Fortress metal detector
Fortress metal detector
(OP)
Hi
I have a Fortress Phantom metal detector which lost power on Wednesday. Upon investigation, I found the power supply (240vac in, 24vdc 1.7a and 5vdc 1a out)to be faulty. Due to not being able to get one of these immediately, I purchased an Omron 24vdc power supply and 5vdc power supply and fitted them. Once powered up I couldn't get the detector to stabilise. I've gone through the usual noise filters, phase angles and sensitivity inside the metal detector settings etc and managed to settle it down with the occasional fluctuation (detection) but this won't then detect the metal test pieces. I've installed a powr supply from another fortress unit and this has removed the issue but can't understand what the difference is. Has anybody any idea what would be causing this? Would a power supply filter remove some of the noise the detector is currently seeing? Any help gratefully appreciated.
Regards
Stuart
I have a Fortress Phantom metal detector which lost power on Wednesday. Upon investigation, I found the power supply (240vac in, 24vdc 1.7a and 5vdc 1a out)to be faulty. Due to not being able to get one of these immediately, I purchased an Omron 24vdc power supply and 5vdc power supply and fitted them. Once powered up I couldn't get the detector to stabilise. I've gone through the usual noise filters, phase angles and sensitivity inside the metal detector settings etc and managed to settle it down with the occasional fluctuation (detection) but this won't then detect the metal test pieces. I've installed a powr supply from another fortress unit and this has removed the issue but can't understand what the difference is. Has anybody any idea what would be causing this? Would a power supply filter remove some of the noise the detector is currently seeing? Any help gratefully appreciated.
Regards
Stuart
RE: Fortress metal detector
"lost power on Wednesday"
But, what caused the "lost power?" Is it strictly the power supply? Or did something else cause the power supply to fail?
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RE: Fortress metal detector
Component failure inside the power supply caused the supply fuse to blow.
RE: Fortress metal detector
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RE: Fortress metal detector
RE: Fortress metal detector
Another possibility is the magnetic emissions from the new PSs are impacted the detector itself (magnetic fields). Perhaps the original PS has some tight specs in terms of not impacting the system.
RE: Fortress metal detector
That's more what I was looking for - Interference from the new power supplies causing the metal detector to be erratic. Metal detectors are so fussy, having 2 detectors in close proximity, using frequency inverters or motors to close to them all trigger false alarms. So is there something in these new power supplies that is possibly being filtered in the original power supply and will a 'passive filter' do the same job? Someone suggested 'dirty noise' from the power supplies, presume this is humming?
RE: Fortress metal detector
If you can get some linear supplies after checking VE1BLL's suggestions they'd probably work for you.
Got a close-up picture of your old supply?
Keith Cress
kcress - http://www.flaminsystems.com
RE: Fortress metal detector
The 'Linear PS' is a very good suggestion too.
RE: Fortress metal detector
RE: Fortress metal detector
RE: Fortress metal detector
RE: Fortress metal detector