Is the continuity test limit resistance of a multimeter standard?Why so much variance in the continuity beeper threshold? How do these beepers work anyway?Why does a multimeter in resistance mode show initial continuity over a diode?Why is resistance increasing while I'm measuring using a multimeter?Continuity Test on ResistorWhy does my multimeter always show a value of 1 for resistance?What am I doing wrong here? LED and Multimeter [Noob]Why won't this bulb light when I put the multimeter in series?Suspicious Continuity Test ResultHow to test the voltage of a speed sensor and identify the +ve, ground and signal wires using a DMM?Manually test computer Ethernet port with a multimeterMistakenly performed continuity test when power is on
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Is the continuity test limit resistance of a multimeter standard?
Is the continuity test limit resistance of a multimeter standard?
Why so much variance in the continuity beeper threshold? How do these beepers work anyway?Why does a multimeter in resistance mode show initial continuity over a diode?Why is resistance increasing while I'm measuring using a multimeter?Continuity Test on ResistorWhy does my multimeter always show a value of 1 for resistance?What am I doing wrong here? LED and Multimeter [Noob]Why won't this bulb light when I put the multimeter in series?Suspicious Continuity Test ResultHow to test the voltage of a speed sensor and identify the +ve, ground and signal wires using a DMM?Manually test computer Ethernet port with a multimeterMistakenly performed continuity test when power is on
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
$begingroup$
The continuity shows us the shorts but, many times I guess even the wire has any resistance R<50 the continuity will beep to indicate a short.
Is it always 50 Ohm or what parameter should we look in a manual?
multimeter
$endgroup$
|
show 2 more comments
$begingroup$
The continuity shows us the shorts but, many times I guess even the wire has any resistance R<50 the continuity will beep to indicate a short.
Is it always 50 Ohm or what parameter should we look in a manual?
multimeter
$endgroup$
1
$begingroup$
Are you trying to ask at what resistance does the continuity test beep for a short on a standard multimeter? It seems a very poorly worded question but this is what I got from it
$endgroup$
– MCG
13 hours ago
$begingroup$
It should be in the specs, but I think it differs per brand. (Commonly, the cheaper the device, the less specs you get). E.g. the Fluke multimeters Models 175, 177 & 179 indicate it in their Specifications, Function = Continuity, page 12
$endgroup$
– Huisman
13 hours ago
$begingroup$
@MCG Yes that is the question.
$endgroup$
– atmnt
12 hours ago
$begingroup$
@Huisman In the manual it says: "Meter beeps at < 25 Ω, beeper turns off at > 250Ω" Its a bit unclear what happens for 100 Ω. Will it beep or not??
$endgroup$
– atmnt
12 hours ago
$begingroup$
@atmnt that is because between those values they cannot predict the outcome...
$endgroup$
– Solar Mike
12 hours ago
|
show 2 more comments
$begingroup$
The continuity shows us the shorts but, many times I guess even the wire has any resistance R<50 the continuity will beep to indicate a short.
Is it always 50 Ohm or what parameter should we look in a manual?
multimeter
$endgroup$
The continuity shows us the shorts but, many times I guess even the wire has any resistance R<50 the continuity will beep to indicate a short.
Is it always 50 Ohm or what parameter should we look in a manual?
multimeter
multimeter
edited 12 hours ago
atmnt
asked 13 hours ago
atmntatmnt
1,130831
1,130831
1
$begingroup$
Are you trying to ask at what resistance does the continuity test beep for a short on a standard multimeter? It seems a very poorly worded question but this is what I got from it
$endgroup$
– MCG
13 hours ago
$begingroup$
It should be in the specs, but I think it differs per brand. (Commonly, the cheaper the device, the less specs you get). E.g. the Fluke multimeters Models 175, 177 & 179 indicate it in their Specifications, Function = Continuity, page 12
$endgroup$
– Huisman
13 hours ago
$begingroup$
@MCG Yes that is the question.
$endgroup$
– atmnt
12 hours ago
$begingroup$
@Huisman In the manual it says: "Meter beeps at < 25 Ω, beeper turns off at > 250Ω" Its a bit unclear what happens for 100 Ω. Will it beep or not??
