Products > Test Equipment
TH2830 vs TH2832
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mawyatt:

--- Quote from: Martin72 on July 02, 2023, 08:22:15 am ---
In any case, your report was not created by Tonghui itself, they don't take that much trouble... 8)

--- End quote ---

See below!! It came directly from Changzhou Tonghui Electronic Company Limited!! Even has a 7 digit document number, most comprehensive certificate of performance document we've come across.

Even include details on each reference used, which they use at least 30 individual reference devices. For example the 1nF reference @ 100KHz is 1.00060nF with DF 0.00010, and measured 1.00035nF, DF 0.00025, or @ 1KHz the reference 10.0100uF, DF 0.00370 measured 10.0091uF, DF 0.00370.

We're sure this is automated, but well done Tonghui for provided such detail, certainly builds one's confidence in this instrument's overall quality, and Tonghui instruments in general  :-+

Best,
mawyatt:

--- Quote from: luudee on July 02, 2023, 08:57:04 am ---
Regarding certificates, my unit also came with a 6 page calibration certificate ...

first two pages attached ...


luudee

--- End quote ---

Yep, that's the one we received, same test tek also!! Did your TH2832 have the capacitance measurements conducted at 200KHz?

Edit: Might be interesting to see how well these instruments did during factory verification. Here's the results from our instrument.

Best,
mawyatt:

--- Quote from: KungFuJosh on July 02, 2023, 04:05:40 am ---
--- Quote from: mawyatt on July 02, 2023, 03:12:39 am ---Our TH2830 came with a 6 page test cal report that was signed by the test tek & dated.

--- End quote ---

Ha! Mine didn't come with anything but a "calibration certificate void if removed" sticker on the back...which I removed immediately. 🤣

I know it's not good enough for actual calibration, but I connected probe to probe with the SDM3055X-E and the bias voltage was accurate.

If you were going to get it recalibrated, where would you send it?

--- End quote ---

Probably the usual Cal Labs here in US. Expect a hefty bill tho, detailed calibration, over these ranges, will be involved and expensive for sure.

BTW one of the reasons we recommended the TH2830 was the overall quality of this fine instrument. When we did our research a few years back, we ended up selecting this instrument based upon performance/cost and reliable/repeatable measurement expectations, and it has not disappointed :-+

Best,
Martin72:

--- Quote from: mawyatt on July 02, 2023, 01:11:39 pm ---See below!! It came directly from Changzhou Tonghui Electronic Company Limited!!

--- End quote ---

Exceptions confirm the rule.. ;) :)
KungFuJosh:

--- Quote from: luudee on July 02, 2023, 08:57:04 am ---Regarding certificates, my unit also came with a 6 page calibration certificate ...

first two pages attached ...

--- End quote ---

Could you please share more pages? I'd like to see what was tested in different ranges so I can do similar tests.
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