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There are several methods to measure how much light is intercepted by a canopy in order to determine if water loss is from evaporation or transpiration. There’s the hard & expensive way and then there’s the smart way: the CTR-1 . “Virtual” make Ceptometer offers convenient and flexible tools for measuring and analyzing incident and transmitted Photo synthetically Active Radiation (PAR) in Crop and Forest canopies. This is a a non-destructive method to easily and accurately measure Leaf Area Index (LAI). It provides vital information about the penetration of PAR into crops and forest, and is essential in work such as comparative crop studies, for separating out the effects of cultivars and treatment. It is particularly well suited to low regular canopies (as found in many agricultural crops). It can be used in most light conditions. The first sensor probe has an array of 10 PAR sensors embedded in a 1m long probe, and is connected with Handheld Terminal. The second sensor probe also has a 1 PAR sensor embedded in a 0.5m long probe, and is connected with handheld Data logger. One PAR Sensor is also connected with data logger for reference incoming radiation. When a reading is taken, all sensors are scanned and the measurements transmitted to the data logger. The average light level along the probe is calculated. Further you can download data from data logger to a computer (USB Port) with the help of "Virtualware" (PC Interface Software).
this ccf sensor is for measurement of the cloud cover factor. This innovation of dr. Sten lofveng makes it possible to get automatic observations of the cloud cover factor, ccf 24 hours a day i.e. The fraction of the sky that is covered with clouds. It consists of a day time unit that observes the sky in 4 directions in parts of the solar spectrum, a night time unit that observes the sky in the thermal infra-red spectrum. A microcomputer evaluates the signals and controls the output.
Sanitization Chamber / Tunnel “Virtual” make Sanitization Chamber / Tunnel is the state of art fully automatic sanitization solution available in the market.
The AL-130 Albedometer Bracket is designed to accommodate the SP-510 upward-looking thermopile pyranometer and SP-610 downward-looking thermopile pyranometer to create an albedometer. It can also be used to mount other upward and downward facing sensors, such as our pyrgeometers. The AL-130 bracket is designed to be mounted to a mast or pipe with a 1.3" - 2.1" outer diameter. It is made of stainless steel and has an integrated bubble level to make leveling simple and accurate for proper sensor installation .
The AM-250 Angle Mounting Bracket is designed to mount Apogee Instruments infrared radiometers to a mast or pipe with an outer diameter of 1.3" - 2.1". The stainless steel bracket is designed to orient the infrared radiometer at varying angles to satisfy all applications. Please be aware that the infrared radiometers were redesigned with a new housing in late 2022. The AM-250 is only compatible with the new IR sensor housing. Please see the below picture for reference on whether your sensor uses the old or new housing
Simple and Accurate Mounting The AL-120 solar mounting bracket is designed to mount Apogee Instruments’ solar sensors to a mast or pipe with an outer diameter of 1.3” - 2.1”. The bracket has an integrated bubble-level to make leveling simple and accurate for proper sensor installation
Simple and Accurate Mounting The AM-220 angle infrared radiometer mounting bracket is designed to mount an Apogee Instruments’ infrared radiometer (older solar shield design) or radiation frost detector to a mast or pipe with an outer diameter of 1.3” to 2.1”. The bracket is designed to orient the sensors at varying angles to satisfy all applications
Simple and Accurate Mounting The AS-013 angled field spec mounting bracket facilitates angled mounting of Apogee Instruments’ field spectroradiometers model SS-110 and SS-120 to a mast or pipe. The bracket is designed to orient the spec at varying angles to satisfy all applications.
TYPICAL APPLICATIONS • Incoming and reflected PPFD over and under plant canopies in greenhouses, in fields, and in growth chambers • Aquatic environments including salt water aquariums and freshwater lakes and streams MULTIPLE OUTPUT OPTIONS • Attached hand-held meter • Separate sensor • Line quantum meter- 3 sensors • Line quantum meter- 6 sensors • Line quantum meter- 10 sensors LINE QUANTUM SENSOR OPTIONS Sensors are available with multiple detectors mounted along the length of a rugged anodized aluminum bar, which provide spatially averaged PPFD measurements along the length of the bar. ACCURATE, STABLE MEASUREMENTS Cosine-corrected with directional errors less than ± 5 % at a solar zenith angle of 75°. Long-term non-stability less than 2 % per year. UNIQUE DESIGN Cost-effective, original quantum sensors work well for broadband radiation sources. The patented, dome-shaped aluminum head is cosine-corrected, self-cleaning, and fully-potted for a waterproof design. CALIBRATION TRACEABILITY Apogee SQ sensors are calibrated through side-byside comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).
