Apogee Instruments MQ-500 - PAR/PPFD meter

Apogee Instruments MQ-500: professional PAR/PPFD meter, suitable for measuring LED lighting, LCD display, external probe, data output to PC possible, made in the USA. The translation of this section is: The MQ-500 meter from the American manufacturing company Apogee Instruments is a handheld light meter with an attached cable that displays and stores the measurement results. The main applications include measuring direct and reflected PPFD above the tops of plants or within the foliage at different heights in outdoor greenhouses or indoor growing areas. Quantum mechanical sensors can also be used to measure PAR/PPFD in the aquarium environment, including corals in saltwater aquariums. The meter has manual and log modes and records the integrated daily amount in mol × m^(-2) × d^(-1). In sample mode, up to 99 measurements are stored. In log mode, the meter turns on and off every 30 minutes to record. Every 30 minutes, the meter averages 60 readings and stores that value in memory. Up to 99 such values ​​can be stored, and once the memory is full, the oldest records are automatically replaced by newer ones. The integrated daily amount is created from 48 average measurements (which corresponds to a 24-hour period). Both manual and logged measurements can be viewed on the LCD screen or downloaded to a computer. However, the integrated daily amount can only be viewed by downloading the data to a computer. This requires the purchase of an AC-100 communications cable (a standard USB cable will not work) and ApogeeAMS software. Application: - Measuring incoming PPFD (photosynthetic photon flux density = amount of PAR a plant receives from light). Unlike traditional lux meters, it can be used to measure LED lighting where PAR and PPFD values ​​play a crucial role! Specifications: - Calibration deviation: ± 5 % - Measuring range: 0 - 4000 µmol × m^(-2) × s^(-1) - Measurement repeatability: < 0.5 % - Long-term accuracy deterioration: < 2% per year - Nonlinearity: < 1 % (up to 4000 µmol × m^(-2) × s^(-1)) - Time response: < 1 ms - Field of view: 180° - Spectral measuring range: 389 - 692 nm ± 5 nm (wavelengths at which the response is greater than 50% of the maximum) - Spectral selectivity: < 10 % from 412 to 682 nm ± 5 nm - Direction (cosine) response: ± 5% at 75° zenith angle - Azimuth error: < 0.5 % - Inclination error: < 0.5 % - Temperature response: -0.11 ± 0.03 % C^(-1) - Measurement uncertainty in the daily total: < 5 % - Probe: improved blue silicon photodiode - Cover: anodized aluminum housing with acrylic diffuser - Completely dust and waterproof (IP68) - Operating environment: 0 - 50 °C (at max. 90% relative humidity up to 30 °C, at 70% relative humidity up to 50 °C); separate sensor can be submerged up to 30 meters deep - Dimensions of the device (L×W×H): 126 × 70 × 24 mm - Sun dimensions: Ø 24 mm, 37 mm length - Weight: 100 g (including 5 m cable) - Cable: 2 m shielded two-wire cable, additional cable available, TPV rubber - Warranty: 4 years against material and processing defects - Made in the USA

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