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AML Oceanographic AML-3 LGR CTD 500m

The AML-3 CTD 500m is an all inclusive package built around the AML-3 Logger with Conductivity-Temperature and Pressure (500 dBar) X2change™ sensors.

  • AML Oceanographic AML-3 LGR CTD 500m
AML Oceanographic
A300-2261 Keating Cross Rd
V8M 2A5 Saanichton


The AML-3 series is a highly configurable family of multiparameter sondes designed for a wide range of data collection applications. The ‘3’ designation refers to the number of sensors that may be simultaneously installed on the instrument’s endcap. This kit comes with conductivity-temperature and 500 dbar pressure X2change™ sensors.

The LGR versions (ie. AML-3 LGR) are self-powered via a rechargeable internal battery and have a mechanical on/off switch on the bulkhead. The AML-3 LGR is most commonly used for vertical profiling of the water column with internal logging of sensor measurements and seamless data transfer via WiFi or USB on recovery.

X2change™ is the industry’s leading family of field-swappable sensor heads. Each sensor head contains its own embedded calibration and can be moved from instrument to instrument without impacting accuracy. Changing sensors is easy: simply unscrew one sensor head and replace it with another.

Key Benefits:

Zero Down Time – With X2•Series sensors, recalibrated sensors are sent to the instrument instead of sending the instrument to the recalibration centre.

Reduce Logistical Costs – With X2•Series small sensor heads are shipped instead of heavy instruments.

Increased Flexibility – Field-swappable sensor heads enable any organization – big or small – to become a virtual recalibration centre by stocking spare calibrated sensor heads.

One Instrument, Multiple Applications – the ability to change sensor type on any instrument to suit specific application requirements. This means instrument duplicates (identical instruments dedicated to different pressure ranges, separate instrument for Turbidity, pH, Chlorophyll, etc) become a thing of the past.

Improved absolute pressure accuracy – You may choose the best full scale pressure range to suit your deployment depth.


*Please note that specs may change depending on X2change™ sensor configuration.


  • Weight in air [kg]
  • Diameter [mm]
  • Length [mm]
  • Housing Material
    Acetal housing with stainless steel protective cage
  • Min. operating power [V]
  • Max. operating power [V]
  • Battery
  • Battery type
    Lithium ion
  • Battery duration [hr]
  • Max. depth [m]
  • Max. pressure [bar]
  • Operating temperature: min. [°C]
  • Operating temperature: max. [°C]
  • Pressure sensor
  • Resolution of pressure [% FS]
  • Accuracy of pressure sensor
  • Temperature sensor
  • Min. temperature [°C]
  • Max. temperature [°C]
  • Resolution of temperature [°C]
  • Accuracy of temperature measurement
    0.005 °C or 0.002 °C
  • Conductivity sensor
  • Resolution of conductivity [10^-3 S/m]
  • Accuracy of conductivity measurement
    0.01 mS/cm 5 or 0.003mS/cm 5
  • Resolution of sound velocity [m/s]
  • Description of additional sensors
    One additional sensor may be attached externally. Instrument compatible with all other X2change Sensors including Turbidity, pH, Dissolved Oxygen, and more. Please contact AML Oceanographic for customized configurations.
  • Connectors
  • Internal memory
  • Internal Memory [MB]
  • Type of internal memory
    SD Card
  • Software name
    Sailfish Software
  • Distinguishable features
    Transfer data via USB or WiFi. Exchangeable technology ensures total flexibility of sensor configuration, regardless of application.

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