Apogee Instruments PAR meters are the tool of choice for cost-effective, scientific-grade measurement of underwater PAR levels. Accurate tank PAR mapping, daily light integral measurements, and the adjusting of photosynthetic radiation levels to mimic nature are all critical to specimen health. Apogee offers two different underwater calibrated meters at two different price points. The basic MQ-210 features our original detector that is excellent for broadband light sources. The research-grade MQ-510 features an improved detector excellent for all light sources, including LEDs, and matches LI-COR and Kipp & Zonen PAR sensors in accuracy while costing much less.
High Accuracy and Stability Accurate within ± 1.5 kPa across a pressure range of 15 to 115 kPa (4.43 to 34.96 in Hg). Long-term non-stability has been measured continuously indoors and in natural conditions (with sensors mounted inside a datalogger enclosure) for multiple sensors and is less than 0.5 % per year. Temperature effects on signal are less than 1 % across a wide temperature range (-20 to 50 C). Low Power, Large Signal Pressure sensor power requirement is approximately 35 mW (7 mA current draw at 5 V DC). Voltage output ranges from 0 to 5 V DC for a pressure range of 15 to 115 kPa. Small Size Sensor is small and lightweight enabling easy deployment within a datalogger enclosure, protecting the sensor from the elements.
High Accuracy and Stability Accurate within ± 1.5 kPa across a pressure range of 15 to 115 kPa (4.43 to 34.96 in Hg). Long-term non-stability has been measured continuously indoors and in natural conditions (with sensors mounted inside a datalogger enclosure) for multiple sensors and is less than 0.1 % per year. Temperature effects on signal are less than 0.1 % per C across a wide temperature range (-40 to 100 C). Low Power, Large Signal Pressure sensor power requirement is approximately: Typical: 30 mW (6 mA, 5 V) Maximum: 50 mW (10 mA, 5 V) Voltage output ranges from 4.75 to 5.25 V DC for a pressure range of 15 to 115 kPa. Small Size Sensor is small and lightweight, enabling easy deployment within a datalogger enclosure, which protects the sensor from the elements.
The new Apogee ePAR (extended photosynthetically active radiation) sensor was created to measure the wider 400-750 nm radiation range that cutting-edge research is showing to be photosynthetically active, beyond the traditional 400-700 nm range defined by McCree. Most of this transformative work to refine and define the ePAR range is being conducted by Dr. Shuyang Zhen and Dr. Bruce Bugbee at Utah State University
DESIGNED FOR UNDERWATER USE Sensor heads are fully epoxy potted to be completely waterproof. Diffuser is cosine corrected for accurate 2-pi PAR-mapping. Sensor readings are adjusted in firmware to correct for the immersion effect. ACCURATE, STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year. DATALOGGING CAPABILITIES The meter records up to 99 measurements in logging mode, making automatic measurements every 30 seconds and recording 30-minute averages. Data can be downloaded to calculate DLI. NIST TRACEABLE CALIBRATION Apogee Quantum sensors are calibrated by comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated regularly to a halogen lamp traceable to the National Institute of Standards and Technology. Calibration certificates are available upon request.
