phfit: This function fits pH calibration parameters This function...

In afsc-gap-products/gapctd: Process CTD data from bottom trawl surveys

This function fits pH calibration parameters This function estimates pH calibration parameters using Sea-Bird's calibration equation.

Description

This function fits pH calibration parameters

This function estimates pH calibration parameters using Sea-Bird's calibration equation.

Usage

phfit(ph, ph_voltage, temperature)

Arguments

ph	ph of the reference standard
ph_voltage	Measured pH channel voltage at the reference standard
temperature	Reference standard temperature in degrees celcisus

References

Sea-Bird Electronics Application Note No. 18-1. SBE 18, 27, and 30, and AMT pH Sensor Calibration (PHFIT Version 2.1) https://www.seabird.com/asset-get.download.jsa?code=250995

Examples

# Example calibration using three pH reference standards (4, 7, 10)
# Temperature = 23 degrees C
# Measured voltage (e.g. from Real-Time Data Acquisition in Seasave V7)
# See also: SBE pH Sensor Calibration. https://www.youtube.com/watch?v=4uMc5H66dVQ

phfit(
  ph_voltage = c(1.977, 2.797, 3.534),
  ph = c(4, 7, 10),
 temperature = 23)

afsc-gap-products/gapctd documentation built on March 5, 2025, 3:42 a.m.