|
Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
|
Thread Tools |
7th Sep 2019, 8:48 pm | #1 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,173
|
Sifam thermocouple ammeter
Hi Folks, I had a nice Sifam thermocouple 0-1A meter and one of the tech's overloaded it and blew the thermocouple. Any idea where I can get another ? Its at least 30 years old, with expanded scale at the higher end so not easy to convert to DC.
Thanks, Ed |
8th Sep 2019, 8:16 am | #2 |
Dekatron
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,637
|
Re: Sifam thermocouple ammeter
Pic Ed and what dia/dimensions ?
Andy.
__________________
Curiosity hasn't killed this cat...so far. |
8th Sep 2019, 8:56 am | #3 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,173
|
Re: Sifam thermocouple ammeter
Hi Andy, it has been blasted, but was mounted on a piece of thin paxolin about 10 *10 mm. Thin (0.2mm) wires lead to the actual unenclosed bead.
Ed |
8th Sep 2019, 6:17 pm | #4 |
Dekatron
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,637
|
Re: Sifam thermocouple ammeter
Hi Ed, think I got the wrong end of the stick, thought it was the meter movement itself you wanted. I'm pretty sure I have a panel meter somewhere that says thermocouple on it, it might have the thermocouple itself in it, will look tomorrow for you.
Andy.
__________________
Curiosity hasn't killed this cat...so far. |
9th Sep 2019, 1:33 pm | #5 |
Dekatron
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,637
|
Re: Sifam thermocouple ammeter
I dug out the meter I mentioned Ed, see pics. It has gizmo in it, that doesn't look like a shunt. Took a pic, but detail may not come out. Essentially it looks like two corriagated copper foil strips, suspended from two bits of paxolin in parallel. In the centre of these suspended from two "hooks", is a very fine wire, which is soldered to each copper strip, roughly in the centre of each. Does this sound like a thermo-couple?
It is not the same as one I've seen on a Marconi TF144H, which had a plastic housing. Yours for the postage if any use, Andy.
__________________
Curiosity hasn't killed this cat...so far. |
9th Sep 2019, 8:19 pm | #6 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,173
|
Re: Sifam thermocouple ammeter
Hi Andy, thanks for that I'll PM you my address.
Ed |