How to measure the volume of pumped air per unit of time, as well as the pressure of the air flow?

Question

Cooling systems

Hello.
How to measure the volume of pumped air per unit of time, as well as the pressure of the air flow?
1. What devices are needed for this?
I assume that an anemometer with a flow meter is needed to measure volume, but are there any anemometers that can also measure airflow pressure? (well, as in the performance characteristics of the cooler, for example, they write the pressure in mm of water column, is this how to measure it?).
2. What is the measurement technique? If the sizes of the coolers are different, etc., how to correctly calculate the volume, etc.?

The point is. There are three coolers. Different number of blades, different blade angle, different rotation speed. Need to test and compare performance. And also find out the pressure that the cooler can create. What and how is it better to do it?

Answer 1

The pressure can be measured directly. You will need a rigid airtight box with a hole (cardboard, bottle - will not work) and a pressure gauge. You can make a pressure gauge by bending a transparent tube in the shape of the letter U and drawing a scale. 0 will be the water level when the fan is off.
Then everything is simple - connect the pressure gauge to the box with a hole and put the cooler there. Turn it on and see how much he inflated.