Extraneous Conductive Parts in Bathroom

[Midwest]

Megger 1730, realise not the most suitable device to use for this measurement, but it's never been that much of an issue before. Normally such readings of 'non' extraneous conductive parts, have been several Mohms.

 

[Midwest]

Time to purchase a new continuity tester, perhaps, with some longish test leads!

 

[mattg4321]

Only skim read this but is the resolution of your MFT not much better on continuity setting rather than IR settings. Think my 1553 measures up to 99k ohms on continuity.

Might be wrong though - it is friday evening!

 

[Midwest]

Hmmmmm, my 1730 spec shows Continuity/Resistance ranges; 0.01 - 99.9 ohms + 100 - 99.9kohms. As far as I can see, my maximum reading on my Continuity setting is 99.9omhs. Anyhows, a reading of 99.9kohms would convert to 0.0999mohms, so we're in the same boat, as regards the limitation of this device, to accurately read 22000ohms.

 

[Lucien Nunes]

The 1730 appears to be autoranging on resistance and on the higher range with a max reading of 99.9kΩ it reads in increments of 100Ω +/- 2 counts. At 22kΩ it would display somewhere between 19.8 and 22.2 which is fine for your purposes. A separate discussion is the relative merits of different test voltages for this test.

 

[rich.250]

The 1730 appears to be autoranging on resistance and on the higher range with a max reading of 99.9kΩ it reads in increments of 100Ω +/- 2 counts. At 22kΩ it would display somewhere between 19.8 and 22.2 which is fine for your purposes. A separate discussion is the relative merits of different test voltages for this test.

This is correct, and the same for the Megger MIT range with kΩ range.


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[Midwest]

I am wondering however in this scenario, why when using my 1730 set to continuity I obtain a reading of >999ohms (i.e. I don't get kohm reading), but when set to IR a reading of 0.01mohm?

Apologies as this has turned into a thread on how to use my own MFT!

 

[Midwest]

Thanks chaps, just worked it out myself. Appears range on continuity on the 1730, can be set to maximums, mine was set to 999ohms. I'll try out my new settings, on those pesky pipes.

 

[Midwest]

Results are in.

Went back today, and was able cross bond hot water & cold water services under sink. (can't see if I said, but previously bonded cold water and still had reading of 5.6k ohms on me pipework). Re tested said pipe work to local cpc, and obtained reading of 0.54 ohms. Sorted.