MU-250 Handheld Meter with Separate UV-A Sensor (300 to 400 nm)


Apogee Instruments


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.

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The Sensor measures: UV Ultra Violet Radiation
Cable Length: 2m
Sensors Accessories: Mounting Shelf

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.

The photo shows the optional leveling base AL-210 (not included)

Apogee UV sensors incorporate a photodiode that measures the combined UVA and UVB radiation.

The MU-250 has a separate sensor, while the hand meter displays and stores measurements.

The meter offers the configuration to measure UV in μmol m-2 s-1 or Watts m-2.

The sensor housing design features a fully dome-shaped head that makes the sensor completely weatherproof and self-cleaning.

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

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