User Manual for AML Oceanographic’s Micro SVT Sensor
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6
PRECAUTIONS AND TROUBLESHOOTING GUIDE
6.1
PRECAUTIONS
6.1.1 Sound Velocity Sensor Precautions
For best accuracy the sound velocity sensor should be allowed to soak in some water for
several minutes before taking a sound velocity reading. This allows the water to wet the
transducer face and better acoustic coupling to the water is achieved.
Prior to storing the Micro SVT, the sound velocity sensor must be washed thoroughly in
fresh water before the sensor is allowed to dry. This will prevent the build up of salt
deposits on the sensor. Any deposits on the transducer face of reflector plate will cause a
shift in the calibration. If deposits are present, soak the sensor in warm fresh water.
Do not allow any objects, debris or bubbles between the sound velocity transducer and
reflector plate. Doing so will cause errors in the data. To avoid bubbles on the transducer
face, tilt the sensor slightly when immersing the unit in the water.
6.1.2 Optional Sensor Precautions
DO
2
Sensor Precautions
The YSI DO
2
sensor must be properly stored when not in use and re-calibrated and
maintained regularly to compensate for sensor drift. Refer to the YSI sensor manual for
details.
The DO2 sensor must not be exposed to pressures greater than 70 dbar (100 psi).
pH Sensor Precautions
The pH sensor must be properly stored in a buffer solution when not in use. The sensor
should be re-calibrated and maintained regularly to compensate for sensor drift. Refer to
the pH sensor manual for details.
The pH sensor must not be exposed to pressures greater than 2000 dbar (2900 psi).
Optical and Acoustic Sensor Precautions
These sensors must be kept clean and the sensing volume must be kept clear of
obstructions. Any objects within the sensing volume will cause errors in the sensor’s
output. The sensing volume is shown in the sensor manual.
6.2
SENSOR INTERACTIONS
The Micro SVT Sensor does not have any interaction between sensors in the standard
configuration. Since additional sensors can be added to the Micro SVT Sensor, or other
machinery and sensors can be located near or electrically connected to the Micro SVT
