1. Overhoff Technology Corporation
New Developments in
Tritium Monitors
September 2012 HPIC

2. Overhoff Technolgy Our core business: Design and manufacturing of
Tritium in Air monitors
with ionization chamber detectors
Portable
Fixed
September 2012 HPIC

3. Low Level Tritium in Air Gas Proportional Detectors
Overhoff Technolgy
Also:
Low Level Tritium in Air
Gas Proportional Detectors
Passive Samplers (Bubblers)
September 2012 HPIC

4. Additional Areas of Interest:
Overhoff Technolgy
Additional Areas of Interest:
Tritium in Water
Radon
Environmental Gamma
Data Acquisition
September 2012 HPIC

5. Overhoff Tritium monitors
Focus of Discussion
New Developments in
Overhoff Tritium monitors
Portable
400AC, 200SS, 2x200-LD, TriCair
Fixed
421-HTO; 321BWC, 593, Triathalon
September 2012 HPIC

6. 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 Calibration
Diagnostics; battery life, power supplies
Rechargeable NiMH Batteries
Constant flow; 2 LPM (5 volume changes/min)
September 2012 HPIC

7. Portable Model 200SS Based on the Model 200SB
Non-Gamma compensated, uses
both chambers for tritium measurement
Successor 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
September 2012 HPIC

8. 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.
September 2012 HPIC

9. 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.
September 2012 HPIC

10. Portable
Model 2x200-LD
September 2012 HPIC

11. Portable TriCair Convertible hose connections and traps to
measure Tritium or C14
Dual channel electrometer
T2 and C14 are selected with a front panel toggle switch
Measurement appears on one display.
September 2012 HPIC

12. Fixed Monitor Model 421-HTO Nuclear Power Plant Monitor (Heavy Water)
High Sensitivity Monitor in the
presence of high concentrations
of Noble Gases
Uses Nafion Dryer, only HTO
passes through
September 2012 HPIC

13. Fixed Monitor Model 321BWC Cart mounted system Is semi-portable
Dual chamber
gamma compensated
1” thick lead shielding
for additional gamma compensation
September 2012 HPIC

14. Fixed Monitor Model 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 screen
September 2012 HPIC

15. Tritium, C14, and Noble Gases
Fixed Monitor
Triathalon
Family of monitors with multiple
configurations for measurement of:
Tritium, C14, and Noble Gases
September 2012 HPIC

16. Thank You!
Q and A
September 2012 HPIC

17. Overhoff Technology Corporation 1160 U.S. Route 50
Questions and comments may be directed to:
Dell Williamson
Overhoff Technology Corporation
1160 U.S. Route 50
Milford, Ohio U.S.A.
Ph , Fx
September 2012 HPIC