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Chapter 5
2.7
Configuration Page
Analogue Output Frame
The working range of the current loop output can be configured to suit the equipment to which
it is connected. This analogue output is normally configured to be proportional to the
percentage moisture reading. However it is possible to make the analogue output represent
other types of output variables which are selectable from the analogue output frame.
2.7.1
2.7.2
Output Type:
0-20mA
This is the factory default. The addition of an external 500R
precision resistor converts to 0 – 10 V
4-20mA
This is a standard 4 – 20 mA output.
Compatibility
This mode produces an analogue current with an inverted
exponential characteristic that is compatible with earlier
analogue versions of the Hydronix moisture sensors (HydroProbe and Hydro-Mix IV). A 500 R precision resistor is required
to convert to voltage. This configuration must ONLY be used
with a Hydro-Control IV or a Hydro-View.
Output Variable 1:
Filtered Moisture %:
This is scaled from the 'Filtered Unscaled' variable using the A,
B, C and SSD coefficients.
See Appendix B for more
information.
Average Moisture %:
This is scaled from the 'Average Unscaled' variable using the A,
B, C and SSD coefficients.
See Appendix B for more
information.
Filtered Unscaled:
This is the 'Raw Unscaled' variable which has been processed
using the filtering parameters in the 'Signal Processing’ frame.
See Appendix B for more information. Newer model sensors
may have a second ‘Filtered Unscaled 2’ which can be set to use
a different measurement mode.
Average Unscaled:
This is the 'Filtered Unscaled' variable processed for batch
averaging using the parameters in the 'Averaging’ frame. See
Appendix B for more information.
Brix:
(Applies to Hydro-Probe SE sensors only). This is scaled from
the 'Filtered Unscaled' variable using the A, B, C and D Brix
coefficients. See Appendix B for more information.
Material Temperature:
(Applies to certain sensors only). The temperature scaling is
fixed - zero scale (0 or 4mA) corresponds to 0ºC, full scale
(20mA) to 100ºC. See Appendix B for more information.
Hydro-Com User Guide HD0273 Rev.1.5.0
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