AD375MA Absolute Shaft EncoderAD375MA Absolute Shaft EncoderAD375MA Absolute Shaft EncoderAD375MA Absolute Shaft Encoder
AD375MA Absolute Shaft Encoder

AD375MA Absolute Shaft Encoder

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The AD375MA is a rugged, microprocessor-based, power-efficient shaft encoder for reliable and accurate water level measurement. The built-in digital technology determines the absolute water level from the reference level and the relative rotational movements at…  Read more

BrochureManual
Resolution
  • 1 mm (maximum error +/-1 mm)
  • 375, 150 or 100 pulses per revolution (user adjustable)
Accuracy +/-0.01 % FS
Range

Typical up to +/-30 m water head; endless wire set-up available for water level ranges exceeding 30 m
LCD Type 16x2 character LCD (or OLED on request for -40 °C operation)
Shaft Load Max 2 kg (adaption to higher loads available on request)
Power Supply
  • Operating: 9.0-16 V DC
  • Current Drain: 5 mA @ 12 V DC
  • Battery back-up: Internal lithium
Enclosure IP65 powder-coated aluminium
Connectors Available in ‘push-in’ spring loaded terminal or gland cable entry
Operating Conditions

Temperature Range

  • -40 °C to +60 °C (encoder only)
  • -10 °C to +60 °C (standard LCD; -40 °C OLED version available on request)

Humidity: 95 % non-condensing
Dimensions (L x W x D) 245 x 125 x 150 mm
Mass 1.5 kg
  • Alt

    AUS18-19 Pulley

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  • Alt

    BL01 Beaded Line

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  • Alt

    FP100 / FP150 / FP200 / FP300 Floats

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  • Alt

    FW100 / FW150 / FW200 / FW300 counterweights

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The AD375MA is a rugged, microprocessor-based, power-efficient shaft encoder for reliable and accurate water level measurement. The built-in digital technology determines the absolute water level from the reference level and the relative rotational movements at level increase or decrease. This eliminates any further calculation or conversion in downstream data acquisition devices.

Display and keypad allow user interaction without the need of an additional device. Device settings include user adjustable resolution (375, 150 or 100 pulses per revolution) and adaptation to 3rd party pulleys/ chains and sprockets. Furthermore, current system status and measurement data can be read directly from the display (water level, battery voltage, ...). Measured values are available simultaneously on 4-20 mA and SDI-12 outputs.

The encoder can be float operated or connected to mechanical sensors, chart recorders and weir gates, utilising drive gears or chain and sprocket assemblies.

  • High-resolution measurement 1 mm
  • Absolute water level
  • Parallel data output via 4-20 mA and SDI-12 (or RS232) to connect to up to two data loggers (redundancy)
  • Controls
    • LCD display and two buttons (OLED display for -40 °C operation available on request)
    • Display: measuring range, water level and battery voltage 
    • Sensor configuration
  • Slippage reduction via beaded line and matching perforated disc
  • Robust construction
  • Battery backup

The AD375MA is suitable for capturing the water level in surface waters, groundwater, float shafts, measuring shafts, gauge pipes, etc.

Are you looking for a tailor-made, readyto-use solution? Our experienced engineers develop individual solutions on the basis of your requirements. Please contact us.