The Irradian portable digital quantum radiometer model Q201 is a versatile, direct reading instrument designed specifically for measuring photosynthetic active radiation (PAR) over the spectral range 400 to 700nm, in units of µmol / m² / s (or alternatively in units of micro Einstein / m² / s ).

The operating range of 0 to 1999.9 µmol / m² / s makes the Q201 suitable for sunlight and controlled environment chamber measurements.

The radiometer comprises of a handheld display unit with battery, detector and integral amplifier, with interconnecting cable. The meter also includes a calibration certificate and carrying case for protection and transportation.

The Q201 PAR radiometer offers lower cost combined with an Irradian high accuracy PAR response, cosine corrected detector.

The Q201 may be used in applications such as Agriculture, Horticulture, Plant Growth studies, Biology and Liminology (with under water detectors).

A handbook and brochure for this meter are available here.

Other measurement ranges are also available, please contact Irradian for details.

Q201 Brochure