General Information
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Analog outputs are then connected to the T7:
U - channel 1 - AIN0
V - channel 2 - AIN1
W - channel 3 - AIN2
sonic speed - channel 4 - AIN3
Sample Dataset taken over 10 min:
And zoomed in to ~half a second of data taking:
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Relevant pin connections (all of which are copied from the manual)
Output pins from the anemometer (p. 15 of manual):
To change the analog output settings, connect a RS 432 serial port to a windows computer and to the anemometer outputs.
RS 432 serial port pin connections (p.32 of manual):
For the serial connector we were using, pin 2 was white, pin 3 was yellow, pin 5 was orange, but apparently this isn't necessarily generically true.
The windows computer should have WIND software downloaded on it. Follow p. 46 of the manual.
Mounting plate
through bolts are McMaster Carr
Super-cheap hot-wire anemometer for airflow in the dome:
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Temperature sensor goes down to -10C.
Pinout
We really only need to connect to 4 pins: Vcc=+12V, gnd, buffered temperature output, and Out. Leave shutdown pin floating, if it goes high then the onboard regulator is turned off.
Temperature sensor is MCP9701 (spec sheet: 20001942G.pdf). temperature output is V=0.4V + T(C) * 19.6 mV, so T= (V-0.4)/19.6E-3.
T(C). V_temp output
-10.0000 0.2040
-9.0000 0.2236
-8.0000 0.2432
-7.0000 0.2628
-6.0000 0.2824
-5.0000 0.3020
-4.0000 0.3216
-3.0000 0.3412
-2.0000 0.3608
-1.0000 0.3804
0 0.4000
1.0000 0.4196
2.0000 0.4392
3.0000 0.4588
4.0000 0.4784
5.0000 0.4980
6.0000 0.5176
7.0000 0.5372
8.0000 0.5568
9.0000 0.5764
10.0000 0.5960
11.0000 0.6156
12.0000 0.6352
13.0000 0.6548
14.0000 0.6744
15.0000 0.6940
16.0000 0.7136
17.0000 0.7332
18.0000 0.7528
19.0000 0.7724
20.0000 0.7920
21.0000 0.8116
22.0000 0.8312
23.0000 0.8508
24.0000 0.8704
25.0000 0.8900
Cabling
We can use DB9 hardware off the shelf. To connect unit to DB9 connector:
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