Centrifugal Fans AT belt driven - Nicotra Gebhardt
Centrifugal Fans AT belt driven - Nicotra Gebhardt Centrifugal Fans AT belt driven - Nicotra Gebhardt
Description Symbol / Unit / Definition A-A - A 2 242 mm² b mm D r f BP f c f p F p f pd f h mm Hz Hz - N - - J kgm² K m²s/h L T L Mg L Mu L pA4 L pA7 L WA L WA4 L WA7 L Wfc4 L Wfc7 mm mm mm dB dB dB dB dB dB dB L Wrel4 dB L Wrel7 dB L 10h h m kg N 1/min N max p a P a P b p d2 p F 1/min Pa kW kW Pa Pa Operational range (free discharge) Fan outlet area Deflection of belt under test force Impeller diameter Blade passing frequency Octave centre frequency Motor size correction factor Test force Dynamic pressure correction factor (free discharge) Correction at actual efficiency Moment of inertia Calibration factor for volumeter Centre distance Measuring marks before tensioning (flat belts) Measuring marks after tensioning (flat belts) A weighted sound pressure level (discharge) A weighted sound pressure level (inlet) A weighted sound power level In duct sound power level (discharge) Casing and free inlet sound power level Discharge sound power in the octave bands Inlet sound power in the octave band Relative sound power (discharge) Relative sound Power (inlet) Nominal bearing life Mass Fan speed Maximum fan speed Atmospheric pressure Absorbed fan power Bearing power losses fan dynamic pressure at discharge Total fan pressure P N p sF kW Pa gp Pa gp 0 Pa gp Dü Pa q v q Vopt R W m³/h m³/h t °C t a t A t 1 J/kg×K °C s °C Θ K u m/s v 2 v m2 m/s m/s X mm z - e* mm h a h r h s % % % r kg/m² r 1 kg/m² Belt Driven Centrifugal Fans / Description The following symbols are used in this catalogue: The following symbols are used in this catalogue: Motor power (nominal) Fan static pressure (free discharge) Differential pressure Pressure difference at the inlet measuring device Pressure difference at the inlet cone Volume flow rate Volume flow at optimum efficiency Specific gas constant Temperature of flow medium Temperature of discharge air in test chamber Acceleration time Air temperature Thermodynamic temperature at fan inlet Tip speed Outlet velocity Average fluid velocity at discharge Pulley position on shaft extension relative to bearing No. of blades Stretching value of flat belt Total efficiency at max speed Impeller efficiency Fan total efficiency at max speed Air density Air density at fan inlet
Notes Quality management system Machine Safety Catalogue data Belt Driven Centrifugal Fans / Description / Notes DIN EN ISO 9001 Nicotra Gebhardt quality is the result of a continuous company policy intended to guarantee that our product properties and features are clearly superior to comparable products. This already established company maxim led in April 1985 to the auditing and certification of the existing quality management system. In the following years it was updated to match the changing international and European standards. Modern production processes, monitored by our quality management system, guarantee a high repeat accuracy in production. This ongoing high standard of quality permits the establishing of the performance data in classes of accuracy in accordance with DIN 24166. The narrow tolerances ensure a high level of data reliability for our products. The fans contained in this catalogue are not machines in the sense of the EC Machine Directive. They are delivered with a manufacturer "Declaration of incorporation". The assessment of the dangers associated with the fan and necessary safety measures are based on the VDMA Unit sheet 24167: Fans; Safety requirements. The operating instructions give which safety measures are still necessary on assembly to ensure that the fans comply with the Machine Directive 2006/42/EC. We reserve the right to change any measurements and technical data in this catalogue in accordance with further development of our products. All information valid at the time of printing. 243
- Page 55 and 56: Notes Notes Belt Driven Centrifugal
- Page 57 and 58: AT SC 7/7-18/18 AT C 7/7-18/18 Spec
- Page 59 and 60: AT TIC 20/15-30/28 Specifications F
- Page 61 and 62: AT SC2 7/7-18/18 Specifications Fan
- Page 63 and 64: AT SC2 7/7-18/18 Specifications Fan
- Page 65 and 66: Gebhardt fan systems - the "complet
- Page 67 and 68: Fittings / Accessories Corrosion Pr
- Page 69 and 70: Fittings / Accessories Volumeter p
- Page 71 and 72: Fittings / Accessories Anti Vibrati
- Page 73 and 74: Fan Sets Base Frame with Belt Tensi
- Page 75 and 76: RZR 11-0200/-0500 Fan set arrangeme
- Page 77 and 78: RZR 12-0200/-0710 Fan set arrangeme
- Page 79 and 80: RZR 13-0400/-1000 RZR 18-0400/-1000
- Page 81 and 82: AT 7/7-18/18 Fan set arrangement wi
- Page 83 and 84: RZR 12-0200/-0710 Fan set arrangeme
- Page 85 and 86: RZR 13-0400/-1000 RZR 18-0400/-1000
- Page 87 and 88: Fan Sets Min. Pulley-Diameter, Bear
- Page 89 and 90: Fan Sets Belt Driven Centrifugal Fa
- Page 91 and 92: Fan Sets Min. recommended Pulley Di
- Page 93 and 94: Description Bearings ADH / AT / RDH
- Page 95 and 96: Description Motors Attachment point
- Page 97 and 98: Description Operating limits ADH Pe
- Page 99 and 100: Description Operating limits RDH Pe
- Page 101 and 102: Description Performance p sF = p F
- Page 103 and 104: Description Sound 1 = Air permeable
- Page 105: Description Operating limits RZR AT
Notes<br />
Quality management system<br />
Machine Safety<br />
Catalogue data<br />
Belt Driven <strong>Centrifugal</strong> <strong>Fans</strong> / Description / Notes<br />
DIN EN ISO 9001<br />
<strong>Nicotra</strong> <strong>Gebhardt</strong> quality is the result of a continuous company policy intended to<br />
guarantee that our product properties and features are clearly superior to comparable<br />
products.<br />
This already established company maxim led in April 1985 to the auditing and certification<br />
of the existing quality management system. In the following years it was updated<br />
to match the changing international and European standards. Modern production<br />
processes, monitored by our quality management system, guarantee a high repeat<br />
accuracy in production.<br />
This ongoing high standard of quality permits the establishing of the performance<br />
data in classes of accuracy in accordance with DIN 24166.<br />
The narrow tolerances ensure a high level of data reliability for our products.<br />
The fans contained in this catalogue are not machines in the sense of the EC Machine<br />
Directive. They are delivered with a manufacturer "Declaration of incorporation".<br />
The assessment of the dangers associated with the fan and necessary safety measures<br />
are based on the VDMA Unit sheet 24167: <strong>Fans</strong>; Safety requirements.<br />
The operating instructions give which safety measures are still necessary on assembly<br />
to ensure that the fans comply with the Machine Directive 2006/42/EC.<br />
We reserve the right to change any measurements and technical data in this catalogue<br />
in accordance with further development of our products. All information valid at<br />
the time of printing.<br />
243
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