menu
MAJOR TYPES OF SENSORS AND THEIR ADVANTAGES/DISADVANTAGES
1. Safdy Systems Vortex Shedding
  • Highly accurate
  • Linear over very wide range
  • Once-off factory calibration only
  • No degradation over lifetime
  • High initial purchase price
  • Lower maintenance cost

2. Propeller Type
  • Bearing slippage problem at low velocities
  • Bearings degrade with time
  • Susceptible to damage in harsh environment
  • Low initial purchase price
  • Needs regular calibration
  • High maintenance cost

3. Resistance Type
  • Dependant on air mass (chill factor)
  • Compensation for humidity
  • Compensate for air pressure
  • Sensor must be kept clean
Tel/fax: +27 12 8042097
safdy@telkomsa.net