HI8733 Multi-range EC Meter

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-ring probe
  • Four measuring modes
  • Automatic Temperature Compensation


The portable Multi-range EC Meter – HI8733 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 HI76302W 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 probe also features a built-in temperature sensor to allow for Automatic Temperature Compensation from 0 to 50°C (32 to 122°F) and an adjustable ? from 0 to 2.5%/°C.

Features at-a-glance

Four-ring Probe – The four-ring probe that comes with the HI8733 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 – HI8733 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.

Automatic Temperature Compensation – Since temperature has such a dramatic effect on conductivity readings, having a meter that offers temperature compensated readings is invaluable. The probe of the HI8733 features a built-in temperature sensor that automatically accounts for the effects of temperature on a sample’s conductivity reading in the range of 0 to 50°C (32 to 122°F).

Adjustable 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 ?, is the factor that adjusts for the temperature of a solution to ensure an accurate reading is achieved. The HI8733 allows for an adjustable ? to be set from 0 to 2.5%/°C; this factor corrects the conductivity reading by the set percentage for each degree Celsius change in the sample.

One-point Calibration –  The HI8733 can be calibrated at one point in a standard conductivity solution. The calibration knob located on the top of the meter is easily adjusted to the correct calibration standard.