DATA SHEET

Sundström PAPR SR500ex

(powered air purifying respirator — intrinsically safe)

Updated: 16 May 2008
Description:

Intrinsically safe (i.e. for use in explosive or ignitable atmospheres) battery-powered, fan-assisted air-purifying respirator that can be used as an alternative to negative-pressure filter respirators where these are recommended. This applies particularly to extended periods of hard work in warm conditions.

The fan can be used with certain Sundström hoods, face shields or full face masks. The fan unit is fitted with a suitable filter, and the filtered air is fed through a hose to the facepiece.
Product name:

Sundström SR500ex intrinsically safe powered air purifying respirator

Features:
  • Intrinsically safe
  • Single-button operation
  • Visible and audible alarms in case of interrupted air delivery
  • NiMh battery
  • Up to 6.5 hours' operation
  • Approximately 2 hours' recharge time
  • Supplied with 2 filters/cartridges/combinations
  • Can be used with hoods (SR520, SR530, SR561, SR562), shield SR540ex, or full face mask SR200
Visual display:
  • Normal operation
  • Boost fan operation
  • Dip in air flow/clogged particle filters
  • Battery low
  • Air flow obstruction
Air flow rate:
  • 175 l/min (normal operation)
  • 225 l/min (boost fan operation)
Temperature range:
  • Operation: –10°C to +40°C (14°F to +104°F) at <90% relative humidity
  • Storage: –20°C to +40°C (–4°F to +104°F) at <90% relative humidity
Low flow warning: <175 l/min
Filter thread: Rd 44 x 1/7"
Weight: With battery and P3 particle filter: 1,840 g (4.05 lbs)
Protection factors:
  • With hoods and shield: 200 (TH3)
  • With full face mask: 1,000 (TH3)
Intrinsically safe classification (EN standard):

II 2 G Ex ib IIA T3 (with SR540 shield or SR200 full face mask with polycarbonate visor)

II 2 G Ex ib IIB T3 (with SR520, SR530, SR561, SR562 or full face mask SR200 with glass visor)

II 2 D Ex ibD 21 T195°C (with any of the above)

(Explanation of classification markings:)
Symbol for risk of explosion
II Equipment group (explosive atmosphere other than mines)
2 G Equipment category (2=high protection level, zone 1, G=gas)
2 D Equipment category (2=high protection level, zone 21, D=dust)
Ex Explosion protected
ib/ibD Type of ignition protection (intrinsic safety)
IIA Explosion group Propane
IIB Explosion group Ethylene
21 Zone with combustible dust
T3 Temperature class, gas (+200°C max, surface temperature)
T195°C Temperature class, dust (+195°C max, surface temperature)