How to detect the intensity of ultraviolet lamp

The ultraviolet sterilization lamp tube in use should be tested once with the ultraviolet irradiance meter within 3 ~ 6 months, and calibrated once with the ultraviolet irradiance meter to maintain accuracy. The lamp tube with unqualified intensity should be replaced in time.

We carry out the test by means of chemical indicator card,

1. After turning on the ultraviolet lamp for 5 minutes, place the chemical card under the ultraviolet lamp at a vertical distance of 1 meter, and the patterned side of the chemical indicator card faces upward;

2. Irradiate the ultraviolet lamp for 1 minute (there will be different color changes on the chemical card);

3. Observe the color block of the indicator card and compare it with the standard color block, and then read out the irradiation intensity.

Take 10W as an example:

1. The new ultraviolet sterilization lamp tube is qualified if its ultraviolet illumination is not less than 30uw / cm;

2. If the UV lamp is in use, it shall be qualified if it is not less than 20uw / cm.