Instrument - 1W Chamber Sensors: RH/T, lighting

Short name:
1W Chamber Sensors

Full name:
1W Chamber Sensors: RH/T, lighting

What is being measured:
Chamber properties (T, RH, lights)

Sampling Protocol:

RH/T sensor: Vaisala

RH/T: HMT310 transmitter, HMT313 probe

Instrument year :

Data recording software:
MICAS-X (Labview-based platform)

Data analysis software:

Raw data time resolution:
1 sec

Analysis data averaging:

Detection limit:
0 to 100% RH, -70 to 180 C

Sensitivity to temperature (and correction method, if applicable): :
RH: ± (1.0 + 0.008 × reading) %RH.

Sensitivity to relative humidity (and correction method, if applicable): :

Sampling method:
RH/T Sensor placed in chamber enclosure, pulling ~0.1 lpm sample air across sensor

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:
Onboard instrument

Calibration method:
Manufacturer calibration every 2-3 yrs

Calibration drift estimate:
Low (on the order of weeks)

Calibration schedule:
Every 2-3 years

Uncertainty estimation method:

Known interferences:

Link to supplemental information:

Additional notes:
Chamber UV and visible light read values are integrated in MICAS-X control software (Labview-based platform). For the UV, this corresponds to the % of the UV lights that are on (measured as driving power since there are 2 types of UV lamps), which approximately reflects irradience output. For UV, discrete groups of lights are turned on together and are either fully on/off. At each UV light level, illuminated banks are roughly distributed evenly around the chamber enclosure walls. For the Visible lights, this corresponds to the % level that all the Vis lights are powered at, as the Vis lights are controlled by dimmers, allowing individual light banks to be operated over a continuous range from ~10% to 100%.

Measurement uncertainty:
RH <3%, Temp: ±0.2 °C at 20C, ±0.25C at 40 C

Measurement units:
See below