Fluke 941 Light Meter
The Fluke 941 Light Meter is a portable, handheld instrument designed to measure visible light in lux or foot-candles across a wide range of applications, from cleanrooms to agriculture and HVAC operations. Its large digital display, data hold, and min/max functions make it easy to use, while a protective sensor cap and auto power-off ensure durability and long battery life.
Description
The Fluke 941 Light Meter provides reliable and precise illumination measurement for professionals working in various indoor environments. It can measure light emitted by fluorescent, metal halide, high-pressure sodium, and incandescent lamps, with a maximum range of 200,000 lux or 20,000 foot-candles. The handheld device features a digital display with a data hold function, allowing users to freeze readings, and min/max functions to track high and low light levels.
With cosine-corrected silicon photoelectric sensors, the Fluke 941 ensures accurate readings across different angles of incidence. Its lightweight, ergonomic design and separate sensor with extension cord make it ideal for measuring light in tight or hard-to-reach locations. Applications include environmental health and safety inspections, room illumination assessment, cleanroom monitoring, agricultural light measurement, and troubleshooting lighting systems.
The meter is powered by a 9V battery, offering up to 200 hours of operation, and includes an auto power-off feature to extend battery life. Its compact design, along with a protective sensor cap, ensures both portability and durability for professional use.
Features
- Measurement Range: 20–200,000 lux or 20–20,000 foot-candles
- Accuracy: ±3% for calibrated incandescent lamps; ±6% for other visible light sources
- Display: 3½ digit, 1999-point LCD screen with fast sampling (2.5 readings/sec)
- Data Hold: Freeze current reading for easy recording
- Min/Max Function: Track the highest and lowest readings
- Sensor: Silicon photoelectric diode with optical filter; cosine corrected (30° ±2%, 60° ±6%, 80° ±25%)
- Power: 9V battery (NEDA 1604/IEC 6LR61)
- Battery Life: 200 hours; auto power-off in ~6 minutes to save power
- Dimensions: Main unit: 130 × 63 × 38 mm; Sensor: 80 × 55 × 29 mm
- Weight: 220 g including battery
- Applications: Cleanrooms, agriculture, HVAC, room illumination assessment, light source troubleshooting
- Warranty: 1 year
Includes
- 941 luminometer
- 9V battery
- User manual
