CCNY Weather Station
SENSOR SPECIFICATIONS

The City College of New York

138th Street & Convent Avenue, New York, NY 10031
N 40.81920857°, W 73.94904472°, 98.365 m elevation




Barometric Pressure Sensor:
- Campbell Scientific CS115



     Manufacturer – Druck (http://www.druck.com)
     Type – RPT410F-3143
     Operating Temperature Range:  -40 ºC to +60 ºC
     Total Accuracy:





            At 20C
-10C to +50C
-20C to +60C
-40C to 60C

+0.3 mb (hPa)
+0.5 mb (hPa)
+1.5 mb (hPa)
+2.0 mb (hPa)





     Long Term Stability:            <0.11 mb (hPa) per year (100 ppm)
     Overpressure Limit:            
1375 mb (hPa)




Temperature & Relative Humidity Probe:
- Campbell Scientific HM45C



     Manufacturer - Vaisala Oyj, Finland (http://www.vaisala.com)
     Type - HUMICAP 180
     Accuracy:




0 to 15 % RH
 15 % RH to 78 % RH
± 1.0 % RH
± 1.5 % RH





     Calibration Results:




At 0.5 % RH
 42.6% RH
72.7 % RH
At 22.86 C
+0.8 % RH
0.0 % RH
+0.7 % RH
-0.08 ºC





Tipping Bucket Rain Gage:
- Campbell Scientific TE525WS-L



     Manufacturer - Texas Electronics TE525I (http://www.texaselectronics.com)
     Type - Tipping Bucket
     Operating Range:




Temperature:
umidity:

0 to 50 ºC
0 to 100 % RH





     Accuracy:




±1%
+0 to -3%
 +0 to -5%
0 to 1 in./hr
1 to 2 in./hr
2 to 3 in./hr.





Pyranometer:
- Campbell Scientific LI200X-L



     Manufacturer - LI-COR International, Inc. LI-200SA (http://www.licor.com)
     Type: - High stability silicon photovoltaic (blue corrected) detector mounted in cosine-corrected head.
     Operating Range:





Temperature:
   Relative Humidity:
Cosine Correction:
Response Time:
-40 to +65 ºC
0 to 100%
corrected up to 80º
10 μs




     Temperature Dependence: 0.15 %/ºC
     Accuracy: - Absolute error in natural daylight is ±5 % maximum; ±3 % typical.




Stability:
Sensitivity:
Linearity:
< ±2 % change over a 1 year period.
0.2kW /sq m/ mV
Maximum deviation of 1 % up to 3000 W/sq m.




Wind Monitor:
- R. M. Young 05103



     Manufacturer - R. M. Young Company, Traverse City, MI, (http://www.youngusa.com)
     Type: - Helicoid Propeller / Balanced Vane.
     Wind Speed Specification Summary:





Range:
Sensor:
Propeller Pitch:
Threshold sensitivity:
Transducer:
Transducer Output:
Output Frequency:
0 to 60 m/s (130 mph), gust survival
18 cm diameter, 4 blade helicoids molded polypropylene propeller
29.4 cm
0.9 m/s (2.0 mph)
Centrally mounted stationary coil, 4K Ohm DC resistance.
AC sine wave, 100 mV p-p @ 60 rpm.  20 V p-p @ 12,000 rpm.
3 cycles/propeller rev. (0.098 m/s /Hz)




     Wind Direction Specification Summary:




Range:
Sensor:
Damping Ratio:
Delay Distance:
Threshold sensitivity:
Damped Natural Wavelength:
Undamped Natural Wavelength:
Transducer:
360º mechanical, 355º detected (electrically 5º open)
Balanced vane. 38 cm (15 in) turning radius.
0.25
1.3 m for 50% recovery.
1.0 m/s (2.2 mph) @ 10º displacement.  1.5 m/s (3.4 mph) at 5º displacement.
7.4 m (24.3 ft.)
7.2 m (23.6 ft.)
Precision conductive plastic potentiometer, 10 K Ohm, 0.25% linearity.


















Comments To Weatherman
NOAA-CREST CCNY All rights reserved
Modified: 9 June 2005