Author Topic: Bunch of keysight U1252B meters around  (Read 98653 times)

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Offline ivaylo

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Re: Bunch of keysight U1252B meters around
« Reply #25 on: January 10, 2017, 02:08:33 am »
Beware that that seller (nmori87-us) does not accept returns. I messed up my order, paid, realized I did something I didn't intend to do, asked him to cancel (minutes after I paid, he never shipped anything). He did cancel a couple of days later, but did a partial refund only on the offer amount (minus the $20.65 shipping I also paid). He returned the shipping too, no problem...
« Last Edit: January 11, 2017, 01:31:35 pm by ivaylo »
 

Offline FlyingHacker

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Re: Bunch of keysight U1252B meters around
« Reply #26 on: January 10, 2017, 03:02:25 am »
I use 8.4V NiMH, so I haven't tried LiIon. The meter supports 7.2V and 8.4V NiMH, but the 8.4V gets up over 10V when full. So, I suppose as long as you charge the LiIon 9V in an appropriate charger, it'll run the meter just fine.

Cool. That was my thought. But since I have not played with Lion 9V I just wanted to see if anyone had any good/bad experience with them. Like I said, I have seen YouTube videos where guys use them in Fluke87s with no issue. My Fluke 87 lasts a very long time on a battery, though.

The ability to charge an NiMH battery in the Keysight is pretty slick, especially since most of us have power supplies right on our bench anyway.
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Offline bitseeker

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Re: Bunch of keysight U1252B meters around
« Reply #27 on: January 10, 2017, 07:35:52 am »
The ability to charge an NiMH battery in the Keysight is pretty slick, especially since most of us have power supplies right on our bench anyway.

And even if you don't have a supply handy, the meter comes with an SMPS one to power the charger in the meter. It's quite nice not having to take the batteries out every time.
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Offline cncjerry

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Re: Bunch of keysight U1252B meters around
« Reply #28 on: January 11, 2017, 05:44:35 am »
The meter charges pretty quickly but, the battery runs out faster than any other meter I own. before purchasing this meter, I doubt I changed batteries once a year; I charge this once a week.
 

Online tooki

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Re: Bunch of keysight U1252B meters around
« Reply #29 on: January 11, 2017, 09:40:12 am »
The meter charges pretty quickly but, the battery runs out faster than any other meter I own. before purchasing this meter, I doubt I changed batteries once a year; I charge this once a week.
How much of that can be chalked up to self-discharge in NiMH batteries?

Can the U1525B accept an alkaline 9V battery (obviously without charging it)?
 

Online BravoV

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Re: Bunch of keysight U1252B meters around
« Reply #30 on: January 11, 2017, 09:40:36 am »
Can the U1525B accept an alkaline 9V battery (obviously without charging it)?

Yes, as I don't like the NimH cell for those 9V battery, as they're lousy and high self discharge.  :--
 
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Online tooki

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Re: Bunch of keysight U1252B meters around
« Reply #31 on: January 11, 2017, 05:17:52 pm »
Cool thanks. Given how little time I actually use a meter, I'll probably end up using primary cells instead of the rechargeable for precisely that reason. (IKEA 9V batteries are very inexpensive, but work great.)
 

Offline mstck

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Re: Bunch of keysight U1252B meters around
« Reply #32 on: January 11, 2017, 07:36:00 pm »
Hi, This looks interesting.  Does the package include the thermocouple? I looked at a manual on-line but I could not determine if they are included or not.

Thanks.
 

Online tooki

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Re: Bunch of keysight U1252B meters around
« Reply #33 on: January 11, 2017, 09:04:12 pm »
Hi, This looks interesting.  Does the package include the thermocouple? I looked at a manual on-line but I could not determine if they are included or not.

Thanks.
The manual doesn't include the packing list, but the quick-start guide does. I don't have it in front of me, but I looked at it the other day and I think it's just the meter, a battery, probes (with detachable leads) and the charger. No frills.
 

Offline mstck

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Re: Bunch of keysight U1252B meters around
« Reply #34 on: January 12, 2017, 12:21:02 am »
Thanks Tooki, it is as you said. I found the QSG.

Hi, This looks interesting.  Does the package include the thermocouple? I looked at a manual on-line but I could not determine if they are included or not.

Thanks.
The manual doesn't include the packing list, but the quick-start guide does. I don't have it in front of me, but I looked at it the other day and I think it's just the meter, a battery, probes (with detachable leads) and the charger. No frills.
 

Offline bitseeker

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Re: Bunch of keysight U1252B meters around
« Reply #35 on: January 12, 2017, 01:29:03 am »
Can the U1525B accept an alkaline 9V battery (obviously without charging it)?

Yes, as I don't like the NimH cell for those 9V battery, as they're lousy and high self discharge.  :--

It depends on the battery. The one that came with the meter does OK with holding a charge. I don't use my U1252B for prolonged measurements since I have bench meters for that, so I'm also in the "occasional use" category. The last time I charged the 8.4V battery was October, 2016. The battery level indicator currently shows about 70% charge remaining.

Addendum:

The battery mentioned above is a Powerex Imedion, 8.4V NiMH, 250mAh.

