Fluke Victoreen 451P, Operator'S Manual

Page: 7 / 22

General Information
Specifications
1
1-3
Warm-Up Time Less than one minute for initial operation when the instrument is in temperature
equilibrium with the surrounding area and about 4 minutes for readings less than
20 μR/h in a 10 μR/h or less background
Drift After seven minutes operation, 0.04 mR/h equivalent, or less
Response Time Time measured from 10% to 90% of final value for a step increase/decrease in
radiation rate such that a range change does not occur:
0 to 500 μR/h (0 to 5 μSv/h) range: 5 seconds
0 to 5 mR/hr (0 to 50 μSv/h) range: 2 seconds
0 to 50 mR/h (0 to 500 μSv/h) range: 1.8 seconds
0 to 500 mR/h (0 to 5 mSv/h) range: 1.8 seconds
0 to 5 R/h (0 to 50 mSv/h) range: 1.8 seconds
NOTE: In pulsating field, the instantaneous rate should not exceed 5 R/h for
proper integration; instantaneous exposure rate is still limited to 5 R/h
Precision Within 5% reading
Readout Liquid Crystal Display : contains an analog bar graph with a permanent scale on
the display and a 2 1/2 digit display
Analog Display: the bargraph consists of 100 segments, 2 ½ inches long; the
scale has five major divisions; the appropriate value for the operating range of
the instrument will appear below the scale
Digital Display: the digital display is 2 1/2 digits followed by a significant zero
digit depending on the operating range of the instrument. The leading 1/2 digit is
blank, or a “1” or a “0” for clarity. Units of measure appear to the right of the
digital display. Appropriate multipliers also appear on the display
Units: as indicated under Range, programmable in R/h or Sv/h. Appropriate
multipliers also appear on the display
Auto-On Backlight: turns on when ambient light is less then twilight conditions
External Controls ON/OFF button, MODE button
Automatic Features Ranging and zeroing are fully automatic.
Environmental Operating Temperature Range : - 4º to + 122ºF (- 20º to + 50ºC)
Relative Humidity Range : 0 to 100%, non-condensing
Geotropism : less than 1%
Dimensions 8.5 (l) x 4.5 (w) x 8.6 in (h) (21 x 11.4 x 21.3 cm)
Weight Approximately 2.6 lb (1.2 kg)
Batteries Two 9-volt batteries provide over 200 hours continuous operation
* Specifications are subject to change without notice.