$endgroup$
– atmnt
12 hours ago
$begingroup$
@atmnt that is because between those values they cannot predict the outcome...
$endgroup$
– Solar Mike
12 hours ago
|
show 2 more comments
1
$begingroup$
Are you trying to ask at what resistance does the continuity test beep for a short on a standard multimeter? It seems a very poorly worded question but this is what I got from it
$endgroup$
– MCG
13 hours ago
$begingroup$
It should be in the specs, but I think it differs per brand. (Commonly, the cheaper the device, the less specs you get). E.g. the Fluke multimeters Models 175, 177 & 179 indicate it in their Specifications, Function = Continuity, page 12
$endgroup$
– Huisman
13 hours ago
$begingroup$
@MCG Yes that is the question.
$endgroup$
– atmnt
12 hours ago
$begingroup$
@Huisman In the manual it says: "Meter beeps at < 25 Ω, beeper turns off at > 250Ω" Its a bit unclear what happens for 100 Ω. Will it beep or not??
$endgroup$
– atmnt
12 hours ago
$begingroup$
@atmnt that is because between those values they cannot predict the outcome...
$endgroup$
– Solar Mike
12 hours ago
1
1
$begingroup$
Are you trying to ask at what resistance does the continuity test beep for a short on a standard multimeter? It seems a very poorly worded question but this is what I got from it
$endgroup$
– MCG
13 hours ago
$begingroup$
Are you trying to ask at what resistance does the continuity test beep for a short on a standard multimeter? It seems a very poorly worded question but this is what I got from it
$endgroup$
– MCG
13 hours ago
$begingroup$
It should be in the specs, but I think it differs per brand. (Commonly, the cheaper the device, the less specs you get). E.g. the Fluke multimeters Models 175, 177 & 179 indicate it in their Specifications, Function = Continuity, page 12
$endgroup$
– Huisman
13 hours ago
$begingroup$
It should be in the specs, but I think it differs per brand. (Commonly, the cheaper the device, the less specs you get). E.g. the Fluke multimeters Models 175, 177 & 179 indicate it in their Specifications, Function = Continuity, page 12
$endgroup$
– Huisman
13 hours ago
$begingroup$
@MCG Yes that is the question.
$endgroup$
– atmnt
12 hours ago
$begingroup$
@MCG Yes that is the question.
$endgroup$
– atmnt
12 hours ago
$begingroup$
@Huisman In the manual it says: "Meter beeps at < 25 Ω, beeper turns off at > 250Ω" Its a bit unclear what happens for 100 Ω. Will it beep or not??
$endgroup$
– atmnt
12 hours ago
$begingroup$
@Huisman In the manual it says: "Meter beeps at < 25 Ω, beeper turns off at > 250Ω" Its a bit unclear what happens for 100 Ω. Will it beep or not??
$endgroup$
– atmnt
12 hours ago
$begingroup$
@atmnt that is because between those values they cannot predict the outcome...
$endgroup$
– Solar Mike
12 hours ago
$begingroup$
@atmnt that is because between those values they cannot predict the outcome...
$endgroup$
– Solar Mike
12 hours ago
|
show 2 more comments
3 Answers
3
active
oldest
votes
$begingroup$
It is not a standard value from meter to meter. Different models will beep at different resistances.
An example in the comments were the fluke models 175,177 and 179. In the datasheet for these, you can see on page 12 that the meter beeps at <25 ohms.
The multimeter I use is a Tenma 72-7732A, and in the datasheet for this model, on page 35 it is stated that the beeper will sound for conditions less than 50 ohms.
In the popular EEVBlog multimeter, page 25 of the Datasheet states the continuity threshold is between 30 and 480 ohms.
These few examples are enough to determine that there is no standard value. If the information cannot be found in the datasheet of your particular model, then getting a few resistors between 10 - 250 ohms and measuring them should be enough to tell you the threshold.
An easier way, as pointed out by @HarrySvensson in the comments is to turn a potentiometer/rheostat until the beeping stops/starts and measure the resistance.
