Halytech
hydroSpider2 User’s Manual v1.23
Page 78
These 16 channels can be made up of any combination of up to 2 native inputs, 4 system inputs
(Battery Voltage, Charger Voltage, System Temperature and Moisture Detector) and up to 16
intelligent SDI-12 / RS-485, as required.
SDI-12 and Modbus channels will query the sensors each logging period and log the values to the log
file. Intelligent Sensors may be calibrated in a similar way to Analogue channels, and may be setup
with “Minimum change required to log”.
The hydroSpider will automatically determine the ‘warm-up’ times for SDI-12 sensors and will adjust
its reading of the sensors to synchronize with the logging period. For instance, if a sensor is
connected which takes 5 seconds to warm-up, the hydroSpider will ask this sensor to warm up 5
seconds before logging is due to occur so that it may log as close to the logging time as possible.
With multiple sensors it may not be possible to synchronize all logs with the logging period; however
they should be within several seconds.
Appendix A5.
SDI-12 / Modbus-485 Options
The advanced options for the intelligent interface channels (SDI-12 / Modbus hydroSpiders only) can
be seen below. (SDI-12 left, Modbus-485 right).
Refer to the sensor manufacturer’s specifications in order to determine which settings to apply.
You may also test a sensor configuration from within the Change Input Setup page. Click on the
examine icon (the “magnifying glass”) to initiate a sensor read to ensure the channel is configured
correctly before leaving the page.
