Used many years ago for CRT Anode (and other sections) testing for the presence of high voltages.
Most multimeters are pretty useless up above 1KV potential, not only because they will not read higher but the insulation characteristics of those little probes would make attempts at testing high voltages very hazardous!
So, not much in the way of CRT equipment these days but still useful where very high voltages can be expected i.e anode voltages of high power RF amplifier output stages
KAISE HIGH VOLTAGE PROBE
Made In Japan
Model: SK-9000
600M Ohm input impedance (2x 300M Ohm in series within the red probe)
Two switchable ranges: 15KV or 30KV FSD
Analog readout on the integral meter *** this is the issue, the meter needs "attention"
It is a pretty cool looking test instrument and gives assurance to the user that they are not going to get "zapped" while testing - high voltage testing can be a risky undertaking if not done correctly (see the instructional video below)
There is a socket at the base marked as "output" - I never used this but I would assume an external meter could be used here to take measurements, not just the built-in meter. The new owner would need to check this for themselves, it will not be high voltage but I just don't know what signal is being sent to this socket.
I do not have the instruction manual any longer - NOT SUPPLIED
I also used to have the box but that fell apart over the years!
CONDITION:
Very clean (THIS IS IMPORTANT AS ANY SURFACE CONTAMINATION COULD ALLOW SURFACE CONDUCTION OF THE VOLTAGES UNDER TEST - STRAIGHT TO YOUR HAND!)
No broken body parts (plastic)
Meter is NOT working correctly (sticks above the zero rest stop)
The meter face measures 48mm wide x 43mm high
The scale is a screw on type (2x screws used to fix it in place) so if you could find another meter of the same type, just change over the scale plates.
Alternately, if you are skilled at instrument repair, it may be possible to fix the sticking pointer problem - then there is no need for another meter.
I have made no attempt to repair the meter, far too delicate for me with shaking hands etc!
TESTING:
Well I used this probe for years with all sorts of CRT based equipment but of course there isn't a lot of use for one of these probes now. I can only think that it may be useful for those wanting to safely check the high voltages on their tube based high power RF amplifiers, say something based on an Eimac 4CX350 which can have up to 2KV on the anode - it is unlikely an audio amplifier will be running the same sort of voltages as most are EL34 or similar based with only around 400V on the anodes. Another thought was I have seen some DTE gear (destructive test equipment) which does generate very high voltages, to test for insulation breakdown for example but that is not a "common" instrument to have around!
HERE IS A VIDEO THAT SHOULD HELP ANYONE WHO IS CONTEMPLATING TESTING HIGH VOLTAGES
PLAYING AROUND WITH HIGH VOLTAGE MUST BE TAKEN SERIOUSLY - IT CAN KILL HUMANS! (I like the guy in this video, if you make a mistake it might "ruin your day"! Giving yourself a jolt of high voltage could certainly "ruin your day"!