$endgroup$
2
$begingroup$
Or just use a potentiometer as a rheostat and rotate the winder until it beeps/stops beeping and then measure the resistance of the potentiometer.
$endgroup$
– Harry Svensson
12 hours ago
$begingroup$
@HarrySvensson ahh..... yes.... That is a much easier way and I almost did a full facepalm for not having that cross my mind while writing!
$endgroup$
– MCG
12 hours ago
$begingroup$
"between 30 and 480 ohms" why would there be such a range on that? I get that to make the beeper fast you use analog circuitry with inherent tolerance limits, but an order of magnitude variance?
$endgroup$
– Hearth
10 hours ago
$begingroup$
@Hearth I'm not sure. I didn't actually look into the reasons why, it was just a good one to use as a further example. That is a very good question though!
$endgroup$
– MCG
10 hours ago
$begingroup$
@MCG I went ahead and made it a question on here, since a cursory search wasn't able to turn up much (though it's difficult to figure out what keywords to search for for this).
$endgroup$
– Hearth
9 hours ago
|
show 1 more comment
$begingroup$
The continuity resistance threshold is not standard.
The exact value is certainly quoted in the datasheet/manual, if the instrument comes from a reputable manufacturer. If you have a cheap, unknown instrument then you can try a few resistors, and check which one beep, and which one do not beep.
Some expensive multimeters allow you to manually set the threshold, on my Keithley 2000 the threshold can be set anywhere between $1 Omega$ and $1 textkOmega$.
$endgroup$
add a comment |
$begingroup$
I'm not aware of any standard resistance values for the continuity mode of a multi-meter.
However, I would personally say, there is an unofficial industry expectation that the continuity beeper should not trigger on a pn-junction.
Assuming the meter is using an excitation current of 1 mA and choosing a conservative IV curve for a pn-junction (assume Id < 100 uA at say 200 mV - 300 mV). By Ohms law, that would give you an upper continuity threshold of 200 $Omega$ to 300 $Omega$.
$endgroup$
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
It is not a standard value from meter to meter. Different models will beep at different resistances.
An example in the comments were the fluke models 175,177 and 179. In the datasheet for these, you can see on page 12 that the meter beeps at <25 ohms.
The multimeter I use is a Tenma 72-7732A, and in the datasheet for this model, on page 35 it is stated that the beeper will sound for conditions less than 50 ohms.
In the popular EEVBlog multimeter, page 25 of the Datasheet states the continuity threshold is between 30 and 480 ohms.
These few examples are enough to determine that there is no standard value. If the information cannot be found in the datasheet of your particular model, then getting a few resistors between 10 - 250 ohms and measuring them should be enough to tell you the threshold.
An easier way, as pointed out by @HarrySvensson in the comments is to turn a potentiometer/rheostat until the beeping stops/starts and measure the resistance.
$endgroup$
2
$begingroup$
Or just use a potentiometer as a rheostat and rotate the winder until it beeps/stops beeping and then measure the resistance of the potentiometer.
$endgroup$
– Harry Svensson
12 hours ago
$begingroup$
@HarrySvensson ahh..... yes.... That is a much easier way and I almost did a full facepalm for not having that cross my mind while writing!
$endgroup$
– MCG
12 hours ago
$begingroup$
"between 30 and 480 ohms" why would there be such a range on that? I get that to make the beeper fast you use analog circuitry with inherent tolerance limits, but an order of magnitude variance?
$endgroup$
– Hearth
10 hours ago
$begingroup$
@Hearth I'm not sure. I didn't actually look into the reasons why, it was just a good one to use as a further example. That is a very good question though!
$endgroup$
– MCG
10 hours ago
$begingroup$
@MCG I went ahead and made it a question on here, since a cursory search wasn't able to turn up much (though it's difficult to figure out what keywords to search for for this).
$endgroup$
– Hearth
9 hours ago
|
show 1 more comment
$begingroup$
It is not a standard value from meter to meter. Different models will beep at different resistances.
An example in the comments were the fluke models 175,177 and 179. In the datasheet for these, you can see on page 12 that the meter beeps at <25 ohms.
