Photometer Expert-003 Set No. 3 Standard
Photometer Expert-003 (Standard). The photometer is designed to measure the optical density and spectral coefficient of directional transmittance of solutions and optically transparent solids, as well as to determine the concentrations of substances in a solution after preliminary calibration of the photometer. Scope of application: chemical-technological, agrochemical, environmental and analytical laboratories of industrial enterprises, research institutions, field laboratories, control, inspection and supervision bodies. Photometers can be used in industrial, laboratory and field conditions for the analysis of aqueous and non-aqueous solutions, soils, food and other objects. The light source is a replaceable LED (replaceable cartridge), the light receiver is a photodiode, and for long wavelengths, a photoresistor. The operation of the photometer is based on the conversion of light radiation using a recording photodetector into electrical signals and then into a digital code. Mathematical conversions and other functions are performed by a microprocessor, which is the main component of the photometer's electronic circuitry. Features: measurement of optical density and spectral coefficient of directional transmittance; determination of the concentration of a substance or other parameter of the solution composition after calibration; calibration with the ability to store in memory the results of 20 calibrations for 15 standard solutions each (including entering and storing in memory the concentration values of standard solutions, as well as measuring and storing in memory the optical density of standard solutions); automatic calculation of the calibration graph equation using the least squares method; exclusion of one or more calibration points from the calculation of the calibration graph equation at the operator’s command; automatic calculation of the linear correlation coefficient (reliability of approximation) of the calibration graph; constant monitoring of the degree of battery discharge with the corresponding symbol displayed on the display; dialogue with the operator: display of commands, requests and information about operator errors; output to computer (RS-232). Scope of delivery: measuring transducer photometer Expert-003 “Standard”; photo-cell FYA-1; calibration of the Ozone photometer; ST-PHOTO “Ozone” set for 100 measurements; cartridge - 1 pc. (wavelength 525 nm); adapter P1; photometric cuvette - 1 pc. (20×24 mm); case; power unit; documentation (Operation Manual and Verification Methodology). Manba: https://www.nv-lab.ru/catalog_info.php?ID=6234
- Feature: Parameter
- Overall dimensions of the measuring transducer, mm: 195×105×70
- Transmitter weight: 0.7
- Battery/mains power supply: yes
- Connection to PC COM port: yes
- Connection to PC USB port: yes, requires COM-USB adapter
- Power, no more, VA: 6
- Time to establish the operating mode (preheating) no more than, min: 5
- Housing version: portable
- Calibration with the ability to store results in memory, including entering and storing concentration values of standard solutions, as well as measuring and storing optical density values of standard solutions: 20 calibrations of 15 standard solutions each
- Wavelength range, nm: 375-940
- Radiation sources - LEDs with operating wavelengths, nm: (375±15); (400±15); (430±15); (470±15; (505±15); (525±15); (572±15); (590±15); (605±15); (615±15); (626±15); (655±15); (700±15); (850±15); (880±15); (940±15)
- Optical density measurement range, B: 0-1.5
- Range of optical density readings, B: 0-3
- Limits of permissible systematic component of error when measuring optical density, B: ± 0.02
- Limit of permissible random component of error when measuring optical density, B: 0.005
- Time to establish a stable photometer reading when measuring optical density, sec., no more than: 15
- Working length of cuvettes, mm: 1-50
- Indicator: Graphic LCD with backlight