logomov2s.gif (46942 bytes)

Sper Light Meter Lux

Light Meter Ft Candle Scale, 840021

Applications include light levels in work places, labs and schools, environmental studies, biology, optics, reflectance and translucence properties of materials. Compact and portable, can be used to monitor light levels anywhere, or to check the lux level of a particular light source. Use to check compliance with ANSI/NFPA 101, (standards for emergency and exit lighting). Sper Scientific light meters are cosine and color corrected and have a range of 0.1 to 2000 Foot candle scale. Quick and accurate response. The selenium cell photo sensor is hermetically sealed to ensure long term stability. Large easily legible 4 digit LCD. Also has a data hold switch to freeze results and a recorder output. Comes with carrying case, photo-sensor cover, instructions and a 9-Volt battery.

Dimensions (Main Unit) 4.75 x 2.5 x 1"
Dimensions (Photo-sensor) 5 x 2.5 x 1.5"
Dimensions (Photo-sensor lead) 54"
Weight (Main Unit) 6 oz.
Weight (Photo-sensor) 3 oz.
Display 3-1/2 digit LCD - Maximum reading 1999
Overload Display "1" displayed on the left
Power Supply One 9V battery. Lasts approx. 200 hours
Range 20, 200, 2,000 Footcandles
Accuracy 20 fc scale, ?% reading, ?.5 FS
200 fc scale, ?% reading, ?.5% FS
2,000 fc scale, ?% reading, ?% FS
Temperature Characteristics ?.1%/C, (i.e., for 1C rise or drop in the temperature the readout will be affected by the ?.1%)
Repeatability ?%
Incident Angle Characteristics 30 degrees: ?%
60 degrees: ?%
90 degrees: ?5%
Photo-sensor Selenium cell, hermetically sealed
Recorder Output 20mV full scale


Accessories:  click on item number for additional information.

With NIST traceable certificate of calibration:


navbar.gif (19424 bytes)

Send comments to:jsi@jsits.com