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mattbird
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Join Date: Aug 2008
Posts: 6

Special Sensor Required

08/13/2008 7:36 AM

Hi,I am in a meat works in New Zealand & require a sensor to replace the photoelectric ones that when activated turn on either a hand wash or knife steriliser.We are using both 24 v ac & dc. The problem is that i need a sensor that can take alot of abuse from operators, does not get affected my steam or water & has a decent sensing distance so operator wanting to use hand wash or steriliser is just a matter of hand under wash nozzle or knife into steriliser without delay or detour & unit operates.
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PWSlack
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#1

Re: Special Sensor Required

08/13/2008 7:38 AM

What is it that actuates the sensor?

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mattbird
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Join Date: Aug 2008
Posts: 6
#8
In reply to #1

Re: Special Sensor Required

08/14/2008 11:59 PM

Hi, The operators hand or knife actuates the sensor which puts an input into a relay & timer set up & recently upgrading some of them to a Zelio set up ( PLC ) which turns on a solenoid valve. Main issues steam & water actuating sensor which could be over come by positioning but then operator does not have the time to detour to do this.Sensor being damaged. Prox sensors would be ok for knife steriliser but the sensing distance is the issue.They used to have manually operated valves but hygiene,water containment and the amount of water wasted was why they went to sensors. Just trying to find someone who already uses a sensor in this same application that does not put up with these nuisance issues. Cheers
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JohnDG
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#2

Re: Special Sensor Required

08/13/2008 7:43 AM

Try having a chat with one of the nice sales engineers at Omron - they've got an office in Auckland - phone number on website (linked above).

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mattbird
Member

Join Date: Aug 2008
Posts: 6
#9
In reply to #2

Re: Special Sensor Required

08/15/2008 12:02 AM

Hi, yes trialling one at the moment. A bit pricey though but we will see.
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Jusup
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Indonesia - Member - Member from Indonesia Hobbies - Fishing - New Member Engineering Fields - Electrical Engineering - Member

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Location: Batam, Indonesia
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#3

Re: Special Sensor Required

08/13/2008 9:58 AM

Have you try to use infrared sensor?

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mattbird
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Join Date: Aug 2008
Posts: 6
#12
In reply to #3

Re: Special Sensor Required

08/15/2008 12:08 AM

Hi, Does this require a reflector or is it a send receive 2 sensor set up ?
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Skeeter
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Location: Montana, USA
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#4

Re: Special Sensor Required

08/13/2008 11:20 PM

Why do the photoelectric sensors need to be replaced?

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mattbird
Member

Join Date: Aug 2008
Posts: 6
#10
In reply to #4

Re: Special Sensor Required

08/15/2008 12:04 AM

Hi, The operators hand or knife actuates the sensor which puts an input into a relay & timer set up & recently upgrading some of them to a Zelio set up ( PLC ) which turns on a solenoid valve. Main issues steam & water actuating sensor which could be over come by positioning but then operator does not have the time to detour to do this.Sensor being damaged. Prox sensors would be ok for knife steriliser but the sensing distance is the issue.They used to have manually operated valves but hygiene,water containment and the amount of water wasted was why they went to sensors. Just trying to find someone who already uses a sensor in this same application that does not put up with these nuisance issues. Cheers
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Anonymous Poster
#5

Re: Special Sensor Required

08/13/2008 11:27 PM

hey,

I am a planning and sourcing engineer who works for Trolex a UK based company which make sensors for hazardous environments.There are sensors which are made specially for hazardous environments.So have a look around in the net. You should be able to find some sensor with special housing which suits your needs
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The Commoner
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Join Date: Feb 2008
Location: Northeast Ohio, USA
Posts: 267
Good Answers: 9
#6

Re: Special Sensor Required

08/14/2008 7:45 AM

Perhaps I am old fashioned, but the old foot switch may do the trick.

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JohnDG
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#7
In reply to #6

Re: Special Sensor Required

08/14/2008 9:41 AM

Have a GA, m'boy!

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mattbird
Member

Join Date: Aug 2008
Posts: 6
#11
In reply to #6

Re: Special Sensor Required

08/15/2008 12:05 AM

Hi, The operators hand or knife actuates the sensor which puts an input into a relay & timer set up & recently upgrading some of them to a Zelio set up ( PLC ) which turns on a solenoid valve. Main issues steam & water actuating sensor which could be over come by positioning but then operator does not have the time to detour to do this.Sensor being damaged. Prox sensors would be ok for knife steriliser but the sensing distance is the issue.They used to have manually operated valves but hygiene,water containment and the amount of water wasted was why they went to sensors. Just trying to find someone who already uses a sensor in this same application that does not put up with these nuisance issues. Cheers
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Users who posted comments:

Anonymous Poster (1); JohnDG (2); Jusup (1); mattbird (5); PWSlack (1); Skeeter (1); The Commoner (1)

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