Photometer Expert-003 Standard (basic set)
Photometer Expert-003 Standard (basic set). Compact colorimeter for measuring over 100 quality parameters of drinking, natural, waste water, food samples, soils, etc. according to GOST, RD, ISO, MVI, PND F, work with test systems. Allows you to measure optical density and spectral coefficient of directional transmittance and determine the concentration of substances or other parameters of the solution composition after calibration. 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. Microprocessor control system for the device with LCD screen. Calibration is provided with the ability to store in memory the results of 20 calibrations of 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 values of standard solutions). Determination of the concentrations of substances and other quality parameters of solutions (for example, total parameters) is carried out using the calibration graph method, which is constructed by a microprocessor automatically using the least squares method based on the concentration values of standard solutions entered into the photometer memory and the corresponding measured values of optical density. Features: 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; display of commands, requests and information about operator errors; output to computer (RS-232). Manba: https://www.nv-lab.ru/catalog_info.php?ID=6608
- Feature: Parameter
- Overall dimensions of the measuring transducer, mm: 195×105×70
- Transmitter weight: 0.7
- Battery/mains power supply: yes
- Magnetic stirrer connection: yes
- Connection to PC COM port: yes
- Connection to a PC USB port Connection of a thermal printer: yes, requires a COM-USB adapter
- Power, no more, VA: 6
- Time to establish the operating mode (preheating) no more than, min: 5
- Housing version: portable
- Measurement of optical density and spectral coefficient of directional transmittance: yes
- Determination of the concentration of a substance or other parameter of the solution composition after calibration: yes
- 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
- Automatic calculation of the calibration graph equation using the least squares method: yes
- Exclusion of one or more calibration points from the calculation of the calibration graph equation at the operator’s command: yes
- Automatic calculation of the linear correlation coefficient (reliability of approximation) of the calibration graph: yes
- Constant monitoring of the battery discharge level with the corresponding symbol displayed on the display: yes
- Dialogue with the operator: display of commands, requests and information about operator errors: yes
- 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
- Entering and saving comments to them (maintaining an electronic notepad): no
- Entering from the keyboard and storing in the device memory the names of calibration graphs and comments in the form of text consisting of letters of the Russian and English alphabet, numbers and symbols: no