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Anonymous Poster #1

Proximity Switches

03/24/2013 9:17 AM

Hello Gurus,

Keeping all the other parameters the same, can a proximity sensor with a longer range say 30 mm detect an object at say 10 mm?

AXJ
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lyn
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#1

Re: PROXIMITY SWITCHES

03/24/2013 10:12 AM

Yes.
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Anonymous Poster #1
#2
In reply to #1

Re: PROXIMITY SWITCHES

03/24/2013 10:27 AM

now wouldnt you agree that it makes sense to replace all shorter range sensors with one long range sensor in a manufacturing plant; it will result in reduction of inventory and thus saves the company cost.
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lyn
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#3
In reply to #2

Re: PROXIMITY SWITCHES

03/24/2013 10:42 AM

Not necessarily.

Depends on what the sensor will see at 30mm that it didn't see beyond 10mm.

An object 20mm away from the sensor that was not detected with a 10mm range sensor suddenly becomes visible to the 30mm sensor. Maybe that's good, maybe not.
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Tom_Consulting
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#6
In reply to #2

Re: PROXIMITY SWITCHES

03/25/2013 9:18 AM

If the distance is established as part of a safety factor then replacement would require changes in the safety standards.

If I had a 10m sensor near my house that turns on a lighting system, and I replaced it with a 30m sensor, the lights would come one every time a car, deer, person passed within 30m...not what I want.

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JohnDG
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#4

Re: Proximity Switches

03/24/2013 12:09 PM

Generally yes, but it depends on the sensor type. For example an optical focussed reflective type may be designed to see targets only in the range 25 to 35mm, and may not detect targets nearer or further away.

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vsar
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#5

Re: Proximity Switches

03/25/2013 8:53 AM

"Keeping all parameters the same", it is generally a 'yes', as already stated above. Unless the intended application is specifically meant to detect and /or to measure a distance critical application.

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