Model 2401-P

Pocket-Size Survey Meter with Pancake GM

Part Number: 48-2875

Features

• Self-Contained Survey Instrument
• Integrated GM Pancake Detector
• Simple to Use
• Low Cost
• Rugged

The Model 2401-P instrument is a general purpose, pocket-size radiation detection meter designed around the venerable GM pancake detector. A simple switch allows the user to choose among the three ranges. Another switch selects between QUIET (click-per-event audio off), NORMAL, BAT CHECK, or OFF. The detector is conveniently packaged inside the instrument with a protective screen window. This instrument is available with a variety of meter faces for measuring contamination and exposure rate (see list on the Meter Faces tab).

Medical Application

This meter is great for measuring low-level surface contamination of beta emitting isotopes, or for locating dropped or lost (therapeutic) seeds in the Radiology or Nuclear Medicine departments.

• Specifications
• Meter Faces
• Options
• Documents
• Replacement Parts

• Specifications
• Meter Faces
• Options
• Documents
• Replacement Parts

Specifications

Indicated Use	Alpha, Beta, Gamma survey
Detector	Pancake GM with stainless steel protective screen (79% open)
Window	Active: 15.51 cm2 (2.4 in2) Open: 12.26 cm2 (1.9 in2)
Range	0 to 200 mR/hr 0 to 660 kcpm
Sensitivity (137Cs gamma)	Typically 3300 cpm per mR/hr
Efficiency	14C: 5% 90Sr/90Y: 22% 99Tc: 19% 99mTc: < 1% 32P: 32% 239Pu: 15%
Energy Response	Energy dependent
Meter Dial	0 - 6.6 kcpm, 0 - 2.0 mR/hr, BAT OK (Meter Faces tab lists other available meter faces)
Multipliers	x1, x10, and x100
Response Time	Typically 11 s from 10% to 90% of final reading
Alarm	No
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
Construction	Cast and drawn 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

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Meter Faces

 This table lists the most commonly used meter faces.

 

Meter Face	Image (click to view larger)	Description
202-850		0 - 6.6 kcpm  0 - 2 mR/hr BAT OK
202-857		0 - 500 cpm 0 - 0.15 mR/hr BAT OK
202-872		0 - 10 cps 0 - 1.9 µSv/h BAT OK
202-916		0 - 500 cpm BAT OK
202-992		0 - 1.65 kcpm 0 - 0.5 mR/hr BAT OK
202-994		0 - 0.15 mR/hr BAT OK
202-999		0 - 1.5 μSv/h BAT OK
202-1038		0 - 6.6 kcpm 0 - 20 µSv/h BAT OK

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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

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Documents

• Data Sheet
• Product Manual
• CE Certificate

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Replacement Parts

Description	Part Number
GM Tube	01-5008

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