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Interface #40 to Voltage, #SI5100

Interface the 40C Anemometer with an analog device such as a computer, meter, or recorder.

  • Interface #40 to Voltage, #SI5100

Configuration Options

The SI5100 wind speed interface module is used for interfacing the NRG 40C Anemometer to an analog device such as a computer, meter, or recorder.

The module output signal is a negative ground voltage set at 0 to 5 VDC at wind speeds ranging from 0 to 44.7 m/s (0 to 100 mph).

Power is supplied by any 12 VDC source. The SI5100 is packaged in a plastic case with an octal plug. A DIN-rail mountable octal socket with screw terminals is included.

  Interface 40C to Voltage, #SI5100 (#2062)
Description  
Sensor type
  • anemometer interface, voltage output
  • Converts the low level AC sine-wave signal from the sensor to a DC voltage.
Applications
  • wind turbine control
  • process control
  • environmental monitoring
  • meteorological studies
Sensor range 0 m/s to 44.7 m/s (0 mph to 100 mph)
Sensor compatibility
  • NRG #40 anemometer
  • consult NRG for other sensors
Input signal  
Signal type (sensor output) low level AC sine wave compatible with NRG #40 Maximum Anemometer
Signal range (sensor output)
  • 0 Hz to 58 Hz, equivalent to 0 m/s to 44.7 m/s (0 mph to 100 mph)
  • 80 mV peak-to-peak minimum input signal
Output signal  
Signal type DC voltage proportional to wind speed
Transfer function
  • scale factor = 0.086 V per Hz
  • m/s = 8.94 x Vout
  • mph = 20 x Vout
Accuracy +/- 0.447 m/s (+/- 1 mph)
Electrical time constant typical response time 0.5 seconds
Recommended load resistance 200 Ω minimum (25 mA max output current)
Output signal range 0 V DC to 5 V DC for 0 m/s to 44.7 m/s (0 mph to 100 mph)
Power requirements  
Supply voltage 12 V DC to 15 V DC
Supply current 8 mA to 13 mA (0.1 W to 0.2 W), no load on output
Installation  
Mounting mating socket mounts to 35mm (type O) DIN rail or with screws to any flat surface
Tools required #1 Phillips (+) or flat blade (-) screwdriver for terminals
Accessories NRG #40 Maximum Anemometer, Item No. 1899
Wiring
Octal Socket TerminalConnection
#1wind speed input (+)
#2wind speed input (-)
#3DC voltage supply (+)
#4DC voltage supply (-)
#5output signal (-)
#6output signal (+)
#7no connection
#8no connection
Environmental  
Operating temperature range -40 °C to 70 °C (-40 °F to 150 °F)
Operating humidity range 0 % to 95 % RH (non condensing)
Physical  
Connections octal plug, mating socket with screw terminals included
Weight 75 g (0.17 pounds) including socket
Dimensions
  • module: 50 mm x 50 mm x 69 mm (1.4 inches x 1.4 inches x 2.7 inches), including plug
  • in socket: 41 mm x 56 mm x 77 mm (1.6 inches x 2.2 inches x 3.0 inches)
Materials  
Enclosure plastic housing with octal plug base
Terminals octal plug, mating socket with screw terminals included