Vedard Alarm Security Export Sales Company
Vedard Alarm Security Export Sales Company
News
7 causes for false alarm of fire detectors
Source: http://www.vedardalarm.com
Date: 2018/08/21
Smoke detector, gas detector, heat detector, CO detector and compound detectors are used in fire alarm system. But false alarm caused by these detectors also led to serious loss. The worst is, false alarm in return caused misunderstanding of fire alarm system and people stop using it. People will remove the battery and not install it again if false alarm occurs. People may ignore real fire alarm if false alarm ever occurred.
It is impossible to completely eliminate false alarm. But we need to know the causes of false alarm and reduce the rate. The compulsory certification, ISO9001, ISO9002 standard implemented for products manufacture largely reduced false alarm rate. New technology analog fire alarm system, MCU processing detectors also reduced false alarm rate. But another main factor for false alarm of fire system is environment interference and misusing of the detectors. 7 causes for false alarm of fire alarm system are summarized as blow.
1.Non fire smoke but dust factors Reduce false alarm of fire alarm system
A.Cooking oil fume. If the smoke detector is installed in kitchen and near the oven, the smoke detector especially the ionization detectors will make false alarm. So, smoke detector can not be installed in kitchen. Heat detector and gas sensor should be installed in kitchen.
B.Smoking. For high sensitivity smoke detector, smoking may cause false alarm. So, the sensitivity should be adjusted according to environment or people should be noted without smoking at the place.
C.Steam. Smoke detector installed in bathroom may cause false alarm by steam. So, install heat detector instead of smoke detector in bathroom.
D.Dust. Smoke detector can not be installed at heavy dust circumstance.
Insecticide. Aerosol insecticide and air freshener may cause false alarm.
2.Environmental factor
A.Electromagnetic radiation. 7 causes for false alarm of fire alarm system
B.Airflow. Airflow may interferes ionization detectors more than photoelectric detectors.
C.Rapid temperature changes. The heat detector and compound detector can not be installed near the air conditioner or heater device outlet.
3.Quality of detectors
A.Design quality of the detectors.
Fault tolerance: the ability of system software to maintain normal operation under the action of known and unpredictable accidents.
Tolerance: the ability to maintain the system performance unchanged when the parameters of the system hardware components are discrete.
Environmental sensitivity: the ability of the system to maintain stable operation in the mechanical, climatic and electromagnetic environment which is stipulated in the national standards and is potentially used in practice.
B. Manufacture quality of the detectors.
Automatic manufacturing process, ISO processing standard implement and certification test largely increased detector quality and reduces interference and false alarm.
4.Man-made factors.
Someone smoking face to the smoke detector or push down the manual call point on purpose.
Not obey the detector using rules. Fire alarm system quality
5.Engineering project design fault.
Project design engineers are not technology certificated and made improper or wrong configure of the fire security project.
A.Installation location is wrong or not suitable.
B.Improper type detectors installation. For example, smoke detector is not suitable for garage and smoking room installation.
6.Poor installation of the fire alarm system
NFPA72 National Fire Alarm Code Chairman of the technical committee Wayne.D.Moore said that the main cause of false alarm is poor installation quality and pollution during construction. The fire alarm system should be installed after interior decoration of buildings to avoid pollution. The detector cover can prevent accidental mechanical damage and surface contamination only.
A.The fire alarm system is not earthed or well earthed. It makes the system vulnerable to electromagnetic interference and cause false alarm.
B.The construction quality is poor, the line insulation can not meet the requirements, the contact pressure of the connection is not good or the wiring is improper.
7. Component aging, dust accumulation and insect invasion.
Component aging will reduce system reliability and make false alarm. Detectors with more than 10 years using time should be replaced or rechecked before use again. Detectors should be cleaned every one year. Dust proof, moth proof design for the sensing cavity.
More News
China Security Exhibition 2019 Oct. 28th to 31st
Shopping mall and market interconnection security solution
Intelligent optical fiber perimeter security system
Garden solar alarm lamp
China Chemical plant explosion and Security Consideration
Fire and Explosion in Chemical Plant causes and prevention
Chemical plants fire escape methods and points for attention
Fire Alarm and automatic panel operation training
China Chemical plant explosion and Security Consideration
FIRE DETECTION & ALARM FOR PUBLIC BUILDING AND PREMISES
COMPLETE HOME SECURITY SYSTEM SELF-MONITORED
THEFT & BURGLAR ALARMS FOR HOME SECURITY
What to do with Fire alarm and How to recover alarm devices
How to install PIR and Door Contact for home security
PIR Passive Infrared Detector installing notice
Automatic fire alarm system terms of manual and automatic control
Is Burglar Alarm System useless?
