logomov2s.gif (46942 bytes) 

Broad Range Lux/FC Meter 840022 
Click Photo to Enlarge

Broad Range Lux/FC Meter, 840022


All of the functions of Light Meter 840020, plus max-min-avg functions, automatic power off, RS232C output and a detachable probe for easier replacement or repair. Higher range of up to 50,000 lux, 5,000 footcandles. A unique and very useful function is the meter's ability to compensate for the different colors of tungsten, fluorescent, mercury and sunlight, with the push of a button. The result is readings true to actual lighting conditions. Also able to compare the % difference between two light intensities. A special contrast control allows the LCD to be clearly read from different angles. Comes with a soft carrying case and 9V battery. 

Dimensions (Meter) 7 x 3 x 1-1/4"
Dimensions (Sensor) 3 x 2 x 1/2"
Weight 11.6 oz.
Display Dual Function, 4 digit display, 0.5" high
Light Type Selection Sun Light, Fluorescent, Mercury, and Tungsten. 

Measure High Pressure Sodium by using the Tungsten setting  and multiplying the reading by 1.13.  

Measure Metal Halide lamps by using the Tungsten setting and a conversion factor of 1.0.

Sensor Exclusive photo diode and color correction filter Spectrum designed to meet CIE
Sampling Time Approximately 0.4 sec
Operating Temperature 0 - 50C,
(32 - 122F)
Operating Humidity Max 80% RH
Power Supply 006P DC 9V battery (Heavy duty alkaline type)
Power Current Approximately DC 5.3 mA


Measurement Range
Unit Resolution Accuracy
0 - 1,999 Lux 1.0 ?% Reading + 2d
2,000 - 19,990 Lux 10 ?% Reading + 2d
20,000 - 50,000 Lux 100 ?% Reading + 2d
0 - 180.6 Footcandles 0.1 ?% Reading + 2d
200 - 1,806 Footcandles 1.0 ?% Reading + 2d
2,000 - 5,000 Footcandles 10 ?% Reading + 2d
0 to max 1999% 1%


Suggested Settings
Mercury Outdoor use for street or parking lights
Sunlight Outdoor use for daylight
Fluorescent Indoor business
Note:  To use this setting for High Pressure Sodium light sources, multiply the reading by 1.13.  
Indoor residential


Accessories:  click on item number for additional information.

With NIST traceable certificate of calibration:
840055  RS232 Cable for 840022,  
840051 Datalogger,   
840053 DATA LAB Graphical Software  



navbar.gif (19424 bytes)

Send comments to: