Download - Overhoff Technology Corporation New Developments in Tritium Monitors 1September 2012 HPIC
Overhoff Technology Overhoff Technology CorporationCorporation
New Developments New Developments inin
Tritium MonitorsTritium Monitors
1September 2012 HPIC
Overhoff Technolgy
Our core business:
Design and manufacturing ofTritium in Air monitors
with ionization chamber detectors
• Portable• Fixed
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Overhoff Technolgy
Also:
Low Level Tritium in Air
• Gas Proportional Detectors• Passive Samplers (Bubblers)
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Overhoff Technolgy
Additional Areas of Interest:
• Tritium in Water• Radon
• Environmental Gamma• Data Acquisition
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Focus of Discussion
New Developments inOverhoff Tritium monitors
• Portable400AC, 200SS, 2x200-LD, TriCair
• Fixed421-HTO; 321BWC, 593, Triathalon
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Portable
Model 400AC
• MDA of about 2 Ci/m3 • Immune to radon• Dual channel Electrometer• Quad chamber for total Gamma
compensation• Communication to PC via RS-232;
Automatic Gamma CalibrationDiagnostics; battery life, power
supplies• Rechargeable NiMH Batteries• Constant flow; 2 LPM (5 volume
changes/min)
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Portable
Model 200SS
• Based on the Model 200SBNon-Gamma compensated, usesboth chambers for tritium measurementSuccessor to the Model 394 and AN/PDR-74
• 400cc volume; MDA of 2-3 Ci/m3
• Radon suppression• Fast response, 10 seconds to 90% of final
reading• Low cost
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Portable
Model 2x200-LD
can be configured as a “sniffer” to provide real-time indication of the T2
and T2O concentrations which allow
the user to quickly identify the source of leakage of tritium from
containers.8September 2012 HPIC
Portable
Model 2x200-LD
• Dual channel electrometer
• T2 and T2O, are selected with a front panel toggle switch
• Measurement appears on a single digital display.
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T2O + T2 SAMPLE IN
HEPA FILTER
T2 OUTDRIERITE
PUMP
T 2O/T 2
MODEL 2x200AS CONFIGURED ON DEMO UNIT
MAT2O/T2
Switch 2
1
+
+
-
-T2
T2O
Model 2x200-LD
Portable
Portable
TriCair
• Convertible hose connections and traps tomeasure Tritium or C14
• Dual channel electrometer
• T2 and C14 are selected with a front panel toggle switch
• Measurement appears on one display. 11September 2012 HPIC
Fixed MonitorModel 421-HTO
Nuclear Power Plant Monitor
(Heavy Water)
High Sensitivity Monitor in the
presence of high concentrations
of Noble Gases
Uses Nafion Dryer, only HTOpasses through
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Fixed MonitorModel 321BWC
Cart mounted systemIs semi-portable
Dual chambergamma compensated
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1” thick lead shieldingfor additional gamma compensation
Fixed MonitorModel 593 Revamped in
2012
Gas proportional detectors, MDA is 1 kBq/m3
Measures T2 and T2O, Oxidizer included
Noble gas compensation
Updated preamplifier
Single Board Computer
LCD touch screen14September 2012 HPIC
Fixed MonitorTriathalon
Family of monitors with multipleconfigurations for measurement of:
Tritium, C14, and Noble Gases
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Thank You!
Q and A
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Questions and comments may be directed to:
Dell Williamson
Overhoff Technology Corporation
1160 U.S. Route 50
Milford, Ohio 45150 U.S.A.
Ph 513-248-2400, Fx 513-248-2402