Instrument - Vaisala HMM211
Short name:
RHT Probe
Full name:
Vaisala HMM211
What is being measured:
Temperature and Relative Humidity
Sampling Protocol:
Online
Manufacturer:
Vaisala
Model:
HMM211
Instrument year
:
None specified
Data recording software:
Labview
Data analysis software:
Raw data time resolution:
30 s
Analysis data averaging:
Detection limit:
unsure
Sensitivity to temperature (and correction method, if applicable):
:
Sensitivity to relative humidity (and correction method, if applicable):
:
Sampling method:
Sample preparation method:
Sample residence time (chamber to instrument) (seconds):
Length of tubing (cm):
Instrument flow rate:
Tubing inner diameter:
Tubing material:
Chemical identification method:
Data analysis method:
Quantification method:
Calibration method:
Humidity was calibrated for RH from 11 to 95% (using LiCl, KNO3, Mg(NO3)2 and MgCl2 salts).
Calibration drift estimate:
Low (on the order of weeks)
Calibration schedule:
Every few years
Uncertainty estimation method:
standard deviations from the mean value
Known interferences:
Link to supplemental information:
Additional notes:
Measurement uncertainty:
(a) Time -- sometimes the clock drifts by as much as a few minutes, (b) T is plus or minus 0.2C, (c) not sure about RH
Measurement units:
T in Celsius, RH in percent