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Post by CampKohler (Sacramento CA) on Mar 22, 2018 13:25:31 GMT -5
I got a free Harbor Freight Tools Model 98025 DVOM with a coupon. This is offered every month or so. It's a cheap little thing, but the price was right and if it gets beat up being carried around in the car, it's no great loss. One use for it is to embed it in some project. You power it from a 9VDC source, set the controls and build it into a power supply or whatever. I was reading the operating instructions and noticed statements 3) & 4) in the Maintenance section: Attachment Deleted Click to enlarge; click Back to return.How can you replace the battery when there are no replaceable parts? It's one of life's deep and unsolvable mysteries. |
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rajah
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Post by rajah on Mar 27, 2018 20:02:00 GMT -5
CK, I knew I'd find you here. I have several of those Centek meters in various places for convenience including some in knock-about tool bags and on my workbench at home and at the office. I also have some Fluke meters, too for measurements I can't make with the Centek. The battery is definitely replaceable and is a regular 9 Volt battery.
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Post by picturefreak on Mar 28, 2018 11:40:30 GMT -5
Did you know... that Hazard Fraught Tools cheapened their "free" meter even more? | Before | After | | Max ACV | 750V | 250V | | Max DCA | 10A | 5A | | Test Lead Length | 32" | 24" | | Test lead material | Copper | Copper Coated Aluminum | | Test lead gauge | 20 (10 amps is kind of rough on this) | 18 (works fine with 5 amps since it's juts CCA) | | Fuse | Replaceable | Soldered |
I suppose with the fuse soldered, what next, they should just solder the battery too - then this meter really does become a disposable! |
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Post by CampKohler (Sacramento CA) on Mar 30, 2018 2:29:50 GMT -5
I never new there were two generations of that meter. Are there two different model numbers as well? I noticed that the latest one I got had probes that the tips would barely stay on the handles. Also on the old ones, the test lead wire would detach from the probe tip regularly, and there was no way to reattach it. So you wound up with a pile of them with no good test lead sets.
I remember now that it has a 10ADC range, so it's the older model.
I suppose you'd have to expect that it. kind of cheapening when they repeatedly offer it free with any purchase—a loss leader meter. But I am going to try to compare them.
PF: I am going to take a look at your table's code.
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Post by CampKohler (Sacramento CA) on Mar 30, 2018 3:07:18 GMT -5
A digression for table madness: Before:
[table]
[tr][td]Before[/td][td]After[/td][/tr]
[tr][td]Max ACV[/td][td]750V[/td][td]250V[/td][/tr]
[tr][td]Max DCA[/td][td]10A[/td][td]5A[/td][/tr]
[tr][td]Test Lead Length[/td][td]32"[/td][td]24"[/td][/tr]
[tr][td]Test lead material[/td][td]Copper[/td][td]Copper Coated Aluminum[/td][/tr]
[tr][td]Test lead gauge[/td][td]20 (10 amps is kind of rough on this)[/td][td]18 (works fine with 5 amps since it's juts CCA)[/td][/tr]
[tr][td]Fuse[/td][td]Replaceable[/td][td]Soldered[/td][/tr]
[/table]
[table][tbody][tr][th][/th][th]Before[/th][th]After[/th][/tr][tr][td]Max ACV[/td][td]750V[/td][td]250V[/td][/tr][tr][td]Max DCA[/td][td]10A[/td][td]5A[/td][/tr][tr][td]Test Lead
Length[/td][td]32"[/td][td]24"[/td][/tr][tr][td]Test lead
material[/td][td]Copper[/td][td]Copper
Coated
Aluminum[/td][/tr][tr][td]Test lead
gauge[/td][td]20[sup]1[/sup][/td][td]18[sup]2[/sup][/td][/tr][tr][td]Fuse[/td][td]Replaceable[/td][td]Soldered[/td][/tr][/tbody][/table]
Table Notes:
1. 10 amps is kind of rough on this.
