Dead weight testers (data sheet 10 317)

 
  • High-precision primary standard (comparison standard) 
  • Reference device for calibration services, gauging offices and laboratories 
  • Suitable for testing, adjusting and calibrating pressure measuring instruments without using an external reference device 

 
10317 Dead weight tester PD 2500 increased accuracy barotec calibration technology hydraulic version primary standards pressure by ARMANO

10317 Dead weight tester PD 2500 with test gauge RFCh 250 barotec calibration technology hydraulic version primary standards pressure by ARMANO
model PD 2500
version high pressure version
accuracy (with factory calibration)
standard ±0.05 % of the measured value1)
enhanced ±0.02 % of the measured value1)

1) In the main measuring range, the accuracy refers to the measured value; in the secondary measuring range, it refers to 250 bar.
medium special oil
nominal piston cross-section 0.02 cm²
standard connection High-pressure connection 3/8" HPF-M 20x1.5 with 2 adapters for G½ and M 20x1.5 (union nut)
basic load 25 bar
main measuring range 250 to 2500 bar
required admission pressure air 6 bar

The main components are measuring system, hand pump, valve units, spindle unit for fine adjustment of the pressure and set of weights. 

The measuring system consists of a fine lapped piston / cylinder pair. The weight-loaded piston is pressed down by the local gravitation of the weights. From below the test pressure, which is generated and adjusted by the spindle pump or hand pump, acts towards the piston surface area. This test pressure is increased until the hydraulic force of the medium on the piston surface area (acting from below) compensates the weight force of the piston / weight system and the equilibrium of forces is reached. During this state of equilibrium, the piston floats freely in the cylinder. 

In order to simplify the handling, the weights are already standardised to the specific determined piston surface area and the local gravitation at the installation site. The set of weights is available discreetly graduated in different pressure units (bar, Pa, psi). 

Piston and weights are kept rotating with a motor while floating in order to minimise the influence of static friction of piston and cylinder and therefore to guarantee a sensitive discrimination threshold.
 

Certificates

  • GOST-Type Certification - Russia
  • GOST Type Certification - Kazakhstan


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