5
2.
Technical specifications
Item
Range
Accuracy
Remarks
Operating pressure max.
0.5 bar
external pressure regulator and dryer are
required
Restricted air pressure scale
600 hPa
1.6%
Sample pressure scale
15 hPa / cmH
2
O 0.1 hPa / cmH
2
O
scale zero mechanism
Temperature
0-60
˚
C
2%
restricted air temperature
Flowmeter 1 range
0.1- 0.6 l/min
1.25% FSD*
Flowmeter 2 range
0.2- 2.0 l/min
1.25% FSD*
Flowmeter 3 range
1.0- 10 l/min
1.25% FSD*
Environmental conditions
Temperature
15-35 ˚C
(stable room temperature is highly recommended)
Dimensions
53 x 28 x 51 cm
(width x depth x height)
Weight
approx. 18 kg
(1 cmH
2
O = 0.981 hPa= 0.981 mbar= 0.000981 bar)
(1 bar = 0.1 MPa= 1000 hPa= 10.2 mH
2
O)
*: FSD = Full Scale Deflection is equal to the max value of the meter.
3.
Schematic construction
Principle of apparatus to measure the 1-dimensional air permeability of undisturbed soil samples.
Preferred: p = 0.5 bar
Maximal: p = 1.0 bar
