Digital Inputs/Output Setup - Hydronix Hydro-Probe Configuration And Calibration Manual

Configuration
2.2.8 Average Moisture %
This is the 'Raw Moisture %' variable processed for batch averaging using the averaging
parameters.
'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
Low % and High%
2.3
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
4 - 20mA
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

Inputs/Output Options
3.1
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:
Average/Hold
To obtain an average reading, the digital input must be configured to
0mA represents 0% and 20mA represents 20%
4mA represents 0% and 20mA represents 20%
The status of the input is ignored
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.
again, the average value is reset and averaging recommences.
When the input signal is activated once
Configuration and Calibration Guide HD0679 Rev 1.2.0 17
Chapter 2