15 volt Multimeter battery

[pinnerite]

I did something today that I cannot ever remember doing before.
Shortened the mains lead to my printer and fitted a new plug.
Plugged into combination of intelligent power strips switched on and
blew an RCD.

When I started to trace back from rewired lead I found the batteries
had "gone" in both my meters.

The analogue TMK 500 takes two batteries a regular 1.5v AA and a 15v
job. The marking on the latter is UCAR (Union Carbide) Super 15V. They
do not appear to be available any longer.

It has a sort of rounded square cross section. It is 34mm long by 15mm
across.

Any battery experts out there?

TIA

Alan



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running on an AMD Phenom II X4 Black edition processor with 16GB of
DRAM.

[alan_m]

On 03/04/2023 18:02, pinnerite wrote:
> Super 15V

Would something like a 15V Avo type battery fit

15v BATTERY BLR154/504 Mallory M504

15mm diameter, 37mm long (which probably includes the terminal height)

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[alan_m]

On 03/04/2023 18:17, alan_m wrote:
> On 03/04/2023 18:02, pinnerite wrote:
>> Super 15V
>
> Would something like a 15V Avo type battery fit
>
> 15v BATTERY BLR154/504 Mallory M504
>
> 15mm diameter, 37mm long (which probably includes the terminal height)
>

Other description of BLR154 say Height: 34mm. Diam: 15mm

or maybe
15v BATTERY BLR 121
which isn't square but rectangular 36 x 15 x 26mm

Again sold as an Avo type battery but possibly used by other
manufactures in similar type multimeters.

[alan_m]

On 03/04/2023 18:22, alan_m wrote:
> On 03/04/2023 18:17, alan_m wrote:
>> On 03/04/2023 18:02, pinnerite wrote:
>>> Super 15V
>>
>> Would something like a 15V Avo type battery fit
>>
>> 15v BATTERY BLR154/504 Mallory M504
>>
>> 15mm diameter, 37mm long (which probably includes the terminal height)
>>
>
> Other description of BLR154 say Height: 34mm. Diam: 15mm
>
> or maybe
> 15v BATTERY BLR 121
> which isn't square but rectangular  36 x 15 x 26mm
>
> Again sold as an Avo type battery but possibly used by other
> manufactures in similar type multimeters.
>
>

The battery was Eveready 504 so search for alternatives

https://www.petervis.com/avo-meters/eveready-504-neda-220/eveready-504-neda-220.html

Wedge pieces of cardboard to keep a round battery alternative in position.

[Animal]

On Monday, 3 April 2023 at 18:02:50 UTC+1, pinnerite wrote:
> I did something today that I cannot ever remember doing before.
> Shortened the mains lead to my printer and fitted a new plug.
> Plugged into combination of intelligent power strips switched on and
> blew an RCD.
>
> When I started to trace back from rewired lead I found the batteries
> had "gone" in both my meters.
>
> The analogue TMK 500 takes two batteries a regular 1.5v AA and a 15v
> job. The marking on the latter is UCAR (Union Carbide) Super 15V. They
> do not appear to be available any longer.
>
> It has a sort of rounded square cross section. It is 34mm long by 15mm
> across.
>
> Any battery experts out there?
>
> TIA
>
> Alan

stack some cheap coin cells in

[pinnerite]

Thank you and everyone else that took the trouble.
I chose a BLR 154 as that looked the most likely fit.

Regards, Alan

--
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[Harry Bloomfield Esq]

On 03/04/2023 18:02, pinnerite wrote:

> The analogue TMK 500 takes two batteries a regular 1.5v AA and a 15v
> job. The marking on the latter is UCAR (Union Carbide) Super 15V. They
> do not appear to be available any longer.

You can make up the 15v, using cheap coin cells in series.

[Brian Gaff]

My meter used to have one branded Exide, though I'd imagine that is brand
engineering. Sadly I cannot use meters any more, It would be nice to have
had a talking meter.
Brian

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[Paul]

On 4/4/2023 8:02 AM, Brian Gaff wrote:
> My meter used to have one branded Exide, though I'd imagine that is brand
> engineering. Sadly I cannot use meters any more, It would be nice to have
> had a talking meter.
> Brian
>

You might still be able to swing it.

My multimeter has an RS232 interface and sends out a
reading on it once a second. The interface is optically isolated,
so you can be measuring a 500V circuit, without risking your PC.

If you had a speaking box, with RS232 input, you would just
connect the two together. But on my meter, this was a pretty
basic setup, and on a range change, there was no notation in
the log as to what was selected. For this to work well, it needs
to log all interface changes. And it was deficient in that regard.

As for the choice of batteries in multimeters, the choices seem
to be an odd lot. A perfectly good design is possible with a 9V
battery. Yet, outfits like Radio Shack, used to make multimeters
with an expensive 12V power source in them. Versus the cheaper
9V solution. The choice seems to be rather arbitrary. If the battery
is half the price of the meter, the design is pretty silly.

Paul