The multimeter I use is a Tenma 72-7732A, and in the datasheet for this model, on page 35 it is stated that the beeper will sound for conditions less than 50 ohms.
In the popular EEVBlog multimeter, page 25 of the Datasheet states the continuity threshold is between 30 and 480 ohms.
These few examples are enough to determine that there is no standard value. If the information cannot be found in the datasheet of your particular model, then getting a few resistors between 10 - 250 ohms and measuring them should be enough to tell you the threshold.
An easier way, as pointed out by @HarrySvensson in the comments is to turn a potentiometer/rheostat until the beeping stops/starts and measure the resistance.
$endgroup$
2
$begingroup$
Or just use a potentiometer as a rheostat and rotate the winder until it beeps/stops beeping and then measure the resistance of the potentiometer.
$endgroup$
– Harry Svensson
12 hours ago
$begingroup$
@HarrySvensson ahh..... yes.... That is a much easier way and I almost did a full facepalm for not having that cross my mind while writing!
$endgroup$
– MCG
12 hours ago
$begingroup$
"between 30 and 480 ohms" why would there be such a range on that? I get that to make the beeper fast you use analog circuitry with inherent tolerance limits, but an order of magnitude variance?
$endgroup$
– Hearth
10 hours ago
$begingroup$
@Hearth I'm not sure. I didn't actually look into the reasons why, it was just a good one to use as a further example. That is a very good question though!
$endgroup$
– MCG
10 hours ago
$begingroup$
@MCG I went ahead and made it a question on here, since a cursory search wasn't able to turn up much (though it's difficult to figure out what keywords to search for for this).
$endgroup$
– Hearth
9 hours ago
|
show 1 more comment
$begingroup$
It is not a standard value from meter to meter. Different models will beep at different resistances.
An example in the comments were the fluke models 175,177 and 179. In the datasheet for these, you can see on page 12 that the meter beeps at <25 ohms.
The multimeter I use is a Tenma 72-7732A, and in the datasheet for this model, on page 35 it is stated that the beeper will sound for conditions less than 50 ohms.
In the popular EEVBlog multimeter, page 25 of the Datasheet states the continuity threshold is between 30 and 480 ohms.
These few examples are enough to determine that there is no standard value. If the information cannot be found in the datasheet of your particular model, then getting a few resistors between 10 - 250 ohms and measuring them should be enough to tell you the threshold.
An easier way, as pointed out by @HarrySvensson in the comments is to turn a potentiometer/rheostat until the beeping stops/starts and measure the resistance.
$endgroup$
It is not a standard value from meter to meter. Different models will beep at different resistances.
An example in the comments were the fluke models 175,177 and 179. In the datasheet for these, you can see on page 12 that the meter beeps at <25 ohms.
The multimeter I use is a Tenma 72-7732A, and in the datasheet for this model, on page 35 it is stated that the beeper will sound for conditions less than 50 ohms.
In the popular EEVBlog multimeter, page 25 of the Datasheet states the continuity threshold is between 30 and 480 ohms.
These few examples are enough to determine that there is no standard value. If the information cannot be found in the datasheet of your particular model, then getting a few resistors between 10 - 250 ohms and measuring them should be enough to tell you the threshold.
An easier way, as pointed out by @HarrySvensson in the comments is to turn a potentiometer/rheostat until the beeping stops/starts and measure the resistance.
edited 12 hours ago
answered 12 hours ago
MCGMCG
7,79932152
7,79932152
2
$begingroup$
Or just use a potentiometer as a rheostat and rotate the winder until it beeps/stops beeping and then measure the resistance of the potentiometer.
$endgroup$
– Harry Svensson
12 hours ago
$begingroup$
@HarrySvensson ahh..... yes.... That is a much easier way and I almost did a full facepalm for not having that cross my mind while writing!
$endgroup$
– MCG
12 hours ago
$begingroup$
"between 30 and 480 ohms" why would there be such a range on that? I get that to make the beeper fast you use analog circuitry with inherent tolerance limits, but an order of magnitude variance?
$endgroup$
– Hearth
10 hours ago
$begingroup$
@Hearth I'm not sure. I didn't actually look into the reasons why, it was just a good one to use as a further example. That is a very good question though!
