Section 2 | Sensors
© 2021
– Valeport Ltd
Page | 2
2 Sensors
2.1 Sound Velocity Measurement
Utilising Valeport's latest design for the world's most accurate sound velocity sensor, each
measurement is made using a single pulse of sound travelling over a precisely known distance, so
is independent of the inherent calculation errors present in CTD calculated data. Valeport's unique
digital signal processing technique virtually eliminates signal noise and gives an almost
instantaneous response; the digital measurement is also entirely linear, giving predictable
performance under all conditions.
Range:
1375 - 1900m/s
Resolution:
0.001m/s
Accuracy:
±0.020m/s
2.2 Temperature
The uvSVX is fitted with an accurate, fast response Platinum Resistance Thermometer (PRT)
temperature sensor.
Type:
PRT
Range:
-5°C to +35°C
Resolution:
0.001°C
Accuracy:
±0.01°C
2.3 Pressure
The uvSVX is fitted with a high accuracy, 0.01% of full scale, temperature compensated piezo-
resistive pressure transducer.
The Pressure Module is interchangeable
Type:
Strain Gauge
Range:
individual modules
10, 30, 50, 100, 200, 300, 400 or 600 Bar
1 bar is approximately equal to 10m depth
Resolution:
0.001 units (selectable)
Accuracy:
±0.01% or full range
Response Time:
1 milliseconds
