Configuration and Calibration Guide HD0679 Rev 1.2.0 17
2.2.8
Average Moisture %
This is the ‘Raw Moisture %’ variable processed for batch averaging using the averaging
parameters. To obtain an average reading, the digital input must be configured to
‘Average/Hold’. When the digital input is switched high the Raw Moisture readings are
averaged. When the digital input is low the average value is held constant.
2.2.9
Brix
This is the value that may be calibrated to be proportional to the Brix 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
Brix value of the material to be defined.
Note: This output is not available in all sensors. Please see the technical
specification in the relevant installation guide for more details.
2.2.10
Temperature
Temperature scaling on the analogue output is fixed – zero scale (0 or 4mA) corresponds
to 0°C and full scale (20mA) to 100°C
2.3
Low % and High%
These two values set the moisture range when the output variable is set to ‘Filtered Moisture
%’ or ‘Average Moisture %’. The default values are 0% and 20% where:
0 - 20mA
0mA represents 0% and 20mA represents 20%
4 - 20mA
4mA represents 0% and 20mA represents 20%
These limits are set for the working range of the moisture and must be matched to the mA to
moisture conversion in the batch controller.
3 Digital Inputs/Output Setup
3.1
Inputs/Output Options
The sensor has two digital inputs. The second of these can also be configured as an output.
For connection details refer to the Electrical Installation Guide HD0678
The first digital input can be set to the following:
Unused:
The status of the input is ignored
Average/Hold
This is used to control the start and stop period for batch
averaging. When the input signal is activated, and after the delay
period set by the ‘Average/Hold delay’ parameter, the ‘RAW’ or
‘Unscaled’ values (see Averaging Mode section 4.3) start to
average. When the input is then deactivated, averaging is stopped
and the average value is held constant so that it can be read by the
batch controller PLC. When the input signal is activated once
again, the average value is reset and averaging recommences.
Summary of Contents for Hydro-Mix
Page 4: ...4 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
Page 6: ...6 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
Page 8: ...8 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
Page 10: ...10 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
Page 14: ...Chapter 1 Introduction 14 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
Page 28: ...Chapter 2 Configuration 28 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
Page 42: ...Chapter 4 Best Practices 42 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
Page 48: ...Chapter 5 Sensor Diagnostics 48 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
Page 52: ...Appendix A Document Cross Reference 52 Configuration and Calibration Guide HD0679 Rev 1 2 0 ...
