! Lux meter 085691398333 Light Measurement / Alat Pengukur Cahaya Dalam air. Hub Mia 0856 9139 8333./ 021-40911748. Email pdkaryaagungindonesia@ yahoo.com

Light Measurement / Alat Pengukur Cahaya Dalam air Applications : Like all LI-COR instruments, the LI-250A is designed for applications demanding performance, reliability and ruggedness. The LI-250A provides direct digital readout of LI-COR radiation sensors. Photosynthetically Active Radiation ( PAR) The LI-190SA Quantum Sensor is used by plant scientists, horticulturists, and other environmental scientists to measure Photosynthetic Photon Flux Density ( PPFD - the preferred measurement of PAR) in natural sunlight, under plant canopies, and in growth chambers and greenhouses. The LI-190SA is also used in oceanography, limnology and marine sciences as a reference sensor for comparison to underwater PPFD measured by the LI-192SA Underwater Quantum Sensor. The LI-250A can hold calibration multipliers in memory for both a surface and underwater sensor. Illuminance For lighting studies or architectural modeling, the LI-250A and LI-210SA Photometric Sensor provide a direct readout of illuminance in lux. The LI-210SA measures visible radiation and has a spectral response curve equal to that for the average human eye. This curve is known as the CIE Standard Observer Curve and is matched by the LI-210SA to within 5% under most light sources. Solar Irradiance Solar irradiance measurements for meteorological, hydrological and environmental research can be made using the LI-200SA Pyranometer Sensor. The LI-200SA measures global solar radiation ( sun plus sky) and provides a typical accuracy of ± 5% under unobstructed daylight conditions. Sensor Compatibility Type " SA" sensors ( e.g. LI-190SA) are recommended for use with the LI-250A. Older type " SB" sensors ( e.g. LI-190SB) can also be used by removing the calibration connector. Other types of older LI-COR sensors can be made compatible by adding a BNC connector to the cable. Specification : Accuracy: 25 ° C: Typically ± 0.4% of reading ± 3 counts on the least significant digit displayed ( all ranges) . 0 - 55 ° C: Typically ± 0.6% of reading ± 3 counts on the least significant digit displayed ( all ranges) . Range Selection: Autoranging ( 3 ranges) . Linearity: ± 0.05% . Sensors: Any LI-COR type " SA" or type " SB” sensor with BNC connector; Quantum, Pyranometer, or Photometric. Older LI-COR radiation sensors, or those without any connector must have a BNC connector installed. Contact LI-COR. Sensor Calibration: Each sensor is supplied with a calibration multiplier. Calibration multipliers for two sensors can be stored in memory. Calibration multipliers are entered from the keypad. Signal Averaging: Sensor output can be collected and displayed as a 15-second average ( approximately 60 readings) . Averages are retained on the display in HOLD mode. Display: 4 1/ 2 digit LCD display. Updated every 0.5 seconds in Instantaneous mode. Keypad: Sealed, 5-key tactile response keypad. Battery Life: 150 hours typical with continuous operation. Power Requirement: One 9V Eveready Alkaline # 522 or equivalent ( LI-COR part number 216) . Low Battery Detection: Low battery indicator displayed with approximately 20 hours battery life remaining. Operating Conditions: 0 to 55 ° C, 0 to 95% RH ( non-condensing) . Storage Conditions: -55 to 60 ° C, 0 to 95% RH ( non-condensing) . Size: 14 cm L × 7.7 cm W × 3.8 cm D ( 5.5" × 3" × 1.5" ) . Weight: 0.26 kg ( 0.57 lbs) . Warranty: 1 year parts and labor. Hub Mia 0856 9139 8333./ 021-40911748. Email : pdkaryaagungindonesia@ yahoo.com