Spark Detection & Extinguishing

T & B electronic – Spark Detection & Extinguishing

T&B electronic provides spark extinguishing systems and has been VdS-approved since 1984 . Fires and explosions are an important issue in many industries where bulk materials are handled. Based on our VdS-approved fire protection system we design customized protection concepts for the protection of filters, silos, processing machines, pneumatic suction systems and many more production applications.

Spark Alarm Units

Microprocessor-controlled spark alarm unit for 2 to max. 36 monitored areas.

Modular structure in different versions:
BM6-2: Equipped for 2 lines,
BM6-4: Equipped for 4 lines,
BM6-16 and BM6-36: Basic version equipped for 4 lines, by additional components a later extension up to 16 or 36 lines is possible.

4 languages installed, maybe switched at any time. The report memory can store up to 2,500 events. All messages are shown as plain text on a LCD-display. The unit records and displays the number of sparks detected, the extinguishing times and whether any machinery has been switched off. Events can be transmitted and data exchanged with other systems via optional OPC- or USB-interface.

Spark Detector FSK

The FSK-1 (FSK-2) spark detector is an opto-electronic monitoring system and has been developed to detect sparks in the near infrared range. The spark detector is suitable for installation in closed piping systems where no outside light can enter the pipe. The spark detector can be installed easily in pipes of different nominal dia/meters (100 – 2000 mm) without any modification of the existing suction system thanks to its special housing. Inspection flaps for maintenance work are not required. Installation diameter is 40 mmand is quickly cut with a special hole-cutter. Maximum ambient temperature should not exceed 60° C. The spark detector is designed to protection class IP 65.

Spark Detector FSL/FST

Spark detector FSL
Spark detector with optical fibre for temperatures up to 300° C.

Spark detector FST
Housing as spark detector FSK-1 (FSK-2), but with the following modifications: daylight insensitive thermal spark detector for detecting sparks and heat radiation above 300°C with built-in daylight filter. Suitable for installion in open systems subject to extraneous light, but without direct exposure to sunlight. Maximum ambient temperature of the electronic components 60°C.

Spark Detector FSKS

Electronics as spark detector FSK-1 (FSK-2), but with the following modifications: acid-resistant plastic housing, completely sulphuric acid proof. The spark detector is suitable for installation on production lines in the battery and chemical industries. Detection range up to approx. 25 metres.

By-Pass Smoke Detector BRM1

By-pass smoke detectors are installed in exhaust air ducts and on the cleaned gas side of filter housings in order to prevent filter fires. Air is extracted continually from the system being monitored by a series of pipes, and fed to an optical smoke detector. In the event of an alarm, the filter system can be switched off or an extinguishing device activated.

Thermal Detector THM1

Overheating of material, which could lead to a fire, or temperature in creases during the production process, are monitored by thermal detectors. In the event of an alarm, the filter system can be switched off or an extinguishing device activated.

SP1D-R

SP2D-R

Extinguishing Devices

Automatic extinguishing devices are used for fast, reliable extinguishing of sparks detected in mechanical and pneumatic conveyor systems. There are various versions of the automatic extinguisher, differing in the number of extinguishing valves and nozzles used. The following extinguishing devices are available, depending on the diameter of the suction pipe or shaft:

· SP1D-R for up to 400mm pipe diameter
· SP2D-R for up to 800mm pipe diameter
· SP1D-R + SP2D-R for up to 1200mm pipe diameter
· SP2D-R + SP2D-R for up to 1600mm pipe diameter

SP1D-R + SP2D-R

SP2D-R + SP2D-R

Pressure Booster System WDS

A pressure booster system WDS is required in all cases where a flow pressure of extinguishing water of Pmin =7 bar to the extinguishing system cannot be guaranteed. The WDS system consists principally of multi-stage vertical centrifugal pump and a membrane pressure vessel (admission pressure 7 bar). Extinguishing water used is automatically replaced after each extinguishing procedure. The VB supply container is only required if a supply of at least 240 litres/minute cannot be guaranteed for the centrifugal pump. The supply container also serves to provide a biological separation between town water supply and extinguishing water.

Flow Switch DFW

In conjunction with the standard fitted extinguishing water control at the spark alarm unit, the flow switch monitors the extinguishing devices and their operation. By installing the flow switch, the following conditions are reported from the spark alarm unit:

Light bar:
1 = Water supply fault
2 = Alarm on, no water
3 = Water on, no alarm
4 = Water on, no production

Water Tank VB1/VB2

Water tanks are used, if a water flow of 180 l/min at 2 bar cannot be ensured by the available water supply. Additionally by the pressure-free inlet a biological separation between city water and extinguishing water is achieved, i.e. it cannot flow back possibly contaminated water into the potable water supply system.

Waterpipe Heating

Self-regulating heating band HB1
If extinguishing pipes are laid in areas prone to frost, they must be protected against freezing. By means of the self-regulating heating band, the extinguishing system is warmed up electrically.

Connection set AG1
The connection set (shrink-on sleeve), together with the relevant connection box, is used for connecting the self-regulating heating band to the normal installation cable.

Outdoor Thermostat TH1

The outdoor thermostat is used to switch the individual sections of the heating band on and off if the outside temperature falls too far (t = < 5° C).

Heating Band Monitor HBW3

The heating band monitor controls and monitors the separate heated extinguishing water circuits.