Specifications

Section 7. Measurement Instructions
Parameter
& Data Type
Enter
MeasPerPort
The MeasPerPort parameter is the number of control ports to be used to control
the CS616 sensor(s). If Reps is set to 4, MeasPerPort = 4 will result in the same
port being used for all measurements. MeasPerPort = 1 will result in four
sequential ports being used for the measurements. MeasPerPort = 2 will result
in one port being used for the first two measurements, and the next port being
used for the next two measurements.
Mult, Offset
The Mult and Offset parameters are each a constant, variable, array, or
expression by which to scale the results of the measurement.
HydraProbe (Dest, SourceVolts, ProbeType, SoilType)
The HydraProbe instruction is used to process the values returned from a
Stevens Vitel Hydra Probe sensor. Four single-ended voltage readings from
the probe must be stored in an array prior to the HydraProbe instruction.
Parameter
& Data Type
Enter
Dest
Array
The variable array that will hold the values returned from the Hydra Probe
sensor. This variable must be dimensioned to 11. The sensor returns the
following measurements: soil type (1 = sand, 2 = silt, 3 = clay), real dielectric
constant, imagined dielectric constant, temperature, real dielectric constant with
temperature correction, imagined dielectric constant with temperature correction,
water content (fraction by volume), salinity (grams of NaCl per liter), soil
conductivity (S/m), soil conductivity with temperature correction (S/m), soil
water conductivity with temperature correction (S/m).
SourceVolts
Array
The variable array that will hold the voltages returned by the sensor (V1, V2,
V3, and V4). This variable must be dimensioned to 4.
ProbeType
A code identifying which version of the Hydra Probe is being measured.
Code Description
0 Standard Probe (5V output for V4)
Constant
1 Probe Type A (2.5 V output for V4)
SoilType
A code to indicate the type of soil
Code Description
1 Sand
Constant
2 Silt
3 Clay
Multiplier
Constant,
Variable or
Expression
Multiplier that will be applied to the returned temperature value.
Offset
Constant,
Variable or
Expression
Offset that will be applied to the returned temperature value.
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