User Manual for AML Oceanographic’s Micro SV & P 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 SVP, 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 Pressure Sensor Precautions
Though the pressure sensor can survive pressures of 1.5 times the full-scale pressure
rating of the sensor a recalibration of the sensor will be required.
Caution, the burst pressures of the sensors are as follows:
0 to 200 bar full scale sensors
3000 PSI
400 to 1000 bar sensors
15000 PSI
6.1.3 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).