TYPICAL APPLICATIONS •Incoming and reflected PPFD over and under plant canopies in greenhouses, in fields, and in growth chambers •Aquatic environments including salt water aquariums and freshwater lakes and streams UNIQUE DESIGN Measure photosynthetically active radiation with a research grade, full-spectral response sensor. Offers a self-cleaning, cosine-corrected head to minimize errors and is fully-potted for a waterproof design. ACCURATE, STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year. CALIBRATION TRACEABILITY Apogee SQ-500 sensors are calibrated through side-by-side comparison to the mean of four transfer standard sensors under T5 cool white fluorescent lamps. The transfer standard sensors are calibrated through side-by-side comparison to the mean of at least four quantum sensors under T5 cool white fluorescent lamps traceable to the National Institute of Standards and Technology (NIST). SPECTRAL ERRORS OF COMMERCIAL QUANTUM SENSORS Spectral errors are theoretical errors calculated from sensor spectral responses and spectral output of radiation sources. Only spectral errors are listed in the table. Calibration, cosine, and temperature error can also contribute to measurement error
TYPICAL APPLICATIONS •Incoming and reflected PPFD over and under plant canopies in greenhouses, in fields, and in growth chambers •Aquatic environments including salt water aquariums and freshwater lakes and streams UNIQUE DESIGN Measure photosynthetically active radiation with a research grade, full-spectral response sensor. Offers a self-cleaning, cosine-corrected head to minimize errors and is fully-potted for a waterproof design. ACCURATE, STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year. CALIBRATION TRACEABILITY Apogee SQ-500 sensors are calibrated through side-by-side comparison to the mean of four transfer standard sensors under T5 cool white fluorescent lamps. The transfer standard sensors are calibrated through side-by-side comparison to the mean of at least four quantum sensors under T5 cool white fluorescent lamps traceable to the National Institute of Standards and Technology (NIST). SPECTRAL ERRORS OF COMMERCIAL QUANTUM SENSORS Spectral errors are theoretical errors calculated from sensor spectral responses and spectral output of radiation sources. Only spectral errors are listed in the table. Calibration, cosine, and temperature error can also contribute to measurement error.
DESIGNED FOR UNDERWATER USE Sensor heads are fully epoxy potted to be completely waterproof. Diffuser is cosine corrected for accurate 2-pi PAR-mapping. Sensor readings are adjusted in firmware to correct for the immersion effect. ACCURATE, STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year. DATALOGGING CAPABILITIES The meter records up to 99 measurements in logging mode, making automatic measurements every 30 seconds and recording 30-minute averages. Data can be downloaded to calculate DLI. NIST TRACEABLE CALIBRATION Apogee Quantum sensors are calibrated by comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated regularly to a halogen lamp traceable to the National Institute of Standards and Technology. Calibration certificates are available upon request.
ACCURATE, STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year. UNIQUE DESIGN Measure photosynthetically active radiation with a research grade, full-spectral response sensor. Offers a self-cleaning, cosine-corrected head to minimize errors and is fully-potted for a waterproof design. NO DATALOGGER REQUIRED Sensor can be connected to a desktop, laptop, or tablet computer via a USB 2.0 type A plug. The ApogeeConnect software gives the user control of data logging and calibration settings, provides real-time output display and graph of PPFD measurements, and allows the data set to be saved as a csv file for analysis. Sensor has internal data storage ability to hold up to 10, 000 measurements. CALIBRATION TRACEABILITY Apogee SQ-500 sensors are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST). SPECTRAL ERRORS OF COMMERCIAL QUANTUM SENSORS Spectral errors are theoretical errors calculated from sensor spectral responses and spectral output of radiation sources. Only spectral errors are listed in the table. Calibration, cosine, and temperature error can also contribute to measurement error.
TYPICAL APPLICATIONS •Plant water status estimation •Road surface temperature measurementfor determination of icing conditions •Terrestrial surface (soil, vegetation, water, snow) temperature measurement in energy balance studies OUTPUT OPTIONS •Analog response •SDI-12 •Hand-held meter Features Dimensions Apogee Instruments’ MI series infrared temperature meters are calibrated to the temperature of a custom blackbody cone held at multiple fixed temperatures over a range of radiometer (detector/sensor body) temperatures. The temperature of the blackbody cone is measured with replicate precision thermistors thermally bonded to the cone surface. The precision thermistors are calibrated for absolute temperature measurement against a platinum resistance thermometer (PRT) in a constant temperature bath. The PRT calibration is directly traceable to the National Institute of Standards and Technology (NIST). Calibration Traceability HIGH ACCURACY Calibrated to a custom black-body cone with a measurement uncertainty of ± 0.2 C from -30 to 65 C when the sensor temperature is within 20 C of the target. Radiometers are only sensitive to wavelengths from 8 to 14 μm to minimize the influence of water vapor and CO₂ on the measurement. RUGGED HOUSING Anodized aluminum body with fully-potted electronics. The outer radiation shield reduces thermal fluctuations.
TYPICAL APPLICATIONS • Plant water status estimation • Road surface temperature measurement for determination of icing conditions • Terrestrial surface (soil, vegetation, water, snow) temperature measurement in energy balance studies OUTPUT OPTIONS Research-Grade sensors are available in analog and digital outputs including unamplified voltage outputs, SDI-12, and Modbus communication protocols. Research-Grade sensors are also available attached to a hand-held meter with digital readout. Commercial- Grade models come in analog (SIL-111) and SDI-12 (SIL-411, SIL-4H1) outputs. RUGGED HOUSING Anodized aluminum body with fully-potted electronics. Research-Grade radiation shields are made from powder-coated aluminum with a polished interior for lower emissivity. Commerical-Grade radiation shields are made from rugged, polished, UV-resistant ASA plastic.
