Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Apogee Instruments SQ-500
Summary of Contents for Apogee Instruments SQ-500
-
Page 1: Owner's Manual
OWNER’S MANUAL QUANTUM SENSOR Model SQ-500 (including SS model, formerly gold) APOGEE INSTRUMENTS, INC. | 721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA TEL: (435) 792-4700 | FAX: (435) 787-8268 | WEB: APOGEEINSTRUMENTS.COM Copyright © 2020 Apogee Instruments, Inc. -
Page 2: Table Of Contents
TABLE OF CONTENTS Owner’s Manual ....................................1 Certificate of Compliance ................................. 3 Introduction ..................................... 4 Sensor Models ..................................5 Specifications ................................... 6 Deployment and Installation ..............................9 Cable Connectors ................................... 10 Operation and Measurement ..............................11 Maintenance and Recalibration ............................. 17 Troubleshooting and Customer Support .......................... -
Page 3: Certificate Of Compliance
RoHS 3 compliant using exemption 6c. Further note that Apogee Instruments does not specifically run any analysis on our raw materials or end products for the presence of these substances, but rely on the information provided to us by our material suppliers. -
Page 4: Introduction
SQ-500 series quantum sensors are designed for continuous PPFD measurement in indoor or outdoor environments. The SQ-500 model quantum sensor outputs a voltage that is directly proportional to PPFD. The voltage output by the sensor is directly proportional to radiation incident on a planar... -
Page 5: Sensor Models
SENSOR MODELS This manual covers the unamplified analog output quantum sensor, model SQ-500 (listed in bold below). Additional models are covered in their respective manuals. Model Signal SQ-500 0-40 mV SQ-512 0-2.5 V SQ-515 0-5 V SQ-520 SQ-521 SDI-12 SQ-522... -
Page 6: Specifications
(316), M8 connector located 25 cm from sensor head Calibration Traceability Apogee Instruments SQ-500 series quantum sensors are calibrated through side-by-side comparison to the mean of four transfer standard quantum sensors under a reference lamp. The reference quantum sensors are... - Page 7 Spectral Response Mean spectral response measurements of six replicate Apogee SQ-100 (original) and SQ-500 (full-spectrum) series quantum sensors. Spectral response measurements were made at 10 nm increments across a wavelength range of 300 to 800 nm with a monochromator and an attached electric light source.
- Page 8 Directional (cosine) response is defined as the measurement error at a specific angle of radiation incidence. Error for Apogee SQ-500 series quantum sensors is approximately ± 2 % and ± 5 % at solar zenith angles of 45° and 75°, respectively.
-
Page 9: Deployment And Installation
Mount the sensor to a solid surface with the nylon mounting screw provided. To accurately measure PPFD 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-110 mounting bracket is recommended. -
Page 10: Cable Connectors
CABLE CONNECTORS Apogee started offering in-line cable connectors on some bare-lead wire sensors in March 2018 to simplify the process of removing sensors from installations for recalibration (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 use in harsh environmental... -
Page 11: Operation And Measurement
30 cm from the sensor head then use the appropriate wiring configuration below. Wiring for SQ-500 Serial Numbers 1559 and above or with a cable connector White: Positive (signal from sensor) - Page 12 Sensor Calibration Apogee un-amplified full spectrum quantum sensors, model SQ-500, have a standard PPFD calibration factor of exactly: 100.0 µmol m per mV Multiply this calibration factor by the measured voltage to convert sensor output to PPFD in units of µmol m Calibration Factor (100 µmol m...
- Page 13 (LEDs) for the SQ-100 series sensors. Spectral errors for the SQ-500 series sensors are smaller than those for SQ-100 series sensors because the spectral response of SQ-500 series sensors is a closer match to the defined plant photosynthetic response.
- Page 14 PPFD), measured plant response to photons (green line, weighting factors used to calculate YPFD), and SQ-500 series quantum sensor response to photons (sensor spectral response). One potential definition of PAR is weighting photon flux density in units of mol m at each wavelength between 300 and 800 nm by measured relative quantum yield and summing the result.
- Page 15 Correlation between photosynthetic photon flux density (PPFD) and yield photon flux density (YPFD) for multiple different radiation sources. YPFD is approximately 90 % of PPFD. Measurements were made with a spectroradiometer (Apogee Instruments model PS-200) and weighting factors shown in the previous figure were used to calculate PPFD and YPFD.
- Page 16 Apogee SQ-500 series quantum sensors have an immersion effect correction factor of 1.32. This correction factor should be multiplied by PPFD measurements made underwater to yield accurate PPFD.
-
Page 17: Maintenance And Recalibration
3. Salt deposit accumulation from evaporation of sea spray or sprinkler irrigation water. Apogee Instruments upward-looking sensors have a domed diffuser and housing for improved self-cleaning from rainfall, but active cleaning may be necessary. Dust or organic deposits are best removed using water, or window cleaner, and a soft cloth or cotton swab. - Page 18 Homepage of the Clear Sky Calculator. Two calculators are available: one for quantum sensors (PPFD) and one for pyranometers (total shortwave radiation). Clear Sky Calculator for quantum sensors. Site data are input in blue cells in middle of page and an estimate of PPFD is returned on right-hand side of page.
-
Page 19: Troubleshooting And Customer Support
TROUBLESHOOTING AND CUSTOMER SUPPORT Independent Verification of Functionality Apogee SQ-500 series quantum sensors are self-powered devices and output an analog signal proportional to incident PPFD. A quick and easy check of sensor functionality can be determined using a voltmeter with millivolt resolution. -
Page 20: Return And Warranty Policy
RETURN AND WARRANTY POLICY RETURN POLICY Apogee Instruments will accept returns within 30 days of purchase as long as the product is in new condition (to be determined by Apogee). Returns are subject to a 10 % restocking fee. WARRANTY POLICY... - Page 21 5. Upon receipt, Apogee Instruments will determine the cause of failure. If the product is found to be defective in terms of operation to the published specifications due to a failure of product materials or craftsmanship, Apogee Instruments will repair or replace the items free of charge.
Need help?
Do you have a question about the SQ-500 and is the answer not in the manual?
Questions and answers