481 Radiation Detection Meter

Identify irradiated goods as well as remediate contamination and safety issues while minimally impacting operations

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$4,767.00 CAD
Normally ships in 3-4 Weeks

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The Fluke 481 Radiation Detection Meter is a portable and practical means for discovering irradiated goods, and for helping remediate contaminant and safety issues while minimally affecting performances. Ideal for detecting irradiated goods, equipment, surfaces or environments in industrial settings, the 481 Radiation Meter helps ascertain worker safety and compliance to federal regulations.

Use of the Fluke 481 assures employees that radiation dangers are known, monitored and calculated for their security. Whenever radiation is found, a clear and quantifiable result provides handlers to comply with federal guidelines while avoiding unnecessary steps that could stop procedures, impact productivity or lead to missed revenue.

• Detects skin-dose (beta particle) and deep-dose (gamma) and x-ray radioactivity
• Requires no adjustments; simple two button process
• Provides promptly read, correct value through autoranging capability
• Easily visible inside truck trailers and other low-light situations with automated backlight
• Works dependably inside or outside thanks to sealed case
• 30% more precise than other available meters
• Delivers more than one week of uninterrupted functioning with two 9-volt alkaline batteries
• Proven in use by state and local governmental emergency response professionals, state inspectors, HAZMAT teams and nuclear power workers
• Measures both dose and dose-rate
• Valuable for contamination-detection, general radiation area metering, radiation-level monitoring, and hazardous materials assessment
• Rugged Fluke design

General Specifications

Radiation Detected

Beta > 100 keV
Gamma > 7 keV

Operating Ranges

0 mR/h - 5 mR/h (8 s)
0 mR/h - 50 mR/h (2.5 s)
0 mR/h - 500 mR/h (2 s)
0 R/h - 5 R/h (2 s)
0 R/h - 50 R/h (2 s)


Within 10% of readings between 10% and 100% of full scale indication on any range, exclusive of energy response


Chamber (cc volume air ionization) 349 cc
Chamber wall (phenolic) 246 mg/cm2
Chamber window (mylar) 6.6 mg/cm2
Beta slide 440 mg/cm2

Automatic Features

Auto-zeroing, auto-ranging, and auto-backlight

Power Requirements

Two (2) 9 V alkaline, 200 h operation

Warm-Up Time

One (1) min

Battery Life

Four (4)+ h continuous use per battery pack (assumes 50% brightness of LCD)

Dimensions (W x D x H)

10 cm x 20 cm x 15 cm (4 in x 8 in x 6 in)


1.11 kg (2.5 lb)


Display LCD Analog / Digital with Backlight


100 element bar graph 6.4 cm long. Bar graph is divided into 5 major segments, each labeled with the appropriate value for the range of the instrument


2.5 digit display is followed by a significant zero digit depending on the operating range of the instrument. The units of measurement are indicated on the display at all times. Digits are 6.4 mm (0.25 in) high. Low battery and freeze indicators are also provided on the display



Integrate Mode

Operates continuously 30 s after the instrument has been turned on. Integration is performed even if the instrument is displaying in mR/h or R/h

Freeze Mode

Will place a tick mark on the bar graph display to hold on the peak displayed value. The unit will continue to read and display current radiation values



Temperature Range

-4°F - 122°F

Relative Humidity

0% - 100% (at 140°F)


< 1%

Carrying case for the 481 radiation detection meter
Normally ships in 4-6 Weeks
$938.00 CAD