▼Measurement indicators
Moisture content (%), quantitative (g/m2), film thickness (μm), coating material coating amount (g/m2), organic component content measurement (%).
▼Application areas
Paper, film, various coated adhesive tapes, film functional coatings, organic sheets.
▼Main components
The multi-wavelength infrared component sensor consists of two parts: the transmitter and the receiver.
The transmitter head mainly includes: transmitter head box, halogen light source, light source adjustment circuit board, light guide tube, convex lens and other components.
The receiving head mainly includes: a receiving head box, multi-channel branched flexible light-guiding optical fibers, filters, infrared detectors, signal amplifier circuit boards, communication circuit boards, etc.
▼Measurement principle
Material components have a strong absorption capacity for infrared energy at specific wavelengths, but do not absorb infrared energy at other wavelengths. Select a wavelength that is easily absorbed by the material component as the measurement wavelength, and a wavelength that is not easily absorbed by the material as the reference wavelength. The ratio of the measurement wavelength after receiving infrared light passing through the measured object to the reference wavelength is used to establish a mathematical model with the actual content of the measured object, which can characterize the component content of the measured substance. For detection objects with different contents, configure filters with corresponding characteristic wavelengths to achieve accurate measurement of each component.
▼Technical features
◆ Soft start of light source, current stabilization and protection circuit of pulse width modulation, stable, energy-saving and durable;
◆ The measurement gap has multiple reflection and transmission structures, which results in higher detection sensitivity;
◆ Multiple detectors detect at the same viewpoint at the same time, and the signal ratio has no parallax time difference, which is suitable for fast scanning;
◆ It can measure the contents of 4 components at the same time to improve the accuracy of comprehensive indicators;
◆ No rotating parts such as chopping discs, more reliable operation, multiple optical paths for continuous measurement instead of alternating measurement;
◆ The infrared detector uses photovoltaic devices, no dark current, better thermal stability and linearity;
◆ Light intensity signal output mode 4~20mA or 0~10V optional, probe temperature signal current output;
◆ Near infrared band measurement, fully shielding the influence of ambient light sources;
◆ Sufficient pre-calibration samples and data, mathematical graphics software fitting, function curve is closer to the true measurement;
◆ Constant temperature heated blowing plate option, controlled air gap temperature to prevent condensation on the window.
▼Performance indicators
