Ludlum 2241-2RK w/44-9 Probe Meta Adjustable over a range from

Adjustable over a range from 20 SCFM to 60 SCFM the air flow is controlled at constant standard conditions of 25 degrees C temperature and 760 mm Hg pressure within plus or minus 1 SCFM

and a color LCD display that can be viewed in all lighting conditions

These Controllers can also be operated manually

The sensor on the 750 module uses patented Doppler technology to directly measure average velocity in the flow stream

The new Pocket Colorimeter™ II Filter Photometer is a true go-anywhere instrument

Ludlum 2241-2RK w/44-9 Probe Meta Adjustable over a range fromThe Ludlum Model 2241 2RK is a portable general purpose survey meter equipped with a Geiger Mueller detector for measurement of alpha, beta and gamma radiation. The Model 2241 operated in either Ratemeter Mode with a moving decimal point and six digit in Scaler Mode. The unit has both visual and audible alarms.