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Sigma 2 Breathing Apparatus
ZD-SCT1100
SIGMA 2
Self Contained Breathing Apparatus
The Scott Sigma-2 is an open circuit, self-contained, compressed air breathing apparatus. It consists of a back plate, carrying harness and pneumatic system, consisting of a reducer with integrated cylinder connector, pressure gauge, whistle and demand valve.
The Sigma can be configured in a number of different ways with various sized single cylinders and the choice of Vision 3, Panaseal, Panavisor or Promask PP facemask.
Applications
The Sigma-2 is specifically designed as a Marine/Industrial Fire Fighting SCBA, but is also suitable for providing respiratory protection for any IDLH environment.
Approval Information
• CE marked in accordance with EN137:1998
• MED
Materials
Pressure Reducing Valve Facemask |
Nickel Plated Brass Neoprene, Silicone or Procomp |
Maintenance/Servicing/Cleaning
N.B. - Cleaning should only be carried out as specified in the user instructions.
Maintenance and Servicing must only be performed by trained personnel following the procedures in the Service and Maintenance manual.
Technical Specifications
Tempest Demand Valve
Compact positive pressure demand valve featuring servo-assisted, tilting diaphragm mechanism with low inspiratory resistance and responsive dynamic performance, automatic first breath actuation and hands free bypass facility. Components injection moulded from Polyamide and Acetyl with rubber seals and diaphragms.
First breath activation -20 to -30 mbar
Peak flow performance In excess of 500 litres/minute
Bypass flow 150 litres/minute nominal
Static positive pressure 1.0 – 4.0 mbar
Reducing Valve
First stage pressure reducing valve featuring non-adjustable, spring loaded piston mechanism and outlet supply protected by pressure relief valve. Valve body and cap machined from nickel-plated brass with stainless steel spring and hose retainer U-clips.
Outlet pressure
200 bar inlet 5.5 to 9.5 bar
300 bar inlet 6.0 to 11.0 bar
Pressure relief valve protected Approx. 13.5 bar
Flow restrictor to gauge supply hose <25 litres minute
Pressure Indicator & Warning Whistle
Bourdon tube type dial indicator
Heat and Impact resistant Polycarbonate lens
Safety blow-out vent in rear of gauge - accuracy:- +/- 10 bar between 40-300 bar
Hoses
Stainless steel swivel hose fittings
Medium pressure hose
Maximum working pressure 16 bar
Minimum burst pressure 80 bar
High pressure hose
Maximum working pressure 450 bar
Minimum burst pressure 800 bar
Packing Specifications
Single 69x41x28cm 5kg
Weight/Dimensions
Single configuration (less cylinder) 2.3kg
Single configuration & facemask (less cylinder) 3.0kg
Length 600mm
Width 278mm
Depth (with 6.0 litre 200 bar cylinder) 200mm