Fluke 481-DESI Instruction manual

Fluke 481
Radiation Survey Meter
The Fluke 481 Radiation Survey Meter
is a portable and practical means
for identifying irradiated goods, and
for helping remediate contamination
and safety issues while minimally
impacting operations.
Use of the device reassures employees that
radiation risks are known, monitored and measured
for their protection. If radiation is found, a clear
and quantifiable result allows managers to comply
with federal guidelines, without overreacting with
unnecessary steps that might halt operations, impact
productivity or lead to lost revenue.
Features Include:
• Detects skin-dose (beta particle) and deep-dose (gamma)
and X-ray radiation
• Requires no adjustments; simple two button operation
• Delivers quickly read, correct value through autoranging capability
• Easily visible inside truck trailers and other low-light conditions
with automated backlight
• Works reliably indoors or outdoors thanks to sealed case
• 30 % more accurate than other available meters
• Delivers more than one week of continuous operation from 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
• Useful for contamination-detection, general radiation area surveys,
radiation-level monitoring, and hazardous materials assessment
• Ruggedized Fluke design
Technical Data
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com

Radiation detected Beta > 100 keV
Gamma > 7 keV
Operating ranges,
response time
0 mR/h to 5 mR/h (8 sec)
0 mR/h to 50 mR/h (2.5 sec)
0 mR/h to 500 mR/h (2 sec)
0 R/h to 5 R/h (2 sec)
0 R/h to 50 R/h (2 sec)
Accuracy Within 10 % of readings between 10 % and 100 % of full scale
indication on any range, exclusive of energy response
Detector 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 9 V alkaline, 200 hours operation
Warm-up time One minute
Display LCD
analog/digital
with backlight
Analog 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
Digital 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
Modes Integrate mode Operates continuously 30 seconds 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
Environmental Temperature range -4 °F to 122 °F
Relative humidity 0 % to 100 % (at 140 °F)
Geotropism < 1 %
Dimensions
(W x D x H)
10 cm x 20 cm x 15 cm (4 in x 8 in x 6 in)
Weight 1.11 kg (2.5 lb)
Fluke 481 Radiation Survey Meter
Detector Ion chamber
End users • X-ray manufacturers
• State inspectors
• Government agencies
• Police and fire departments
• Emergency response and hazmat teams
• Nuclear medicine labs
• Hospital radiation safety officers
• Nuclear power workers
Radiation detected beta, x-ray, gamma
2 Fluke Corporation Fluke 481 Radiation Survey Meter
Fluke Corporation
PO Box 9090, Everett, WA 98206 U.S.A.
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U.S.A. [phone] or
Fax [phone]
In Europe/M-East/Africa [phone] or
Fax [phone]
In Canada (800)-36-FLUKE or
Fax [phone]
From other countries [phone] or
Fax [phone]
Web access: http://www.fluke.com
©2011 Fluke Corporation.
Specifications subject to change without notice.
Printed in U.S.A. 4/2011 4022637A D-EN
Modification of this document is not permitted
without written permission from Fluke Corporation.
Fluke. Keeping your world
up and running.®
Specifications
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com