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Proprietary
sample probe allows accurate samples in a wide variety
of environments.
Click
on image to enlarge
TFE
sample probe for reactive environments. Other customizations
are available.
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on image to enlarge
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- Panels
installed without tools, using 1/4-turn fasteners.
- Can sample
from pressurized lines.
- Higher
initial velocity than peristaltic and vacuum type samplers.
- Standard
lift exceeding 40’ — customized lift to 80’.
- Maintenance-Free
Design for long term, trouble-Free operation.
- All BVS
Automatic samplers meet ASTM D3370-76, Page 29.1, Recommended methods
for proper sampling.
- All BVS
Automatic samplers carry a “Two Year Warranty” on parts
and labor.
- Samplers
are available as NEMA I, NEMA IV and NEMA XII. Other styles available
to meet your individual specification or requirements.
- BVS samplers
do not use suction as used by peristaltic or vacuum type samplers as
this concept changes the solubility of the liquid by disturbing the
gas/liquid balance. For this reason, suction type samplers should not
be used when measurements to be made concern dissolved gases such as
oxygen or carbon dioxide.
- U.S.A.
Made in Honey Brook, Pennsylvania.
- Fully
ventilated and heated cabinets with control thermostats.
- Free technical
advice is always available.
Pumps
Employing suction…
Bulletin:
The ASTM addresses "taking the sample" with this statement...
"Because pumps employing suction principles disturb the gas-liquid
balance, use a submersible-type pump for pumping samples from open bodies
of water whenever the measurements to be made concern dissolved gases
such as oxygen or carbon dioxide.
(ASTM D3370-76 P 29.1)
All BVS liquid samplers utilize the flooded-suction concept of operation.
With the sampling probe or pump submerged in the liquid to be sampled,
liquid enters the sampling device by gravity, thereby giving a true representative
sample of the liquid at that particular strata. The use of peristaltic
or vacuum pumps, the suction concept of operation, does not give a true
representative sample of the liquid that is being sampled. The use of
suction changes the solubility of the sample by changing the gas/liquid
balance. This change in solubility makes it impossible to get accurate
measurements of dissolved gases.
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