Relay type electronic flow switch signal line common should be connected to the power supply positive or negative
Air flow sensor - can output relay signal or voltage, current linear signal.
Oxygen Sensor --
Throttle position sensor
Temperature sensor - this is generally a linear voltage output. And to use with the thermostat
Hall sensor ---- is the inductive proximity switch, using the Hall principle. Detection distance will not exceed 10mm. The output signals are typically DC three-wire PNP or NPN outputs.
Cylinder pressure sensor - is the pressure sensor, you can output the relay signal can also be a linear signal.
Voltage sensor - is the voltage transmitter, 0-100V or greater voltage signal into 0 - 10V standard control signal to the processor.
Vibration sensor ---- detection of mechanical equipment, vibration, linear output or relay output.
Speed sensor ---- is the rotary encoder, the speed converted to pulse (5VDC) into the PLC or other processors for processing.
Current sensor - is the current transducer, 0-5A or greater current signal into 4 - 20mA or 0 - 20mA standard control signal to the processor.
