AEROTEST SIMULTAN

AEROTEST to measure the cleanliness of breathing air

Increasing damage to the environment and enforced regulations for breathing air quality such as DIN EN 12021 mean that the requirements to be met by the operators of filling stations are getting stricter all the time.

With the AEROTEST SIMULTAN HP portable breathing air tester to measure cleanliness, you will always be on the safe side!

Tester tubes simultaneously and accurately measure compliance with the concentration limit for CO, CO₂and water vapour in the compressed air. An “impactor” is used for simultaneous verification of mineral and synthetic oil content in the breathing air.

The breathing air tester has been to all but exclude the risk of incorrect measurements as a result of operator error. The device does not have to be calibrated either.

A pressure reducer and special nozzles keep volume flow constant at all times, thereby safeguarding consistently accurate measurements. The AEROTEST SIMULTAN HP breathing air tester checks for compliance with the limit values specified in standard DIN EN 12021¹ for breathing air¹, thereby providing effective protection for life, health and equipment.

¹ Check for concentration of CO, CO₂, water vapour and residual oil. Oxygen content is not measured.

AEROTEST HP
Carrier case	Length × width × height (mm):	350 × 300 × 85
	Colour:	Black
	Weight with contents:	approx. 3 kg
Pressure reducer	Input:	male thread G5/8-300 bar (connection by hand)
	Max. intake pressure:	300 bar
	Pressure gauge:	0 to 400 bar
	Output:	9 mm plug-in connector for measuring instrument
	Overpressure valve:	set to 10 +2 bar
Adapter 1	Input:	female thread G5/8-200 bar
Adapter 1	Output:	female thread G5/8-300 bar for pressure reducer
Adapter 2	Input:	female thread G5/8-200 bar
Adapter 2	Output:	female thread G5/8-300 bar for pressure reducer
Measuring instrument	Length × width (mm):	100 × 38
Measuring instrument	Height including Dräger tube mount (mm):	230
Connection for compressed air supply		9 mm nipple
Intake pressure	Set on delivery:	8.5 bar
Volume flow	CO and CO₂ tubes:	0.2 l/min
	Impactor and H₂O tubes:	4 l/min
	Tubes for nitrous gases:

AEROTEST ALPHA
Carrier case	Length × width × height (mm):	350 × 300 × 85
	Colour:	Black
	Weight with contents:	approx. 3 kg
Pressure reducer	Input:	Nipple
	Max. intake pressure:	15 bar
	Pressure gauge:	0.3 to 15 bar
	Output:	9 mm plug-in connector for measuring instrument
	Overpressure valve:	none
Adapter 1	Input:	9 mm coupling
Adapter 1	Output:	Male thread G 1/4
Adapter 2	Input:	Female thread G 1/4
Adapter 2	Output:	12 mm nipple
Measuring instrument	Length × width (mm):	100 × 38
Measuring instrument	Height including Dräger tube mount (mm):	230
Connection for compressed air supply		9 mm nipple
Intake pressure	Set on delivery:	3.0 bar
Volume flow	CO and CO₂ tubes:	0.2 l/min
Volume flow	Impactor and H₂O tubes:	4 l/min

BAUER Accessory Systems – The ideal enhancement to your compressor

Description

The measuring principle (verification of oil content)

Compressed air flows through the 20 nozzles of the impactor and vertically hits a baffle plate made from cut glass.

On account of the air being deflected 90° in the impactor, the aerosol particles are unable to follow the airflow due to their inertia and are separated on the glass plate.

The indentations in the cut glass are filled with oil, counteracting the light scattering caused by the cut glass. This principle provides a visual indicator of very low oil quantities.

Thanks to the special arrangement of the nozzles, it is possible to measure the quantity of oil separated. The measurement result is not depending upon oil type.

However, remember that oil aerosols solidify at increased temperatures and there are no visual signs of vapour. Although compressed air cools during depressurisation, this is not relevant for the specified temperature range.

Measurement and evaluation

Connect the AEROTEST SIMULTAN HP breathing air tester to the compressor, the compressed air cylinder or the compressed air line.
Prepare the breathing air tester by flushing through the compressed air to be tested for at least 3 minutes (without the impactor).
The volume flow (4 l/min) is prescribed automatically by the breathing air tester.
Slide the impactor into the connecting adapter as far as the stop.
Insert the connecting adapter into the measuring instrument of the breathing air tester in the direction of the arrow (the open side of the adapters should point towards the measuring instrument).
Insert the tester tubes into the measuring instrument of the breathing air tester.
Take the measurement. Take the measurement for 5 minutes (use the breathing air tester’s stopwatch).
Peel the protective film away from the impactor and read off the oil concentration.

AEROTEST SIMULTAN

AEROTEST to measure the cleanliness of breathing air

Description

The measuring principle (verification of oil content)

Measurement and evaluation

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