ST-85 luminometer instruction manual

structure

 The instrument is composed of two parts, a photometric probe and a reading unit, which are connected by a plug and a socket through a cable. There is a power switch and a digital hold switch on the reading unit.

operate

When measuring illuminance, first remove the probe cover and place it at the position to be measured, then insert the plug of the probe into the jack of the reading unit, turn on the power switch, and read when the range is automatically selected and stabilized, and the display window The displayed value multiplied by 100 is the illuminance value ( unit: x l ) . If you want to keep the measurement data, you can turn the "Hold" key to the left "·" , after reading the number, you should turn the "Hold" key back to the right . (Note: Before turning on the power and after use, you need to put the "Hold" key on the right, otherwise the instrument will not work properly).

When the symbol "LOBAT" or "←" appears on the upper left of the display window, the internal battery should be replaced.

maintain

Long-term storage of the instrument should be in a clean environment with temperature (0~40°C) and humidity <85%RH, to avoid damage to the instrument caused by strong vibration or beating.

ensure

Within one year of leaving the factory, if the failure is not caused by improper use and maintenance, our factory will repair or replace it free of charge.

For the instruments that need to be re-inspected or repaired after one year, our factory provides preferential services.