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Changes for page Sensor Module

Last modified by Heimir Thordarson on 2026/07/05 12:56
From version 64.8
edited by Heimir Thordarson
on 2026/03/23 19:39
Change comment: There is no comment for this version
To version 66.5
edited by Heimir Thordarson
on 2026/03/24 14:54
Change comment: There is no comment for this version

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... ... @@ -259,7 +259,7 @@
259 259  (((
260 260  {{mathjax}}
261 261  $$
262 -T = \frac{1}{\frac{1}{T_0} + \frac{1}{\beta} \ln\left(\frac{R_T}{R_0}\right)}
262 +Q = C_D \cdot A_D \sqrt{\frac{2 \cdot \Delta P}{\rho}}
263 263  $$
264 264  {{/mathjax}}
265 265  )))
... ... @@ -267,15 +267,24 @@
267 267  
268 268  where:
269 269  
270 -* {{mathjax}}\(\beta\){{/mathjax}}= material constant that defines the steepness of its resistance-temperature curve between two temperature points, usually 25/85 degrees celsius. In this case it is 3976 //**K.**//
271 -* {{mathjax}}\(T_0\){{/mathjax}}= The test temperature at which the thermistor is 10k {{mathjax}}\(\Omega\){{/mathjax}}, which in this case is 25 degrees celsius.
272 -* {{mathjax}}\(R_0\){{/mathjax}}= The resistance of the thermistor when it is 25 degrees celsius.
273 -* {{mathjax}}\(R_T\){{/mathjax}}= The live resistance of the thermistor.
270 +* {{mathjax}}\(Q\){{/mathjax}} = Waterflow through the equivalent orifice
271 +* {{mathjax}}\(C_D \cdot A_D\){{/mathjax}} = practical cross section of the orifice
272 +* {{mathjax}}\(\Delta P\){{/mathjax}} = Pressure difference between the two pressure sensors
273 +* {{mathjax}}\(\rho\){{/mathjax}} = Density of the cooling liquid
274 274  
275 +The sensor used on the AR26 car is the [[Bosch Motorsport PST-F 1>>https://www.bosch-motorsport.de/content/downloads/Raceparts/Resources/pdf/Data%20Sheet_70496907_Pressure_Sensor_Combined_PST-F_1.pdf]] and has the following transfer function for the output voltages based on pressure and temperature.
275 275  
277 +=== Pressure sensor ===
276 276  
279 +The pressure sensor build into the PST-F 1 has an supply voltage of 5 volts and has a output voltage range of 0.5 to 4.5 volts. The following formula shows the pressure based on the output voltage.
277 277  
281 +{{mathjax}}
282 +$$
283 +Q = C_D \cdot A_D \sqrt{\frac{2 \cdot \Delta P}{\rho}}
284 +$$
285 +{{/mathjax}}
278 278  
287 +
279 279  = Bill of Materials =
280 280  
281 281  == Circuit Board ==