Description
The HI97702 is an advanced portable photometer for measuring high levels of copper in water. This meter offers a superior optical system that uses a reference detector and narrowband interference filters for extremely fast and repeatable measurements.
Because of its malleability, thermal and electrical conductivity, and corrosion resistance, copper is used in a variety of industrial and technological applications. Copper may also be present in natural waters and effluents due to widespread use to control biological growths in reservoirs and distribution pipes. The HI96702 uses an adaptation of the USEPA approved bi-inconinate method to measure copper concentrations of less than 5.00 mg/L (ppm). When the reagent is added to copper-containing samples, the sample turns purple; The higher the concentration, the deeper the color. The associated color change is analyzed colorimetrically according to Lambert-Beer’s Law. This principle states that light is absorbed by a complementary color and the radiation emitted depends on the concentration. For higher copper levels, a narrowband interference filter at 575 nm (yellow-green) allows only yellow-green light to be emitted and passed through the sample cuvette. As the color change of the reacted sample increases, so does the absorbance of the specific wavelength of light, while the transmittance decreases.
This innovative optical system offers superior performance in accuracy, repeatability and time required to make a measurement. This compact, waterproof meter has a tutorial mode that guides the user graphically, step-by-step, to perform a measurement. The compact design fits comfortably in the hand for use in the field or on a bench for use in a laboratory.
Specs:
-Copper Range: 0.00 to 5.00 mg/L (as Cu)
-Copper Resolution: 0.01 mg/L
-Copper Accuracy: ±0.02 mg/L ±4 of the reading at 25°C
-Copper Method: adaptation of the EPA Method
-Light Source Photometer/Colorimeter: LED with 575 nm bandpass filter
-Light Detector Photometer/Colorimeter: silicon photocell
-Filter Bandwidth: 8 nm
-Accuracy Wavelength Band Filter: ±1.0 nm
-Type of Bucket: 24.6 mm diameter round (22 mm inside)
-LPG: yes
-Display: 128 x 64 pixel B/W LCD with backlight
-Log Memory: 50 readings
-Battery Type/Duration: 1.5V AA alkaline (3 pcs.) /> 800 measurements (without backlight)
-Auto Power Off: after 15 minutes of inactivity (30 minutes before a READ measurement)
-Ambient: 0 to 50°C (32 to 122°F); HR 0 to 100% (IP67)
-Weight: 380g (13.4 oz.)
-Dimensions: 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0″)
