Description: | The tube heater is not functioning properly. On 6/27/06, site operations personnel
indicated the heater plug was found to be disconnected (The heater became disconnected on
6/12/06). It was reconnected and while the head temperature returned to normal, the tube
temperatures are still bad.
The purpose of the tube heater is to help prevent condensation from forming on the window.
The mentor has not noticed any problems with the data resulting from the tube heater
malfunction. However, since the instrument is technically not fully functional, this DQR
is being issued.
A repair attempt was made on June 7, 2007 that resulted in the tube temperatures reaching
at times into the upper 50s and sometimes even the lower 60s. The high tube temps
influenced the head temperature causing it to move into the upper 40s and sometimes the lower
50s.
The heater was repaired on Oct 11, 2007. Though repaired, the instrument was configured
to keep the tube temp in the lower 20s (deg C). This is acceptable, though to keep with
instrument specifications the setting was adjusted to keep the temps in the upper 30s (deg
C). This occurred on 8 Jan, 2008. |
Measurements: | sgpnimfrC1.a0: - Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
- Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
- Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
- Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
- Direct Normal Broadband Irradiance, raw data as read(direct_normal_broadband_raw)
- Tube Temperature(tube_temp)
- Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
- Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
- Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
- Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
- Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
- Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
- Second Detector Temperature(head_temp2)
- Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
- Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)
- lat(lat)
- Time offset of tweaks from base_time(time_offset)
- Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
- Direct Normal Narrowband Irradiance, Filter 1, raw data as read(direct_normal_narrowband_filter1_raw)
- Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
- Data Logger Supply Voltage(logger_volt)
- Direct Normal Narrowband Irradiance, Filter 3, raw data as read(direct_normal_narrowband_filter3_raw)
- Direct Normal Narrowband Irradiance, Filter 4, raw data as read(direct_normal_narrowband_filter4_raw)
- time(time)
- Direct Normal Narrowband Irradiance, Filter 5, raw data as read(direct_normal_narrowband_filter5_raw)
- Dummy altitude for Zeb(alt)
- Direct Normal Narrowband Irradiance, Filter 6, raw data as read(direct_normal_narrowband_filter6_raw)
- Detector Temperature(head_temp)
- lon(lon)
- base time(base_time)
- Direct Normal Narrowband Irradiance, Filter 2, raw data as read(direct_normal_narrowband_filter2_raw)
sgpnimfrC1.b1: - Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
- Dummy altitude for Zeb(alt)
- Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)
- Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
- Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
- Detector Temperature(head_temp)
- Normalized filter function data, filter 6, wavelength value obtained during
bench calibrations(wavelength_filter6) - Normalized filter function data, filter 5, wavelength value obtained during
bench calibrations(wavelength_filter5) - Normalized filter function data, filter 4, wavelength value obtained during
bench calibrations(wavelength_filter4) - Normalized filter function data, filter 3, wavelength value obtained during
bench calibrations(wavelength_filter3) - Normalized filter function data, filter 2, wavelength value obtained during
bench calibrations(wavelength_filter2) - Normalized filter function data, filter 1, wavelength value obtained during
bench calibrations(wavelength_filter1) - Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
- Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
- Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
- Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
- Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
- Solar zenith angle(solar_zenith_angle)
- lon(lon)
- Second Detector Temperature(head_temp2)
- lat(lat)
- Nominal calibration factor, applied to filter2 data(nominal_calibration_factor_filter2)
- Nominal calibration factor, applied to filter1 data(nominal_calibration_factor_filter1)
- Nominal calibration factor, applied to filter4 data(nominal_calibration_factor_filter4)
- Nominal calibration factor, applied to filter3 data(nominal_calibration_factor_filter3)
- Nominal calibration factor, applied to filter6 data(nominal_calibration_factor_filter6)
- Nominal calibration factor, applied to filter5 data(nominal_calibration_factor_filter5)
- Nominal calibration factor, applied to broadband data(nominal_calibration_factor_broadband)
- Normalized filter function data, filter 6, measured transmittance value obtained
during bench calibrations(normalized_transmittance_filter6) - Normalized filter function data, filter 5, measured transmittance value obtained
during bench calibrations(normalized_transmittance_filter5) - Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
- Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
- Normalized filter function data, filter 2, measured transmittance value obtained
during bench calibrations(normalized_transmittance_filter2) - Normalized filter function data, filter 1, measured transmittance value obtained
during bench calibrations(normalized_transmittance_filter1) - Time offset of tweaks from base_time(time_offset)
- Normalized filter function data, filter 4, measured transmittance value obtained
during bench calibrations(normalized_transmittance_filter4) - Normalized filter function data, filter 3, measured transmittance value obtained
during bench calibrations(normalized_transmittance_filter3) - time(time)
- Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)
- Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
- base time(base_time)
- Tube Temperature(tube_temp)
- Data Logger Supply Voltage(logger_volt)
- Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
- Azimuth angle(azimuth_angle)
- Air mass(airmass)
- Elevation Angle(elevation_angle)
- Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
- Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
- Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
- Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
- Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
- Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)
- Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
- Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
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