Asthma Relief

Technical Data

Environmental Conditions

 

For operation

For storage

Temperature

+5degC to +35degC

-5degC to +50degC

Atmospheric pressure

850 to 1070 hPa

550 to 1100 hPa

Humidity

0 to 65% r.H

0 to 65% r.H.

Performance data

Flow of free air

The free air delivered by the pump at various stroke rates is as follows:-

Strokes/min

Free air delivered (litres/min)

30

6.3 litres/min

40

7.7 litres/min

50

9.4 litres/min

Performance under load

The flow and average pressure against an Amal jet no.45 at various stroke rates at 25degC are as follows:-

Strokes/min

Free air delivered

Average Pressure

Peak Pressure

 

(litres/min)

upstream of Jet (kPa)

upstream of Jet (kPa)

       

20

3.7

36

69

30

5.2

68

115

40

6.2

98

144

50

7.1

127

175

50*

6.0

102

139

* at 35degC and 65% relative humidity.

The stroke rate required to maintain a flow of 4 litres against resistance of Amal jet No. 45 is 23 strokes/min at 25degC.  The work required per stroke is 80N at a stroke rate of 30/min.  Maximum recommended stroke rate, 50 strokes/min.

Effect of ambient temperature

The volume of free air delivered by the pump and the average and peak pressures will decrease with increasing temperature.  Typical results at 25degC & 35degC are given in the table above.

Particle filter

Filter structure: polyamide monofilament, woven fabric, mesh aperture 10 micro; disposable; maximum life 12 months.

Weight: 700g

Dimensions  (h x w x d).

Packed 111 x 190 x 306 mm.