The AMETEK RK Pneumatic Deadweight Tester is a primary standard that produces a pressure by applying force (weight set) over area (the ceramic ball and nozzle). The RK tester is NIST traceable and accurate to +0.05% using stainless steel weights calibrated to international standard gravity at 980.665 cm/sec2. +/-0.025% and +/-0.015% accuracy are also available.
The RK 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 RK tester features a cast-metal base with a quick-leveling 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.
Please call (732) 632-6400 to order fractional weights or carriers.
Specifications
FUNCTIONAL SPECIFICATIONS Model:.............................................................................. RK Type:..................................................... Pneumatic, ball type Pressure range:.. to 2,000 kPa / 300 psi (model dependent) Accuracy (12 months):.................................to ±0.015% rdg Repeatability:....................................................±0.005% rdg Temperatue coefficient: ±0.00167% of rdg/°C (@ on 23 °C) Increments (low - min):............ 1 psi, 0.01 kg/cm2, 0.01 bar, .......................................1 kPa, 4 inH2O, 10 cmH2O, 1 inHg 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) (specify when ordering) Weight sets:............................................ Single (as ordered) Pressure source:.................Nitrogen or instrument/shop air ......................................................(ISA quality standard 7.3) Supply pressure (max):................................31 bar / 450 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 .................. 1700 slh at 2000 kPa/60 scfh at 300 psi output Test connections:................................................... 1/8” NPT Weight material:......................................Stainless steel and ..................................aluminum (small incremental weights) Ball material:.............................................................Ceramic Engineering units:............................... psi, kg/cm2, bar, kPa, ............................................................. inH2O, cmH2O, inHg Cases:.......................................... 1 or 2 (model dependent)
PHYSICAL SPECIFICATIONS Connections:............................................ 1/4 in NPT female Weight: Tester only............................... 8.2 - 14.3 kg / 18 to 31.5 lbs Weights................................... 8.0 - 30 kg / 17.5 to 61.5 lbs Shipping dimensions (L x W xH): Tester.................38.1 x 24.1 x 20.3 cm / 15.0 x 9.5 x 8.0 in Weights............ 21.6 x 30.5 x 29.2 cm / 8.5 x 12.0 x 11.5 in Configuration:................................... Pneumatic deadweight Delivery:.............................Tester base, weight set, manual, ........................................... and NIST traceable certification
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