Combined
use of multi-point detectors - gas and heat ones - that can significantly
improve the timing and positioning accuracy is one of the most promising solutions
for early warning fire detectors. In fact, at the stage of decay, carbon
monoxide is released at a high rate; at the stage of rapid ignition and
combustion - an instant rise in temperature occurs – thus, combination of heat
and gas sensors is the optimal solution. Variety of sensors to detect different
criteria of fire - multisensory -
greatly increases the likelihood of early detection of fire at different
rates of its emergence and development. Therefore, our
partner company - ETRA SPETSAVTOMATIKA LLC from Novosibirsk, as the result of
close partnership with the best scientific minds from Novosibirsk Academgorodok
- created a multi-sensory
(combined) multipoint fire detector based on ProCab processing cable. With
unparalleled rejection to nuisance-alarm sources (dust, steam, aerosols and
other deceptive phenomena) ProCab provides enhanced detection to a wide range
of products of combustion.
ProCab Multipoint
Multi-Criteria Fire Detector incorporates heat and gas sensors that are
combined into a single modular processor cable. It is designed to detect a
local increase in temperature or growth rate of the ambient temperature and/or
the appearance of products of thermal decomposition - than to transfer fire alarm
signal to fire loop. Thus, ProCab is meeting the requirements of Very Early Warning
Fire Detector (VEWFD).
ProCab fire
detector consists of a cable with the length of up to 2,400 meters, comprising
digital sensors, installed at regular intervals - the sensor element that is
connected to the processing unit. The sensor element is segmented into separate
areas - Cable Tails (24 m long) and into Extension Cables (up to 150 m). The
Cable Tail hosts built-in sensors, while Extension Cable is designed for data
transmission to the subsequent Cable Tails. Series connection of these segments,
as a whole, creates a definite sensor - ProCable - whose length varies freely
depending on the field applications of fire detection.
Processor
Cable (ProCable) - is a distributed multi-point measurement system of
parameters - based on these – Processor of the Cable Tail independently decides
on triggering of event (fire).
We
provide three types of ProCable:
• "ProCab"
IP101 -1- R -MT fire alarm heat multipoint cable (ProCable-HEAT) .
• "ProCab"
IP435 6 -MT fire alarm gas detector multi-point cable (ProCable-GAS) .
• "ProCab"
IP101/435-2-R-MT fire alarm multipoint combined cable (ProCable-COMBINED) .
ProCable
provides detection for the following response characteristics:
HEAT
classes: A1, A2, A3, B, A1R, A2R, A3R, BR, R
CARBON
MONOXIDE in concentrations ranging from 15 to 80 ppm.
Intelligent
Node Controller (INC) - an integral part of the Cable Tail that has the
following functions:
- Collecting data from sensors of the Cable Tail
- Making a decision on the event (fire or failure), based on: signal threshold, rate of increase in temperature, or on combination of measured parameters
- Transmission of the event’s occurrence and of its location (traced up to specific sensor) to Intelligent Terminal Controller
- Broadcasting of the data to the next Cable Tail and to Intelligent Terminal Relay Control Unit
- Nuisance-alarm protection
- Provision of power supply to sensors.
Intelligent
Node Controllers combine all Cable Tails into an information network of
series-type connection
As
opposed to the usual arrangement, Intelligent Node Controllers are processing
data of the group of sensors placed in specific Cable Tail, not of a stand-alone
one. This allows for:
- Accurate determination of the spatial distribution of controlled parameters
- Significant reduction of the volume of transmitted information to Intelligent Terminal Controller - as a consequence: provide for increase of the number of sensors and of multipoint detector length.
Intelligent
Terminal Relay Control Unit (ITRCU) provides power supply for the ProCable, as
well as management of Intelligent Node Controllers. ITRCU major function is to
generate information as result of ProCable operations – it is done through 20
contact relay groups and USB output.
Technically,
ProCab is a set of multi-point fire detectors that are unified by a single data line with ITRCU.
The triggering decision is made based on identification of the fire parameters
by any of heat or gas sensor.
ProCab
technical solution has two major advantages:
1. Improved location accuracy of fire. Cable
Tail’s Intelligent Node Controller triggers a response from a relatively small
group of sensors: thus, the spatial distribution of the measured parameters is
significantly higher than that of a one-point detector.
2 .
Significant increase in the protected area with one device. Intelligent Node
Controller triggers a response from the group of sensors, subsequently, only this
limited data is transmitted to ITRCU this allows for increase of number of
sensors and of ProCab length.
ProCab detector can simultaneously utilize gas and
heat sensors for enhanced fire detection
(multi-criteria),
as well as provide independent outputs for gas and heat detection. Any
combination of the sensors is possible. ProCab is extremely versatile and has
the following advantages and specifics:
- The modular design allows for field-selectable application profiles - depending on the type of expected fire, its parameters, on the operating conditions, on allocated cost
- High level of nuisance-alarm avoidance: the Node Controller for each of the sensor section transmits signal to common network only after filtering and update
- High quality and greater reliability of operation: transmission of information from sensors to controllers is carried out within the Cable Tail (24 meters long); at such a short distance there is no noticeable loss and distortion of digital data: that allows using sensors with 1-wire industry standard protocol
- Competitive cost-effective, viable solution that saves product, installation and maintenance costs
- Advantages of modular design (with 24 m long sections):
- Quick and efficient repair work in the event of damage
- Provision of electrical protection of sensors against surge and noise, as well as
their power feed
The
issues of applications of liner heat and multipoint fire detectors are widely
discussed in professional media. They are used in tunnels, cable tunnels and
ducts, at the warehouses and production shops of different kinds. ProCab solution
combines enhanced fire detection capabilities with relatively low cost, ease of
installation and scalability required for different field applications. Therefore,
this robust, reliable device is quite suitable for the most challenging
applications, opens a new area of deployment- where its characteristics are in
demand: concert halls, cinemas, healthcare installations, schools and kindergartens.
