APOGEE INSTRUMENTS, INC. |
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Copyright © 2016 Apogee Instruments, Inc.
OWNER’S MANUAL
UNDERWATER QUANTUM METER
Model MQ-210
Page 1: ... INSTRUMENTS INC 721 WEST 1800 NORTH LOGAN UTAH 84321 USA TEL 435 792 4700 FAX 435 787 8268 WEB APOGEEINSTRUMENTS COM Copyright 2016 Apogee Instruments Inc OWNER S MANUAL UNDERWATER QUANTUM METER Model MQ 210 ...
Page 2: ... Certificate of Compliance 3 Introduction 4 Sensor Models 5 Specifications 6 Deployment and Installation 9 Operation and Measurement 10 Maintenance and Recalibration 14 Troubleshooting and Customer Support 15 Return and Warranty Policy 17 ...
Page 3: ... laboratory use EMC requirements EN 50581 2012 Technical documentation for the assessment of electrical and electronic products with respect to the restriction of hazardous substances Please be advised that based on the information available to us from our raw material suppliers the products manufactured by us do not contain as intentional additives any of the restricted materials including cadmiu...
Page 4: ...hat was calibrated in air is used to make underwater measurements the sensor reads low This phenomenon is called the immersion effect and happens because the refractive index of water 1 33 is greater than air 1 00 The higher refractive index of water causes more light to be backscattered or reflected out of the sensor in water than in air Smith 1969 Tyler and Smith 1970 As more light is reflected ...
Page 5: ...ogee MQ series quantum meters covered in this manual are self contained and come complete with handheld meter and sensor Sensor model number and serial number are located on a label on the backside of the handheld meter ...
Page 6: ...libration Traceability below Measurement Repeatability Less than 1 Long term Drift Non stability Less than 2 per year Non linearity Less than 1 up to 3000 µmol m 2 s 1 Response Time Less than 1 ms Field of View 180º Spectral Range 410 to 655 nm wavelengths where response is greater than 50 of maximum see Spectral Response below Directional Cosine Response 5 at 75º zenith angle see Cosine Response ...
Page 7: ...sors were compared to the spectroradiometer The spectroradiometer was mounted external to the temperature control chamber and remained at room temperature during the experiment Mean spectral response of six SQ series quantum sensors error bars represent two standard deviations above and below mean compared to PPFD weighting function Spectral response measurements were made at 10 nm increments acro...
Page 8: ...our reference thermopile pyranometers with solar zenith angle dependent factors applied to convert total shortwave radiation to PPFD Blue points represent the AM response and red points represent the PM response Directional or cosine response is defined as the measurement error at a specific angle of radiation incidence Error for Apogee SQ series quantum sensors is approximately 2 and 5 at solar z...
Page 9: ...ture To accurately measure PFFD incident on a horizontal surface the sensor must be level The AL 100 accessory leveling plate is recommended for use with the MQ 210 to ensure the sensor is level when attached to a cross arm The bubble level in the plate makes leveling simple and accurate The AM 320 Saltwater Submersible Sensor Wand accessory incorporates a mounting fixture at the end of a 40 inch ...
Page 10: ... and scroll through the logged measurements on the LCD display Press the down button to make selections in the main menu This button is also used to view and scroll through the logged measurements on the LCD display Logging To choose between manual or automatic logging push the mode button twice and use the up down buttons to make the appropriate selection SMPL or LOG Once the desired mode is blin...
Page 11: ...nd will read approximately 12 low in sunlight In addition to PPFD measurements Apogee MQ series quantum meters can also be used to measure yield photon flux density YPF photon flux weighted according to the plant photosynthetic action spectrum McCree 1972 and summed YPFD is also expressed in units of µmol m 2 s 1 and is similar to PPFD but is typically more closely correlated to photosynthesis tha...
Page 12: ... Pressure Sodium 0 8 7 2 Blue LED 448 nm peak 20 nm full width half maximum 12 7 8 0 Green LED 524 nm peak 30 nm full width half maximum 8 0 26 2 Red LED 635 nm peak 20 nm full width half maximum 4 8 6 2 Red Blue LED Mixture 85 Red 15 Blue 2 4 4 4 Red Green Blue LED Mixture 72 Red 16 Green 12 Blue 3 4 0 2 Cool White Fluorescent LED 4 6 0 6 Neutral White Fluorescent LED 6 7 5 2 Warm White Fluoresce...
Page 13: ...compare light in different environments The MQ 210 sensor has an immersion effect correction factor of 1 08 The immersion effect correction factor is already accounted for in the MQ 210 meter firmware so there is no need to apply the correction factor to your measurements If you wish to use your meter to make measurements in air simply divide the measured number by the immersion effect 1 08 When m...
Page 14: ...tion from clouds causes incoming radiation to increase above the value predicted by the clear sky calculator Measured values of PPFD can exceed values predicted by the Clear Sky Calculator due to reflection from the sides and edges of clouds This reflection increases the incoming radiation The influence of high clouds typically shows up as spikes above clear sky values not a constant offset greate...
Page 15: ...icator please double check that the voltage of your new batter is above 2 8 V this is the threshold for the indicator to turn on Master Reset If a meter ever becomes non responsive or experiences anomalies such as a low battery indicator even after replacing the old battery a master reset can be performed that may correct the problem Note that a master reset will erase all logged measurements from...
Page 16: ...ertain applications It is possible to convert the PPFD value from a quantum sensor to other units but it requires spectral output of the radiation source of interest Conversion factors for common radiation sources can be found on the Unit Conversions page in the Support Center on the Apogee website http www apogeeinstruments com unit conversions A spreadsheet to convert PPFD to energy flux density...
Page 17: ...Improper installation or abuse 2 Operation of the instrument outside of its specified operating range 3 Natural occurrences such as lightning fire etc 4 Unauthorized modification 5 Improper or unauthorized repair Please note that nominal accuracy drift is normal over time Routine recalibration of sensors meters is considered part of proper maintenance and is not covered under warranty Who is Cover...
Page 18: ...nsible for any direct indirect incidental or consequential damages including but not limited to loss of income loss of revenue loss of profit loss of wages loss of time loss of sales accruement of debts or expenses injury to personal property or injury to any person or any other type of damage or loss This limited warranty and any disputes arising out of or in connection with this limited warranty...
