The MU-250 has a hand-held meter, attached via cable, that displays and stores sensor measurements. The sensor detects UV radiation from 300 to 400 nm. Typical applications include monitoring the filtering ability and stability of various materials, measuring UV-A radiation in outdoor environments and laboratory use, and monitoring UV radiation in horticultural operations environments.
The meter has a sample and log mode, and will record an average daily value. Sample mode will record up to 99 manual measurements. Log mode will power the meter on/off to make a measurement every 30 seconds. Every 30 minutes the meter will average the sixty 30 second measurements and record the averaged value to memory. The meter can store up to 99 averages, once full it will start to overwrite the oldest measurement with new ones. An average daily value will be recorded from the 48 averaged measurements (making a 24 hr period). Sample and log measurements can be reviewed on the LCD display or by downloading the data to a computer, however, the average daily value can only be viewed by downloading the data to a computer. Downloading data to a computer requires the AC-100 communication cable (a standard USB cable will not work) and ApogeeAMS software. Comes with a free protective carrying case.
Calibration Uncertainty: ± 10 %
Measurement Repeatability: Less than 0.5 %
Non-stability (Long-term Drift): Less than 2 % per year
Non-linearity: Less than 1 %
Response Time: Less than 1 ms
Field of View: 180°
Spectral Range: 300 nm to 400 nm
Directional (Cosine) Response: ± 2 % at 45°, ± 5 % at 75° zenith angle
Maximum Range: 104.9 W per m²
Temperature Response: Less than 0.1 % per C
Operating Environment: 0 to 50 C; less than 90 % non-condensing relative humidity up to 30 C; less than 70 % noncondensing relative humidity from 30 to 50 C
Meter Dimensions: 126 mm length; 70 mm width; 24 mm height
Sensor Dimensions: 30.5 mm diameter, 37 mm height
Mass: 180 g
Cable: 2 m of two conductor, shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions)
Warranty: 4 years against defects in materials and workmanship
