SPM 1 is a photovoltaic (PV) light meter used to measure solar radiation, solar energy or solar power. The meter's easy-to-read 4-digit LCD screen clearly displays Ptot in W/m² or BTU/(ft² x h), while the device's auto data memory stores up to 43,000 data sets.

Photovoltaic Light Meter SPM 1

數量

Measurement range	0 ... 2000 W/m² or 0 ... 634 BTU/(ft² x h)
Resolution	0.1 W/m² or 0.1 BTU/(ft² x h)
Accuracy	Â±10 W/mÂ² or Â±3 BTU/(ftÂ² x h) or Â±5%; whichever is greatest in sunlight Additional temperature induced error Â±0.38W/mÂ²/°C or Â±0.12 BTU/(ftÂ² x h)/°C from 25°C
Angular accuracy	Cosine corrected < 5% for angles < °60
Drift	<Â± 2% per year
Sampling rate	4 times per second
Detector	1 x silicon photovoltaic sensor
Internal memory	Auto data memory capacity: 43,000 sets Manual data memory capacity: 99 sets
Operating conditions	0 ... +50ÂºC or +32 ... +122ÂºF; < 80% RH
Power supply	4 x AAA Li-ion batteries (approx. 16 days of continuous use at full charge)
Dimensions	111 x 64 x 34 mm or 4.37 x 2.52 x 1.34"
Weight	158 g / 0.35 lb

Photovoltaic Light Meter SPM 1

Tech Specs