$endgroup$
– MCG
10 hours ago
$begingroup$
@MCG I went ahead and made it a question on here, since a cursory search wasn't able to turn up much (though it's difficult to figure out what keywords to search for for this).
$endgroup$
– Hearth
9 hours ago
|
show 1 more comment
2
$begingroup$
Or just use a potentiometer as a rheostat and rotate the winder until it beeps/stops beeping and then measure the resistance of the potentiometer.
$endgroup$
– Harry Svensson
12 hours ago
$begingroup$
@HarrySvensson ahh..... yes.... That is a much easier way and I almost did a full facepalm for not having that cross my mind while writing!
$endgroup$
– MCG
12 hours ago
$begingroup$
"between 30 and 480 ohms" why would there be such a range on that? I get that to make the beeper fast you use analog circuitry with inherent tolerance limits, but an order of magnitude variance?
$endgroup$
– Hearth
10 hours ago
$begingroup$
@Hearth I'm not sure. I didn't actually look into the reasons why, it was just a good one to use as a further example. That is a very good question though!
$endgroup$
– MCG
10 hours ago
$begingroup$
@MCG I went ahead and made it a question on here, since a cursory search wasn't able to turn up much (though it's difficult to figure out what keywords to search for for this).
$endgroup$
– Hearth
9 hours ago
2
2
$begingroup$
Or just use a potentiometer as a rheostat and rotate the winder until it beeps/stops beeping and then measure the resistance of the potentiometer.
$endgroup$
– Harry Svensson
12 hours ago
$begingroup$
Or just use a potentiometer as a rheostat and rotate the winder until it beeps/stops beeping and then measure the resistance of the potentiometer.
$endgroup$
– Harry Svensson
12 hours ago
$begingroup$
@HarrySvensson ahh..... yes.... That is a much easier way and I almost did a full facepalm for not having that cross my mind while writing!
$endgroup$
– MCG
12 hours ago
$begingroup$
@HarrySvensson ahh..... yes.... That is a much easier way and I almost did a full facepalm for not having that cross my mind while writing!
$endgroup$
– MCG
12 hours ago
$begingroup$
"between 30 and 480 ohms" why would there be such a range on that? I get that to make the beeper fast you use analog circuitry with inherent tolerance limits, but an order of magnitude variance?
$endgroup$
– Hearth
10 hours ago
$begingroup$
"between 30 and 480 ohms" why would there be such a range on that? I get that to make the beeper fast you use analog circuitry with inherent tolerance limits, but an order of magnitude variance?
$endgroup$
– Hearth
10 hours ago
$begingroup$
@Hearth I'm not sure. I didn't actually look into the reasons why, it was just a good one to use as a further example. That is a very good question though!
$endgroup$
– MCG
10 hours ago
$begingroup$
@Hearth I'm not sure. I didn't actually look into the reasons why, it was just a good one to use as a further example. That is a very good question though!
$endgroup$
– MCG
10 hours ago
$begingroup$
@MCG I went ahead and made it a question on here, since a cursory search wasn't able to turn up much (though it's difficult to figure out what keywords to search for for this).
$endgroup$
– Hearth
9 hours ago
$begingroup$
@MCG I went ahead and made it a question on here, since a cursory search wasn't able to turn up much (though it's difficult to figure out what keywords to search for for this).
$endgroup$
– Hearth
9 hours ago
|
show 1 more comment
$begingroup$
The continuity resistance threshold is not standard.
The exact value is certainly quoted in the datasheet/manual, if the instrument comes from a reputable manufacturer. If you have a cheap, unknown instrument then you can try a few resistors, and check which one beep, and which one do not beep.
Some expensive multimeters allow you to manually set the threshold, on my Keithley 2000 the threshold can be set anywhere between $1 Omega$ and $1 textkOmega$.
$endgroup$
add a comment |
$begingroup$
The continuity resistance threshold is not standard.
The exact value is certainly quoted in the datasheet/manual, if the instrument comes from a reputable manufacturer. If you have a cheap, unknown instrument then you can try a few resistors, and check which one beep, and which one do not beep.
