|
Features |
|
Functions |
Details |
|
Floating ball |
While in operation, the RK-50 tester’s ball
and weights float freely, supported only by a thin film of
air which is virtually frictionless. This eliminates the
necessity to rotate the weights during testing and allows
the user to concentrate on the instrument calibration. |
|
Self-Regulating |
The instrument’s built-in flow regulator
automatically adjusts the input air flow to maintain the
ball and weights in a float position. The regulator also
compensates for variations in pressure from the air supply.
These features eliminate the necessity of having to
continually adjust the supply during the test and provides
for an easy up and down scale calibration. |
|
Overhung Weight
Carriers |
Another feature of the RK
deadweight tester is the way that the weights are positioned
on the carrier. M&G utilizes an overhung weight carrier
design. This design employs a tube carrier that is
positioned over the column and onto the ceramic ball. The
center of gravity for the stack of weights is lowered,
reducing side thrust and friction; which lengthens the life
of the ball/nozzle and carrier. This also improves
measurement accuracy. |
|
Closed Cover Operation |
The RK tester is designed to
operate with the cover closed, thus eliminating the effects
of wind during field operation. However, Use of the large
diameter weights is not possible with the cover closed. |
|
Rugged Ceramic
Measuring Ball |
The floating ball is manufactured from aluminum oxide ceramic - a material with near-diamond hardness. The ball, unlike steel and carbide pistons, may be dropped on hard surfaces without damage. |
|
Quick Setup
and Operation |
The setup for the RK tester
is completed by simply connecting two tubes,- one for the
supply and one for the unit-under-test, leveling the RK, and
adding the appropriate weights. Operation is fast and
efficient with no valves to adjust and no regulation needed
between set points. Pressure regulators are not required if
the air supply is within the tester’s operational
requirements. |
|
Small incremental weight sets |
Small incremental weight sets
are available to provide fractional output pressures. These
are available for the RK deadweight tester in psi, bar, kPa,
kg/cm2, inH2O and cmH2O |
|
Designed for field
or lab use |
The HK tester is designed for
precision and is accurate enough for lab use. However, the
construction is rugged enough to allow for reliable field
operation as well. The instrument includes a built-in
tripod mount. A tripod may be ordered separately. |
|
Ball Valves |
AMETEK floating ball testers, such as the
RK50 tester, incorporate multi-position ball valves for
both the inlet and outlet valve connections. These ensure
trouble free operation that is both fast and efficient. |
|
Easy Leveling |
AMETEK floating ball testers incorporate
a bulls-eye level for reference when preparing the unit for
use. The tester also employs a 3-leg leveling system which
is more convenient and is superior to a 4-leg system. |
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