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However given that the panel inputs accept Open/Close contacts, the analysis capability is limited to measuring the duration and count of pulses, and not the actual strength or amplitude of the vibration.
In that case both Gross and Pulse count settings can be achieved with Comfort, although not under those names.
"Gross" level can be handled by the Zone Type sensitivity setting, from 20 ms to 800 ms (7 levels), is the duration of the activation. Lower values are for higher sensitivity and higher values for lower sensitivity.
Pulse count can be handled by the Vibration Analyser Response eg 3 counts in 30 seconds (both parameters can be changed) in the response. Hence Comfort gives fine tuning of the pulse count and timing compared to those which have fixed levels of pulse count like HKC.
These settings are useful when used with low cost vibration/shock sensors which have a ball and cup design and do not have inbuilt analysers
There are also many other shock sensors with analysers eg https://firesecurityproducts.com/product/intrusion/GS620BN/61841
From that link, it describes exactly how Comfort handles it except Comfort has another adjustable variable of 30 seconds for the pulse counts
"The analysing capability has two separate detection criteria: gross attack and pulse count. The gross attack threshold is designed to react to a single blow, while pulse count alarms when a pre-selected number of smaller shocks, occuring within a 30 second timing interval is reached. Both detection levels can be adjusted so that the installlation can be fine tuned to the environment and fully tested using the walk test facility. This digital signal processing is designed to eliminate false alarms and assure reliable detection of all types of attacks."
Comfort can be used with either type of sensor.
Last edited on Sunday Dec 31st, 2017 09:57 am by slychiu
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