Some expensive multimeters allow you to manually set the threshold, on my Keithley 2000 the threshold can be set anywhere between $1 Omega$ and $1 textkOmega$.
$endgroup$
add a comment |
$begingroup$
The continuity resistance threshold is not standard.
The exact value is certainly quoted in the datasheet/manual, if the instrument comes from a reputable manufacturer. If you have a cheap, unknown instrument then you can try a few resistors, and check which one beep, and which one do not beep.
Some expensive multimeters allow you to manually set the threshold, on my Keithley 2000 the threshold can be set anywhere between $1 Omega$ and $1 textkOmega$.
$endgroup$
The continuity resistance threshold is not standard.
The exact value is certainly quoted in the datasheet/manual, if the instrument comes from a reputable manufacturer. If you have a cheap, unknown instrument then you can try a few resistors, and check which one beep, and which one do not beep.
Some expensive multimeters allow you to manually set the threshold, on my Keithley 2000 the threshold can be set anywhere between $1 Omega$ and $1 textkOmega$.
answered 12 hours ago
Vladimir CraveroVladimir Cravero
13.5k12656
13.5k12656
add a comment |
add a comment |
$begingroup$
I'm not aware of any standard resistance values for the continuity mode of a multi-meter.
However, I would personally say, there is an unofficial industry expectation that the continuity beeper should not trigger on a pn-junction.
Assuming the meter is using an excitation current of 1 mA and choosing a conservative IV curve for a pn-junction (assume Id < 100 uA at say 200 mV - 300 mV). By Ohms law, that would give you an upper continuity threshold of 200 $Omega$ to 300 $Omega$.
$endgroup$
add a comment |
$begingroup$
I'm not aware of any standard resistance values for the continuity mode of a multi-meter.
However, I would personally say, there is an unofficial industry expectation that the continuity beeper should not trigger on a pn-junction.
Assuming the meter is using an excitation current of 1 mA and choosing a conservative IV curve for a pn-junction (assume Id < 100 uA at say 200 mV - 300 mV). By Ohms law, that would give you an upper continuity threshold of 200 $Omega$ to 300 $Omega$.
$endgroup$
add a comment |
$begingroup$
I'm not aware of any standard resistance values for the continuity mode of a multi-meter.
However, I would personally say, there is an unofficial industry expectation that the continuity beeper should not trigger on a pn-junction.
Assuming the meter is using an excitation current of 1 mA and choosing a conservative IV curve for a pn-junction (assume Id < 100 uA at say 200 mV - 300 mV). By Ohms law, that would give you an upper continuity threshold of 200 $Omega$ to 300 $Omega$.
$endgroup$
I'm not aware of any standard resistance values for the continuity mode of a multi-meter.
However, I would personally say, there is an unofficial industry expectation that the continuity beeper should not trigger on a pn-junction.
Assuming the meter is using an excitation current of 1 mA and choosing a conservative IV curve for a pn-junction (assume Id < 100 uA at say 200 mV - 300 mV). By Ohms law, that would give you an upper continuity threshold of 200 $Omega$ to 300 $Omega$.
answered 7 hours ago
sstobbesstobbe
2,528159
2,528159
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1
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Are you trying to ask at what resistance does the continuity test beep for a short on a standard multimeter? It seems a very poorly worded question but this is what I got from it
$endgroup$
– MCG
13 hours ago
$begingroup$
It should be in the specs, but I think it differs per brand. (Commonly, the cheaper the device, the less specs you get). E.g. the Fluke multimeters Models 175, 177 & 179 indicate it in their Specifications, Function = Continuity, page 12
$endgroup$
– Huisman
13 hours ago
$begingroup$
@MCG Yes that is the question.
$endgroup$
– atmnt
12 hours ago
$begingroup$
@Huisman In the manual it says: "Meter beeps at < 25 Ω, beeper turns off at > 250Ω" Its a bit unclear what happens for 100 Ω. Will it beep or not??
$endgroup$
– atmnt
12 hours ago
$begingroup$
@atmnt that is because between those values they cannot predict the outcome...
$endgroup$
– Solar Mike
12 hours ago