Fluke 07-494 User Manual
Victoreen 07-494
Wide-Range Digital kVp Meter
Operators Manual
December 2006
Manual No. 168001 Rev. 4
©2006 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies
Fluke Biomedical
Radiation Management Services
6045 Cochran Road
Cleveland, Ohio 44139
440.498.2564
www.flukebiomedical.com/rms
Table of Contents
Section 1: General Information................................................................................... 1-1
1.1 Product Description ..................................................................................... 1-1
1.2 Specifications............................................................................................... 1-2
Section 2: Getting Started........................................................................................... 2-1
2.1 Receiving Inspection.................................................................................... 2-1
2.2 Storage........................................................................................................2-1
2.3 Routine Cleaning......................................................................................... 2-1
2.4 Indicators and Controls................................................................................ 2-2
Section 3: Theory and Applications........................................................................... 3-1
3.1 General........................................................................................................ 3-1
3.2 Filtration Effects........................................................................................... 3-1
3.3 Waveform Effects ........................................................................................ 3-2
3.4 Focus to Detector Distance (FDD)............................................................... 3-2
3.5 mAs Requirements...................................................................................... 3-2
3.6 Detector Positioning..................................................................................... 3-3
3.7 Low Battery.................................................................................................. 3-3
3.8 Applications ................................................................................................. 3-3
Section 4: Operation.................................................................................................... 4-1
4.1 Making a Measurement ............................................................................... 4-1
4.2 Interpreting Front Panel Warning Indications............................................... 4-2
4.3 Viewing the Waveform Output..................................................................... 4-3
Section 5: Calibration and Adjustments.................................................................... 5-1
5.1 Low Battery Threshold Adjustment.............................................................. 5-1
5.2 End of Shot Adjustment............................................................................... 5-3
5.3 50-90 kVp Calibration .................................................................................. 5-3
5.4 80-150 kVp Calibration ................................................................................ 5-3
Section 6: Maintenance and Troubleshooting........................................................... 6-1
6.1 Battery Replacement ................................................................................... 6-1
6.2 Accessing the Circuit Boards....................................................................... 6-1
6.3 Performance Verification (Calibration Constancy)....................................... 6-2
6.4 Verifying Supply Voltages............................................................................ 6-3
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General Information
Product Description
1
Section 1
General Information
1.1 Product Description
The Model 07-494 Wide-Range Digital kVp Meter (Figure 1-1) is a portable, battery operated unit which
non-invasively measures the effective peak potential applied to a tungsten target diagnostic x-ray tube. It
uses two differentially filtered x-ray detectors whose ratio of integrated outputs is calibrated over the
ranges of 50 to 90 kVp and 80 to 150 kVp. The desired range is selected using the range selector on the
top of the unit.
Figure 1-1. Model 07-494 Wide-Range Digital kVp Meter
1-1
Victoreen 07-494
Operators Manual
1.2 Specifications
Range
Resolution
Accuracy
mAs Requirements
Reproducibility
Filtration Effects
Calibration Frequency
Battery
Display
LED Indicators
Controls
Low: 50 kVp to 90 kVp
High: 80 kVp to 150 kVp
0.1 kVp
± 3% or 3 kV, whichever is greater (tungsten target x-ray tube
with 4.5 mm Al total filtration)
See Figure 1-2
± 1 kV or 1%, whichever is greater
50 kVp - 90 kVp range: less than 3.5% with 5.3 mm aluminum
added
80 kVp – 150 kVp range: less than 3% with 8 mm aluminum
added
One (1) year
Type: 9 V alkaline, NEDA 1604 (IEC 6F22) or alkaline equivalent
Life: 75 hr. typical
3 ½ digit, 0.5" high LCD with LO BAT indicator;
Below Range kVp: Flashing middle decimal point
Above Range kVp: Flashing left decimal point
Above Range mAs: Flashing right decimal point
Below Range mAs: Flashing right decimal point and 00.0
display
Auto Reset: New exposure detected, last kVp reading cleared
Range Fault: Range select sliding filter not properly engaged
Power Switch: ON/OFF
Phase Selection Switch: Single phase/3 phase
Filter Range Selection Switch: 50 to 90 kVp or 80 to 150 kVp
Connectors
Dimensions
(H x W x D)
Weight
Environmental Specifications Temperature:
1-2
BNC connector for waveform output
2.5 in. x 8 in. x 6 in.
