It means the filter needs replacement
Each time the heart contracts a sound is heard, a gauge on the sphygmomanometer measures the pressure that blood exerts during ventricle contraction.
bad sending unit in tank, or short in wireing.
In an EPR (External Pressure Regulator) valve, the gauge port typically installed is the high-pressure gauge port. This port allows for the monitoring of the pressure within the valve body, which is essential for ensuring proper functioning and efficiency of the refrigeration or air conditioning system. It helps technicians diagnose issues and maintain optimal performance by providing real-time pressure readings.
It will be a oil pressure sensor
bad ground or float stuck 2 possibilities i can think of
Water has a high pressure all the time.
Sand filters usually have a pressure gauge in front of them indicating the back pressure before the filter.When the filter needs to be cleaned this pressure gets high. usually it has a red section on the gauge. When it hits the red it is time to think about back washing. If the gauge does not work as so often happens with these things. you can usually judge it from the lack of suction coming from the filter. After backwash you will note the pressure will be down and the suction will be up.
To give the operator of the vehicle a real time and accurate check on the oil pressure of the engine.
To convert gauge pressure to absolute pressure, you need to add the atmospheric pressure. Since the atmospheric pressure at sea level is 1 atm, the internal pressure in this case would be 2.7 atm (25 psi gauge pressure = 1.7 atm + 1 atm atmospheric pressure).
The fuel gauge on a 1985 Chevy Silverado will read full all the time if the sending unit is defective or the wire has come loose. When the tank is full, the sending unit normally shuts off which cause the gauge to read full.
measure. Just as time is a unit of how long an event lasts, pressure is a unit of how much force is exerted over an area.
if its an older worn out bottom end (bearings and oil pump) its probably time to do an overhaul, start it and see if the gauge reads oil pressure, a Chevy smallblock can run with just 4 lbs of oil pressure