Electronic. These are expensive devices. Their performance may be affected by temperature and battery charge.
Mechanical. They are produced in a metal case, otherwise called automotive. If this device has successfully passed the test, then you will not find better. To get the most accurate value, since you will only need to measure 1-2 atm., it is better to buy a device with a large number of divisions on the measuring scale.
Inexpensive pumping stations and automatic pumps are most often equipped with pressure gauges in a plastic case. The error in the readings of such Chinese models is too great.
If the tank has less air than necessary, water will take its place. This will affect the water pressure in the water supply system. At high pressure, the pressure will always be high. Higher pressure will provide a smaller supply of water in the membrane bulb, so the pump will have to turn on more often. If there is no light, the water supply may not be enough for all needs.
That is why it is sometimes wiser to sacrifice pressure to achieve other important goals. However, it is better not to reduce the pressure below the recommended values, as well as not to exceed the maximum characteristics. Insufficient pressure can lead to contact of the bulb surface with the tank body, which is undesirable.
You can use different devices to measure pressure, but the best option is a relatively inexpensive car pressure gauge with a metal body and a fairly detailed scale of measurement results.
For household appliances to work properly, the pressure in the hydraulic tank must be in the range of 1.4-2.8 atm. For better preservation of the membrane, it is necessary that the pressure in the water supply system exceeds the pressure in the tank by 0.1-0.2 atm. For example, if the pressure inside the membrane tank is 1.5 atm., then in the system it should be 1.6 atm.
This is the value that should be set on the water lebanon mobile database relay, which works together with the hydraulic accumulator. For a one-story country house, this setting is considered optimal. If we are talking about a two-story cottage, the pressure will have to be increased. To calculate its optimal value, use the following formula:
Vatm.=(Hmax+6)/10