Hydro-Probe XT User Guide HD0538 Rev: 1.6.0 35
Chapter 4
Configuration
1 Configuring the Sensor
The Hydro-Probe XT has a number of internal parameters which may be used to optimise the
sensor for a given application. These settings are available to view and change using the Hydro-
Com software. Information for all settings can be found in the Hydro-Com User Guide (HD0682).
Both the Hydro-Com software and the User Guide can be downloaded free of charge from
www.hydronix.com.
All Hydronix sensors operate in the same way and use the same configuration parameters. The
parameter used will depend on the application. For example, averaging parameters are typically
only used for batch processes.
2 Analogue output setup
The working range of the two current loop outputs can be configured to suit the equipment to
which it is connected, for example a PLC may require 4 – 20 mA or 0 – 10V DC input signal.
The outputs may also be configured to represent different readings generated by the sensor
e.g. moisture or temperature.
2.1
Output type
This defines the type of analogue outputs and has three options:
0 – 20mA:
This is the factory default. The addition of an external 500 Ohm
precision resistor converts to 0 – 10V DC.
4 – 20mA.
Compatibility:
For use with the Hydro-View II unit.
2.2
Output variable 1 and 2
These define which sensor readings the analogue output will represent and has 4 options.
NOTE: This parameter is not used if the output type is set to ‘Compatibility’
2.2.1
Filtered Unscaled
This represents a value which is proportional to moisture and ranges from 0 – 100. An
Unscaled value of 0 is the reading in air and 100 would relate to a reading in water.
2.2.2
Average Unscaled
The Raw Unscaled variable processed for batch averaging using the averaging
parameters. If averaging is required it is recommended to use the averaging functionality
within the sensor. To obtain an average reading, the digital input must be configured to
‘Average/Hold’. When this digital input is switched to high, the raw Unscaled readings are
averaged. When the digital input is low, this average value is held constant.
2.2.3
Filtered Moisture %
It is possible for the sensor to output a value that is proportional to the moisture content of
a material. In such cases the sensor will require calibrating to the given material. The
calibration requires the relationship between the Unscaled readings of the sensor and the
associated moisture percentage of the material to be defined (see Chapter 5).
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Страница 52: ...Chapter 6 Optimising Sensor and Process Performance 52 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
Страница 58: ...Chapter 7 Sensor diagnostics 58 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
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Страница 66: ...Appendix B Document Cross Reference 66 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
