform simultaneous measurement of water level and temperature.
    Features
    ?? Stainless steel enclosure ensures excellent corrosion resistance, while a built-in lightning arrester assures safe operation without receiving any effect of thunderbolts.
    ?? Simultaneous measurement of water level and water temperature
    ?? Easy installation, maintenance and inspection
    ?? Applicable for measurement of underground water levels in landslide areas and water levels of dams, rivers, intake wells and tanks
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    Specifications
    Model Rated Capacity(Water Level) Cable Length
    BWL-10MET 10m 30m
    BWL-20MET 20m 40m
    BWL-30MET 30m 50m

    Water Level Measurement
    Rated Capacity See table below
    Nonlinearity Within ??0.15% RO
    Hysteresis Within ??0.10% RO
    Repeatability 0.05% RO or less
    Rated Output 2 mV/V (4000??m/m) or more
    Temperature Measurement
    Rated Capacity -20 to 60??C
    Measurement Error ??0.5??C (-20 to 60??C)
    (Refer to Small-sized Temperature Transducer BTS-100AT)
    Environmental Characteristics
    Safe Temperature Range -20 to 60??C (non-freezing)
    Compensated Temperature Range 0 to 50??C (non-freezing)
    Temperature Effect on Zero Balance Within ??0.01% RO/??C
    Temperature Effect on Output Within ??0.01%/??C
    Electrical Characteristics
    Safe Excitation Voltage 10 V (Current 28.5 mA)
    Recommended Excitation Voltage 2 to 6 V (Current 5.7 to 17.1 mA)
    Input Resistance 350???2% at 0??C
    Output Resistance 450???2% at 0??C
    Cable 4-conductor (0.5 mm 2 ) capillary-equipped chloroprene
    shielded cable, 11.3 mm diameter,
    bared at the tip (Shield is not connected to the chassis)
    Mechanical Properties
    Safe Overload Rating 150%
    Weight Approx. 400 g
    Other
    Built-in lightning arrester
    Atmospheric pressure compensation type
    * For use under freezing environment or where the transducer is exposed to corrosive liquid or gases, contact a KYOWA sales representative.
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