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Installation
The MVS manual low-emission sampler can be supported directly by the top 1/4 in (or optional 3/4 or 1/2 in) compression
connection or mounted to a panel using the bracket provided. When installing the valve assembly, verify that adequate space has
been provided for the removal of the bottle from the shroud or bottle adapter.
The sample inlet connection is located at the top of the valve. The vent connection is located on the left side of the valve assembly.
This line should be directed to a charcoal canister, flare or other sub-atmospheric region for collection and treatment of sample
vapors. Line and fitting size from the isolation valve to the purge port should be minimized to prevent the formation of
"dead legs".
Flare / Vent
CV
7 1/2" (190) 2 oz (60 ml) Bottle
8 1/16" (205) 4 oz (125 ml) Bottle
9 1/16" (240) 8 oz (250 ml) Bottle
10 3/8" (264) 16 oz (500 ml) Bottle
12" (305) 32 oz (1000 ml) Bottle
Operation
When not actually sampling, the valve should be in the off position with the valve handle in the vertical position.
Prior to initiating sampling, insert the bottle inside the shroud until the bottle cap bottoms against the keeper nut. Secure the
bottle within the shroud using the bottle support bracket. Sample flow enters the valve at the top connection. Gradually open the
valve by lowering the valve handle. The valve stop provided should be adjusted so the bottle fills slowly with minimum turbulence
or frothing. After the desired sample is obtained, close the valve. Allow a few seconds for vapors to exit the vent connection before
removing the bottle from the shroud.
Before initially sampling a high pressure fluid, it is advisable to turn the valve stop in as far as possible. This will prevent the fluid
from spurting out due to the valve being open too far. While fluid is flowing, the screw can be backed out slowly while the valve is
opened to establish the desired fill rate.
Please refer to the job-specific drawings of the instruction placard for specific operating instructions.
Sentry MVS Sampler
Sample Inlet
Single Block
Needle Sample
Valve
Sample
Bottle
1 13/16" [45]
Flare/Vent
Spring-Loaded
Dead Man's
Throttling Valve
Handle
2 3/4" [70]
4 3/8" [111]
Sample Inlet
5/8" [16]
2 X
Ø 3/16"
[4]
Mounting Holes
7
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