The HI8733 is a durable, portable EC meter designed for use in areas of production and quality control. It is supplied with a four-ring conductivity probe to allow for four ranges of measurement. Conductivity readings are adjusted with Automatic Temperature Compensation (ATC), assuring users of consistent and accurate measurements.
Four measuring modes
Automatic Temperature Compensation
The portable HI8633 EC meter is suitable for use in a variety of applications. It offers four measurement ranges from 0.0 µS/cm to 199.9 mS/cm with a ±1% FS accuracy. The HI76301W four-ring conductivity probe that is supplied with the meter allows for a wide range of measurements with a single sensor. The four-ring technology also eliminates the polarization effect that is common with standard two pole versions. The HI8633 offers manual temperature compensation from 0 to 50°C (32 to 122°F) and a fixed β at 2%/°C
Four-ring Probe – The HI76301D four-ring probe that comes with the HI8633 offers a versatile and accurate solution for conductivity 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 comes with a protective PVC sleeve that assures durability when taking measurements outdoors.
Four Measurement Ranges – HI8633 offers four conductivity measurement ranges. Each range has a dedicated button on the face of the meter, allowing users to easily switch between ranges when necessary. The meter is programmed to let the user know when their current reading is out of range, and a new range should then be selected.
Manual Temperature Compensation – Since temperature has such a dramatic effect on conductivity readings, having a meter that offers temperature compensated readings is invaluable. The HI8633 allows users to adjust the temperature of the measurement solution through a knob on the face of the meter. The adjustment accounts for the effects of temperature on a sample’s conductivity reading in the range of 0 to 50°C (32 to 122°F).
Fixed Temperature Coefficient -As the temperature of a solution increases or decreases, the conductance becomes higher or lower, respectively. The temperature compensation coefficient, also known as β, is the factor that adjusts for the temperature of a solution to ensure an accurate reading is achieved. The HI8633 is programmed with a fixed β at 2%/°C; this factor corrects the conductivity reading by 2% for each degree Celsius change in the sample.
The HI8633 can be calibrated at one point in a standard conductivity solution. The calibration knob located on the face of the meter is easily adjusted to the correct calibration standard.
0.0 to 199.9 μS/cm; 0 to 1999 μS/cm; 0.00 to 19.99 mS/cm; 0.0 to 199.9 mS/cm
0.1 μS/cm; 1 μS/cm; 0.01 mS/cm; 0.1 mS/cm
±1% FS (excluding probe error)
manual, one-point through EC knob
manual from 0 to 50°C (32 to 122°F) with β = 2%/°C
HI76301D conductivity probe with internal temperature sensor, DIN connector and 1 m (3.3’) cable (included)
Battery Type / Life
9V / approximately 100 hours of continuous use
0 to 50°C (32 to 122°F); RH max 100%
145 x 80 x 36 mm (5.7 x 3.1 x 1.4’’)
230 g (8.1 oz)
HI8633 is supplied with HI76301D conductivity probe, 12880 μS/cm HI70030 calibration solution sachets (5), battery, instructions and rugged carrying case.