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 Shunt Meter
FIGURE
6-4.
4.6 Accuracy.
The accuracy of shunt meters is as follows:
q Accuracy:
%2.0 percent of reading
Linearity: %2.0 percent
q
q Repeatability:
%2.0 percent
5. FAN METERS. A second type of rotational inferential meter is the fan
meter (Figure 6-2).
5.1 Recommended Applications. The use of fan type meters is limited to cold
and hot water flow measurement. Fan meters have wide ranges and turndown
ratios greater than 10:1 are common. Pressure drop associated with fan type
meters increases proportionately with flow rate. Typically, permanent
pressure drop for this type of meter is less than 1.0 percent at all flow
conditions.
6-6
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