Products > Test Equipment
UNI-T UT61E Multimeter teardown photos.
analogix:
Yes, they should indeed update the photo which doesn't show it to be GS-approved.
I contacted Reichelt and they replied saying that their version is GS-approved as shown in the German manual linked from their site.
I noticed that the specs on the Reichelt page says "Safety: Cat II 600 V, CAT III 300 V". I suppose these differ from the "Chinese" version.
I'd order it from Pinsonne if I could, but they don't deliver to Norway.
About getting the "Corrected" version of the UT-61E as pointed out by Snovotill: perhaps this only concerns the "Chinese" version as the "European" GS version is already safe (or should I say "a little safer"?) ?
mac.6:
Hello All,
I have an UT-61E clone (voltcraft) that got its LCD screen broken. It seems still functional anyway.
Does anybody knows a spare part vendor?
It will be a pity to throw it away or recycle it as a datalogger...
snovotill:
--- Quote ---About getting the "Corrected" version of the UT-61E as pointed out by Snovotill: perhaps this only concerns the "Chinese" version as the "European" GS version is already safe (or should I say "a little safer"?) ?
--- End quote ---
The Chinese version is what I have and it has no MOV's installed in the "SGx" positions. Regarding the "uncorrected" schematic: it's just plain wrong so please ignore it and download the "corrected" one.
There are four MOV's installed in the GS version as per pictures in other posts, but the duplicate instance of SG4 above the COM jack is unpopulated and is a smaller part, so likely intended for a true spark gap.
SG2, SG3, and SG4 in the GS version have part number ZOV 07D-751K per photos in other posts and this decodes as follows:
ZOV = Zinc Oxide Varistor (plain vanilla MOV)
07D = 7mm diameter disk (so about 50 Joules)
751 = 750V (so 460VAC or 615VDC max operating)
K = 10% tolerance on the rated voltage spec.
HOWEVER there is no part number listed for SG1 on the schematic, so I wonder if someone with the GS version could kindly have a look inside their unit and report back to the forum with the part number for SG1 at left of the PCB. A close-up photo of the smiling MOV could be nice too :D.
Schematic reference: http://www.eserviceinfo.com/downloadsm/68103/UNI-T_UT61E.html
thanks ;)
joeqsmith:
A few higher res pictures of 61E after replacing both fuses, fuse holders, PTCs, adding MOVs, cutting the traces for adding the resistors, adding the adaptive backlight.
joeqsmith:
Also shown is the temperature compensation that I came up with after swapping all the parts in the reference circuit. This was just a BAV199 and a 6.65K in series across C17. Note that the original meter came with a tant and I had replaced with a ceramic.
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