(6.4 cm x 20.3 cm x 15.2 cm)
2.4 lbs. (1.1 kg)
Operating: 59 to 104° F (15 to 40° C)
Storage: - 0 to 122° F (-18 to +55° C)
Relative Humidity:
Operating: 0 to 90% non-condensing
Storage: 0 to 90% non-condensing
Victoreen 07-494
Operators Manual
.
mA
Figure 1-2. mAs vs. kVp, Minimum Requirements (Typical Single Phase X-ray Unit)
kVp
1-2
Victoreen 07-494
Operators Manual
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Getting Started
Receiving Inspection
Section 2
Getting Started
2.1 Receiving Inspection
Upon receipt of the instrument:
1. Inspect the carton(s) and contents for damage. If damage is evident, file a claim with the carrier and
contact Fluke Biomedical, Radiation Management Services at 440.248.9300.
2. Remove the contents from the packing material.
3. Verify that all items listed on the packing list have been received and are in good condition. The
following items are shipped with the Model 07-494 kVp Meter
a. Part No.168005, Model 07-494 kVp III.
b. Part No.16-29, 9 V Alkaline Battery
c. Part No.168001 Instruction Manual
d. Part No. 010023 Registration Card
If any of the listed items are missing or damaged,
notify Fluke Biomedical at 440.248.9300.
2
2.2 Storage
If necessary to store the kVp meter prior to use, pack it in the original container if possible. Be sure the
storage area is free of corrosive materials, vibrations, and fluctuations in temperature and humidity. Also
be sure the environmental specifications (refer to Section 1-2, Specifications) are not exceeded.
2.3 Routine Cleaning
Do not immerse the Model 07-494 Wide-Range
Digital kVp Meter. This unit is not waterproof. Liquid
could damage the circuits. The unit should be kept
clean and free of dirt and contamination. The unit
may be cleaned by wiping with a damp cloth using
any commercially available cleaning or
decontaminating agent.
2-1
Victoreen 07-494
Operators Manual
2.4 Indicators and Controls
Top Panel
The top panel (Figure 2-1) includes brief operating instructions, beam center indication, display guide for
warning indicators A through D, and the range selector switch.
The range selector switch allows the operator to select the appropriate kVp range for the measurement.
When the range selector is set to 80 - 150 kVp, a second filter pair is positioned above the photodiodes
and a separate calibration is applied to the measurement circuit.
Front Panel
Refer to Figure 2-2 for front panel layout.
Numeric Readout: A 3-½ digit LCD display indicates the kVp value, provides warning status (flashing
decimal points), and indicates low battery voltage (LO BAT). Warning indications are listed on the top
panel and discussed further in Section 4, Operation.
Auto Reset LED: The auto reset LED is lit whenever the kVp Meter detects an x-radiation. The LED will
be on for 0.5 seconds or for the duration of the exposure, whichever is greater. The previous reading is
cleared when the LED turns on.
Range Fault LED: The range fault LED is lit whenever the range selector is between ranges or not
properly engaged.
Power Switch (ON/OFF): The power switch is an alternate action switch used to turn the instrument on or
off. The LCD readout is active when power is applied.
Phase Switch (1φ-3φ). The phase switch allows the operator to select either single phase (1φ) or three-
phase (3φ) operation. When the phase switch is in the 1φ position, the displayed value corresponds to a
single-phase waveform produced by a single-phase x-ray machine. When the phase switch is in the 3φ
position, the displayed value is the single phase calibrated output multiplied by a constant to compensate
for differences between 3 phase (or DC) and single phase waveforms.
Figure 2-1. Top Panel
2-2
Getting Started
Indicators and Controls
Figure 2-2. Front Panel
Rear Panel
Refer to Figure 2-3 for rear panel layout.
Battery Access Cover: The battery access cover is located on the rear panel. Refer to Section 5,
Maintenance for battery replacement procedures.
Be sure the unit is turned OFF before removing the
batteries.
BNC Connector: A BNC connector, located on the rear panel, provides a signal from the radiation
detection diodes. The signal can be observed on an oscilloscope during an exposure. However, the
signal lasts only as long as the exposure. Therefore, a storage scope or camera is required to view the
signal for extended periods of time.
2
Figure 2-3. Rear Panel
Scope
CAUTION: Turn off power switch
before replacing battery. Use
MN16404 or equivalent alkaline
2-3
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