TM Pressure Mat Sensors Overview Pressure Mats were initially designed for security applications to comply with the British PM1/PK standard BS 4737 Part 3: Section 3.9. Pressure mats will covertly detect a person standing or walking on them. The smaller pressure pads may also be used as a floor mat, operated by hand pressure, in a chair or seat to detect a person sitting. Many applications have been found for pressure mats/pads, covert detection, sensors for interactive toys, the health care industry, detecting a person sitting in a seat or chair, sensors for interactive multimedia systems, i.e. when a person stands on a floor mat PM2/PK a multimedia presentation is triggered providing accurate targeting. There are many possible applications. They are able to manufacture custom sizes, fit alternative leads upto 3 metres in length with or without custom plugs or connectors. Pressure mat sensors should not be used in or relied on in safety related applications. PM3/PK Specifications: Contact Form : N/O normally open Contact Rating : 10V A (Max.) Switching Voltage : 25V DC (Max.) Switching Current : 0.25 Amps DC Resistive (Max.) Carry Current : 0.25 Amps DC Resistive (Max.) Contact Resistance : Typically 1 dependant on applied pressure Temperature Range : - 10C to +70C Environmental Protection : IP64 not waterproof Standard Operating Pressure : Nominal 25kg over 50mm disc Increased Sensitive and Operating Pressure : Nominal 16kg over 50mm disc 2 Cable 4 Separate Wires : 150mm of 7 0.22 Construction and principles of operation and use The switch element is welded into a PVC envelope and is completely dust proof and sealed to IP64 (not waterproof).Pressure mat sensors have a normally open contact which closes or shorts when a person walks onto or stands on the mat which then are opens or breaks as the person moves off of the mat. Operating pressure guide The nominal operating pressure for the standard sensitivity pressure mat is 25kg applied to the surface of the mat over a 50mm disc. The increased sensitivity versions will operate when 16kg is applied to the surface of the mat over a 50mm disc.In reality the standard sensitivity pressure mat sensor placed under a carpet will always be sensitive enough to detect a person walking over it. The more sensitive versions would usually be used to detect a lighter weight, hand pressure or detecting a person sitting in a seat or chair. TM www.cpc.co.uk www.mcmelectronics.com Page <1> 16/02/15 V1.0TM Pressure Mat Sensors Fitting and adjustment Pressure mat sensors should be fitted on a flat smooth surface and covered with a conventional floor covering such as carpet or lay flat rubberized matting. The covering is important to both protect the pressure mat sensor from damage and also to ensure there are no trip or slip hazards. Care should be taken not to stress the cable to pressure mat junction, this is especially important where long leads are fitted. If fitting a pressure pad to a chair seat the pad must be fitted to the flat rigid base of the seat, covered with a layer of protection, usually cushion foam or padding and then upholstered. As there are variables in foam thickness, density, upholstery material and fitting, customers will need to test for themselves the viability of a pressure pad in this type of application. Schematic diagram for a 4 wire pressure mat In a 4 wire configuration the two wires on the far left are the tamper loop. These are only needed when connecting to an alarm control panel. The two stripped wires on the right are the normally open pressure mat contact. Part Number Table Description Part Number Pressure Mat, Stair, 595mm 170mm PM1/PK Pressure Mat, Standard, 720mm 390mm PM2/PK Pressure Mat, Large, 720mm 560mm PM3/PK Important Notice : This data sheet and its contents (the Information) belong to the members of the Premier Farnell group of companies (the Group) or are licensed to it. No licence is granted for the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness, any error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make any assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Groups liability for death or personal injury resulting from its negligence. Defender security is the registered trademark of the Group. Premier Farnell plc 2012. TM www.cpc.co.uk www.mcmelectronics.com Page <2> 16/02/15 V1.0