polybear01 Posted July 30, 2017 Share Posted July 30, 2017 Hi, I have a couple of Pyronix Equinox E dual tec PIR's that have been great; however I'm now finding that they are becoming less sensitive during walk test (but no false alarms though). In fairness they're 20+ years old.... Is such behaviour the norm, and if so I've been looking at Pyronix KX15DT's - are these a worthy replacement? One last question - the Equinox E states a relay contact via a 4.7 ohm series resistor, yet the KX15DT incorporates selectable alarm resistor values of 6K8, 5K6, 4K7 &1K & tamper values of 5K6, 4K7, 2K2 and 1K. So what should I select? My panel tech spec. quotes a "Zone Activation Resistance" of 2Kohms (minimum)" if that's of help. Many thanks in advance polybear01 Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/ Share on other sites More sharing options...
sixwheeledbeast Posted July 30, 2017 Share Posted July 30, 2017 I have known older Pyronix sensors to decrease there coverage with age so it is a good idea to consider upgrading. I imagine most DT's would be suitable replacements. If your panel in double pole you are likely not to need selecting of any resistance and wire like for like. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466703 Share on other sites More sharing options...
polybear01 Posted July 30, 2017 Author Share Posted July 30, 2017 Many thanks; the zone type is described as "Normally closed loops which activate when opened or connected to 0 volts from dc power supply" - nothing about double pole though? polybear01 Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466704 Share on other sites More sharing options...
MrHappy Posted July 30, 2017 Share Posted July 30, 2017 2 minutes ago, polybear01 said: "Normally closed loops which activate when opened or connected to 0 volts from dc power supply" - nothing about double pole though? same thing 9 minutes ago, sixwheeledbeast said: sensors to decrease there coverage with age I assume the range has pot on it? Adjusting pot min to max a dozen times will probably see it right ? Mr Veritas God Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466705 Share on other sites More sharing options...
polybear01 Posted July 30, 2017 Author Share Posted July 30, 2017 Many thanks for the tip - it's sorted one but the other appears dead, so a new one (or possibly 2, bearing in mind postage costs being the same for 1 or 2, and they're only 20 quid each anyway) is needed. polybear01 Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466707 Share on other sites More sharing options...
james.wilson Posted July 30, 2017 Share Posted July 30, 2017 iirc Pyronix had issues with the lens degrading. You used to be able to get replacement lens securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466708 Share on other sites More sharing options...
sixwheeledbeast Posted July 30, 2017 Share Posted July 30, 2017 I have tried messing with the pot before but you seem to only get a few extra years out of them. Also been to a good few that have stuck active with the circuit board red hot, more of a reason to get them replaced. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466709 Share on other sites More sharing options...
polybear01 Posted July 30, 2017 Author Share Posted July 30, 2017 This is the cheapest I've found, once delivery is included - unless anyone can advise otherwise? https://www.citysecuritysystems.co.uk/pyronix-dual-tech polybear01 Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466711 Share on other sites More sharing options...
MrHappy Posted July 30, 2017 Share Posted July 30, 2017 1 hour ago, polybear01 said: Many thanks for the tip Just a temp fix, Mr Veritas God Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466712 Share on other sites More sharing options...
MrHappy Posted July 30, 2017 Share Posted July 30, 2017 30 minutes ago, james.wilson said: iirc Pyronix I really like controls with a castle heritage, but there a great commercial success rather than best product. 1 Mr Veritas God Link to comment https://www.thesecurityinstaller.co.uk/community/topic/41439-dual-tec-pirs-getting-insensitive-on-walk-test/#findComment-466713 Share on other sites More sharing options...
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