I can not tell how accurate it is but it is adjustable and both ends .
The meter manufacturer said meter is with in full scale 1.5٪ but with adjustments to zero
Dave
The meter manufacturer said meter is with in full scale 1.5٪ but with adjustments to zero
Dave
Hmmm-
Would be surprised if stagnant meter movement was due to sticky oil... But you- as as an old school mechanical watch technician- would certainly be an authority on the subject. Will be interested this outcome of your thinner (non gummy) oil approach-
We in the 'states have a product called 'penetrating oil'. Its an extremely low viscosity lubricant that was designed to help free locked nut/ bolt joints..
Definitely NOT gummy- LOL- maybe give this a whirl on the 'jewels'
Jim
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OK, fair enough. Of course, jewels in watches aren't, particularly where there is an end stone set for end float and supporting the shaft weight, but I haven't seen the jewels in a meter movement. I did wonder if they were simply a donut style 'ruby' without an end stone on the bottom of the shaft. Maybe the movement is meant to be damped in these Micronta's by design. Mine is certainly quite damped compared to another cheap lab voltmeter I have which positively jumps to attention. Edit: just thought, this might be because of the input resistance of the Micronta in comparison to the cheapy?
Penetrating oil (if you mean like WD40) is the bane of any watch or clock repairer! It eventually gums the works as the aromatics gas off.
Penetrating oil (if you mean like WD40) is the bane of any watch or clock repairer! It eventually gums the works as the aromatics gas off.
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This why I try not buy use equipment.
I always have to undo there fixing.
Like oil or replacing with substandard parts.
Dave
Hi Dave,
That's a problem with anything used. Everyone figures they are Mr Fix-it. Sometimes (often) out of greed. My life is repairing older test equipment and audio equipment. The crap I've seen would astonish you, some people can be so incredibly stupid!
Hi Stuey,
All I know is that the meter movement repair person, who was trained on how to do it was always adamant that there is never any lubrication of any kind used in meter movements. Both for the reasons you mentioned, and they introduce a variable that is temperature sensitive.
That's a problem with anything used. Everyone figures they are Mr Fix-it. Sometimes (often) out of greed. My life is repairing older test equipment and audio equipment. The crap I've seen would astonish you, some people can be so incredibly stupid!
Hi Stuey,
All I know is that the meter movement repair person, who was trained on how to do it was always adamant that there is never any lubrication of any kind used in meter movements. Both for the reasons you mentioned, and they introduce a variable that is temperature sensitive.
I can believe
Mr Fix-it can a money maker in some industries too.
Sounds like you had fun
I would only few times as hobby.
Dave
Mr Fix-it can a money maker in some industries too.
Sounds like you had fun
I would only few times as hobby.
Dave
Fun?
I guess. Earlier in time it was more fun. People did much better work and didn't mess with what they didn't know. These days people are into everything and do things that defy explanation and it is becoming very common. That makes repairing equipment disheartening at times.
I guess. Earlier in time it was more fun. People did much better work and didn't mess with what they didn't know. These days people are into everything and do things that defy explanation and it is becoming very common. That makes repairing equipment disheartening at times.
I can see being disheartening.
I work in different world and same thing having to undo .
The best saying is Do not fix what not broke
Dave
I work in different world and same thing having to undo .
The best saying is Do not fix what not broke
Dave
No worries, Chris, I totally understand and accept what you're saying. There are some jewels in watches that are run dry as well. In a meter there would be almost no wear to worry about too so oil wouldn't have that benefit either.
Cheers for the info.
Stu
Stuey
It is why repairing old can be disheartening. It hard to clear oil from meters. You see this lot if ever buying a used generator. It not running let's oil everthing including the meter. On generators they use a low cost volt meter and for around $10.00 you buy new one.
Any type of old meter it hard to find a replacement if at all disheartening.
Dave
It is why repairing old can be disheartening. It hard to clear oil from meters. You see this lot if ever buying a used generator. It not running let's oil everthing including the meter. On generators they use a low cost volt meter and for around $10.00 you buy new one.
Any type of old meter it hard to find a replacement if at all disheartening.
Dave
Hi Dave,
Well ... there are things to look after that haven't failed yet. Your advice is valid for something relatively new that doesn't have a known defect in a certain area.
In general I will agree with you under the condition that you're working on a device you are unfamiliar with and limit your activity to getting it running. Don't get fancy and for sure be careful of information on the internet. Most information out there is incomplete at best. Service manuals never cover information known to that trade, only things specific to that make and model. That's if you're lucky, some service manuals are incomplete or the information you need to know is scattered and you have to decipher and collect it.
Anyway, enough said. Most people working in areas they are not trained in do not have any idea of what they do not know. This goes for all trades and fields of study.
Well ... there are things to look after that haven't failed yet. Your advice is valid for something relatively new that doesn't have a known defect in a certain area.
In general I will agree with you under the condition that you're working on a device you are unfamiliar with and limit your activity to getting it running. Don't get fancy and for sure be careful of information on the internet. Most information out there is incomplete at best. Service manuals never cover information known to that trade, only things specific to that make and model. That's if you're lucky, some service manuals are incomplete or the information you need to know is scattered and you have to decipher and collect it.
Anyway, enough said. Most people working in areas they are not trained in do not have any idea of what they do not know. This goes for all trades and fields of study.
About only thing get the internet is schematics. A lot of schematics are from 1960's or someone's fantasy .
Dave
Dave
I'm talking about repair advice and upgrade advice. Schematics are factual unless running production changes have been made. You've always got to check. I'm talking about all equipment, test and audio. Test equipment normally has less silliness associated with it.
Most practicing technicians and engineers in any field do not have time to post on the internet, and certainly will not be producing a YOUTube video! People will offer advice without having actual trained experience, and they may argue their point to the mat while being dead wrong. That seems to be the nature of the internet. It's a place where anyone can be an expert. Others read this information, accept is as correct and act on it. They and their equipment may suffer for it.
Common sense is your best friend. That and talking to someone who actually worked in the field successfully. You're doing that, so you are on the right path.
Most practicing technicians and engineers in any field do not have time to post on the internet, and certainly will not be producing a YOUTube video! People will offer advice without having actual trained experience, and they may argue their point to the mat while being dead wrong. That seems to be the nature of the internet. It's a place where anyone can be an expert. Others read this information, accept is as correct and act on it. They and their equipment may suffer for it.
Common sense is your best friend. That and talking to someone who actually worked in the field successfully. You're doing that, so you are on the right path.
You would find the Marco Reps youtube videos quite interesting. Here's one in which he repairs a Fluke 731B Precision Voltage Standard.
Isn't the beating heart of the Keysight 3458A the LTZ1000 voltage reference?
Hi Jack,
Some exciting test gear looks so boring to outside viewers. Just because something is old, or an old design doesn't mean it is obsolete, or that new designs are better. Especially not these days!
Yes it is. But I think they enhanced something. I did hear the reference was improved by Fluke.
Some exciting test gear looks so boring to outside viewers. Just because something is old, or an old design doesn't mean it is obsolete, or that new designs are better. Especially not these days!