The probe SWA 31E with Swema 3000 measures 0,1.
..30m/s and is temperature compensated from -10 to +45°C.
On the 116 cm long telescopic shaft there is a scale for easy placement in ventilation ducts. The measurement is displayed directly or with a number of points as average, max and min.
Flow calculation
The duct dimension as: diameter, height and width or area, can easily be inserted into Swema 3000 to make the instrument calculate and display the flow in l/s , m3/h or CFM. The most common standard dimensions are selected directly.
To get a good flow value in the duct the instrument makes an average of point measurements over the selected area. According to research, due to friction at the wall, there is a reduction factor k2, that reduces the calculated value.
Autosampling
For grilles, you enter the height x width using auto-sampling and a smooth sweeping technique across the grilles, Swema 3000 calculates the rate of air flow in l/s, m3/h or CFM. Set the time constant down to 0.25 sec to get 4 measurements /sec. Average, standard deviation, max and min is automatically calculated.
Fume cupboard measurements
SWA 31E measurements complies with EN 14175:3-4.
