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- Page 1 OWNER’S MANUAL EPAR METER Models MQ-610 Rev: 2-Feb-2022 APOGEE INSTRUMENTS, INC. | 721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA TEL: (435) 792-4700 | FAX: (435) 787-8268 | WEB: APOGEEINSTRUMENTS.COM Copyright © 2022 Apogee Instruments, Inc.
- Page 2 TABLE OF CONTENTS Owner’s Manual ....................................1 Certificate of Compliance ................................. 3 Introduction ..................................... 4 Sensor Models ..................................6 Specifications ................................... 7 Deployment and Installation ..............................10 Battery Installation and Replacement ............................ 11 Operation and Measurement ..............................12 Apogee AMS Software ................................15 Maintenance and Recalibration .............................
- Page 3 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 we rely on the information provided to us by our material suppliers.
- Page 4 383-757 nm ± 5 nm, which allows it to measure photons from Far-red. Apogee Instruments MQ-610 meters consist of a handheld meter and a dedicated sensor that is connected by cable to an anodized aluminum housing. SQ-600 series ePAR sensors consist of a cast acrylic diffuser (filter), photodiode, signal processing circuitry mounted in an anodized aluminum housing, and are potted solid with no internal air space.
- Page 5 Murakami et al. 2018. A Mathematical Model of Photosynthetic Electron Transport in Response to the Light Spectrum Based on Excitation Energy Distributed to Photosystems. Plant Cell Physiology. 59(8): 1643–1651. Zhen and Van Iersel. 2017. Far-red light is needed for efficient photochemistry and photosynthesis. Journal of Plant Physiology.
- Page 6 Apogee MQ series ePAR meters covered in this manual are self-contained and come complete with handheld meter and sensor. A sensor’s model number and serial number are located on a label on the backside of the handheld meter.
- Page 7 MQ-610 Calibration Uncertainty ± 5 % (see Calibration Traceability below) Measurement Range 0 to 4000 µmol m Measurement Less than 0.5 % Repeatability Long-term Drift Less than 2 % per year (Non-stability) Non-linearity Less than 1 % (up to 4000 µmol m...
- Page 8 Spectral Response Mean spectral response measurements of four replicate Apogee MQ-600 series ePAR Sensors. Incremental spectral response measurements were made at 10 nm increments across a wavelength range of 370 to 800 nm in a monochromator with an attached electric light source. Measured spectral data from each quantum sensor were refined and normalized by comparing measured spectral response of the...
- Page 9 Cosine Response Directional, or cosine, response is defined as the measurement error at a specific angle of radiation incidence. Error for Apogee MQ-600 series ePAR Sensor is approximately ± 2 % and ± 5 % at solar zenith angles of 45° and 75°, respectively. Mean directional (cosine) response of seven Apogee series quantum sensors.
- Page 10 MQ model comes with a different option for mounting the sensor to a horizontal plane. The AL-100 leveling plate is recommended for use with the MQ-610 (AL-100 leveling plate pictured). To facilitate mounting to a cross arm, the AL-120 mounting bracket is recommended.
- Page 11 Use a Phillips-head screwdriver to remove the screw from the battery cover. Remove the battery cover by slightly lifting and sliding the outer edge of the cover away from the meter. To power the meter, slide the included battery (CR2320) into the battery holder, after removing the battery door from the meter’s back panel.
- Page 12 MQ series ePAR meters are designed with a user-friendly interface allowing quick and easy measurements. Press the power button to activate the LCD display. After two minutes of non-activity the meter will revert to sleep mode and the display will shut off to conserve battery life. Press the mode button to access the main menu, where manual or automatic logging are selected, and where the meter can be reset.
- Page 13 Review/Download Data: Each of the logged measurements in either SMPL or LOG mode can be reviewed on the LCD display by pressing the up/down buttons. To exit and return to the real-time readings, press the sample button. Note that the integrated daily total values are not accessible through the LCD and can only be viewed by downloading to a computer.
- Page 14 Immersion Effect Correction Factor When a radiation sensor is submerged in water, more of the incident radiation is backscattered out of the diffuser than when the sensor is in air (Smith, 1969; Tyler and Smith, 1970). This phenomenon is caused by the difference in the refractive index for air (1.00) and water (1.33) and is called the immersion effect.
- Page 15 Downloading data to a computer requires the AC-100 communication cable and the free ApogeeAMS software. The meter outputs data using the UART protocol and requires the AC-100 to convert from UART to USB, so standard USB cables will not work. The most recent version of ApogeeAMS software can be downloaded at http://www.apogeeinstruments.com/downloads/.
- Page 16 “Daily Totals” shows all the saved Daily Light Integral (DLI) totals per day. Click “30 Min Avg” to see the meter’s 99, 30-minute averages. To analyze the data, click on “File” and “Save As” to save the data as a .csv file. Or you can highlight the numbers, copy, and paste them into a blank Excel spreadsheet.
- Page 17 Moisture or debris on the diffuser is a common cause of low readings. The sensor has a domed diffuser and housing for improved self-cleaning from rainfall, but materials can accumulate on the diffuser (e.g., dust during periods of low rainfall, salt deposits from evaporation of sea spray or sprinkler irrigation water) and partially block the optical path.
- Page 18 Verify Functionality Pressing the power button should activate the LCD and provide a real-time PFD reading. Direct the sensor head toward a light source and verify the PFD reading responds. Increase and decrease the distance from the sensor to the light source to verify that the reading changes proportionally (decreasing PFD with increasing distance and increasing PFD with decreasing distance).
- Page 19 Error Codes and Fixes Error codes will appear in place of the real-time reading on the LCD display and will continue to flash until the problem is corrected. Contact Apogee if the following fixes do not rectify the problem. Err 1: battery voltage out of range. Fix: replace CR2320 battery and perform master reset. Err 2: sensor voltage out of range.
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Page 20: Return 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 What is Covered All products manufactured by Apogee Instruments are warranted to be free from defects in materials and craftsmanship for a period of four (4) years from the date of shipment from our factory. - Page 21 84321, USA 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.
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