Product Manuals

You can access a PDF version of the owner's manuals for each of our products by selecting your model below. If you do not have a PDF reader, you can download one here.
Click here for Word versions of the manuals >
Click here for discontinued product manuals >

Aspirated Radiation Shield
Barometric Pressure Sensor
Chlorophyll Concentration Meter
Daily Light Integral and Photoperiod Meter
Humidity Probes
Infrared Radiometers
Radiation Frost Detector
NDVI and PRI Sensors
Net Radiometer
Oxygen Sensors
Photometric Sensors
Precipitation Gauge
Apogee Instruments Photometric Sensors
Thermopile Pyranometers
Silicon-cell Pyranometers
Full-Spectrum Quantum Sensors
Original X Quantum Sensor
Original Quantum Sensor - Discontinued June 1, 2021
ePAR Sensors
Quantum Light Pollution Sensors
Red - Far-Red Sensors
PAR-FAR Sensors
Field Spectroradiometers - Retired
Lab Spectroradiometers
Temperature Sensors
UV Sensors