2. It works fine with 5 amps since it's just CCA.
| Before | After |
|---|
| Max ACV | 750V | 250V | | Max DCA | 10A | 5A | Test Lead
Length | 32" | 24" | Test lead
material | Copper | Copper
Coated
Aluminum | Test lead
gauge | 201 | 182 | | Fuse | Replaceable | Soldered |
Table Notes: 1.10 amps is kind of rough on this. 2. It works fine with 5 amps since it's just CCA.
Notice how using notes to move material outside the table and inserting carriage returns into the Cells with long text to wrap the text made a huge difference in the appearance of the table. Using table header tags instead of table data tags puts bold on the column headers. These additional suggested steps would pretty up things; 1, Modify table row tags to include lines around every cell of the table. 2. Add font size tags to the table notes to make them the same size as the table's text. Post Notes: 1. The table body tags were automatically inserted into After by the forum software as it usually does, but they weren't present in Before, a puzzlement! |
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Post by picturefreak on Mar 30, 2018 3:39:51 GMT -5
Oh give me a break, I had just one chance to write up the table *without errors* and I made some errors...at least it was "close enough" :-P (remember, not being registered, I can't edit to fix it...  Luckily bbcode tables is pretty close to raw html.) Anyway, I'm sure they have different model numbers, I believe the 98025 item is the older model. However it's probably easy to tell, just look for the 5A and/or the 250V limit and you'll have the "new and diminished" model. |
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Post by picturefreak on Mar 30, 2018 3:42:52 GMT -5
Oh... and yes, there were at least 4 or 5 versions of the free meter with different item numbers. I don't know what the differences were.
A long long time ago they even had yellow-cased meters instead of the current red. I don't recall the item number for that model if it differed at all.
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Post by picturefreak on Mar 30, 2018 13:43:11 GMT -5
Oh...so it looks like the shortened leads already showed up in 98025.
63604
63758
63759 - 24" test leads, 5A 250VAC/DC, no longer branded Cen-Tech
69096
90899 - 32" test leads, 10A, 750VAC/1KVDC
98025 - 24" test leads, 10A, 750VAC/1KVDC
The wires do NOT look like 18 or 20 gauge, they look more like 22 or smaller.
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Post by CampKohler (Sacramento CA) on Mar 30, 2018 17:45:50 GMT -5
They are irritatingly small!
PS: Today we are having a registration sale. It's only half the normal price.
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Post by picturefreak on Mar 30, 2018 18:00:57 GMT -5
I am beginning to loathe the bboard software, discounts aren't enough - I would need a refundable credit to register at this time  |
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Post by picturefreak on Apr 2, 2018 21:34:31 GMT -5
I went to the local HFT and saw the three versions: 63759 90899 98025. Interestingly they hid the gimped 63759 in the back of the rack of 90899 and 98025's. I'd imagine they should get rid of the crappy 63759s first...
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Post by picturefreak on Apr 2, 2018 21:45:19 GMT -5
Looks like 63604 and 63758 are also gimped units. No indication of lead construction or lengths. The 69096 looks like a standard unit, but with 29.5" leads. So looks like: make sure you're getting 69(xxx) or more! Easy to remember! |
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Post by CampKohler (Sacramento CA) on Aug 9, 2018 19:20:42 GMT -5
I just got an HFT ad with a free DVM coupon, so I will get another one on my next trip. The last one I got had the probe tip practically break off. I think the first thing to do is to when you get one is to slip a short length of plastic tube (from a ball point pen, etc.) over the last 1/2" of the probe's plastic to reinforce it. I was really surprised how easily the last one broke off; a #2 pencil can take more pressure! Even better, break off the tip, unsolder it from the lead and make a new probe from a clear-plastic ball point pen, either epoxying the tip in place or pressing it into a slightly-undersized hole drilled into the original pen's tip. That should stand the guff.
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Hazard Fraught Tools
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Post by Hazard Fraught Tools on Aug 10, 2018 8:23:28 GMT -5
I have a few of them. I'm sort of ticked the "good" HFT meter I got a few years back that costed 40 quid died on me. Can't totally blame it -- I modded it. But I'm back to using non-HFT meters as my go-to.
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Luckily bbcode tables is pretty close to raw html.)