Method and apparatus for monitoring the flow of mercury in a system
Patent
·
OSTI ID:866449
- Belmont, MA
An apparatus and method for monitoring the flow of mercury in a system. The equipment enables the entrainment of the mercury in a carrier gas e.g., an inert gas, which passes as mercury vapor between a pair of optically transparent windows. The attenuation of the emission is indicative of the quantity of mercury (and its isotopes) in the system. A 253.7 nm light is shone through one of the windows and the unabsorbed light is detected through the other window. The absorption of the 253.7 nm light is thereby measured whereby the quantity of mercury passing between the windows can be determined. The apparatus includes an in-line sensor for measuring the quantity of mercury. It includes a conduit together with a pair of apertures disposed in a face to face relationship and arranged on opposite sides of the conduit. A pair of optically transparent windows are disposed upon a pair of viewing tubes. A portion of each of the tubes is disposed inside of the conduit and within each of the apertures. The two windows are disposed in a face to face relationship on the ends of the viewing tubes and the entire assembly is hermetically sealed from the atmosphere whereby when 253.7 nm ultraviolet light is shone through one of the windows and detected through the other, the quantity of mercury which is passing by can be continuously monitored due to absorption which is indicated by attenuation of the amplitude of the observed emission.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
- DOE Contract Number:
- AC03-76SF00098
- Assignee:
- GTE Products Corporation (Danvers, MA)
- Patent Number(s):
- US 4713547
- OSTI ID:
- 866449
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/250/
253
absorbed light
absorption
amplitude
apertures
apparatus
arranged
assembly
atmosphere
attenuation
carrier
carrier gas
conduit
continuously
continuously monitor
continuously monitored
detected
determined
disposed
disposed inside
due
emission
enables
entire
entire assembly
entrainment
equipment
flow
gas
hermetically
hermetically seal
hermetically sealed
in-line
indicated
indicative
inert
inert gas
inside
isotopes
light
measured
measuring
mercury
mercury vapor
method
monitored
monitoring
nm
nm light
observed
opposite
optically
optically transparent
pair
passes
passing
portion
quantity
relationship
sealed
sensor
shone
transparent
transparent window
tubes
ultraviolet
ultraviolet light
unabsorbed
vapor
viewing
violet light
whereby
window
windows
253
absorbed light
absorption
amplitude
apertures
apparatus
arranged
assembly
atmosphere
attenuation
carrier
carrier gas
conduit
continuously
continuously monitor
continuously monitored
detected
determined
disposed
disposed inside
due
emission
enables
entire
entire assembly
entrainment
equipment
flow
gas
hermetically
hermetically seal
hermetically sealed
in-line
indicated
indicative
inert
inert gas
inside
isotopes
light
measured
measuring
mercury
mercury vapor
method
monitored
monitoring
nm
nm light
observed
opposite
optically
optically transparent
pair
passes
passing
portion
quantity
relationship
sealed
sensor
shone
transparent
transparent window
tubes
ultraviolet
ultraviolet light
unabsorbed
vapor
viewing
violet light
whereby
window
windows