Flow sensor "calibration"

[Sailing_Nut]

I have an Alphacool ES flow and temperature sensor in a custom cooling loop.

I want to know how/if I can enter values that convert the RPM signal to L/H values as specified by Alphacool.

Thanks in advance!

[Arctucas]

https://www.alphacool.com/download/ENG_1019925_Alphacool_ES_flow_and_temperature_indicator_HighFlow_with_RPM-signal_(flow-measurement).pdf

Determine the RPM and do the math?

 

[Sailing_Nut]

Thanks for the info, but I was more asking where in Adia64 I can enter the information. All I see is the ability to create a "correction" in the settings with a ratio and or offset. To even begin to see if I can calculate a proper offset I would need to know the current curve that Adia64 is using. Also, if the flow sensor isn't linear or a different linearity than what is used in Adia64 it won't work with one simple offset.

[Fiery]

8 hours ago, Sailing_Nut said:

Thanks for the info, but I was more asking where in Adia64 I can enter the information. All I see is the ability to create a "correction" in the settings with a ratio and or offset. To even begin to see if I can calculate a proper offset I would need to know the current curve that Adia64 is using. Also, if the flow sensor isn't linear or a different linearity than what is used in Adia64 it won't work with one simple offset.

AIDA64 doesn't use any curve.  When it shows a RPM reading, the direct (raw) RPM value comes from the sensor that provides the reading for it.  You can use the AIDA64 Correction facility to apply a ratio and/or an offset to any given reading, but you cannot convert a reading to go from one measurement unit to the other.

[Arctucas]

Say you have 1100 rpm when you connect the flow sensor to a fan header.

 

That would be ~255 L/H.

 

In AIDA64 you would determine which fan header was reading the flow sensor, Preferences>Correction>New Fan (X), To convert RPM to L/H, (255÷1100 = 0.231....)

Enter .231 in the ratio field, and you should see 255 value reported by that sensor in Sensor Panel. Then rename the Fan to Flow or whatever.

 

 

[Sailing_Nut]

@Arctucas Thanks for the information! I'm a bit confused because I already see the RPM and Flow in Aida64 without me doing anything. In thinking about it, my mobo must be reporting  these somehow that Aida64 is picking it up. So, I really need to get the values reported from my mobo correct. The odd thing is that the value I see in Aida64 is 51 L/H but the Asus tool is reporting 8 L/M (480 L/H)

 

 

[Arctucas]

2 hours ago, Sailing_Nut said:

@Arctucas Thanks for the information! I'm a bit confused because I already see the RPM and Flow in Aida64 without me doing anything. In thinking about it, my mobo must be reporting  these somehow that Aida64 is picking it up. So, I really need to get the values reported from my mobo correct. The odd thing is that the value I see in Aida64 is 51 L/H but the Asus tool is reporting 8 L/M (480 L/H)

 

 

 

According to the chart provided by Alpha, @857 RPM the flow would be ~209 L/H.

 

I have no clue as to the Flow Sensor reading, perhaps Asus could answer what is happening there? Frankly, I never had faith in any Asus software, but that is just me.

[Rash]

hi,

 

I did the math, ratio 0.17 offset 66 seems to fit best

[ldwilliams.uk]

A friend says that ratio 0.18, offset 10 fits well

Correction to this -

Alphacool look to have changed this, these are the corrected figures -

Ratio = 0.1709018653

Offset = 63.94619272

Which produces the following results - not perfect, but usable I feel

'rounded' is the result that would be shown.

RPM	L PER HR	rounded
35	75	70
80	80	78
100	85	81
127	90	86
156	95	91
188	100	96
215	105	101
255	110	108
290	115	114
320	120	119
350	125	124
380	130	129
420	135	136
485	140	147
515	145	152
560	150	160
580	155	163
605	160	167
630	165	172
660	170	177
675	175	179
695	180	183
720	185	187
745	190	191
775	195	196
810	200	202
840	205	208
860	210	211
885	215	215
915	220	220
940	225	225
955	230	227
975	235	231
1005	240	236
1035	245	241
1075	250	248
1100	255	252
1130	260	257
1160	265	262
1190	270	267
1220	275	272
1260	280	279
1290	285	284
1320	290	290
1350	295	295
1380	300	300
1410	305	305
1440	310	310

Edited March 25, 2024 by ldwilliams.uk
Alphacool have revised the product, resulting in new formula