Siemens SITRANS FUP1010 Operating Instructions Manual page 18

Description
3.3 Theory of Operation
2-Channel
Dual Channel provides two independent measurement channels that operate simultaneously.
Depending on the specific model, Dual Channel supports: Clamp-on Transit-time, In-line
Transit-time and Reflexor.
①
②
③
④
2-Path
2-Path flowmeters use two measurement channels to achieve a single output via a "virtual"
third channel. The resultant data is the average of the two channels. Only clamp-on or in-line
transit-time operation is allowed. Benefits include highest available precision and enhanced
immunity to distorted flow profile conditions.
①
②
16
Upstream Sensors
Downstream Sensors
Channel 1 for Pipe A
Pipe A Output Flow
Sensor Path 1
Sensor Path 2
⑤
Pipe B Output Flow
⑥
Channel 2 for Pipe B
⑦
Pipe B
⑧
Pipe A
③
Average= (Path 1 + Path 2) / 2
④
Pipe (front view)
FUP1010 IP67 Portable Flowmeter
Operating Instructions, 02/2010, A5E02951522A Revision 01