Pressure Transducers:Three other names commonly used for pressure transducers:
- Pressure Sensors
- Pressure Probes
- Pressure Transmitters
The basic function of a pressure transducer is to take pressure and turn it into an electric signal. The electric signal is processed, combined with known information about the water density, and converted to a height measurement. The height measurement is typically recorded on a data logger.
Here's a schematic:
There are a couple sources of error associated with pressure transducers:
1.) Air pressure above the water must be accounted for
2.) Since the pressure transducer is measuring pressure and converting it to water depth, the density of the water is a critical parameter. For instance, salt water has a different density than fresh water. Cold water has a different density than warm water.
Pressure transducers may be damaged if exposed to extreme pressures.
Range: 0-40 feet
Accuracy: 0.1% of the full range