Model 2401-EWA

End-Window GM Pocket-Size Survey Meter with Alarm

Part Number: 48-2997

Features

Integrated Meter with End-Window GM Detector
Audio & Visual Alarm
Simple to Use
Low Cost

The Model 2401-EWA instrument is a general purpose, pocket-size radiation detection meter that employs an end-window type GM detector. The detector is conveniently packaged inside the instrument, with a protective screen located in the middle of the top end of the instrument. The meter presents two scales, cpm for contamination measurements and mR/hr for exposure rate, and it includes an audio and visual alarm.

Specifications

Indicated Use	Alpha, Beta, Gamma survey
Detector	1.4 cm (0.57 in.) diameter end-window GM
Range	0 to 200 mR/hr 0 to 210,000 cpm
Sensitivity (¹³⁷Cs gamma)	Typically 1050 cpm per mR/hr
Energy Response	Energy Dependent
Meter Dial	0 - 2 mR/hr, 0 - 2.1 kcpm, BAT OK
Multipliers	x1, x10, and x100
Response Time	Typically 11 s from 10% to 90% of final reading
Alarm	Yes
Audio	Click-per-event, may be turned off by moving selector to QUIET position
Power	9 volt battery
Battery Life	Typically 250 hours with alkaline battery at normal background levels
Construction	Drawn and cast aluminum, with membrane panel
Size (H x W x L)	4.6 x 8.4 x 13.5 cm (1.8 x 3.3 x 5.3 in.)
Weight	0.4 kg (0.9 lb), including battery

Options

Option	Description	Part Number
Model 2401-Series Handle	This convenient L-shaped handle provides a secure and comfortable grip for the Model 2401-Series survey meters.	4397-165
Model 2401-Series Belt Clip	Adds a belt clip to the back of the instrument for ease of carrying.	4397-176
Model 2401-Series Wrist Strap	Adds a wrist strap to the instrument for ease of carrying.	4397-182
Model 2401 Series Hard Case	Rugged case providing crushproof, water resistant, and dust proof protection.	2311119
Model 2401-Series Canvas Case	Canvas case with a zip closure.	2310517