Model CPB5000
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Calibration technology Pneumatic pressure balance Model CPB5000 WIKA data sheet CT 31.01 for further approvals see page 7 Applications ■■ Primary standard for defining the pressure scale in a pneumatic range of up to 100 bar (1,500 psi) or with a gas to oil separator up to 400 bar (5,000 psi) ■■ Reference instrument for factory and calibration laboratories for the testing, adjustment and calibration of pressure measuring instruments ■■ Complete, stand-alone system, also suitable for on-site use Special features ■■ Total measurement uncertainty to 0.008 % of reading ■■ Factory calibration included as standard, traceable to national standards; with DKD/DAkkS calibration possible as an option ■■ High long-term stability with recommended recalibration interval every five years ■■ Masses manufactured from stainless steel and aluminium, can be adjusted to local gravity ■■ Quick and safe replacement of the piston-cylinder system for measuring range changes via patented ConTect quickrelease system as an option Pneumatic pressure balance, model CPB5000 Description Proven primary standard Pressure balances (dead-weight testers) are the most accurate instruments available on the market for the calibration of electronic or mechanical pressure measuring instruments. The direct measurement of the pressure (p = F/A), as well as the use of high-quality materials enable a very small measurement uncertainty, in conjunction with an excellent long-term stability. The pressure balance (dead-weight tester) has therefore been used for years in factory and calibration laboratories in industry, national institutes and research laboratories. Basic principle Pressure is defined as the quotient of force and area. The core component of the CPB5000 is therefore a very precisely manufactured piston-cylinder system, onto which a mass load is applied in order to generate the individual test points. The mass load is proportional to the target pressure and this is achieved through optimally graduated masses. As standard, these masses are manufactured to the standard gravity (9.80665 m/s²), though they can be adjusted to a specific location and also DKD/DAkkS calibrated. Stand-alone operation Due to its integrated pressure generation and the purely mechanical measuring principle, the model CPB5000 is ideal for on-site use for maintenance and service. WIKA data sheet CT 31.01 ∙ 03/2016 Data sheets showing similar products and accessories: Pressure balance in compact design; model CPB3800; see data sheet CT 31.06 Hydraulic pressure balance; model CPB5800; see data sheet CT 31.11 Pressure balance for high pressure; model CPB5000HP; see data sheet CT 31.51 Pressure balance for differential pressure; model CPB5600DP; see data sheet CT 31.56 CalibratorUnit; model CPU6000; see d

Easy operation The pressure setting depends on the instrument version and is either done via an integrated pump or from external pressure supply via a metering valve. For further pressure increases and fine adjustment, a very precisely controllable spindle pump is fitted, which only runs within the pump body. As soon as the measuring system reaches equilibrium, there is a balance of forces between the pressure and the masses applied. The excellent quality of the system ensures that this pressure remains stable over several minutes, so that the pressure value for comparative measurements can...

The following tables show the number of masses within a mass set with their nominal mass values and the resulting nominal pressures for the respective measuring ranges. Should the instrument not be operated under reference conditions (ambient temperature 20 °C (68 °F), atmospheric pressure 1,013 mbar (14.69 psi), relative humidity 40 %), the relevant corrections must be made, for example with the CPU6000 CalibratorUnit, see page 9. The masses are manufactured, as standard, to the standard gravity (9.80665 m/s2) although they can be adjusted for any local gravity. WIKA data sheet CT 31.01 •...

WIKA data sheet CT 31.01 • 03/2016

Piston-cylinder systems model CPS5000 Pneumatic version 1) Theroretical starting value; corresponds to the pressure value generated by the piston (by its own weight). To optimise the operating characteristics more masses should be loaded. 2) The smallest pressure change value that can be achieved based on the standard mass set. To reduce this, a set of fine increment masses is also available. 3) The accuracy from 10 % of the measuring range is based on the measured value. In the lower range, a fixed error based on 10 % of the range applies. 4) Measurement uncertainty assuming reference...

1) Theroretical starting value; corresponds to the pressure value generated by the piston (by its own weight). To optimise the operating characteristics more masses should be loaded. 2) The smallest pressure change value that can be achieved based on the standard mass set. To reduce this, a set of fine increment masses is also available. 3) The accuracy from 10 % of the measuring range is based on the measured value. In the lower range, a fixed error based on 10 % of the range applies. 4) Measurement uncertainty assuming reference conditions (ambient temperature 20 °C ( 68 °F), atmospheric...

WIKA data sheet CT 31.01 • 03/2016

Dimensions in mm (in) The figure shows a CPB5000 pneumatic high-pressure base unit with the ConTect quick-release connector option. The versions for pneumatic low pressure and pneumatic with integrated gas to oil separator do not differ from it dimensionally, only in the arrangement of the control elements. 2 Side view (left) Front view Test item connection Threaded insert, changeable Quick-release connector with knurled nut O-ring 8 x 2 Pneumatic base with integrated gas to oil separator Pneumatic base, low pressure Top view Outlet valve Inlet valve (not for pneumatic low pressure) Test...

CalibratorUnit model CPU6000 The models of the CPU6000 series are compact tools for use with a pressure balance (dead-weight tester). In particular when highly accurate measuring values, with measurement uncertainties of less than 0.025 %, are required, complicated mathematical calculations and corrections are necessary. With the CPU6000 in combination with the CPB-CAL (iPad® app) and/or WIKA-CAL (PC software) all critical ambient parameters can be registered and automatically corrected. The CPU6000 series is made up of three instruments Weather station, model CPU6000-W The CPU6000-W...