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Key Features
- High sensitivity measurement of rate and dose simultaneously, with the capability to record peak rate
- 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 auto-ranging 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
- Easy touch keys
- Screen - Bright, highly visible colors
- Auto-ranging and auto-zeroing
- RS-232 communications interface with optional Windows-based Excel add-in for data logging
- Ergonomic, anti-fatigue handle with replaceable grip, wrist strap and tripod mount
- Programmable flashing LCD display and audible alarm
- Easily-accessible battery door (operated by 2 9-volt alkaline batteries) on the outside of the bottom case
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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 Radiation Survey Meter 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. A clear and quantifiable result
from the Fluke 481 Radiation Detection Meter allows managers to comply with federal guidelines, without overreacting with unnecessary steps
that might halt operations, impact productivity or lead to lost revenue.
The Fluke-481 Radiation Survey/Detection Meter is ideal for detecting irradiated goods,
equipment, surfaces or environments in industrial settings, for ensuring worker safety and
complying with federal regulations.
- Target Applications
- Food processing or packaging screening
- Transportation goods screening
- Manufactured goods imported from Asia
- Ports
- First Responders (Police/Fire)
- Target Customers:
- Plant supervisors
- Government (Health, Etc)
- Port Authorities
- QA safety director
- Safety manager
- Environmental Health and Safety Manager (EHS)
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| Fluke 481 Radiation Survey Meter Specifications |
| Detector Type |
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
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| Radiation detected |
beta, x-ray, gamma |
| Electrical Specifications |
| 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)
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| 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 |
| General Specifications |
| 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
w/ 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) |
4" x 8" x 6" inches (10 x 20
x 15 cm) |
| Weight |
2.5 lb (1.11 kg) |
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