In more and more production plants, quality-relevant measuring points must be technically inspected at regular intervals and the inspection results documented. This necessity often disrupts production, since in the past quality-relevant measuring points have had to be removed. In addition, a second measuring detector had to be kept available. Due to the many measuring instruments this was often connected with high costs for the plants.

The master meter is a cost-effective alternative for testing the quality-relevant measuring points in a production plant.

Another advantage is that the testing is carried out by an independent and neutral company (WPD). Our company, WPD, has specialized itself in all measuring devices presently on the market and, as a result, is able to offer servicing for all manufacturers of measuring devices at our site in Leuna, Germany.


CMM 85

Dimensions: 1,200 x 800 mm
Electrical connection: CEAG 400 VAC 16 Abzw. Adapter 400 VAC 16 A n. Ex.
Flow range:
The master meter is switchable in a measuring range from:
340 to 6,800 kg/h and 4,350 to 87,000 kg/h 
340 to 6,800 l/h and 4,350 to 87,000 l/h
Error of measurement: The error of measurement is +/- 0.15 % of the measured value with a reproducibility of +/- 0.02% of the measured value.

CMM 270

Dimensions: 1,600 x 870 mm
Electrical connection: Power supply: 230 VAC 16 A n. Ex
Flow range:
The master meter can be used in a measuring range
from 13,500 to 270,000 l/h 
and 13,500 to 270,000 kg/h
Error of measurement: The error of measurement is +/- 0.1 % of the measured value with a reproducibility of +/- 0.02 % of the measured value



This technology is used in the:

  • Chemical industry
  • Food and luxury food industry
  • Pharmaceutical industry
  • Petrochemical sector
  • Paper industry


The measuring devices that can be tested:

  • Oval wheel meters
  • Cylindrical piston meters
  • Woltmann / vane meters
  • Variable area flow meter
  • Magnetic inductive flow meters (MID)
  • Mass flow meter (Coriolis)
  • Vortex meters


Unloading containers and pipelines:

  • Cylindrical containers with torispherical head (standing / lying)
  • Spherical containers
  • Cylindrical containers