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Samstag, 21. Februar 2015, 14:01
Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »Dintid« (21. Februar 2015, 14:03)
You definitely want to talk to the support group at aquacomputer about that.
They advised me to NOT have angled fittings near the inflow to the sensor, because turbulence from the fitting would confuse the device.
The instruction was to leave as long a straight run into the sensor as possible.
The leavings in that bore may create turbulence and possibly yield incorrect results.
Zitat
4. Flow sensor mps flow 100/200/400
4.1. Technology and specific characteristics
The sensors of the mps flow series are technically based on a differential pressure
measurement and do not contain any rotating components. Due to the high sensitivity
of the integrated pressure sensors, the sensors pose only a minimal flow resistance.
In addition, the sensors are extremely compact.
On the other side, this concept has some limitations regarding compatibility with
different types of hoses and fittings. As a general rule, only straight fittings should
be used to connect a mps flow sensor to the cooling system. Angular fittings alter
the flow through the sensor and thereby may falsify flow detection up to the point
where the sensor is rendered useless.
Zitat
5. Flow sensor „high flow USB“
5.1. Technology and specific characteristics
The flow sensor „high flow USB“ features an integrated impeller which is driven by
coolant flow through the sensor. Movement of the impeller is electronically detected
and converted into a flow value.
5.2. Integration into the cooling loop
Install suitable fittings into the threads of the sensor. Gently tighten the fittings by
hand and do not use excessive force in order not to damage the threads in the
plastic body. Connect both sides of the sensor to your cooling loop, flow direction
is not relevant for this sensor.
The fittings at the inlet may be the culprit. Snippet below from MPS Manual
Zitat
4. Flow sensor mps flow 100/200/400
4.1. Technology and specific characteristics
The sensors of the mps flow series are technically based on a differential pressure
measurement and do not contain any rotating components. Due to the high sensitivity
of the integrated pressure sensors, the sensors pose only a minimal flow resistance.
In addition, the sensors are extremely compact.
On the other side, this concept has some limitations regarding compatibility with
different types of hoses and fittings. As a general rule, only straight fittings should
be used to connect a mps flow sensor to the cooling system. Angular fittings alter
the flow through the sensor and thereby may falsify flow detection up to the point
where the sensor is rendered useless.
If you cannot alter the loop, perhaps you could try Flow sensor "high flow USB" G1/4.
It looks to be about 20mm wider, but uses a mechanical impeller which may not be influenced by turbulence. Snippet below from MPS Manual
Zitat
5. Flow sensor „high flow USB“
5.1. Technology and specific characteristics
The flow sensor „high flow USB“ features an integrated impeller which is driven by
coolant flow through the sensor. Movement of the impeller is electronically detected
and converted into a flow value.
5.2. Integration into the cooling loop
Install suitable fittings into the threads of the sensor. Gently tighten the fittings by
hand and do not use excessive force in order not to damage the threads in the
plastic body. Connect both sides of the sensor to your cooling loop, flow direction
is not relevant for this sensor.
The fittings at the inlet may be the culprit. Snippet below from MPS Manual
Zitat
4. Flow sensor mps flow 100/200/400
4.1. Technology and specific characteristics
The sensors of the mps flow series are technically based on a differential pressure
measurement and do not contain any rotating components. Due to the high sensitivity
of the integrated pressure sensors, the sensors pose only a minimal flow resistance.
In addition, the sensors are extremely compact.
On the other side, this concept has some limitations regarding compatibility with
different types of hoses and fittings. As a general rule, only straight fittings should
be used to connect a mps flow sensor to the cooling system. Angular fittings alter
the flow through the sensor and thereby may falsify flow detection up to the point
where the sensor is rendered useless.
If you cannot alter the loop, perhaps you could try Flow sensor "high flow USB" G1/4.
It looks to be about 20mm wider, but uses a mechanical impeller which may not be influenced by turbulence. Snippet below from MPS Manual
Zitat
5. Flow sensor „high flow USB“
5.1. Technology and specific characteristics
The flow sensor „high flow USB“ features an integrated impeller which is driven by
coolant flow through the sensor. Movement of the impeller is electronically detected
and converted into a flow value.
5.2. Integration into the cooling loop
Install suitable fittings into the threads of the sensor. Gently tighten the fittings by
hand and do not use excessive force in order not to damage the threads in the
plastic body. Connect both sides of the sensor to your cooling loop, flow direction
is not relevant for this sensor.
Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »Dintid« (2. März 2015, 23:53)
no offense taken... I realized you were thinking out loud.
I managed to get about 90 to 100 mm of straight run into the sensor on mine. Hoping it's enough.
Dieser Beitrag wurde bereits 4 mal editiert, zuletzt von »Dintid« (3. März 2015, 21:38)
One thing I've noticed is how the MPS seems to Loose the settings after comple power-off. Ie, I have to reset flow-calibration parameters..
Zitat
12.2. Sensor configuration flow sensor mps flow
The flow sensors of the mps flow 100/200/400 sensors are based upon a differential
pressure measurement around a nozzle element that is greatly affected by
installed fittings and hoses. Please start by selecting the sensor type, then select the
type of fittings you have installed into the sensor. Confirm your selection by clicking
“Import calibration data”.
For accurate flow measurement, the zero flow value must be calibrated regularly,
therefore “Automatic calibration of zero flow” is activated by default. If activated,
the sensor will perform a calibration of the zero flow value when the pump is not
running, for example if the PC is in standby and the sensor is still powered by USB
connection. If you decide not to use automatic calibration, you will have to manually
perform a calibration on a regular basis by clicking “Set current flow to zero”
when the pump is not running.
One thing I've noticed is how the MPS seems to Loose the settings after comple power-off. Ie, I have to reset flow-calibration parameters..
Do you have the USB connection implemented? MPS manual
Zitat
12.2. Sensor configuration flow sensor mps flow
The flow sensors of the mps flow 100/200/400 sensors are based upon a differential
pressure measurement around a nozzle element that is greatly affected by
installed fittings and hoses. Please start by selecting the sensor type, then select the
type of fittings you have installed into the sensor. Confirm your selection by clicking
“Import calibration data”.
For accurate flow measurement, the zero flow value must be calibrated regularly,
therefore “Automatic calibration of zero flow” is activated by default. If activated,
the sensor will perform a calibration of the zero flow value when the pump is not
running, for example if the PC is in standby and the sensor is still powered by USB
connection. If you decide not to use automatic calibration, you will have to manually
perform a calibration on a regular basis by clicking “Set current flow to zero”
when the pump is not running.
Dieser Beitrag wurde bereits 2 mal editiert, zuletzt von »Dintid« (4. März 2015, 07:58)
I haven't fired mine up yet... waiting for a couple items so I can fill it..Zitat
Yuors do the same?
Are you saving the settings by clicking on the little floppy disk icon?Zitat
It drops the settings for tubes as well. That doesn't seem like normal to me. At least it isn't Automatic calibration as I have to configure the parameters before it can auto-calibrate.
I haven't fired mine up yet... waiting for a couple items so I can fill it..Zitat
Yuors do the same?
Are you saving the settings by clicking on the little floppy disk icon?Zitat
It drops the settings for tubes as well. That doesn't seem like normal to me. At least it isn't Automatic calibration as I have to configure the parameters before it can auto-calibrate.
I recently used Feser corrosion blocker for the first time, since I had it at home and never tried it. It clouded the water a lot, but after a day of the loop running it has almost fully cleared.
Kind regards,
Boris.
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