For my transistor tester, I got a Ray-o-vac Recharge Plus 8.4V NiMH, 200mAh. It was last recharged in October as well. Putting it in the U1252B, the battery level indicator shows 75% charge remaining.

Of course, this isn't a true test of the self-discharge rate. Just some anecdotal information.
« Last Edit: January 12, 2017, 01:38:47 am by bitseeker »
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Online tooki

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Re: Bunch of keysight U1252B meters around
« Reply #36 on: January 12, 2017, 01:42:32 am »
Cool, thanks bitseeker, in that case the included NiMH will likely do just fine for my needs. (It's not as though it'll be my sole meter. Right now I've got a Keithley 197, a Fluke 87V, and two cheapies.)
 

Offline bitseeker

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Re: Bunch of keysight U1252B meters around
« Reply #37 on: January 12, 2017, 01:52:00 am »
Yeah, give it a try. At least the meter can use a variety of batteries. So, something's bound to work for you.

Sounds like you're starting a collection already. :-DMM
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Offline cncjerry

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Re: Bunch of keysight U1252B meters around
« Reply #38 on: January 12, 2017, 04:35:51 am »
Anybody have one show up yet?   I would have expected someone to be reporting in... :-//
 

Offline FlyingHacker

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Re: Bunch of keysight U1252B meters around
« Reply #39 on: January 12, 2017, 01:13:03 pm »
USPS shows mine is out for delivery today. We shall see if it is a meter, or a box of rocks!
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Offline bitseeker

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Re: Bunch of keysight U1252B meters around
« Reply #40 on: January 12, 2017, 07:05:42 pm »
I've bought from that seller before, so I'd be surprised if it wasn't a meter.

When your meters arrives, be sure to run the battery down approx. 20-30% and verify that the charging circuit brings it back to 100% without overheating. There have been a small quantity of U1250-series meters (both in Agilent and Keysight branding) with bad charge controllers.
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Offline deepskyridge

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Re: Bunch of keysight U1252B meters around
« Reply #41 on: January 12, 2017, 09:06:35 pm »
Just picked mine up at the Post Office. Brand new meter includes meter, battery, charger, leads and calibration certificate. Will check it against my data precision 8200  for DCV.

Gary
 
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Offline msquared

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Re: Bunch of keysight U1252B meters around
« Reply #42 on: January 12, 2017, 11:46:02 pm »
Just got mine from "nmori87-us". Meter was new as described in the listing, everything was in the box. The cal cert had a date of March 2015 so it looks like old stock being sold at a considerable discount. Hard to beat ~50% discount for any new test gear. :)
 

Offline cncjerry

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Re: Bunch of keysight U1252B meters around
« Reply #43 on: January 13, 2017, 12:17:25 am »
Ok, 2 - 0.    :popcorn:

Darn, I keep thinking I need another one incase mine gets dirty.
 

Offline bitseeker

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Re: Bunch of keysight U1252B meters around
« Reply #44 on: January 13, 2017, 12:20:26 am »
Ok, 2 - 0.    :popcorn:

Darn, I keep thinking I need another one incase mine gets dirty.

LOL! I'm sure nmori wouldn't mind. :-DD
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Offline shteii01

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Re: Bunch of keysight U1252B meters around
« Reply #45 on: January 13, 2017, 01:58:03 am »
Does it have to be run from battery?
Can it be run just from the wall outlet just like a bench meter?

I have seen some universal ac-dc wall adapters that have 9 volt battery connector.  If I set such adapter to 9 volt dc and hook it up in place of the battery.  Would that work?
 

Offline bitseeker

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Re: Bunch of keysight U1252B meters around
« Reply #46 on: January 13, 2017, 03:51:00 am »
It doesn't have to be run from a battery. However, using a wall-powered supply in lieu of the battery may result in unexpected issues if the meter ends up no longer floating as a result. If the DC output of the power supply is floating, then it'd probably be fine.

Unless you plan on running the meter for extended periods of time, there's really no need to work around the battery.
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Offline cncjerry

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Re: Bunch of keysight U1252B meters around
« Reply #47 on: January 13, 2017, 06:25:39 am »
The charge plugs are dual socketed and I've been wondering why.  You can plug the leads into it when the charge plugs are in but it doesn't make ensemsince you have to have it in charge to charge.  The other thing I thought strange was the charger is 24v 3.5A.  Seems like overkill for a 9V battery, actually 8.4V rechargeable, right?
 

Online tooki

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Re: Bunch of keysight U1252B meters around
« Reply #48 on: January 13, 2017, 05:43:20 pm »
USPS shows mine is out for delivery today. We shall see if it is a meter, or a box of rocks!
Mine arrived yesterday, at my friend's house in USA. I'll be skyping with him to check the units, but given everyone else's experiences, I doubt there will be any issues.
 

Offline amirm

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Re: Bunch of keysight U1252B meters around
« Reply #49 on: January 13, 2017, 06:25:57 pm »
You guys are terrible with these thread.  I keep buying stuff I don't need because they are discounted!  :D

It says it will be here in 10 days.  Paid $200+shipping.
 
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