XAR-L Digital Illuminance Meter
XAR-L Digital Illuminance Meter
XAR-L Digital Illuminance Meter
XAR-L is a portable precision instrument used to measure illuminance (lux, footcandle) in the field. It is meet CIE photopic spectral response. The light sensor used in the meter is a very stable, long life silicon photo diode.
Features
Light-measuring levers ranging from 0 to 188,000 lux, 0 to 17,472 fc (footcandle) repeatedly.
Spectral sensitivity close to CIE photopic curve.
Accurate and instant response.
Data-Hold function for holding measuring values.
Unit display for easy reading.
Simultaneously display the measured values of lux and fc illuminance.
Maximum and minimum measurements.
Easy to read large backlight display
Trend chart display showing the past readings for illuminance (lux)
With temperature and humidity measurement
Only two buttons and easy to operate
Four AA Alkaline Batteries
Application
Lighting engineers and specifiers
R&D at light products manufacturers
Inspection of light sources at construction sites, government and educational facilities
Maintenance of lights in factories, offices, and hospitals
Electrical product manufacturers
Quality control of light sources at home
Agricultural and forestry industries
Device
1. Photo detector
2. LCD display
3. Power button
4. Function button
DISPLAYs
Normal Display
1. Temperature
2. Relative humidity
3. Illuminance value in fc
4. Battery gauge
5. Illuminance value in lux
6. Illuminance unit (lux)
7. Maximum illuminance in lux and fc
8. Minimum illuminance in lux and fc
SPECTRAL SENSITIVITY CHARACTERISTIC
To the detector, the applied photo diode with filter makes the spectral sensitivity characteristic almost meet C.I.E. (INTERNATIONAL COMMISSION ON ILLUMINATION) Photopic curve as the following chart described.
Specifications
Illuminance Specification
Measuring Range | 0 to 188,000 lux, 0 to 17,472 fc |
Spectral Response | CIE Photopic (CIE human eye response curve) |
Accuracy | ±5% reading, ±1 digit (<10,000Lux) ±10% reading, ±10 digit (>10,000Lux) |
Repeatability | ±3% |
Photo Detector | One silicon photo diode and spectral response filter |
Temperature Specification
Temperature Range | -10°C to 50°C (14°F to 122°F) display |
Display Resolution | 0.1°C (0.1°F) |
Display Options | °C/°F switchable |
Accuracy | ±0.5°C (±0.9°F) |
Response Time | 5~30 seconds (device must equilibrate with environment) |
RH Specification
Measurement Range | 0.0~99.9%RH |
Display Resolution | 1%RH |
Accuracy | ±4.5%RH |
Response Time | <8 seconds for 63% of step change |
General
Operating | -10°C to 50°C (14°F to 122°F), 0~90% RH non-condensing |
Storage | -10°C to 60°C (14°F to 140°F), 0~80% RH non-condensing |
Power Supply | Four AA Alkaline Batteries |
Dimensions | 75x165x25 mm (2.95x6.49x0.98”) |
Weight | 124 grams (4.37 oz.) without batteries |
RECOMMENDED ILLUMINATION
1fc=10.76Lux
Locations | Lux | fc | |
Office | Conference, Reception room | 200~750 | 18~70 |
Clerical work | 700~1,500 | 65~140 | |
Typing drafting | 1,000~2,000 | 93~186 | |
Factory | Visual work at production line | 300~750 | 28~70 |
Inspection work | 750~1,500 | 70~140 | |
Electronic parts assembly line | 1,500~3,000 | 140~279 | |
Packing work, Entrance passage | 150~300 | 14~28 | |
Hotel | Public room, Cloak room | 100~200 | 9~18 |
Reception | 200~500 | 18~47 | |
Cashier | 750~1,000 | 70~93 | |
Store | Indoors Stairs Corridor | 150~200 | 14~18 |
Show window, Packing table | 750~1,500 | 70~140 | |
Forefront of show window | 1,500~3,000 | 140~279 | |
Hospital | Sickroom, Warehouse | 100~200 | 9~18 |
Medical Examination Room | 300~750 | 28~70 | |
Operating room, emergency treatment | 750~1,500 | 70~140 | |
School | Auditorium, Indoor Gymnasium | 100~300 | 9~28 |
Class room | 200~750 | 18~70 | |
Laboratory, Library, Drafting room | 500~1,500 | 47~140 | |