Description
Light Meters – Lux, FC, Color Temperature Corrected
Sper Light Meters – Lux, FC, Color Temperature Corrected light meters: four light meters calibrated to read in Lux, or Foot-Candles, or both Lux and FC and an advanced version color temperature compensated for tungsten, fluorescent, sodium and mercury sources. All probes are color and cosine corrected for CIE photopic spectrum.
Features of the Lux, FC, and Color Temperature Corrected Light Meters
- Sensors color and cosine corrected to CIE photopic spectrum
- Large, easily read display
- External zero adjustment
- NIST traceable certificate (option)
- Hold function
- Easel back
- Model 840006 reads Lux (0-20,000 Lux)
- Model 840021 reads Foot-Candles (0 – 2,000 FC)
- Model 840020 reads Lux (0-400,000 Lux), Foot-Candle (0 – 40,000 FC), min/max and bar graph display, computer output
- Model 840022 reads Lux (0-400,000 Lux), Foot-Candle (0 – 40,000 FC), min/max, bar graph display, hold function, computer output and color corrected for tungsten, fluorescent, sodium and mercury lighting
Specifications
| 840006 – Lux | ||
| Range | Resolution | Accuracy |
| 0 – 1,000 Lux | 1 Lux | ±(5%+4dgt) |
| 2,000 – 10,000 Lux | 10 Lux | ±(5%+4dgt) |
| 840021 – Foot-Candle | ||
| 0 – 199.9 FC | 0.1 FC | ±(5%+4dgt) |
| 200 – 1999 FC | 1 FC | ±(5%+4dgt) |
| Electronic Specifications (23±5°C); Tested under the environmental RF field strength less than 3 V/Mand frequency less than 30 MHz. | ||
| 840020 840022 – Lux and FC | |||
| Range | In-range Display | Resolution | Accuracy |
| 40.00 Lux | 0 – 40.00 | 0.01 | ±(3% rdg+0.5% fs) |
| 400.0 Lux | 36.6 – 400.00 | 0.1 | ±(3% rdg+0.5% fs) |
| 4,000 Lux | 360 – 4,000 | 1 | ±(3% rdg+0.5% fs) |
| 40,000 Lux | 3600 – 40,000 | 10 | ±(3% rdg+0.5% fs) |
| 400,000 Lux | 10,000 – 400,000 | 100 | <100,000 ±(3% rdg+0.5% fs) >100,000 for reference only |
| 4.000 FC | 0 – 3.720 | 0.001 | ±(3% rdg+0.5% fs) |
| 40.00 FC | 3.35 – 37.20 | 0.01 | ±(3% rdg+0.5% fs) |
| 400.0 FC | 33.5 – 3720.0 | 0.1 | ±(3% rdg+0.5% fs) |
| 4,000 FC | 335 – 3,720 | 1For | ±(3% rdg+0.5% fs) |
| 40,000 FC | 930 – 37,200 | 10 | <9,300 ±(3% rdg+0.5% fs) >9300 for reference only |
| Accuracy tested by a standard parallel light, tungsten lamp of 2856°K | |||
Ordering Information
Each light meter kit comes ready to use and includes: meter. soft padded case, instructions, detachable sensor with cover and 9 V battery. When ordering please select factory or NIST traceable calibrtion certificate. We will ship factory calibrated unless NIST is selected from the drop-down menu.
Optional Equipment
| 840057 | RS232 cable (840020, 840022 only) |
| 850080 | Software (840020, 840022 only) |
| 840094 | RS232 to USB adaptor cable (840020, 840022 only) |
| 840093 | Field tripod |
| 840090 | Water resistant instrument pouch |
