Amprobe LM-80 Digital Light Meter

  • Dual measurement capability in footcandles or lux
  • Measures from 0.01 to 20,000 footcandles or lux
  • Measurement ranges of 20/200/2000/20,000 footcandles or Lux
  • Analog DC Voltage output to operate with a cChart recorder or data logger
  • Measuring rate of 2.0 times/second
  • Data and peak hold features
  • Cosine corrected for the angular incidence of light (C.I.E sensitivity adjustment to photo optic curve)


The Amprobe LM-80 accurately measures light output of LED sources for all visible ranges.


Display 3-1/2 digit LCD
Measuring range 20, 200, 2,000, and 20,000 lux/fc (20,000 lux/fc range reading x1Q)
Over-range display Highest digit of “1” is displayed
Accuracy ±3% rdg ± 0.5% f.s.
(±4% rdg±10 dgts as >10,000 lux/fc range)
(calibrated to standard incandescent lamp at color temperature 2856K)
Repeatability ±2%
Temperature characteristics ±0.1 % I °C
Measuring rate Approximately 2.0 time/sec.
Operating temperature and humidity 32 °F to 104 °F (0 °C to 40 °C), 0% to 80% RH
Storage temperature and humidity 14 °F to 140 °F (-10 °C to 60 °C), 0% to 70% RH
Power source One 9 Volt battery, NEDA 1604 or JIS 006P or IEC 6F22
Battery life (typical) 200 hours (alkaline battery)
Photo detector One silicon photo diode with filter
Photo detector lead length 150 cm (approx.)
Photo detector dimensions (LxWxH) 94″ x 2.36″ x 1.06″ (100 x 60 x 27 mm)
Dimensions (LxWxH) 31″ x 2.83″ x 1.06″ (135 x 72 x 33 mm)
Weight 250 g (8.8 oz)
Analog output Standard jack output (3.5 mm, 3pole coaxial) 1mVDC /1 digit
Range 20 lux / fc, 1 0mV per lux / fc
200 lux / fc, 1 mV per lux / fc
2,000 lux / fc, 0.1 mV per lux / fc
20,000 lux / fc, 0.1 mV per 10 lux / fc
Add basic accuracy ±0.5% of LCD reading

What’s Included

  • LM-80
  • Carrying case
  • Battery


Product Manual »

2 reviews for Amprobe LM-80 Digital Light Meter

  1. Armando

    Muy buen equipo contra el precio

    El manual del equipo que tienen en la página web es de pésima calidad. No lo tienen en original sino que lo escanearon de una manual viejo con muy mala calidad.

    ✔ Yes, I recommend this product.

  2. jfgs62

    Good product

    I have the LM-80 and it gives reliable measures, It only lacks of autoranging feature everything else is good.

    ✔ Yes, I recommend this product.

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