Mobilization
Item Number CD V-700
Extended Range Survey Meters
CD V-700 Radiological Survey Meters
AKA Geiger Counters
Extended Range Modification
The extended range CD V-700 measures gamma radiation up to 500 milliroentgens per hour over three
scales. It uses a special Geiger-Müller tube to detect moderate and high energy beta radiation, and gamma
radiation down to low energies. The probe operates at 900 volts which is essentially the center of a plateau
extending from about 850 volts to 920 volts. The probe has a beta shield that can twist to open or close.
The Geiger-Müller tubes are halogen quenched, and mounted in a probe connected to a 36" cable.
Instrument accuracy on any of its three ranges is within ± 10% of the true dose rate from Cobalt 60 gamma
radiation. This accuracy is maintained throughout a temperature range of -20° F to +125° F, and
at altitudes from sea level to 25,000 feet. These units were part of the "B2" Aerial Survey Meter Kit.
The entire CD V-700 series of radiological survey meters use a meter for visual indication and a
4000 ohm headset for audible detection of activity.
Battery life is 100 hours of continuous use. This is based on the carbon/zinc batteries of the early
1960's, newer alkaline batteries should do much better.
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Complete Set Victoreen CD V-700 Model 6A Includes: Shoulder Strap, Headset & Victoreen CD V-700 Model 6A Manual Serial Number: 33203 |
Complete Set Victoreen CD V-700 Model 6B Includes: Shoulder Strap, Headset & Victoreen CD V-700 Model 6B Manual Serial Number: 125317 |
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Left Side View Victoreen CD V-700 Model 6A Extended Range Model |
Left Side View Victoreen CD V-700 Model 6B Extended Range Model |
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Right Side View Victoreen CD V-700 Model 6A Extended Range Model |
Right Side View Victoreen CD V-700 Model 6B Extended Range Model |
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Close-up of Range Overlay.
The range of this model is 10x that of a standard model.
Add a sticker...change a tube.
These Geiger-Müller tubes and overlays were made by EON Corporation.
Click photo for larger version.
Geiger-Müller Tubes
Top: Standard CD V-700 "6993" Geiger-Müller Tube
Bottom: Extended Range CD V-700 Geiger-Müller Tube
The smaller chamber reduces the sensitivity by a factor of 10.
Click photo for larger version.
Above tube comparison from a Lionel Advertisement.
