Deadweight scales are a primary standard. Pressure balances are the most precise instruments for calibrating all types of pressure gauges; electronic or mechanical.
Deadweight scales use the primary physical principle of pressure; The direct measurement of pressure (p = F/A), as well as the use of high-quality materials, allows a very low measurement uncertainty, in combination with excellent long-term stability, generally five years (recommendation according to the German calibration association DKD/DAkkS). In this way, the pressure balance has been used for years in factory and industry calibration laboratories, in national institutes and in research centers.
Flexilatina from Colombia has two WIKA – MENSOR brand deadlift scales of excellent quality proven by the experience of the manufacturer and support of WIKA; the CPB5000 model.
Thanks to the integrated pressure generation and the purely mechanical measuring principle, the CPB5000 is ideal for use in maintenance, calibration of digital and electronic standards and in general technical service.
How do they work?
Pressure is defined as the ratio between the normal component of the force on a surface and the area of said surface. The core of the CPB5000 is therefore a highly precisely manufactured piston-cylinder system, which is loaded with masses to generate the different test points.
Weight loading is proportional to the desired pressure and is achieved by optimally graduated weight plates. These weight plates are manufactured as standard according to the standard earth acceleration of 9.80665 m/s², but can also be adapted to your specific application site and calibrated according to DKD/DAkkS.
Features and advantages of calibrating your digital standards with deadweight scales
- Total measurement uncertainty up to 0.008% of the measured value.
- Factory calibration included According to DKD/DAkkS, traceable to national standards.
- High long-term stability with recommended recalibration cycle after five years.
- Stainless steel and aluminum weight plates, possibility of adaptation to local terrestrial acceleration.
- F1 type antimagnetic weight sets to achieve the highest precision and accuracy when calibrating a measurement point
- Quick and safe replacement of the piston-cylinder system to change the measurement range using the patented ConTect quick clamping system.
- Primary standard for industrial and calibration laboratories for the checking, adjustment and calibration of pressure measuring instruments.
- Direct measurement of pressure, as defined as a ratio of force to area, and the use of high-quality materials result in small measurement uncertainties.
- Range from vacuum to 10,000 psi.
Considerations to take into account when choosing between a digital calibrator and a deadweight scale to calibrate your equipment
- Dead weight scales are systems that physically generate a known pressure in addition to the calibration.
- Deadweight scales are considered primary standards because they are based solely on physical parameters and the pressure measurement is not transmitted to an electronic or analog signal.
- Digital pressure standards are secondary standards since the pressure is translated into an electronic signal using a transducer.
- Due to the high accuracy and reliability of deadweight scales, digital pressure standards are calibrated with this type of scale.
- Deadweight scales, because they are physical standards, can be tailored to cover wide pressure ranges using different masses and effective area components.
- Digital pressure standards have limited ranges due to the sensor used in their manufacture. Therefore, multiple devices are needed to cover wide pressure ranges.