2019-10-18, 13:39
I am ordering a wind speed sensor from china. (https://www.aliexpress.com/item/819556495.html)
It has 6 output types.
1) pulse output
2) 4-20ma 3 cable
3) 0-10V 4 Cable
4) 0-2V 3 cable
5) 0-5V output
6) RS485 output
I need help in deciding which output format should i choose. They have provided speed calculation formula for pulse and 0-10volt output types only as shown below:
Do i need any additional driver/hat to decode these outputs in PI or I can connect directly like the RS485 output ?
It has 6 output types.
1) pulse output
2) 4-20ma 3 cable
3) 0-10V 4 Cable
4) 0-2V 3 cable
5) 0-5V output
6) RS485 output
I need help in deciding which output format should i choose. They have provided speed calculation formula for pulse and 0-10volt output types only as shown below:
Quote:Pulse output type calculation:Among these output types, is there something like one output type is better than other in terms of connection, accuracy etc ?
Winds = the number of pulses within a unit time X factor;
The formula: a unit time refers 1S;
Model suffix 12CM, the coefficient is 0.1 (1m / s = 10 pulses)
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0-10V type calculation:
about the 0-10V .you must use DC24V power supply. red :power + ; black :power - . blue : 0-10V output
1v voltage =3m/s wind speed 2V voltage :6m/s wind speed 3V voltage =9m/s wind speed the max is 30m/s wind speed
Do i need any additional driver/hat to decode these outputs in PI or I can connect directly like the RS485 output ?
