Tunable Diode Laser Hygrometer (TDL)

Description: Laser Hygrometer
Manafacturer: Maycomm Research Company
Model Number: AC19-400
UND Tag Number: 103510
Calibration Mixing Ratio Equations:
- TDL mixing ratios ≥ 4801.7 ppmv: w = 10^{1.2649*(log₁₀(w_TDL))²-7.8797*log₁₀(w_TDL)+15.6}
- TDL mixing ratios < 4801.7 ppmv: w = 10^{1.049*log₁₀(w_TDL)-0.1273}
- Calibration was done on Dec. 2, 2008 at NCAR
- Calibration excel sheet is found under /nas/und/Documentation/ directory.
Calibration Pressure Equation: slope: 0.9881 offset: 11.4694
- Calibration was done on March 11, 2009 at UND
- Calibration excel sheet is found under /nas/und/Documentation/ directory.

Problems

iop1
mpace
sikorsky
2005_summer
2006_spring
Febuary 26, 2011 Getting poor air sampling quality. Moved the TDL to the back left rack to shorten up air sampling length.
2015_leak