HANNA HI97500 Lux Meter (0.001–1.999 Klux; 0.01–19.99 Klux; 0.1–199.9 Klux)

HANNA HI97500 Light Meter

HANNA HI97500 Light Meter: Precise, Durable for Every Environment

Ensuring accurate illumination levels is a key factor in optimizing office performance, increasing greenhouse crop productivity, and complying with occupational safety regulations (OSHA).
The HANNA HI97500 is a dedicated lux meter from Hanna Instruments (Europe), distinguished by its durable water-resistant design, flexible long-cable sensor probe, and 3 wide measurement ranges up to 199.9 Klux.

Overview of the HANNA HI97500 Light Meter

The HANNA HI97500 is a portable lux meter series specifically designed to evaluate luminous flux and illuminance in both indoor and outdoor environments. The instrument features a rugged water-resistant housing, protecting internal optical components from weather elements and harsh industrial conditions.
A standout feature of this device is its silicon photodiode sensor connected via a 1.5-meter coaxial cable. This design allows operators to take flexible measurements in hard-to-reach angles or at distances without casting shadows that could distort the measurement readouts.

Key Features of the HANNA HI97500

Flexible 3-Range Quick Switching
The meter integrates a RANGE key that allows operators to seamlessly switch between 3 measurement ranges to achieve optimal resolution for each testing environment:
Range 0.001 to 1.999 Klux (Resolution $1\text{ Lux}$): Ideal for low-light areas, workspaces, and libraries.
Range 0.01 to 19.99 Klux (Resolution $10\text{ Lux}$): Suitable for indoor natural light and factory lighting systems.
Range 0.1 to 199.9 Klux (Resolution $100\text{ Lux}$): Designed for outdoor environments, direct sunlight, or high-power agricultural lighting systems.
High-Response Silicon Photodiode Sensor
The precision optical sensor is paired with a spectral response filter matching the human visual response curve (CIE standard curve). This ensures measurement readouts accurately reflect the true light intensity affecting the human eye or environment.
Energy Saving and Device Protection
Outstanding Battery Life: Powered by a single 9V battery providing up to 200 hours of continuous operation.
Auto-Off Function: Automatically shuts off after 7 minutes of inactivity to prevent battery drain.
Low Battery Indicator: A flashing “V” icon on the LCD screen prompts users to proactively replace the battery prior to conducting critical measurements.

Technical Specifications

Range: 0.001 to 1.999 Klux; 0.01 to 19.99 Klux; 0.1 to 199.9 Klux
Resolution: 0.001 Klux; 0.01 Klux; 0.1 Klux
Accuracy: ±6%
Power Supply / Battery Life: 9V battery, approx. 200 hours of continuous use with auto-off after 7 minutes of non-use
Operating Environment: 0 to 50°C
Dimensions: 164 x 76 x 45 mm
Weight: 180g
Accessories: Main unit, battery, protective carrying case, instruction manual