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Maximum flow of aquastream XT

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aster1x

Junior Member

Beiträge: 12

Maximum flow of aquastream XT

Mittwoch, 23. Februar 2011, 09:04

I have an Aquastream XT Ultra connected to a simple loop consisting of one EK 250 reservoir and one Aquacomputer high flow sensor. Nothing else for test purposes only. The sensor at the Aquasuite has been set to 169 impulses per Liter. The maximum frequency I can get from the the Aquastream is 70-72 Hz achieving a flow of 243 Lt/Hour as reported by Aquasuite. After the 70Hz the pump falls back to around 60 Hz and starts to increase speed gradually until it reaches the 70 HZ and then stabilises at that speed. Is this normal?

What is the maximum Hz the Aquastream can reach and how is this achievable? Also I can not see any markings on the AC flow sensor for in or out of the water flow. Does it make any difference how you connect the sensor?



Looking forward to your responses.



Aster1x

Dr. Shoggy

Sven - Admin

Beiträge: 18 130

Mittwoch, 23. Februar 2011, 10:38

The pump is using an automatic frequency detection. It works in the way that it rises the frequency up until a specific error limit (internal measurements) has been reached. Then it stops and starts over again while it will not go beyond the detected frequency limited from the run before. This routine can repeat around three times until the pump has reached its maximum stable frequency.

If you set a frequency by hand that is beyond a stable frequency the pump will fall back to a lower frequency.

You can only reach very high frequencies in a loop with a very high resistance. It is just a mechanical thing that pump will run more stable in such an environment.

All in all it's nothing to worry about. Your pump is working correctly.

The flow sensor has no specific in and out. You can use it like you want to.

aster1x

Junior Member

Beiträge: 12

Flow sensor calibration and pump speed control.

Mittwoch, 23. Februar 2011, 19:31

Thank you very much for the reply.

However is the flow measurement of the AC high flow sensor affected from the size of the tubes used in the loop? If the size of the tubes (inner diameter) affects the measuring ability of the sensor, then it means that the impulses per Liter must be changed to a different value than the reference value given by AC. This can be done by measuring in fact the litres flowed per minute into a bucket and doing the averaging of the results, and then changing the value of impulses per liter in the aquasuite. If you agree with my previous argument, then for which tubing size has AC measured and defined the impulses per liter in the high flow sensor manual?



In the Aquasuite the pump speed can be set either to automatic or manual. However when we select the automatic, which enviromental variable is used to control the pump speed? In other words, is it possible to change the operational speed of the Aquastream XT pump according to the internal to the pump or the external temperature sensor? in the similar way that the fan speed is proportional to the external temperature sensor. Is this possible with the aquastream XT and the aquasuite alone or it can be done with the aquaero?



Thanks for your support.



Aster1x

Dr. Shoggy

Sven - Admin

Beiträge: 18 130

Donnerstag, 24. Februar 2011, 09:50

The correct value for the sensor is 169 no matter which kind of tubing you are using since it has no effect on the measuring.

The automatic mode sets the highest possible stable frequency which is detected by measuring some sensor values from the controller to determine if the rotor is running stable or unstable. There is no way to adjust the frequency by using a temperature value or something else.

aster1x

Junior Member

Beiträge: 12

Maximum flow of aquastream XT

Donnerstag, 24. Februar 2011, 10:02

Thanks shoggy,



However even with the use of an aquaero it is not possible to control the pump rotational speed according to a temperature? If not then what is the purpose of connecting the Aquastream to the aquaero?



Aster1x

Dr. Shoggy

Sven - Admin

Beiträge: 18 130

Donnerstag, 24. Februar 2011, 11:13

No, that is not possible in any way.

When you connect the pump to the aquaero you can see a few sensor and monitoring values, adjust the frequency (manual) or deaeration mode and you also have an alarm option when the pump encounters a problem.

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