It is desirable that the doors at final exits in public buildings,places of entertainment ,shops etc should be fitted with panic devices operated by a horizontal bar or touch bar .The emphasis for products covered by this standard is on safe exit rather than security .
providing details on product types,classification by use ,test cycles ,door mass ,corrosion resistance as well as definitions,product performance requirements,test apparatus,test methods and marking products.
The main purpose of the performance requirements of this standard is to give safe and effective escape through a doorway with minimumeffort and without prior knowledge of the device i .e.for lock doors on escape routes where panic situations can be for seen .
BS EN 1125 Classifies panic exit devices by using a 9 digit coding system ,each digit referring to a particular feature of the product Measured against the standards performance requirement .
Digit 1-Category of use Only one category is identified . -grade 3-High frequency of use by public and others with little incentive to exercise care .
Digit 2-Durability Two categories are defined . -grade 6：100，000 cycles -grade 7：200，000cycles
Digit 3-Test door mass Two categories are defined . -grade5：Up to 100kg -grade6：Up to 200kg
Digit 4 –fire resistance Two grades of fire resistance are identified : -grade 0：Not appropriated for use on fire/smoke door assemblies -grade 1：suitable for use on fire/smoke door assemblies subject to satisfactory assessment of the contribution of thePanic/emergency device to the fire resistance of specified fire/smoke door assemblies.
Digit 5-Safety All panic and emergency devices have a critical safety fun thereforeOnly the top grade 1 is identified .
Digit 6 –Corrosion resistance Two grade of corrosion resistance are identified according to EN 1670. -grade 3：High resistance -grade 4：very high resistance
Only one category of security is identified grade 2:
Panic devices are primarily for the operation of a door from the inside. Safety consideration will always be given over security.
Digit 8 - Projection of device
Two categories are identified.
-grade 1: projection up to 150mm(standard projection)