LM631A Amprobe, LM631A Datasheet - Page 2

• Manufacturer Part Number: LM631A
• Description: DIGITAL LIGHT METER
• Manufacturer: Amprobe
• Type: Lightr

LM631A Digital Light Meter
General Specifications
Specifications (at 23°C±5°C, <75% R.H. non-condensing)
Visual Light Intensity
The CIE photopic curve is an international standard for the color response of the average human eye. CIE standard illuminant as a is
defined as a gas-filled tungsten-filament lamp operating at a correlated color temperature.
Amprobe® Test Tools
Function
Display:
Overrange:
Low Battery Indication:
Measurement Rate:
Operating Environment:
Storage Temperature:
Environment:
Battery:
Battery Life:
Standby Current:
Weight:
Warranty:
Ranges
Total Accuracy
Temperature Coefficient
Resolution
Spectral Response
Acceptance Angle
Peak Hold Response Time
Analog Output
31⁄ 2-digit (LCD) with maximum reading of 1999
(OL) is displayed
Change batteries immediately
2.5 times per second, nominal
0 °C to 50 °C (32 °F to 122 °F) at < 75% R.H.
- 20 °C to 60 °C (- 4 °F to 140 °F), 0 to 80 % R.H. with batteries removed
Indoor use, altitude up to 2000 m
4 pieces 1.5 V (AAA size) UM-4, R03
200 hours carbon-zinc battery
<1 μA; Dimensions: 170 x 44 x 40 mm
220 g
One-year
20 lux, 200 lux, 2000 lux, 20000 lux
20 fc, 200 fc, 2000 fc, 20000 fc
For CIE standard illuminant A (2856K): ± ( 3 % rdg + 10 digits)
0.1 x (specified accuracy)/°C (< 18 °C or > 28 °C),
0.056 x (specified accuracy)/°F (< 64.4 °F or > 82.4 °F)
0.01 lux; 0.01 fc
CIE photopic – CIE standard illuminant A
ƒ ’ 2 < 2 %; cosine corrected (150 °)
>50 mS pulse light
1 mV = 1 lux or 10 mV = 1 fc, nominal, continuous output
Range
Accuracy