Calculate water height from pressure — calc_water

Converts pressure readings from vented or unvented water-level sensors to water height in meters.

Usage

calc_water_height(sensor_kPa, atmo_kPa = NULL, water_temp, type = "vented")

Arguments

sensor_kPa: Numeric vector. Sensor pressure in kilopascals. For type = "vented", this is differential pressure from the water column. For type = "unvented", this is absolute pressure.
atmo_kPa: Numeric vector. Atmospheric pressure in kilopascals. Required when type = "unvented".
water_temp: Numeric vector. Water temperature in degrees Celsius.
type: Character string. Sensor type, either "vented" or "unvented". Defaults to "vented".

Value

Numeric vector of water height in meters.

Details

The pressure difference is divided by water density and gravitational acceleration. Water density is calculated with calc_water_density().

References

Kell, G. S. (1975). Density, thermal expansivity, and compressibility of liquid water from 0° to 150°C: Correlations and tables for atmospheric pressure and saturation reviewed and expressed on 1968 temperature scale. Journal of Chemical and Engineering Data, 20(1), 97-105. doi:10.1021/je60064a005

Examples

calc_water_height(sensor_kPa = 19.2, water_temp = 15, type = "vented")
#> [1] 1.95962

calc_water_height(
  sensor_kPa = 120.5,
  atmo_kPa = 101.3,
  water_temp = 15,
  type = "unvented"
)
#> [1] 1.95962