Companies house don't have an entry for Anglo Scientific Instruments and their phone number is dead, they do list an Anglo Scientific in Hertfordshire though
https://beta.companieshouse.gov.uk/company/03914022
Companies house don't have an entry for Anglo Scientific Instruments and their phone number is dead, they do list an Anglo Scientific in Hertfordshire though
https://beta.companieshouse.gov.uk/company/03914022
Thanks!
Oh oh.
https://beta.companieshouse.gov.uk/company/03914022/officers suggests a company that just went under.
Some chiefs still on board, others and all the indians resigned. 'Indians', bearing in mind one of them lives in a castle.
Not an email address to be seen.
Bah. My luck, probably somewhere in Devon someone recently threw boxes of schematics and spare parts for this system into a dumpster.
SMD resistors over 1Gohm do exist. And if the resistors was suspended away from PCB it's likely that it is a very high value. Try to measure it with something that goes up to 10Gohm.
Doesn't look too bad to me, none of those resignations are particularly recent and the accounts look fairly healthy and up to date don't they?
What I would question is if they are the same company. Would be worth a phone call if I can find a number.
Doesn't look too bad to me, none of those resignations are particularly recent and the accounts look fairly healthy and up to date don't they?The last one was for 2015. Maybe 2016 is still coming.
Mysterious to me. Looking through the docs there, I can't find anything that even hints at what that company does.
Debtors 344,539, but only 250 in bank? How do they pay wages?
What I would question is if they are the same company. Would be worth a phone call if I can find a number.
I've always been curious about buying equipment like this. How would you know what it was used for, what was ran through it?
Seems easy enough to dump the stuff on eBay. I wonder if you contacted some of the parts suppliers if they would even allow you to return them for repairs because of the risk of exposure. Maybe they would have you sign something stating what was ran through it but with surplus ebay, there would be no way to know. Maybe it's a non issue.
Depending on what you want to do with the mass spec, it might not be such a good idea to use a classical rotary pump. For a clean system and if the turbo pump allows it, an oil free membrane pump might be the better choice.
Contamination can be a problem. If you send in things for repair, one usually has to sign paper-works to shown what you have done with it and that there is no hazardous contamination.
Getting a controller for the pump could be difficult. Maybe you can get some from Iran, including the stuxnet virus.
Even if the rotor is rotating free at low speed, there is still a chance the bearing may need service / oil change.
Normally the mass spec should not need a big pump. Small ones (e.g. 40 mm inlet) can get away without water cooling.
I don't know if you've already found it, but this collection of brochures mentions the DQC300M RGA from ASI/Larimax.
http://orionte.ipfn.ist.utl.pt/files/HugoAlves/Catalog.pdf
Thank you for the photos of the HP quad - very nice! The coils arrangement in the RF transformer is familiar to me . The quad itself is a thing of beauty - gold plated monolithic hyperbolic.
I still haven't hunted for a detailed theory of how quadrupole detectors actually work.
I still haven't hunted for a detailed theory of how quadrupole detectors actually work.
Some info here around p. 96:
https://www.leyboldproducts.com/media/pdf/01/ab/0a/FVT_Fundamentals_of_Vacuum_Technology_EN57d6d275b6c8b.pdf