User manual HANNA INSTRUMENTS HI 97500

[. . . ] Instruction Manual HI 97500 Portable Luxmeter Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct operation of the meter. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. [. . . ] When shipping any instrument, make sure it is properly packaged for complete protection. GENERAL DESCRIPTION HI 97500 Hanna portable luxmeter has been designed for simplicity of use in taking rapid light measurements. The meter is provided with a light sensor connected by a flexible coaxial cable, which allows remote, stable and optimum position light measurements, without any interference of the operator. It is possible to choose among three measure ranges, simply acting on the RANGE key. The HI 97500 luxmeter is housed in a rugged waterproof case for outdoor measurements without any problem. 1) Liquid Crystal Display (LCD) 2) ON/OFF key 3) RANGE key, to select the measurement scale All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc. , Woonsocket, Rhode Island, 02895 , USA. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. SPECIFICATIONS Range Resolution 0. 001 to 1. 999 Klux 0. 01 to 19. 99 Klux 0. 1 to 199. 9 Klux 0. 001 Klux 0. 01 Klux 0. 1 Klux ±6% of reading ±2 digits Factory calibrated Human-eyes-response silicon photodiode with 1. 5m coaxial cable (fixed) 1 x 9V alkaline 200 hours of continuous use after 7 minutes of nonuse 0 to 50°C (32 to 122°F); 100% RH 164 x 76 x 45 mm (6. 5 x 3. 0 x 1. 8") OPERATIONAL GUIDE · The meter is supplied complete with a 9V battery. Remove the battery compartment cover on the back of the meter and install the battery while paying attention to its polarity. · Put the light sensor on a stable surface and the meter at a proper distance to avoid any interference or disturb to the illumination of the sensor. · Press the RANGE key to select the proper scale according to the intensity of the light. " on the LCD indicates that it is necessary to change the measure scale. The decimal point moves through the display and finally the correct value is shown. Note: it is recommended to check if the sensor is clean before taking any measurement. LIGHT MEASUREMENT Illuminance is measured by Luxmeters in lux scale, which can achieve up to 200 Klux for reliable outdoor readings. For accurate measurements the photosensor has to be cosine and color corrected. The cosine correction allows for the effects of light falling on the cell at oblique angles, while color correction is necessary to match the spectral sensitivity of the human eye, and it is defined by the CIE V ("V-lambda") curve. The color correction filters usually limit the sensitivity to UV (ultraviolet) and IR (infrared) radiations. [. . . ] Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. To avoid electrical shock, do not use this instrument when the voltage at the measurement surface exceeds 24VAC or 60VDC. To avoid damages or burns, do not perform any measurement in microwave ovens. ISTR97500R1 09/02 [. . . ]