How to build a filter penetration test - ProjectMask

List of required components

NR:	Type of component:	Quantity
1	Baseplate	1
2	M6 threads 200 mm	4
3	M6 nuts	12
4	125 mm clamps	2
5	134 mm clamps	2
6	PVC pipe 125×5 mm 280mm	1
7	PVC 90 degree bend 125 mm	1
8	Flange 125 mm to 134 mm	1
9	PMMA pipe 134×5 mm 300mm	1
10	Mask clamp assembly	1
11	Air hose connection	3
12	PVC pipe 32×3.5 mm 100 mm	3
13	PVC 90 degree bend 32 mm	2
14	Silicone sealant	1
15	PVC tape	1

Specification of standard parts used

Particle counter

Portacount pro+ 8038

TSI PortaCount Pro+

Particle generator

ATM 226

ATM 226

Air speed control setup

As described in ‘Building manual – breathing resistance setup’, a breathing resistance setup should be built. However, it should be altered by adding a potentiometer and screen to allow the user to change the volume flow. The potentiometer setting tells the Arduino to change the PWM to the blower which changes the volume flow. The resulting flow and PWM setting is displayed on the screen.

The setup for this is dependent on the used hardware and only requires the addition of a pot and screen on the breathing resistance test. Hence will not be discussed in detail here. However, the Arduino code with explanation is included in the downloads. We have used a 16×2 LCD screen setup successfully, which is described in the following web page:

https://www.arduino.cc/en/Tutorial/LiquidCrystalDisplay