18
OIO 23en Edition 10/2017
Operating Instructions
Description
Function description
Function description
Description
As screw meters flowmeters belong to the group of rotating displacement meters. The fluid current
makes the measuring unit rotate. The displacement effect results from the continuous filling, axial
displacement and discharge of the volumes that are formed by the measuring housing and measuring
unit. The measured liquid flows around and lubricates all the rotating parts. Thanks to the displacement
principle, the flowmeter does not require inlet and smoothing sections in its supply and discharge.
Depending on the customer requirements, the flowmeters can be equipped with suitable end
connections for connection to various flanges.
Rolling bearings
The measuring unit is maintained without contact and with a low degree of friction in the housing of the
flowmeter by means of precision rolling bearings. Depending on the respective size, the following
bearings are used:
□
Single-row deep-groove ball bearings
□
Paired angular-contact ball bearings
Fig. 1
Structure, flowmeter OMP series
1
Connection
2*
Bearing cover
3
Temperature sensor hole
4
Pick up hole
5
Measuring housing
6
Measuring screw small
7
Ball bearing, floating bearing end
8
Measuring screw large
9
Ball bearing, fixed bearing end
* only for OMP 52
4
1
6
4
1
8
9
7
2*
2*
3
5