Config Sensors with known characteristics
Posted: Wed Jan 28, 2015 11:29 am
Hello Gays, it´s Andre, a newbie about RACE TECHNOLGY,
About configuration Analogue Inputs with known sensor resistance characteristics.
Please test it.
Download this table from my side and open it.
http://www.rodcorner.de/file/DL1_Sensor_Conf.xls
Fill the column "R2-NTC Ohm characteristic" with the known values.
Try different resistors (R1) for maximum voltage difference and accurate values in the relevant area with the help of the diagram.
Take a resistor to the nearest center value and measure with a ohm-meter the exact value.
Put this value in the R1 cell.
Copy the orange X Y cells
Open your DL1 Configuration,
>Analogue Inputs
>Input equation [V]
>Custom
>Generate an equation from a table
>Paste the copied values in the "Input X (Volts) Output Y" field.
>Fit a curve (polynominal)
>If necessary, copy the formula into a text file. Get them in the correct format.
example:
from -3,07 * x^3 + 25,8 * x^2 - 91,8 * x + 181
to ((((-3,07) * (x ^ 3)) + (25,8 * (x ^ 2))) - (91,8 * x)) + 181
>Add them back into the format field.
>OK
>Send Configuraton
Test your sensor with the selected R1 resistor.
@ Support
If I fill out the fields in the DL1 Configuration, Analogue Inputs, Input equation [V], Custom,
Generate an equation from a table, Fit a curve (polynominal),
i get an error message:
"Error: Error in Expression Syntax, at position xx"
What am I doing wrong?
Andre
sorry my english
About configuration Analogue Inputs with known sensor resistance characteristics.
Please test it.
Download this table from my side and open it.
http://www.rodcorner.de/file/DL1_Sensor_Conf.xls
Fill the column "R2-NTC Ohm characteristic" with the known values.
Try different resistors (R1) for maximum voltage difference and accurate values in the relevant area with the help of the diagram.
Take a resistor to the nearest center value and measure with a ohm-meter the exact value.
Put this value in the R1 cell.
Copy the orange X Y cells
Open your DL1 Configuration,
>Analogue Inputs
>Input equation [V]
>Custom
>Generate an equation from a table
>Paste the copied values in the "Input X (Volts) Output Y" field.
>Fit a curve (polynominal)
>If necessary, copy the formula into a text file. Get them in the correct format.
example:
from -3,07 * x^3 + 25,8 * x^2 - 91,8 * x + 181
to ((((-3,07) * (x ^ 3)) + (25,8 * (x ^ 2))) - (91,8 * x)) + 181
>Add them back into the format field.
>OK
>Send Configuraton
Test your sensor with the selected R1 resistor.
@ Support
If I fill out the fields in the DL1 Configuration, Analogue Inputs, Input equation [V], Custom,
Generate an equation from a table, Fit a curve (polynominal),
i get an error message:
"Error: Error in Expression Syntax, at position xx"
What am I doing wrong?
Andre
sorry my english