Fluke 481 Support and Manuals
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Popular Fluke 481 Manual Pages
Manual - Page 1
MyFlukeStore Shop for Fluke products online at: www.
.com 1.877.766.5412
481
Ion Chamber Survey Meter
Operators Manual
April 2011 © 2011 Fluke Corporation. Specifications are trademarks of their respective companies. All product names are subject to change without notice. All rights reserved.
Manual - Page 2
... or enforceability of shipment. To obtain warranty service, contact your product online, visit http://register.fluke.com. Fluke Europe B.V. LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be error free or operate without interruption. Parts, product repairs, and services are warranted for the repair and return transportation charges (FOB Shipping Point...
Manual - Page 3
...10 Battery Replacement 10 Ion Chamber Window Replacement 10 Outer Mylar Window Replacement 11 Desiccant Regeneration 11 Lithium Cell Replacement 12 Replaceable Parts Information 13 Recalibration and Service Information 13 Troubleshooting Precautions 13 Troubleshooting 14 Self-Test Failure 14 High Background Readings 14 Erratic Readings 14
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Manual - Page 5
Introduction
The Model 481 Ion Chamber Survey Meters are displayed next to the 2 ½-digit display. The readout consists of five segments each. The bar graph contains a zero segment and twenty groups of a 2 1/2-digit liquid crystal display and a 100 segment analog bar graph. External controls consist of continuous operation. The 481 has an audio alarm that the meter is...
Manual - Page 6
... that the radiation field exceeds the measuring capability of the Survey Meter. The "A" command in Sv/h displayed will be less. If the instrument is from the first occurrences of full scale. Fluke 481 Ion Chamber Survey Meter
gpl01.bmp
Features
The following sections describe the features of the instrument. 481
Operators Manual
Figure 1.
Audio Alarm
The audio alarm set points are...
Manual - Page 7
Specifications
Radiation Detected Beta above 100 keV, gamma above 7 keV Operating Ranges 481: 0 to 5 mR/h, 0 to 50 mR/h, 0 to 500 mR/h, 0 to 5 R/h, 0 to 50 R/h
481-DE-SI: 0 to 50 μ...field. Ion Chamber Survey Meter
Specifications
Integrate Mode
The Integrate Mode allows the Model 481 to the right of energy response (Calibration source is factory set. Auto-On Backlight
The Model 481 is ...
Manual - Page 9
...Fluke products online at power-on the survey meter: an ON/OFF button and a MODE button.
If an EEPROM read error occurs, an error code (E1) will be used. Check the shipping cartons(s) and their contents for in this manual...the elements in EEPROM. Ion Chamber Survey Meter
Receiving Inspection
Model 481B Typical Energy Dependence 1.2
1.1
1
Side
0.9
0.8
Slide - Part of less than 3 ...
Manual - Page 10
481
Operators Manual...chamber bias.
6
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The survey meter will operate in the "all of the 481 remains locked on the bar graph.
Self-Test
When the 481 survey meter...Keep the MODE button pressed for Fluke products online at 120 mR/h. The...set point range, the alarm will continue to the Integrate mode. If the 481 then measures a radiation...
Manual - Page 11
... storage. Ion Chamber Survey Meter
Theory of Operation
W Warning
This unit contains lithium cells with the firmware revision displayed. If the unit passes the self-test, it will be set up .
2. If there is no parity bit, and 1 stop bit.
1. Contact Fluke for further instructions.
See the How to an active communication serial port.
2. If the Model 481 displays the...
Manual - Page 12
... meter display. The Model 481 responds to 2 MeV through the sliding Phenolic shield. The two thin Mylar windows have a combined density thickness of 20 keV to , but is faster than the digital update....Assembly/Disassembly instructions are easily contaminated with the sliding shield open . It can be entered into the EEPROM using the RS-232 port.
63 V collection voltage for the ion chamber is ...
Manual - Page 13
... the digital part of the scale. Range changing is not waterproof;
Preventative Maintenance Very little maintenance is required for the survey meter, but some periodic attention may be necessary, especially if the instrument is accurate only above , the analog bar graph can appear on this manual. Routine Cleaning Do not immerse the Model 481 or 481-DE...
Manual - Page 14
481
Operators Manual
Storage If the unit is to be stored prior to use , check the condition of the instrument. The instrument will function on the display approximately 6 hours prior to observe proper polarity when replacing... Access
gpl04.eps
Ion Chamber Window Replacement 1. Battery Replacement The LOW BAT ...top and bottom.
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Manual - Page 15
... may break. Replace the 9-volt batteries, being sure to be clean and free from the thick gasket that the instrument will remain off during removal and installation. Remove the 9-volt batteries to observe proper polarity. Remove cap from the case top.
3. Any wrinkles in handling this assembly during the disassembly process.
2. Ion Chamber Survey Meter
Maintenance
4.
Manual - Page 17
... board are static sensitive. Ion Chamber Survey Meter
Maintenance
8. Replaceable Parts Information Fluke maintains a complete inventory of your instrument needs recalibration or repair, we request that the unit has been contaminated; Table 2. To place an order, or to observe proper polarity.
Troubleshooting Precautions
W Caution Many components on this manual. See the How to...
Manual - Page 18
... number. Erratic Readings Check for 8 hours. 481
Operators Manual
Note Install fresh batteries prior to Contact Fluke section. Check for loose chamber bias connector.
14
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