Reverse reflection marker measuring instrument (indoor and outdoor multi angle)

1. This instrument is an optical measuring device that combines optics, mechanics, and electronics, and should be moisture-proof. Especially when used for outdoor or field measurements in winter, it should be noted that the temperature of the environment where the instrument is located should not suddenly change: if the outdoor temperature is below -10 ℃, if the instrument is moved from outdoors to indoors with a temperature of around 20 ℃, it may fog and be damaged. Therefore, it is necessary to place the instrument together with the packaging box at room temperature of 20 ℃ for at least 24 hours before removing the instrument.
2. During transportation and use, the instrument should be shock resistant to prevent damage or inaccurate measurement.
3. The set of calibration blocks attached to the instrument should be properly stored, and their surfaces should not be damaged or covered with dust, fingerprints, etc., to ensure the accuracy of the calibration values.
4. The fasteners of the instrument must not be loosened or disassembled at will to prevent damage to the instrument or inaccurate measurement values.
5. When the instrument is not in use for a long time, it should be charged every three months. Otherwise, the battery will be damaged.

1. Observation angle (α): continuously adjustable within the range of 0.1 ° to 2.0 °, with a reading accuracy of 0.002 °;
2. Incident angle (β): continuously adjustable within the range of -40 ° to+40 °, with a reading scale of 1 °;
3. Color temperature of light source: 2856K (i.e. standard A light source);
4. Detector: Silicon diode, after being corrected by a filter, meets the requirement of CIE standard photometric observer spectral luminous efficiency V (λ);
5. Detector aperture to sample angle: 12 ';
6. Measurement range of reflectance coefficient: 0-1999 cd · lx-1 · m-2 (divided into three levels: × 1, × 10, and × 100);
7. Display: Three and a half digit digital display;
8. DC power supply: Input AC voltage 220V, 50Hz; The output DC voltage is continuously adjustable within the range of approximately 1-6V, with an accuracy of ± 0.02V.

1. After purchasing our company's products, please fill out the "Product Warranty Card" carefully and send back the "Product Warranty Card" stamped with the user's company seal and a copy of the purchase instrument invoice or contract to our customer service center. You can also entrust the sales unit to send it on your behalf. When the procedures are incomplete, only repairs can be made without warranty.
2. Our company's products have quality failures (excluding non warranty parts) within one year from the date of purchase. Please provide the "Product Warranty Card" or purchase invoice, copy of the contract, and our after-sales service department for free repair. During the warranty period, if the warranty card, purchase invoice, or copy of the contract cannot be presented, our company will calculate the warranty period based on the date of manufacture, which is one year.
3. If our company's products malfunction beyond the warranty period, they can be handed over to our instrument service after-sales department for repair, and repair fees will be charged according to company regulations.
4. Any product damage caused by the user's own disassembly and assembly of our company's products, improper transportation, storage, or failure to operate correctly according to the product manual, as well as unauthorized alteration of the warranty card without a purchase voucher, will not be covered by our company's warranty.
5. Please use it correctly according to the instructions. If any abnormalities are found, please stop using it and contact our company.