The Hanna Instruments HI 8936CLN conductivity transmitter with LCD screen 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. An LCD screen displays measurement values for ease of calibration, process monitoring, and verification. Direct connection of 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 1,999 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.
|Conductivity (EC) range||0 to 1999μS/cm|
|Accuracy range at 20 degrees C/68 degrees F||+ or - 2% of full scale (excluding probe error)|
|Calibration||Manual, 2 point, with offset and slope trimmers|
|Conductivity probe||HI 7635 for in-line applications (not included)|
|Recorder output||4 to 20mA, not isolated, max 500 ohm|
|Temperature compensation||Fixed or automatic, 0 to 50 degrees C (32 to 122 degrees F) with Β=2%/degrees C|
|Protection rating||IP 65|
|Environment||0 to 50 degrees C/32 to 122 degrees F|
|Dimensions||165 x 110 x 71mm/6.5 x 4.3 x 2.8 inches (H x W x D)|
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 8936CLN conductivity transmitter