Valeport uvSVX - DASH Formula; User Calibration

Section 5 | Setting Up the uvSVX
© 2021 – Valeport Ltd
Page | 20
5.9 DASH Formula
DASH is a set of equations used to determine the conductivity, salinity and hence density of water
based on the measurement of sound speed, pressure and temperature. Developed in conjunction
with world renowned Oceanographers and extensive field and laboratory investigation, results
cannot be considered WOCE (World Ocean Circulation Experiment) standard of ±0.001-0.003 psu
but ±0.05 psu is sufficient for many operational scenarios.
A new salinity equation for sound speed instruments - Allen - 2017 - Limnology and Oceanography:
Methods - Wiley Online Library
https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lom3.10203
Code
Description
#120;n
Enable | Disable the DASH formula calculations
#120;0 disables the equation and removes the fields from the output data
strings
#120;1 enables the equation and includes the fields in the output data strings
#121
Read DASH equations activation status: 1 (Enabled) | 0 (Disabled)
5.10 User Calibration
It is possible to include a user calibration in the uvSVX. Please contact Valeport for more
information how this can be achieved.
Code
Description
#225;
Sets the User Calibration coefficients for Pressure
this function is password protected
#226
Read User Pressure Calibration coefficients
#510;n
Enable | Disable the User Calibration
#510;0 disables the User Calibration
#510;1 enables the User Calibration
#511
Read User Calibration activation status