It can go into a tee in the Plumbing or into one of the 1/4" taps on the tank tee if you have one. It really doesn't matter how you do it as long as the switch is close to the tank.
Lick it.
If your pump is capable of making more pressure than it is now, you can turn up the pressure switch.
The size of tank is immaterial. ALL domestic well water pressure tanks should have 28 or 38 psi when nearly empty. The difference is whether it has a 30/50 or a 40/60 pressure switch on it.
with a pressure tank and pressure switch
No, the static pressure in a pressure tank is determined by the pre-charge setting of the tank (typically 2 psi below the cut-in pressure of the switch) and the physical volume of water in the tank. Adjusting the pressure switch will only affect when the pump turns on and off, not the static pressure in the tank.
residual air pressure in the tank, and the pressure switch settings
no you should not
The pump will switch on frequently. This indicates lack of air in the pressure tank which is the most common problemThe pump will switch on frequently. This indicates lack of air in the pressure tank which is the most common problem
Install a gauge in the plumbing. Usually 1/4" pipe thread. Or you can use a tire gauge and check the pressures on the Schrader valve on the tank. With the Pump on, you will be reading system pressure. With the pump off and all water pressure released from the system, you are reading tank pressure.
Check the spec tag on your water tank. It should be 10 PSI lower than the factory settings. Normally around, 28 PSI for a 30 gallon tank. the air pressure is to be set at 2 to 3 psi lower than the pump turn on pressure.
A water pressure switch is commonly used to control a well pump. The switch is installed at the pressure tank and when water goes out of the tank pressure drops . When pressure gets to 30 psi that's usually the setting for the switch to activate the pump. The pump will come on and run for 2-5 minutes replenishing the tank to 50 psi then the switch will turn it off. (some systems are 40-60, but 30-50 is common)
It depends on which pressure switch you have. The total pressure with a 60-80 switch is about 84 psi.