The P3000 Series is the culmination of over 50 years experience in the production and design of primary pressure standards. With features designed to improve accuracy and performance, increase reliability and simplify operation these deadweight testers can be used to calibrate virtually any pressure sensing device, including transducers, transmitters, gauges or pressure switches.
Each instrument is supplied with a detachable lid that makes it neat, compact and easily portable. The Masses are stored in a high-quality case with a self-locking mechanism to protect them during transit. All units are provided with an accredited calibration certificate, M14X1.5, M20X1.5, 1/8, 1/4, 3/8, and 1/2 NPT and BSP female adaptors, operating fluid (where applicable) and
The piston/cylinder assemblies are manufactured to the very highest standards and are supplied with accredited calibration reports with stated instrumental measurement uncertainties.
Deadweight testers are the primary standard for pressure measurements. Utilizing the well proven piston-gauge system consisting of a vertically mounted, precision lapped piston and cylinder assembly, accurately calibrated masses (Force) are loaded on the piston (Area), which rises freely within its cylinder. These masses balance the upward force created by the pressure within the system.
There are four basic variations in the pneumatic offering; single pressure, single vacuum, dual vacuum and pressure, and oil-lubricated pneumatically driven high-pressure models. Pressure or vacuum is generated by an external source or an optional built-in hand pump (standard on the lower pressure models). The hand pump option is not available on instruments above 500 psi
The piston/cylinder assembly is the heart of each deadweight tester. They are manufactured from materials that provide stability, durability, and low thermal coefficients and distortion. Our experience and knowledge of piston/cylinder production and calibration ensure the precision and performance required for today’s demanding calibration requirements.
Standard masses are series 3 non-magnetic austenitic stainless steel. Each mass is marked with the serial number of the instrument and the nominal pressure value relative to the higher low-pressure piston, when applicable. The masses for the vacuum ranges and the optional fine increment masses are stainless steel and/or aluminum.
Gravity varies significantly with geographic allocation and this variation has a direct effect on the force of the weights and the accuracy of the deadweight tester. Each instrument can be calibrated to local gravity at no extra cost. If unspecified, instruments will be calibrated to Standard Gravity at 980.665 cm/s2.