Most accurate Insulation Resistance tester out there?

[davesparks]

Robin K3131DL is my long serving and trusty fault finding meter, I highy recommend them.

 

[ipf]

Get yourself a combined IR/Continuity tester. Does what it says on the tin.

Agreed.
As far as I'm concerned, that is one basic peice of kit for a qualified electrician. I find it baffling how anyone could be without it. MFT's came in as a handy, all-in-one method for testing and inspection, an ideal peice of kit for a 'domestic installer'....never had one and never will.
In general it's an IR/continuity tester, loop/rcd tester and multimeter for me. ... more obviously come into play, depending on the situation, earth leakage tester, tongue ammeter, etc, etc.

 

[shanky887614]

I find the Fluke 117 to be a decent all round electricians multimeter. Its also got a "LoZ" setting to help eliminate ghost readings. The volt alert isn't up to much (similar to volt stick) but can have its uses.

what is the LoZ setting?

 

[allybally]

what is the LoZ setting?

It's a way of eliminating Ghost Voltages, it put an impedance on the circuit and will show a true voltage, similar to an analog meter

 

[shanky887614]

It's a way of eliminating Ghost Voltages, it put an impedance on the circuit and will show a true voltage, similar to an analog meter

thanks, had a look at that fluke tester and when I get my ticket ill get one

 

[Geoffsd]

It's a way of eliminating Ghost Voltages, it put an impedance on the circuit and will show a true voltage, similar to an analog meter

It's the other way round.

Most multi-meters, and this one (Fluke 117) in normal AC voltage mode, have an impedance >5 Mega ohms.

In LoZ (Low impedance) it is only around 3 Kilo ohms and automatically ranges for AC and DC.

 

[tony mc]

Get yourself a combined IR/Continuity tester. Does what it says on the tin.

Must admit I have a few meters and the one I use the most is the Megger MIT 320 excellent bit of kit for IR testing but also has low Ohms and K Ohm setting which is good for fault finding IMO!!

 

[silver surfer]

Megger DLRO 10 HD goes to 4 decimal places for low resistance readings.

Megger LTW 425 goes to 3 decimal places for Earth Loop readings.

 

[Engineer54]

Megger DLRO 10 HD goes to 4 decimal places for low resistance readings.

Not exactly your normal common a garden low resistance meter though is it?? This is what is commonly know as a ''Ductor'' tester that applies a high current into the test piece via current and voltage probes (4 point contact probes)!! Oh and probably costs around the 2k to 2.5k quid mark...

Did i mention, it's also a totally inappropriate bit of test kit for measuring the resistance of circuit wiring to boot.....

 

[shanky887614]

there is no such thing as the most accurate insulation resistance tester, when its been calibrated there all the same, quality and reliability is what sets them apart

if they have same range that is

 

[davesparks]

Nonsense, just because a tester is calibrated it doesn't mean it is of equal accuracy to another calibrated meter.

I've got a calibrated vernier caliper and a calibrated micrometer, they measure the same thing but to different accuracy.

 

[Engineer54]

there is no such thing as the most accurate insulation resistance tester, when its been calibrated there all the same, quality and reliability is what sets them apart

if they have same range that is

Sure there is, ....it depends on the accuracy of the meter, generally the higher the accuracy the higher the cost!! lol!!

 

[shanky887614]

Nonsense, just because a tester is calibrated it doesn't mean it is of equal accuracy to another calibrated meter.

I've got a calibrated vernier caliper and a calibrated micrometer, they measure the same thing but to different accuracy.

they are different types though, if you compare two micrometers there wont be much if any difference betweem them if they have been calibrated

 

[silver surfer]

Not exactly your normal common a garden low resistance meter though is it?? This is what is commonly know as a ''Ductor'' tester that applies a high current into the test piece via current and voltage probes (4 point contact probes)!! Oh and probably costs around the 2k to 2.5k quid mark...

Did i mention, it's also a totally inappropriate bit of test kit for measuring the resistance of circuit wiring to boot.....

But never the less an option for the OP to ponder.............
Lets not make presumptions on his available budget or technical capabilities..............
That would be rude...................

 

[silver surfer]

Sure there is, ....it depends on the accuracy of the meter, generally the higher the accuracy the higher the cost!! lol!!

Agreed anywhere up to 2.5 grand