1. Measuring Equipment
1.1 The Sensor-unit
The Sensor-unit is the heart of the Hydrion10 and consists of a watertight, stainless steel tube containing ion-selective
sensors, a small motor and pre-amplifiers plus data conversion. A serial cable handles all communication between the
Sensor-Unit and the PC. There is a plug-in connector for the USB port of the PC that converts the serial signals from the
Sensor-Unit to USB signals for the PC.
The standard Sensor-unit is capable of measuring: temperature, EC, pH, potassium, sodium, calcium, ammonium,
chloride, nitrate and carbon dioxide.
Optionally, one extra sensor could be added to measure for instance: redox potential, dissolved oxygen, fluoride, bromide
or lithium, etc. If one or more of the standard ions are not being measured because they are either in very low
concentration or altogether absent from the solution, then these sensors are not necessary.
Communication cable
from Sensor-Unit to PC
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