Fluke 481 DESI Ion Chamber Survey Meter

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.

Manufacturer part number (MPN)

4022258

Brand

Fluke

Category

Tools

Radiation detected

Beta > 100 keV

Operating ranges

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

Automatic features

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

Power requirements

Two 9 V alkaline, 200 hours operation

Warm-up time

One minute

Battery life

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

Dimensions (W x D x H)

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

Weight

1.11 kg (2.5 lb)

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

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

Temperature range

-4°F to 122°F

Relative humidity

0% to 100% (at 140°F)

Geotropism

< 1%

• OEM-URL https://www.fluke.com/en-us/product/building-infrastructure/hvac-tools/fluke-481-desi