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Catalog excerpts
![Volume Flow Controller - 2](https://img.directindustry.com/pdf/repository_di/16696/volume-flow-controller-68244_2m.jpg)
Volume flow controller type VFC Flow rate adjustmentmanualFlow rate adjustment with potentiometersFlow rate adjustment with mechanical stops > Selection according to nominal size of the duct system Flow rate adjustment without special tools For low velocity systems Suitable for constant and variable volume flow systems and for և > min / > max changeover Lip seal included Retrofit of actuator easily possible 2 >
Open the catalog to page 2![Volume Flow Controller - 3](https://img.directindustry.com/pdf/repository_di/16696/volume-flow-controller-68244_3m.jpg)
TROX type VFC volume flow controllers are mechanicalsystem-powered controllers and were developed for the con- trol of flow rates in constant and variable volume systems with low velocities. The controllers are suited for both supply andextract air use. Each controller has been subjected to an aero-dynamic function test. The required flow rate can be easily set using a scale.There are 3 configurations of controllers: Constant flow rate Variable flow rate, with potentiometers Variable flow rate, with mechanical stopsThe controller operates without external power supply. A con-trol damper...
Open the catalog to page 3![Volume Flow Controller - 4](https://img.directindustry.com/pdf/repository_di/16696/volume-flow-controller-68244_4m.jpg)
232 approx. 300 50 15 > a D approx. 200 Keep clear to provide access for setting > min approx. 300 232 50 85 > a D approx. 200 Keep clear to provide access to the actuator >
Open the catalog to page 4![Volume Flow Controller - 5](https://img.directindustry.com/pdf/repository_di/16696/volume-flow-controller-68244_5m.jpg)
> min unit in m > 3 /h or l/s:Minimum unit flow rate f > m in Hz:Octave band centre frequencyL > W in dB:Sound power level of air-regenerated noise inthe room (low pressure) side ductingL p > g in Pa:Total pressure differential All sound power levels based on 1pW, all sound pressure levelson 20 ǵPa.All noise levels measured in a reverberation chamber.The sound power data was determined and corrected according to DIN EN ISO 5135, February 1999. > W2 in dB:Sound power level of case radiated noiseL > pA in dB(A): A-weighted sound pressure level of air-regener- ated noise in the room, system...
Open the catalog to page 5![Volume Flow Controller - 10](https://img.directindustry.com/pdf/repository_di/16696/volume-flow-controller-68244_10m.jpg)
Actuator 24 V, V. > min /V. > max changeover Supply voltage:24 VAC ױ20 %, 50/60 Hzor 24 VDC 10 %Power rating:max. 3 VA (for a.c. voltage)max. 3 W (for d.c. voltage)Control signal:1- or 2-wire control Protection level:IP 42 Actuator 24 V, variable flow rate Supply voltage and power rating as above.Control signal:0 to 10 VDC, Ri > 100 k ѢĦ > Service button Protection level:IP 42 Actuator 230 VAC, V. > min /V. > max changeover > Indicator lightPotentiometer Supply voltage:230 VAC 20 %, 50/60 HzPower rating:3 VA Control signal:1- or 2-wire control Protection level:IP 42 > Room...
Open the catalog to page 10![Volume Flow Controller - 11](https://img.directindustry.com/pdf/repository_di/16696/volume-flow-controller-68244_11m.jpg)
* Text for basic construction Type Control function Volume flow controllerVFC > Basic construction (manual setting), no entry required E0124 V, > min / LJ > max changeover, with potentiometersE02230 VAC, > min / LJ > max changeover, with potentiometersE0324 V, variable volume flow, with potentiometers, control signal 0 to 10 VDCM0124 V, > > min / LJ > max changeover, with mechanical stops M02230 VAC, > min / LJ > max changeover, with mechanical stops > Make:TROX Type:VFC / 100 > Design changes reserved All rights reservedש TROX GmbH (04/2008)
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