6 home security solution for different budget and security levels
Electric Fire and Electric Socket
Security Service Network Alarm System upgrade
Explosion proof Fire Alarm Gas Detector Sounder Beacon
Solar Wireless PIR Detectors Features
Fire Alarm System Troubles Resolve Solutions
Fire Alarm Systems Maintenance and trouble shooting
How to avoid CO carbon monoxide poisoning
What is beam system and how does it work
Customers frequently asked questions about Solar Beam systems
How to clean Smoke Detector
Test Method and Notes for the Solar Powered Wireless Beams
Do not use water for these types fire extinguishing
How to disable Smoke Alarm temporarily?
Professional Security System installation standards
Home Security anti-theft knowledge and technology
How to escape from bus fire
How to use fire extinguishers
Flammable gas alarm installation and inspection
Addressable Fire Alarm System illustration
Building Fire Security System
Christmas Home Security Protection cautions
COMPLETE HOME SECURITY SYSTEM SELF-MONITORED
THEFT & BURGLAR ALARMS FOR HOME SECURITY
Wireless Fire Alarm System for commercial security
2017 China Security Fair News
Installing outdoor security cameras
Is Smart Home equal to App controlled Home
2017 China Public Security Exposition & Security Forum
Notice for wiring FC-7448 bus-line alarm system
How to install and debug FC-7448 Commercial Security Alarm System
2017 China Public Security Exposition
Combination of fingerprint lock and home security system
Cold Storage needs fire alarm system
Fire Security for garage, motor repair shop, parking area
FAS design notice
Photoelectric Beam Detection System Solution
How is sensor important for smart home
How to set up driveway alarm systems
Install intruder detector
Upgrade of PSTN network alarm service center
CMS server requirement and operation
meian tech wireless motion detector
Intrusion detector technology and development
intelligent security
Wireless fire alarm system
General Operation of Fire Alarm Control System
Addressable FACP MN300 Instruction
Alarm System Troubleshooting–Part 1 CMS
Alarm System Troubleshooting–Part 2 Alarm Control Panel
Alarm System Troubleshooting–Part 3 Detector
New technology security alarm server EAVS
Fire alarm system design
bus system security alarm technology
Fire Detectors types and selection
Exterior Security Protection
Home Incidents Prevention
Dangerous gas leakage Alarm Device Installation
Hotel Security Solution
Burglar Alarm System Installation Notes
Intelligent Community Security FAQ
Fire Indication on Alarm Control Panel
Fire Defighting System
Fire prevention and escape
Base Station Integrated Security Solution
Community Security Solution
October 25-28, 2016 China Security Exhibition
China Security Alarms Technology
Theft & Burglar Alarms for Home Security
Install Infrared Beams Detector
China Security Alarms Technology
Security System and Smart Home
Home Fire Prevention in Summer
Set up IP camera for home surveillance
Home Security Systems company Karassn cooperation
Pet immune Motion Detectors and the technology
How would you like to manage home security
Program Alarm Systems Solar Beam Detectors
Smoke Alarm types and connection
Question of Focus Security Alarm Systems
Security Alarm Systems Technical Supports
Security Service & DIY home security
Fire Alert Security Alarm Solution Signal Systems
Security Exhibition 2015 in Shenzhen China from 29th Oct.
Advanced Technology Burglar Alarm Systems
Install wireless door magnetic alarm sensor for rolling door
Fire guard read fire alarm manuals and test fire alarm systems before fire happening
Correct wiring Smoke Alarms for Fire Alarm systems
Carbon Monoxide danger
Questions for Solar-powered wireless infrared grating
Smoke Alarm Questions
Alarm system industry trend and alarm system installer job
Conventional Fire Alarm Security Solution
Perimeter Security Solution with Solar Beams
Reliable Wireless Alarm Systems
Smart Home & Secure Home
Flammable gas alarm installation and inspection
Program Alarm System and understand the terms
2014 Security China International Exhibition
Test Method and Notes for the Solar Powered Wireless Beams
Energy saving theft deterrent
Wireless Fire Alarm Solution For Hotel
Additional wireless detectors to existing alarm system
Home Alarm Security Service Development and the importance
Cheap or Quality China Alarms System
DIY alarms or Professional installed alarms
We help buyer buying China Alarm Security Systems
Alarm System Store for DIY without any consultant's advice
Cooperate with Alarm Systems Installers and Security Service
Digital Network Video Server alarm panel
Quick guide to program FC-7448 building security alarm panel
How to choose Motion Sensors from technology views
Advanced technique of intruder detectors
Integration of Security System
Wireless compare with Wired Alarm System