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 AD375 Shaft Encoder is a rugged, reliable, low-powered device designed for accurate and reliable water level measurements in harsh environments. The built-in LCD display and function buttons allow all parameters, including water level, battery voltage and…  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
  • Internal lithium battery (not supplied)
Enclosure IP54 powder-coated aluminium
Connectors Available with either a push-in-style connector or an IP65 8-pin connector
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 1.8 kg (3.9 lb)
  • Alt

    AUS18-19 Pulley

    …
  • Alt

    BL01 Beaded Line

    …
  • Alt

    FP100 / FP150 / FP200 / FP300 Floats

    …
  • Alt

    FW100 / FW150 / FW200 / FW300 counterweights

    …

The AD375 Shaft Encoder is a rugged, reliable, low-powered device designed for accurate and reliable water level measurements in harsh environments. The built-in LCD display and function buttons allow all parameters, including water level, battery voltage and communication settings, to be easily viewed and changed without the need to connect an external device.

Water level values are output simultaneously via 4–20 mA and SDi-12, allowing for logger redundancy. The resolution can also be set to 375, 150, 100, or a custom number of pulses per revolution, depending on the application. Internal batteries (not supplied) ensure that water level readings are retained in the event of external power loss.

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

  • 1 mm high-resolution accuracy
  • Absolute water level
  • Simultaneous SDI-12 and 4–20 mA output
  • Built-in LCD display and function buttons for user configuration
  • Standard AD375MA and AD375MAC IP65 fully sealed model available with an 8-pin connector.
  • A -40 °C OLED LCD screen is available on request.
  • Compatible with KISTERS beaded line and beaded line pulleys, eliminating errors due to slippage
  • Configurable resolution (pulses per revolution).
  • Internal battery backup
  • Robust construction

The AD375 Shaft Encoder is suitable for accurately measuring water levels in stilling wells in coastal and fresh water applications.

It can also be chain- or sprocket-driven for use in other position-critical applications.