parameters

Usage

>> parameters [ altitude | atmosphere | avgsoundspeed | density | pressure | salinity | speccondtempco | temperature ]

Security

Unsafe.

Description

Reports or sets channel parameters which may be required when computing calibrated output in the logger as described below.

• altitude [=<value>] is the height above the seabed in metres at which the logger is deployed. This is a user-entered parameter which is required by host software to calculate statistics and parameters for wave analysis: it is not used internally by the instrument, and if wave analysis is not required, the parameter can be ignored.

• speccondtempco [=<value>] is the temperature coefficient used to correct the derived channel for specific conductivity to 25°C. Its value depends on the ionic composition of the water being monitored, and should be set to an appropriate value for best results. A typical range of values is 0.0191 to 0.0214, with the lower end suitable for KCl solutions and the upper end for NaCl solutions. When specifying a value, any simple numeric format compatible with floating point representation may be used; for example 0.02, 0.0200 or 2e-2 would all be accepted.  If the parameter is never explicitly set, the default value is 0.0191, suitable for standard KCl solution.

•  atmosphere, avgsoundspeed, density, pressure, salinity, temperature [=<value>]: these are default parameter values, to be used when the instrument does not have a channel which measures the named parameter, but one or more cross-channel calibration equations requires it as an input.
  When specifying a value, any simple numeric format compatible with floating point representation may be used; for example 11, 11.000 or 1.10e+1 would all be accepted.  The units of these parameter values are implicit, and must be as shown below. If these parameter values are never explicitly set, they will have default values based on standard sea water (salinity = 35PSU, temperature = 15°C, hydrostatic pressure = 0 dbar), and one standard atmosphere for atmospheric pressure. 

Examples

>> parameters atmosphere
<< parameters atmosphere=10.132501

Request only the atmosphere parameter

>> parameters density=1.0295
<< parameters density=1.0295

Update the density parameter

>> parameters
<< parameters altitude=0.0000 atmosphere=10.1325010 avgsoundspeed=1506.8000 density=1.0260206 pressure=10.1325010 salinity=35.0000 speccondtempco=0.0191 temperature=15.0000

Request all parameters