The Definition of Professional Lights of Hydrargyrum Medium-arc Iodide Lamp
Hydrargyrum medium-arc iodide lamp (HMI) is a medium-arc length mercury halide gas discharge lamp with multi-line spectral emission. The "H" in HMI stands for hydrargyrum and the Latin for mercury. HMI lamps use mercury vapor mixed with metal halide in a quartz glass housing and have two tungsten-coated electrodes with medium arc intervals.
Unlike traditional lighting fixtures that use tungsten bulbs, the hydrargyrum medium arc iodide lamp uses an electronic ballast to adjust the cap and supply power to the cap via a mains cable. Instead of heating a tungsten-based filament, the lamp works by creating an electric arc between two electrodes inside the bulb that excites pressurized mercury vapor and provides high light output. It is more efficient than incandescent-based lighting units. The efficiency advantage is nearly four times, about 85-108 lumens per watt of electric energy. Unlike tungsten bulbs, where the gas in tungsten bulbs is inert and used only for filling and recirculation. HMI lamp bulbs rely heavily on mercury vapor for light output, as well as other metal halides mixed with mercury, resulting in spectral peaks at output wavelengths of about 5600K, close to the color temperature of midday sunlight.
The Maintenance Method of Professional Lights of Hydrargyrum Medium-arc Iodide Lamp
1. Always use proper grounding equipment to ground lamps and electronic ballast
2. Check the bracket and electronic ballast, and measure the voltage between brackets and the ground to prevent leakage.
3. Keep the electronic ballast dry. When the floor is wet, place it on a box or rubber mat.
4. Avoid the lamp stick ash or leave fingerprints. Putty on the skin reduces the quality of the glass and can make a point ineffective, and many tubes come with a special cleaning cloth.
5. Ensure the effective connection between the base and the fixer. Contamination will increase resistance and affect normal cooling.
6. The threaded joint should always be above the discharger, otherwise, it may lead to cold spots in the discharge room.
7. Overtime operation under high voltage may lead to shortened life.
8. Too long a cable may reduce the voltage and affect the output, and the lamp can not ignite.
9. Excessive cooling or direct blowing of the lamp may make the temperature fall below the working temperature, resulting in too high light color temperature and too low color reproduction index
How to Solve the Malfunction of Professional Lights of Hydrargyrum Medium-arc Iodide Lamp
1. Check whether the circuit breaker has been opened. Most hydrargyrum medium-arc iodide lamps have more than one circuit breaker.
2. After turning off the power, open the lens and check the micro switch connecting the lens lamp holder to ensure that it operates and is connected normally.
3. Replace another header cable.
4. Check the power supply. If the voltage is too low, it will not ignite.
5. Change the collocation between different lamp caps and electronic ballast.
6. Let the hydrargyrum medium arc iodide cool, and many lamps can not start.