Hydronix HV04, User Manual

Page: 53 / 93

Chapter 5 System Navigation
Hydro-View User Guide HD0531 Rev 2.0.0 53
Hydronix sensors include temperature compensation algorithms to provide a consistent
reading over a wide temperature range. These coefficients are used to carry out the
calculations and are set in the factory, individually to each sensor. These should not
normally be changed.
6.6.3 Calibration
Figure 38: Calibration Screen
A, B, C, D
The current A, B, C and D coefficients used in the material calibration. These may be
edited on this screen, but it is advisable to use the built in Calibration functions to ensure
an accurate material calibration is achieved. For a Moisture sensor, the Material calibration
formula is:
Moisture = A x Unscaled
2
+ B x Un C - D
The D coefficient is the Water Absorption Value (WAV) or Surface Saturated Dry (SSD)
property of the material, available from the material supplier.
For a sensor capable of being calibrated to a measurement of Brix instead of moisture, the
Brix calibration formula is:
𝐵𝐵𝐵𝐵 = 𝐴 − 𝐵 . 𝑒
(
𝐶 . 𝑢𝑢
100000
)
+
𝐷 . 𝑢𝑢
2
1000
Mode
The mode selector enables the user to view the current coefficients for each Measurement
Mode stored in the sensor. This is only available with compatible sensors.
Calibration
Accesses the Calibration Screen – the recommended method of adjusting the Calibration
coefficients.
6.7
Sensor Status
6.7.1 Temperature
Figure 39: Temperature Screen