Features at-a-glance
Four-ring Probe – The HI76309 is a stainless steel four-ring probe that offers an accurate solution for EC, TDS, and salinity readings. Four-ring technology allows for a larger range of measurement within a single probe, whereas two probe technology is somewhat limited in the range in which it can measure. The probe features a built-in temperature probe to allow for temperature compensated readings, as well as a protective PVC sleeve that assures durability when taking measurements outdoors.
Three Measurement Modes – HI9835 offers three measurement modes: EC, TDS, and salinity. Users can easily switch between measurement modes with a simple press of the ‘Range’ button. EC measurements range from 0.00 to 500.0 mS/cm (actual EC); TDS measurements range from 0.00 to 400.0 ppt (actual TDS); salinity measurements range from 0.0 to 400.0% NaCl.
Adjustable TDS Factor – The TDS value in aqueous solutions is directly proportional to conductivity. The ratio between the two parameters depends on the solution being measured. The HI9835 has an adjustable TDS factor from 0.40 to 0.80, allowing users to choose the conversion factor that is the most appropriate for their particular solution.
Automatic Temperature Compensation – Since temperature has such a dramatic effect on conductivity (and thus TDS and salinity readings), having a meter that offers temperature compensated readings is invaluable. The probe of the HI9835 features a built-in temperature sensor that automatically accounts for the effects of temperature in the range of -20.0 to 120.0°C (-4.0 to 248.0°F). Users also have the option to select manual temperature compensation or disable it for actual EC and TDS measurements.