Young Wind Sensor Calibration Accessories - Manual (Page 10)

Page 9
18860-90
R. M. YOUNG COMPANY
TYPICAL TORQUE VALUES
For Checking Anemometer Bearing and Transducer Condition
NOTES:
1. New instrument torque and threshold specifications are maximum values
2. Values shown are maximum torque to maintain instrument threshold at or below 0.5 m/s and 1.0 m/s respectively.
3. EPA and NRC instrument specifications designate 0.5 m/s wind speed starting threshold. ASTM D5096-90 "Standard
Test Method for Determining the Performance of a Cup Anemometer or Propeller Anemometer" defines "starting
threshold" and outlines a method for its determination.
SENSORS:
03110 Wind Sentry 75 cm Cup Wheel Assembly
08234 18 X 30 cm Polypropylene Propeller (PP)
08254 20 X 30 cm Carbon Fiber Thermoplastic Propeller (CFT)
08274 22 X 30 cm Expanded Polystyrene Propeller (EPS)
12170C 100 cm Cup Wheel Assembly
STANDARD BEARINGS:
Model 05103 Wind Monitor / 09101 Wind Monitor-SE : Double Teflon seals & lubricated with M-28 low torque grease
Model 05106 Wind Monitor - MA : Double Teflon seals & lubricated with "Sta-lube" waterproof grease.
All other models : Double metal shields & lubricated with LOI instrument oil
1 New Instrument 2 Max torque for
threshold of:
Instrument (Standard Models) Sensor Transducer Torque Threshold 0.5 m/s 1.0 m/s
gm-cm m/s gm-cm gm-cm
03101-5 Wind Sentry Anemometer 03110 AC Coil 0.3 0.5 0.3 1.0
05103 Wind Monitor 08234 AC Coil 2.4 1.0 2.6
05106 Wind Monitor - MA 08234 AC Coil 2.9 1.1
05305 Wind Monitor - AQ 08254 AC Coil 0.3 0.3 1.0 3.8
05701 Wind Monitor - RE 08274 AC Coil 0.3 0.2 1.3 5.0
09101 Wind Monitor - SE 08234 AC Coil 2.4 1.0 2.6
09305 Wind Monitor - AQ - SE 08254 AC Coil 0.3 0.3 1.0 3.8
12102 Cup Anemometer 12170C 2400 mV Tach-Gen 0.4 0.5 0.4 1.4
12102D Cup Anemometer 12170C Photo Chopper 0.1 0.3 0.4 1.4
27106 Propeller Anemometer 08274 500 mV Tach-Gen 0.5 0.3 1.3 5.0
27106T Propeller Anemometer 08254 500 mV Tach-Gen 0.5 0.4 1.0 3.8
08274 Photo Chopper 0.3 0.2 1.3 5.0