AC Line filtering
AC Line filtering
(OP)
I have installed a magnetostrictive level system on a tank in a farm and I have some problems.
Since the voltage on the farms isn't stable and bad filtered during the milking when all the motors are on I get errors on the controller of the sensor. Possible cause is that the power noise isn't dischared to the ground effectively.
I have been told that the solutiion is to use a active filtering device such as a an ONLINE type UPS. The problem is that the smaller I found is 750VA and I need no more than 30-40VA. The cost of the UPS is also very high.
Is there any other more cheap solution?
Since the voltage on the farms isn't stable and bad filtered during the milking when all the motors are on I get errors on the controller of the sensor. Possible cause is that the power noise isn't dischared to the ground effectively.
I have been told that the solutiion is to use a active filtering device such as a an ONLINE type UPS. The problem is that the smaller I found is 750VA and I need no more than 30-40VA. The cost of the UPS is also very high.
Is there any other more cheap solution?





RE: AC Line filtering
In general, that's not how noise and grounding works. Noise, like any other signal, travels around circuits in accordance with circuit theory. It doesn't necessarily want to be "discharged" to ground. (An exception is lightning that certainly does seek earth ground.)
"UPS. ...I need no more than 30-40VA. The cost of the UPS is also very high."
Is there a Costco or similar big box store near where you live? UPS sufficient to power a PC (serveral hundreds watts) are under $200.
A better long term solution (because UPS systems are, ironically, relatively unreliable) might be to fix the source of the problem. Perhaps the power company needs to provide a higher current service. Perhaps the wiring could be rearranged to avoid voltage drops.
RE: AC Line filtering
TTFN

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RE: AC Line filtering
additionally most level transmitters also contain time delay filtering to eliminate splashing effects, if you are lucky, yours may be adjustable
RE: AC Line filtering
RE: AC Line filtering