The Amprobe LM631A Digital Light Meter designed for simple one hand operation with the measurement reading in lux or fc units
Features & Applications:
The Amprobe LM631A unit offers high resolution readings and adherence to published standards for human eye response to illuminance.
Designed for facility engineers or building maintenance personnel who need to ensure indoor light and work area lighting requirements, compliance with safety regulations, and to monitor building and security light levels. Also useful for anyone who wants to measure illumination levels.
Features:
- Measures wide range of light up to 20,000 fc or lux, front panel switchable Accurate, high resolution of 0.01 fc/lux
- Sensor dome has 45" attached cord for measurement flexibility
- Built-in CIE spectrum curve for accurate human eye response
- Peak hold and data hold
- Large 3-1/2-digit display with backlight feature
- Meets CE EN61326-1 certification for safety ratings
- Analog output for monitoring and charting
- Case is rugged valox plastic in ergonomic design for holding ease
- Battery hatch cover to easily replace batteries
- Shipped with:
- Carrying case
- Extra lens cover
- 4 AAA batteries installed
Spec Summary:
| Specifications |
Visual Light Intensity |
|
Ranges: |
|
20 lux, 200 lux, 2000 lux, 20000 lux20 fc, 200 fc, 2000 fc, 20000 fc |
|
Total Accuracy: |
| For CIE standard illuminant A (2856K): |
± ( 3 % rdg + 10 dgts) |
|
Temperature Coefficient: |
|
0.1 x (specified accuracy)/°C (< 18 °C or > 28 °C),0.056 x (specified accuracy)/°F (< 64.4 °F or > 82.4 °F) |
|
Resolution: |
|
Spectral Response: |
|
CIE photopic – CIE standard illuminant A |
|
Acceptance Angle: |
|
ƒ ' 2 < 2 %; cosine corrected (150 °) |
|
Peak Hold Response Time: |
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Analog Output: |
|
1 mV = 1 lux or 10 mV = 1 fc, nominal, continuous output |
|
The CIE photopic curve is an international standard for the color response of the average human
eye. CIE standard illuminant is defined as a gas-filled tungsten-filament lamp operating at a
correlated color temperature.
| General Specifications |
Display: |
|
3 1⁄2-digit (LCD) with maximum reading of 1999 |
|
Overrange: |
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Low Battery Indication: |
|
Change batteries immediately |
|
Measurement Rate: |
|
2.5 times per second, nominal |
|
Operating Environment: |
|
32 to 122°F (0 to 50°C) at < 75% R.H. |
|
Storage Temperature: |
|
- 4 to 140 °F (- 20 to 60 °C), 0 to 80 % R.H. with batteries removed |
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Environment: Indoor use: |
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Battery: |
|
4 pieces 1.5 V (AAA size) UM-4, R03 |
|
Battery Life: |
|
200 hours carbon-zinc battery |
|
Auto Power Off: |
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Standby Current: |
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Dimensions: |
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Weight: |
|
220 g including batteries |
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Warranty: |
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