Apogee Instruments SQ-620 Owner's Manual

TEL: (435) 792-4700 | FAX: (435) 787-8268 | WEB: APOGEEINSTRUMENTS.COM Copyright © 2020 Apogee Instruments, Inc. OWNER’S MANUAL EXTENDED RANGE PFD SENSOR Models SQ-620 Rev: 28-Oct-2020 ...

Owner’s Manual ............................................................................................................................................................................... 1 Certificate of Compliance ......................................................................................................................... ...

EU Declaration of Conformity This declaration of conformity is issued under the sole responsibility of the manufacturer: Apogee Instruments, Inc. 721 W 1800 N Logan, Utah 84321 USA for the following product(s): Models: SQ-620 Type: Extended Range PFD Sensor The object of the declaration described above is in conformity with the rele ...

total radiation across a range of 400 to 700 nm. PAR is almost universally quantified as photosynthetic photon flux density (PPFD) in units of micromoles per square meter per second (µmol m-2 s-1, equal to microEinsteins per squa ...

are covered in their respective manuals. Model Signal SQ-620 Self-powered SQ-622 0-2.5 V SQ-624 4-20 mA SQ-625 0-5 V SQ-626 USB SQ-627 SDI-12 SQ-628 Modbus Sensor model number and serial number are located on the bottom of the sensor. If ...

transfer standard PFD sensors under a reference lamp. The transfer standard PFD sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST). SQ-6 ...

measurement error at a specific angle of radiation incidence. Error for Apogee SQ-600 series Extended Range PFD Sensor is approximately ± 2 % and ± 5 % at solar zenith angles of 45° and 75°, respectively. Mean spectral response measurements of six replicate Apogee SQ-600 ...

Mount the sensor to a solid surface with the nylon mounting screw provided. To accurately measure photon flux density incident on a horizontal surface, the sensor must be level. An Apogee Instruments model AL-100 leveling plate is recommended for this purpose. To facilitate mounting on a cross arm, an Apogee Instruments model AM- ...

process of removing sensors from weather stations for calibration (the entire cable does not have to be removed from the station and shipped with the sensor). The ruggedized M8 connectors are rated IP68, made of corrosion-resistant marine-grade stainless-steel, and designed for extended u ...

Connect the sensor to a measurement device (meter, datalogger, controller) capable of measuring and displaying or recording a millivolt signal (an input measurement range of approximately 0-200 mV is required to cover the photon flux density range the sensor is capable of measuring). In order to maximize the measurement resolution a ...