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1.4.1
Working principle of the TME 400
The working principle of a mechanical turbine meter is based on the measurement of
the gas velocity of the flowing gas which powers a turbine wheel. The speed of the
turbine within the measuring range (Q
mean gas velocity and thus the flow rate. The number of rotations, therefore, is a
measurement for the gas volume flowing through.
1
Flow straightener
2
Sensor sleeve
3
O-ring
4
Counter
5
Clamp screw
6
Thermowell for
temperature comparison (fiscal)
Figure 1: Turbine meter sectional drawing
- Q
) is approximately proportional to the
min
max
7 Sensor
8 Permanent magnet
9 Pressure connection
10 Turbine wheel
11 Oil pump
Manual TME400-VMF · EN11 · January 22nd, 2024
1 Introduction
21
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