Our "Brief guide for the designer" together with a range of specific application guides is available for download. These documents can be applied along with any relevant local codes or legislation to provide an outline proposal. AirSense Technology is happy to offer advice on a system proposal.
There are currently four types of dust separator supplied by AirSense Technology;
Filter Part No. Fitted To
30072 Stratos-HSSD-A®
Package "A" type detector - identified by a model number with the
prefix"MA" and the Stratos-HSSD-B® Package "B" type
detector, identified by the model number 30600 or 30601, located inside the
door.
30095 Stratos-Quadra detector, identified by the model numbers 30120, 30121,
30122 or 30110, located inside the door.
30699 Stratos-HSSD 2® detector, identified by the model numbers 30620 and
30621, located on detector chamber beside filter change label (Remove front
cover).
30755 Stratos-Micra detector, identified by the model numbers 30752 and 30753,
located on inside rear wall of detector (Remove front cover).
If you have any queries please contact AirSense
Stratos-HSSD-A® "
Package A" type detector - identified by a model number with the prefix"MA".
Stratos-ES® "Enhanced Sensitivity" - Identified by a model number
with the suffix "ES"
Stratos-HSSD-B® " Package B" type detector, identified by the
model number 30600 or 30601, located inside the front door.
Stratos-Quadra® Identified by the model numbers 30120, 30121, 30122 or 30110,
located inside the front door.
Stratos-HSSD 2® Identified by the model numbers 30620 and 30621 located
on detector chamber beside filter change label (Remove front cover).
Stratos-Micra® Identified by the model numbers 30752 and 30753, located
on inside rear wall of detector (Remove front cover).
Pipe clips should located at intervals of no greater than 1.2 metres.
As a rule of thumb 3mm sampling holes with 4mm end caps can be used on small and medium sized pipe runs. A copy of PipeCAD pipe modelling software is available for download, free of charge for accurate sampling hole size calculation. This software allows the user to model a proposed design and accurately determine the appropriate hole sizes to use. Estimated response times are also generated for each calculation to ensure the design is compliant to the required specification.
AirSense Technology can supply red ABS. Pipe of the correct size together with the associated fittings required to create a suitable sampling pipe network for most applications. The has been tested by LPCB, is of smooth bore, has an internal diameter of 22 mm and an external diameter of 27 mm.
In some applications
it is not practical or aesthetically undesirable to locate pipe work within
the risk, in these instances remote sampling points can be employed. The main
pipe run is located within a ceiling void or such area, a "T" piece
is used to interrupt the man pipe run and introduce one end of a 10mm flexible
tube at the desired point. The 10 mm diameter capillary tube then be terminated
with various fixings to provide an unobtrusive sampling point e.g. below a false
ceiling.
The Stratos-HSSD 2 and Stratos-Micra detectors communicate with either a command module or P.C. Interface and remote display units (RDUs) via an RS485 data loop. Fitting an existing Stratos-HSSD or Stratos-Quadra detector with a DOM (Digital Output Module) allows that detector to be connected to the RS485 data loop.
The maximum current consumption of the Stratos-HSSD 2 is 500mA at 24 Volts DC.
The maximum total length of pipe for the Stratos-HSSD 2 is 250 metres, please note that this total should consist of up to four pipe lengths that are within 10% of each other, to obtain a reasonable flow balance between pipes i.e. 4 x (62.5 metres ± 10%). The maximum single length of pipe fitted to a Stratos-HSSD 2 should not exceed 100 metres.
Each Stratos-HSSD 2 can protect a maximum of four standard sized air handling units, the best configuration for this application is one pipe per air handling unit. Each pipe should be spaced off from the return air register by a distance of 100 mm to 200 mm. This reduces the effect of negative air pressure acting on the sampling pipe. A piped exhaust may also be required to overcome the effects of pressure differential.
There are a variety of methods available for interfacing to a fire alarm panel. Supplied, as standard, with each Stratos-HSSD 2 detector are terminal connections for four programmable alarm levels and a common fault. All alarm relay outputs are volt free and normally open, the fault relay is normally closed to provide fail-safe operation. Also available as an option is a plug in Addressable Programmable Interface Card (APIC) please see "How do I interface to the fire alarm panel?" under FAQs for the Command Module for details.
The Stratos-Quadra detectors are specified by the number of detector heads they have installed. A Stratos-Quadra 4 can have four pipes connected with a maximum total length of 200 metres. Operation with 200 metres of pipe and 100 holes was independently verified during approval testing.
The detector gives normally open and normally closed volt-free relay contacts for the three alarm levels and for fault. An optional plug in card for connection to Apollo series 90 and XP95 fire panels is available from AirSense as well as many third party cards for other protocols.
It is recommended that the Stratos-Micra ® be used with no more than 50 metres of pipe and 10 sampling holes in still air. A greater number of sampling holes will often work but as air movement within the protected area increases, performance may be degraded.
Only one standard air handling unit should be protected, due to the relatively small size of aspirator incorporated in the Stratos-Micra ®. A piped exhaust type docking station may also be required to overcome the effects of pressure differential.
The software required to program a Stratos-Micra ® detector via a suitable laptop or PC is provided free of charge with each detector, together with a manual explaining the software operation. In addition you will require a screened RS232 Male to Female serial interface lead.
The Stratos-Micra ® has a maximum current consumption of 250mA at 24 Volts DC.
There are a variety of methods available for interfacing to a fire alarm panel. Supplied, as standard, with each Stratos-Micra detector are terminal connections for a fire level and common fault condition. Both relays are volt free, the fire contact is normally open and the fault relay is normally closed to provide fail-safe operation. Also available as an option is a plug in Addressable Programmable Interface Card (APIC) please see "How do I interface to the fire alarm panel?" under FAQs for the Command Module for details.
The Command Module is supplied as standard with terminal connections for four programmable alarm levels and a common fault. All alarm relay outputs are volt free and normally open, the fault relay is normally closed to provide fail-safe operation. Also available as an option is a plug in Addressable Programmable Interface Card (APIC). A Command Module linked to up to 127 detectors can then be connected directly to a main addressable fire panel loop.
The Command Module provides overall control and indication of up to 127 separate detectors located on an RS485 data loop from a single convenient point, the standard global relay output or optional Addressable Programmable Interface Card (APIC) may also provide a suitable single interface point. In addition the Command Module has a second RS232 serial port for connection to BMS systems using the BACnet communications protocol.
30620 If you
need the detection provided by a Stratos-HSSD 2 and the functions of the Command
Module at a single location then this model number is required, a suitable external
24 volt power supply will also be required.
30623 If the functions of the Command Module only are required i.e. no detection,
this model is required, comes complete with an internal power supply/battery
charger fitted and sufficient space within the detector to house 2 x Yuasa NP7-12
batteries.
30624 This
model offers the functions of the Command Module only, it has no 24 volt internal
power supply/battery charger or space allocated for battery storage.