Features Integral Sensor Compact Durable Accurate LCD readout Applications Red Light Intensity Measurement For LED, Fluorescent, and HP (HID) Lamps Collagen Stimulation Irradiance Wound Healing Irradiance Red Lamp Aging Tests
The red band of the photosynthetic radiation action spectrum (PAR).
The light can be measured directly or the instrument can measure the light transmitted through a leaf, thereby providing a means to estimate the leaf's photosynthetic/phototropic pigment concentration.
Response at 632 - 737 nm
More than 75%
Bandwidth at 40% Power
3.5 Digit LCD
0.4 inch high
5% TO 90% RH
4.2L x 2.4W x 0.9D (inches)
4.5 OZ. (incl. batt.)
9-Volt DC Battery
Schott Glass Cap
Virgin PTFE .005"
GaAsP Photodiode with Schott Filter
Sensor/Detector GaAsP Photodiode packaged in hermetically sealed glass window cap. Schott color glass filter to narrow bandwidth as shown on spectral response graph.
Operation Press and hold push-button switch on face of unit. Aim sensor window in top panel of meter directly at red light source. Note reading on LCD and record if desired.
Battery operation voltage is 9V down to 6.5V. Below 6.5V the LCD numbers will begin to dim, indicating the need for battery replacement. Under "typical" service load, the battery should last about 2 years.