Ametek PK II Deadweight Tester

Key Features:

  • Accuracy Up to +0.015% of Indicated Reading
  • Pressure Range 4 H2O to 30 PSIG
  • Economical Self-Regulating Pressure Standard
  • Exceptional Performance and Safety Built-In with:
          - Floating Ball Operation
          - Self Regulating
          - Rugged Ceramic Measuring Ball
          - Non-Contaminating Test Fluid
          - Closed Cover Operation for Outdoor use
          - Ball Valves for Inlet and Outlet
          - Interchangeable Weights
  • NIST Traceable Calibration Included
Product Options:

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$8,570.00

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     The AMETEK PK II Pneumatic Deadweight Tester is a primary standard that produces a pressure by applying force (weight set) over area (the ceramic ball and nozzle). The PK II tester is NIST traceable and accurate to +/- 0.015% using stainless steel weights calibrated to international standard gravity at 980.665cm/sec2.

     The PK II tester is self-regulating with accuracy independent of the operator. The tester utilizes a virtually frictionless ceramic ball floating on a layer of air within a stainless steel cylinder. The PK II tester features a cast-metal base with a quickleveling system for field or lab setup. The unit may also be mounted to an optional tripod for more convenient setup. The tester may be operated with the cover opened or closed. Weights are located in foam-protective slots in the case.

Special Calibrations/Local Gravity 

The PK II tester are optionally available with an accuracy of +0.015%. Calibration to your local gravity is available for all stainless steel models. Please provide your gravity when ordering.

Gas Industry Models 

Standard testers in inches or cm of H2O are calibrated reference water columns at 20 Deg C (68 Deg F) per ISA recommended practices. Calibration to reference water columns at 60 Deg F per AGA standards is available. Contact us at (732) 632-6400 for details.

Floating Ball  The PK II tester is a floating ball-type, pneumatic deadweight tester with many features designed to improve performance and safe operation when used according to the instruments operating instructions. Listed are some of the inherent features of the AMETEK PK II Deadweight Tester.  While in operation, the PK II 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 instruments 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.

Rugged Ceramic Measuring Ball 

The floating ball/piston is manufactured from aluminum oxide ceramic - a material with near-diamond hardness. The ball, unlike steel and carbinde pistons, may be dropped on hard surfaces without damage.

Quick Setup and Operation  

The setup for the PK II tester is completed by simply connecting two tubes 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 testers operational requirements.

Non-Contaminating Test Fluid  

The instruments test fluid is Nitrogen or instrument quality air complying with the ISA Standard S7.3. This fluid is non-contaminating to virtually all processes, thus eliminating the need to clean instruments after calibration and before use.

 

Tripod Mounting  

The PK II tester is designed for laboratory and portable use in the field. The instrument includes built-in tripod mounts. A tripod may be ordered separately.

 

Closed Cover Operation  

The PK II tester is designed to operate with the cover closed, thus eliminating the effects of wind during field operation.

 

Ball Valves  

AMETEK floating ball testers, such as the PK II 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.

 

Certification of Accuracy and Traceability  

A Certfication of Accuracy and Traceability to NIST is included with every AMETEK floating ball-type deadweight tester. An optional Certification of Accuracy with area, mass and intrinsic correction factors is available.


Standard Delivery:

  • • PK Tester
  • • Stainless Steel Weights, Range Specific
  • • Hard Carry Case (Tester built in)
  • • NIST Traceable Calibration Certificate (Data Optional)\
  • • User manual

Please call (732) 632-6400 to order fractional weights or carriers.

FUNCTIONAL SPECIFICATIONS
Model:............................................................................PK II
Type:..................................................... Pneumatic, ball type
Pressure range:........... 200 kPa / 30 psi (model dependent)
Accuracy (12 months):................................to ±0.015% rdg*
Repeatability:....................................................±0.005% rdg
Temperatue coefficient:........±0.00167% of rdg/°C (@23°C)
Minimum measurements:............. 1 psi, 10 g/cm2, 10 mbar,
..................................1 kPa, 4 inH2O, 10 cmH2O, 10 mmHg
Increments (small): Small incremental weight sets available
Gravity:.......................9.80665 m/s2 (international standard)
...............................or Local gravity (specify when ordering)
Water column temp ref:...................... 20°C (ISA) (standard)
........................................................ or 60°F (AGA) (optional)
Weight sets:................................. Single (model dependent)
Note: Extra weight sets may be ordered
Pressure source:.................Nitrogen or instrument/shop air
......................................................(ISA quality standard 7.3)
Supply pressure (max):...............................6.9 bar / 100 psi
Supply pressure (min):..................................2.1 bar / 30 psi
.................................... or 150% of desired output pressure
Flow rate:.............. 28 slh at 1 kPa/1 scfh at 0,15 psi output
.......................... 310 slh at 200 kPa/1 scfh at 20 psi output
Test connections:................................................... 1/4” NPT
Weight material:......................................Stainless steel and
..................................aluminum (small incremental weights)
Ball material:.............................................................Ceramic
Engineering units:.......................psi, g/cm2, mbar, bar, kPa,
.......................................................... inH2O, cmH2O, mmHg
Cases:................................................................................. 1
Notes: Deadweight tester and deadweight gauge accuracy is
expressed as “Percent of Indicated Pressure”. A 1,000 psi tester
with an accuracy of ±0.01% of indicated pressure will have an
allowable error of 0.1 psi at 10 psi, ±0.1 psi at 100 psi and ±1.0
psi at 1,000 psi. Generally, deadweight testers are used only in
the upper 90% of the range.

PHYSICAL SPECIFICATIONS
Tester size (L x W x H):
Small:......................17.8 x 26.7 x 38.1 cm / 7 x 10.5 x 15 in
Large:.....................22.9 x 36.8 x 38.1 cm / 9 x 14.5 x 15 in
Weight:.......................................................to 12.7 kg / 28 lb
Configuration:................................... Pneumatic deadweight
Delivery:.............................Tester base, weight set, manual,
........................................... and NIST traceable certification

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