search

Retrotec DM-2A Manual de usuario Pagina 35

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 72
  • Tabla de contenidos
  • SOLUCIÓN DE PROBLEMAS
    •
  • MARCADORES
    • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 34
Page 35 of 72
©Retrotec Inc. 2012
6 Reduce uncertainty in results by taking lots of readings
Table 8 shows tests with approximate uncertainties that can result from applying various number of
Baseline points, Baseline times, and Time Averaging when taking induced pressures. As the number of
Baseline points, the Baseline time, and Time Averaging used for induced pressure readings increase,
the uncertainties decrease. For example, repeating the test using the same fan reduces the
uncertainty by 5% in each case. Typical uncertainties would be less than half of the values shown,
however the table exaggerates the uncertainty trend assuming there are errors while testing with
different fans, gauges, and test conditions.
Table 8: Test result uncertainties vary by changing the number of baseline points, the baseline time, and Time Averaging
for induced pressures.
Gauge
error
Fan
error
Baseline
points
Baseline
time
Baseline
variation
Time Averaging for
induced pressure
Uncertainty
1%
5%
1
5 s
1.5 Pa
5 s
22%
1%
5%
30
5 s
1.5 Pa
10 s
8.6%
1%
5%
30
10 s
1.5 Pa
10 s
7.9%
1%
5%
30
10 s
1.5 Pa
100 s
6.5%
1%
5%
30
20 s
0.5 Pa
100 s
5.9%
Vista de pagina 34
1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 71 72

Comentarios a estos manuales

Sin comentarios
  • LEGO Education Easy-Kleen Miracube Pyro-chem ENFORCER
  • Bryant Bombas De Agua Sangean Las radios Mark Levinson Reproductores de medios digitales Tripp Lite Cables displayport Husqvarna Suelo Por Las Máquinas
  • AIRLESSCO LP500 Sony APK-WB Lenovo H520e Desktop Samsung GT-I9235 Yamaha SW-3
  • Whirlpool AKP 263/NA Instrucciones de uso Yamaha 2009 Midnight Warrior El manual del propietario Acer 2920 Manual de usuario Dremel 4200 Especificaciones Vitek VT-1601 Manual de usuario