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Topic Title: Presence detectors in public toilets
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Created On: 25 June 2012 08:43 PM
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 25 June 2012 08:43 PM
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chriso

Posts: 67
Joined: 06 February 2007

Hi guys/gals,

I've been asked to price for presence detectors in a village hall's toilets. Typical arrangement, in through main door, then inner privacy door, into main area of urinals/basins with 2 toilet cubicles on the far side. In total the size per toilet is probably no more than 7x3.

I was thinking of 1 x main microwave presence detector in the hope that it could be fitted on ceiling of the main central area and tuned to detect in the cubicles and entrance section as well as the main area.

Has anybody tried and succeeded at this? Or should I just fit 3/4 x standard presence detectors (one above each area)?

Advice gratefully received

Cheers

Chris
 25 June 2012 09:15 PM
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peteTLM

Posts: 2769
Joined: 31 March 2005

Yes ive done both timeguard and some posh german make that i cant remember. Dual channel fitting, 1 channel for lights and 1 channel for vent.

Not had any complaints, but they are set at 15-20 minutes anyway as public building.

1 job they controlled a load of halers fittings, the other one philips led fittings

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Lack of planning on your part doesn't make it an emergency on mine....

Every man has to know his limitations- Dirty Harry
 25 June 2012 10:50 PM
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Avatar for Martynduerden.
Martynduerden

Posts: 3190
Joined: 13 July 2008

Repost.

you could try

Hager Tebis

KNX

Setsquare Setsquare are mainly presence based, there are a few sensors available.

Dali

Lutron though if you have a problem its most definatly YOUR problem


AMX very good systems, full controls on Richard Branson's Boat!


Simmtronic


Just a few to be going on with most are commercial based but offer home solutions.

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Regards

Martyn.

Only a mediocre person is always at their best



www.electrical contractors uk.com
 25 June 2012 10:57 PM
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chriso

Posts: 67
Joined: 06 February 2007

Thanks for the responses, I'd been looking at a Luminite SMW360.

Wondering whether it could be set to read through the privacy door, so that it picks you up when you walk through the first door. The privacy door is quite light and flimsy, equally the doors to the cubicles are pretty slim.

Just don't want to go ahead and then not have it function 100%!

Chris
 26 June 2012 12:02 AM
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sparkingchip

Posts: 5308
Joined: 18 January 2003

or be caught in the dark with your trousers down!

Andy
 26 June 2012 07:16 AM
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Fm

Posts: 397
Joined: 24 August 2011

Dalers as well with a no neutral required version
 26 June 2012 07:43 AM
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Rulland

Posts: 347
Joined: 11 April 2008

Motion sensors in the cubicles...............;-).....sorry!.

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Those who make no mistakes do very little work!!......
 26 June 2012 09:06 AM
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chris1982

Posts: 28
Joined: 09 August 2007

Originally posted by: sparkingchip

or be caught in the dark with your trousers down!



Andy


tell that to the hotel i stayed in last year on holiday, their electrician hadn't thought the job out as well as the people in this thread
 26 June 2012 11:26 AM
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BigRed

Posts: 516
Joined: 10 November 2006

Think tank in brum has one sensor by the door...on a 3 min timer.....dont ask how i know...:-)
 26 June 2012 01:10 PM
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impvan

Posts: 641
Joined: 07 September 2005

Microwave sensor should cover the whole room without any need for aiming or masking. I'd leave one light connected to the normal switch to give some background light, change to led if efficiency is an issue.
 26 June 2012 02:14 PM
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OMS

Posts: 17739
Joined: 23 March 2004

Before you start, check if you are not wasting your time or the clients money.

I was working on a zero carbon developement fairly recently and the initial brief was occupancy sensing in all WC's (and store cupboards).

We challenged it and offered to monitor the saving from a similar job we had just finished (which had DALI and Lighting management software, so easy to do.)

In a similar building type, the lighting effectively stayed on all day as the occupancy pattern exceeded the delay time.

Net energy saving - zero, net capital cost, - increased, whole life energy burden accounting for the detectors - increased. Shortening the delay time also caused premature lamp failure due to frequent switching.

Needless to say, we binned the idea at the clients request based on the evidence we provided

If it's a village hall, I guess it has defined opening and closing times (and a security system) - get the caretaker to switch on and off as required - or just fit a simple relay that opens when the security system is set (by definition, you then know the building is empty).

regards

OMS

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 26 June 2012 07:19 PM
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chriso

Posts: 67
Joined: 06 February 2007

I should have forseen the toilet humour this thread would provoke!!

I think it's probably worth doing, efficiency wise. For evening events I'm sure it won't make much difference. During the day however the hall is used by different groups for short periods and the loos don't really see a great deal of action.

I like the alarm link idea, unfortunately they don't have a security alarm. I always think places like this would benefit from a master switch, often easier to implement on new build. I guess that's along the lines of modern building management systems, still a little way off for your average village hall.

I'd like to go with just the one microwave detector, but I'm not totally convinced it will cut the mustard. It would save a lot of ugly surface trunking on the ceiling, might just have to bite the bullet and get one and try it out. I'll report back with my findings....
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