What is the service life of medium-pressure UV lamps?

I. Lifetime Range (by quality & working conditions)

• Standard domestic lamps: 1,000–5,000 hours (continuous operation)

• Premium domestic / imported lamps: 5,000–8,000 hours (common warranty: 5,000 hours)

• High-end / special applications: 8,000–9,000 hours (under good maintenance and stable operation)

II. Industry Replacement Standard

• Universal criterion: Lamps must be replaced when UV intensity drops to 70% of the initial value.

• Most systems are equipped with UV intensity monitoring and will alarm below the threshold.

III. Key Factors Affecting Lamp Life

1. Switching frequency: Frequent cold starts significantly shorten life; continuous operation is recommended.

2. Operating temperature: Ideal range is 600–750℃; overheating causes electrode burnout and quartz aging.

3. Water quality & maintenance: Scale on quartz sleeves causes overheating and faster decay; regular cleaning extends life.

4. Electrical matching: Ballast current must be rated; overcurrent damages electrodes.

IV. Lifetime Conversion (by daily operating hours)

• 8 hours per day: 1–2.7 years

• 12 hours per day: 0.7–1.8 years

• 24-hour continuous operation: 4–10 months