Hanna Instruments HI 8936DN Conductivity Transmitter, 0.0 to 199.9 microsiemens/cm

The Hanna Instruments HI 8936DN conductivity transmitter is designed for use with the HI 7635, HI 7638, or HI 3001 platinum conductivity potentiometric probe and an HI 8931 controller (all sold separately), for constant offsite monitoring of conductivity and temperature. Direct connection to the transmitter to the probe provides a positive electrical connection that eliminates signal loss over long distances. Circuitry in the transmitter and a built-in temperature sensor on the probe provide automatic temperature compensation (ATC). The transmitter has a range of 0 to 199.9 microsiemens/cm, and can be wall-mounted at any convenient location close to the measurement site. The transmitter requires external power to the 4 to 20mA current loop. Protecting the transmitter inside a case is recommended to minimize thermal drifts, particularly for outdoor measurements.

H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Conductivity meters, also known as electrical conductivity (EC) meters, measure the ability of a solution or material to conduct an electrical current. This measurement helps determine if the solution is, for example, contaminated or contains too much saline. In general, pure solutions, such as distilled water, have low conductivity. More saline- or nutrient-rich solutions, such as seawater or fertilizers, have high conductivity. Conductivity measurements are often used with total dissolved solids (TDS) measurements, which are typically expressed in ppm (parts per million). TDS consist of dissolved minerals and salts. To determine the amount of TDS, conductivity is measured, and the result is converted to a TDS measurement. Different meters provide results for conductivity, TDS, or both, and the application determines meter selection. Conductivity meters are used in research laboratories and a variety of industries, such as water-quality testing, waste-water treatment, hydroponics, agriculture, aquaculture, and cosmetics manufacturing.

Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) standard 9001.

What's in the Box?

• HI 8936DN conductivity transmitter
• Instructions