Product Overview
1. Key Features
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Measurement Range: 1 Lux to 50,000 Lux (3 ranges: 2000/20,000/50,000 Lux)
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High Accuracy: ±4% reading ±0.5% full scale (>10,000 Lux: ±5% ±10 digits)
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Fast Response: Sampling rate of 2.0 times per second
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Practical Functions: Data hold (HOLD), auto-zero, backlight, overload indication
2. Technical Specifications
| Item | Specification |
|---|---|
| Display | 3½-digit LCD (maximum reading: 1999) |
| Ranges & Multiplier | - 2000 Lux range: Direct reading - 20,000 Lux range: Reading ×10 - 50,000 Lux range: Reading ×100 |
| Repeatability Error | ±2% |
| Temperature Coefficient | ±0.1%/°C |
| Sensor | Photodiode (with filter lens) |
| Operating Conditions | 0°C to 40°C (32°F to 104°F), humidity 0-70%RH |
| Storage Conditions | -10°C to 50°C (14°F to 122°F), humidity 0-80%RH |
| Power Supply | 9V battery (continuous use: ~200 hours) |
| Dimensions & Weight | 165×67×32mm / ~155g (including battery) |
3. Functional Design
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Range Selector Switch: Quick switching between 2000/20,000/50,000 Lux
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Data Hold: HOLD function locks current reading (displays "H")
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Backlight: For low-light environments
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Overload Indication: Displays "1" when exceeding range (switch to higher range)
4. Maintenance & Calibration
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Regular Calibration: Recommended to maintain accuracy (sensor sensitivity may degrade over time)
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Battery Replacement: Replace 9V battery when " " appears on LCD
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Usage Notes: Avoid high temperature/humidity; keep sensor clean
5. Application Scenarios
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Education: Classrooms (750-200 Lux), laboratories (1500-300 Lux)
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Medical: Operating rooms (1500-750 Lux), wards (300-150 Lux)
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Industrial: Precision work (3000-300 Lux), warehouses (150-75 Lux)
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Commercial: Counters (1500-750 Lux), display windows (3000-300 Lux)
6. Accessories & Notes
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Included: User manual
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Note: Specifications subject to change; refer to actual product.
