Microtops II Ozone Monitor & Sunphotometer

Features

The Microtops II ozone monitor and sunphotometer is a 5 channel hand-held instrument for accurately measuring the ozone column (DU), ultra-violet irradiance, total atmospheric water vapour and aerosol optical thickness (AOT) at 1020nm.

The instrument includes calibrated internal temperature and pressure sensors and is supplied with a portable GPS and cable interface for automatic location setup and universal time recording. However, unlike the Facility's other MicroTops II sunphotometers this instrument has been configured with three ultraviolet detectors with narrow band precision at 305, 312 and 320nm and two near infrared detectors centred at 936nm and 1020nm.

Measured & Calculated Parameters

The following values can be read directly from the instrument or downloaded to a computer as a tab separated text file.

Example Applications

Specification

Filters
305.5 ±0.3 nm, 2.0 ±0.4 nm FWHM
312.5 ±0.3 nm, 2.0 ±0.4 nm FWHM
320.0 ±0.3 nm, 2.0 ±0.4 nm FWHM
936 ±1.5 nm, 10 ±1.5 nm FWHM
1020 ±1.5 nm, 10 ±1.5 nm FWHM
Resolution
0.01W/m²
Dynamic Range
>300,000
Field of View
2.5 degrees
Precision
1-2%
Nonlinearity
max 0.002% FS
Computer & GPS interface
RS-232C
Power source
4 x AA Alkaline batteries
Weight
21 oz (600 grams)
Size
10 x 20 x 4.3cm
Operating Environment
0 to 50°C, no precipitation

Resources