Turbidity is a measurement of the cloudiness or haze of the water. Swimming pool, hot tub, and spa water can have varying degrees of cloudiness from the indiscernible to very noticeable when the bottom of a pool cannot be seen. The cloudiness or haze can be a symptom of a variety of problems from biological forms including algae and bacteria to precipitates such as calcium carbonate that will appear at elevated pH levels. Back flushing, filter cartridge replacement, adding flocculants, or a simple pH adjustment can sometimes resolve the increase in water turbidity. The remedy is determined by the cause of the increase in turbidity. The turbidity of a swimming pool, hot tub, or spa should be kept low at a value of 0.5 FNU/NTU or less.
The HI987134 Pool Line Precision ISO Turbidity Portable Meter is specially designed for water quality measurements, providing reliable and accurate readings, even within low turbidity ranges. The instrument is based on a state-of-the-art optical system which guarantees accurate results, assures long term stability, and minimizes stray light and color interferences. Periodic calibration with the supplied standards compensates for any variations in intensity of the LED light source. The 25 mm round cuvettes composed of special optical glass guarantee the repeatability of turbidity measurements.
Ratio Measurement Mode – The HI987134 measures turbidity using the ratio method with a 90° and 180° light detector for more accurate measurements. Turbidity measurements can be made in the 0.00 to 1000 FNU range.
Multiple reading modes – Normal measurement, continuous measurement, or signal averaging measurement are reading modes available.
ISO Compliant – The HI987134 meets and exceeds the requirements of ISO 7027 method for turbidity measurements by use of an infrared LED light source.
Calibration – The HI987134 has a powerful calibration function that compensates for variation in light intensity. The calibration can be done using the supplied calibration solutions or user-prepared standards. A two, three, or four-point turbidity calibration can be performed by using the supplied (<0.1, 15, 100, and 750 FNU) standards. Calibration points can be modified if user-prepared standards are used.
AMCO AEPA-1 Primary Turbidity Standard – The AMCO AEPA-1 supplied standards are recognized as a primary standard by the USEPA. These non-toxic standards are made of styrene divinylbenzene polymer spheres that are uniform in size and density. The standards are reusable and stable with a long shelf life.
Fast Tracker™ – For advanced field applications, the HI987134 is equipped with Fast Tracker™ – Tag Identification System (T.I.S.) that makes data collecting and management simpler than ever. Fast Tracker™ allows users to record the time and location of a specific measurement or series of measurements using iButton® tags near sampling points for quick and easy readings. Each iButton® tag contains a computer chip with a unique identification code encased in stainless steel.
GLP Data – The HI987134 features complete GLP (Good Laboratory Practice) functions that allow traceability of the calibration conditions. Data includes calibration points, date, and time.
Data Logging – Up to 200 measurements can be stored in the internal memory and recalled at any time.
Data Transfer – For further storage or analysis options, logged data can be downloaded to a Windows® compatible PC using the USB or RS232 port and the HI92000 software.
Backlit Graphic LCD Display – A graphic LCD display provides an easy to understand, user-friendly interface. All messages are in plain text making them easy to read.