According to its spec sheet, a 3590S-1-501 is unsealed against water
A 3590S-3-501 (plastic bushing) or 3590S-4-501 (metal bushing) variants
are sealed against a water jet from any angle (IP65)
On 6/19/2009 2:19 PM, Dick Green WC1M wrote:
> The most recent pots I got from TIC are Vishay model 534. It's a 10-turn
> pot, 500 ohms +/- 5%, linearity +/- .25%.
> However, I've seen quite a few of these pots fail due to moisture ingress,
> sometimes accompanied by freezing. I have recently obtained what may be a
> superior replacement: Bourns model 3590S-1-501. This pot has identical specs
> and dimensions to the Vishay pot, but has a plastic body and shaft, as
> opposed to the Vishay's metal body and shaft. Here is a link to the spec
> N3RS told me he replaced the stock pot with the Bourns model quite a few
> years ago and has not had any problems since. He believes the Bourn pot is
> better sealed against moisture than the pot provided by TIC. I have three of
> the Bourn pots on hand but have not attempted to disassemble them to see if
> they are in fact better sealed. My sense is that moisture trickles down the
> shaft and into the body of the pot because the shaft is in a vertical (up)
> orientation. Although the motor case is sealed, eventually moisture finds
> its way to the pot, either through leaks in the case or condensation. If the
> Bourn pot has an O-ring or some other type of seal at the shaft-body
> interface, it may be more resistant to moisture than the Vishay pot.
> 73, Dick WC1M
>> -----Original Message-----
>> From: Henk Remijn PA5KT [mailto:firstname.lastname@example.org]
>> Sent: Friday, June 19, 2009 11:31 AM
>> To: Tower Talk
>> Subject: [TowerTalk] Tic rotor potmeter replacement?
>> I own a Tic rotor 1032 and the potentiometer stopped working. I know it
>> can be a cabling problem, but if the potmeter is the problem I want to
>> have the right parts available I would like to buy a replacement potmeter.
>> Does someone know what potmeter is inside?
>> 73 Henk PA5KT
>> Henk Remijn PA5KT
>> email: email@example.com
>> www: www.remijn.net
> TowerTalk mailing list
TowerTalk mailing list