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HYDRAULIC DEADWEIGHT TESTERS
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| Achieve the highest possible
accuracy of pressure generation and measurement |
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Superior to
digital systems, AMETEK testers offer excellent performance
and long term stability and they feature a proven design that
will deliver years of trouble-free operation. |
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| Applications |
- Repeatability better than ±0.005% of reading
- Accuracy up to ±0.025% of reading and even better using
a DADT converter
- Dual volume control valve delivers high volume to
rapidly build pressure
- Vernier adjustment for fine adjustment of pump pressure
- Re-entrant type piston and cylinder assembly maintains
accuracy as test pressure increases and improves the spin
and float times
- Single and dual-column versions. Conversion kits
available
- Enclosed piston/cylinder assembly for safe operation
- Available engineering units: psi, bar, kPa,
kg/cm2
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| AMETEK applied
technology: |
Overhung weight carriers - minimizes side thrust on the
measuring piston and cylinder assembly resulting in improved
measurement accuracy.
Re-entrant piston/cylinder - This
design reduces the rate of fluid leakage, thus increasing the
time available for calibration of instruments.
Dual volume hand pump - This allows the pump to deliver
a high volume in order to rapidly fill systems and build
pressure. The low volume permits easy pumping at high
pressures and a more gradual approach to the point of pressure
calibration.
Positive overpressure protection - The vertical movement of the measuring piston assembly is restricted by a positive stop. This will prevent the piston from damage caused by accidental removal of the weights while pressurized. These stops are rated at the maximum tester pressure. |
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T & R Deadweight tester
series |
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These high accuracy
deadweight testers are ideal for laboratory or field use. The
type T tester uses distilled water or fluid compatible with
300 series stainless steel and MONEL (including AAA tester
oil). For applications up to 15,000 psi (1,000 bar). The type
R tester uses AAA tester oil and may be used on applications
up to 10,000 psi (700 bar). An optional dual piston lets you
interchange piston/cylinder assemblies to extend the pressure
measurement range using the same weight set. A kit is
available for converting to a dual column tester. |
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T & R Dual column
series |
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Separate columns are
provided for high and low pressure measuring piston/ cylinder
assemblies. Range changes are achieved using a built-in
crossover valve that allows three-point calibrations to be
performed in seconds. It is not necessary to purchase a second
set of weights. Fill fluids and pressure ranges are the same
as type T and R single column testers. |
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HydraLite (HL) portable
deadweight tester |
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This extremely
compact, self-contained portable tester is designed for
pressure ranges from 10-200 psi (1-15 bar) up to 50-3,000 psi
(5-225 bar). Accurate to ±0.05% of reading, the unit features
an easy-to-use screw pump with ratcheting handle and
re-entrant type piston/cylinder assembly. This helps maintain
accuracy as the test pressure increases. Weights and piston
assemblies are interchangeable. The unit's AAA tester oil may
be easily inspected through the transparent reservoir. Compact
design in only 9 x 9 x 10 in (23 x 23 x 24.5 cm). Tripod
option available for field applications. |
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| PRODUCT INFORMATION
(Specification sheets) |
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