Apogee line quantum sensors measure a spatial average of photosynthetically active radiation. The MQ-301X has a separate sensor bar with 10 sensors, while the handheld meter displays and stores measurements. The sensor housing design features an integrated bubble level and is fully potted, making the sensor water- and weatherproof. TYPICAL APPLICATIONS •Incoming and reflected PPFD over and under plant canopies in greenhouses, in fields, and in growth chambers UNIQUE DESIGN Cost-effective, original quantum X sensors work well for sunlight and some broadband radiation sources. The sensor housing design features an integrated bubble level and is fully potted, making the sensor water- and weatherproof. ACCURATE, STABLE MEASUREMENTS Cosine-corrected with directional errors less than ± 5 % at a solar zenith angle of 75°. Long-term non-stability less than 2 % per year. CALIBRATION TRACEABILITY Apogee SQ X sensors are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).
TYPICAL APPLICATIONS •Incoming and reflected PPFD over and under plant canopies in greenhouses, in fields, and in growth chambers •Aquatic environments including salt water aquariums and freshwater lakes and streams UNIQUE DESIGN Cost-effective, original quantum sensors work well for broadband radiation sources. The patented, dome-shaped aluminum head is cosine-corrected, self-cleaning, and fully-potted for a waterproof design. ACCURATE, STABLE MEASUREMENTS Cosine-corrected with directional errors less than ± 5 % at a solar zenith angle of 75°. Long-term non-stability less than 2 % per year. CALIBRATION TRACEABILITY Apogee SQ sensors are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).
DESIGNED FOR UNDERWATER USE Sensor heads are fully epoxy potted to be completely waterproof. Diffuser is cosine corrected for accurate 2-pi PAR-mapping. Sensor readings are adjusted in firmware to correct for the immersion effect. ACCURATE, STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year. DATALOGGING CAPABILITIES The meter records up to 99 measurements in logging mode, making automatic measurements every 30 seconds and recording 30-minute averages. Data can be downloaded to calculate DLI. NIST TRACEABLE CALIBRATION Apogee Quantum sensors are calibrated by comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated regularly to a halogen lamp traceable to the National Institute of Standards and Technology. Calibration certificates are available upon request.
TYPICAL APPLICATIONS •Measurement of O₂ in laboratory experiments orof O₂ gradients in soil/underground •Monitoring gaseous O₂ in indoor environments for climate control, in compost piles, and in mine tailings •Monitoring redox potential in soils •Determination of respiration rates through measurement of O₂ consumption in sealed chambers OUTPUT OPTIONS •Analog V DC •SDI-12 •or hand-held meter HEATED DETECTOR The gas permeable membrane inlet can be heated to prevent water vapor from condensing and blocking the diffusion path when sensors are used in soil or compost. UNIQUE DESIGN Sensors have an internal thermistor fully sealed for temperature monitoring. Sensors are housed in a polypropylene body for long-term use underground. Two head options include a diffusion head for field use and a flow-through head for laboratory use. SIMPLE CALIBRATION Voltage output is linearly proportional to absolute amount of oxygen. Calibration is accomplished by measuring the voltage under ambient conditions (atmosphere is 20.95 % O₂) and deriving a linear calibration factor. A zero offset can be obtained with N₂ gas (recommended for measurements below 10 % O₂).
TYPICAL APPLICATIONS •Measurement of O₂ in laboratory experiments or of O₂ gradients in soil/underground •Monitoring gaseous O₂ in indoor environments for climate control, in compost piles, and in mine tailings •Monitoring redox potential in soils •Determination of respiration rates through measurement of O₂ consumption in sealed chambers OUTPUT OPTIONS •Analog V DC •SDI-12 •or hand-held meter HEATED DETECTOR The gas permeable membrane inlet can be heated to prevent water vapor from condensing and blocking the diffusion path. When sensors are used in soil or compost. Features UNIQUE DESIGN Sensors have an internal thermistor fully sealed for temperature monitoring. Sensors are housed in a polypropylene body for long-term use underground. Two head options include a diffusion head for field use and a flow-through head for laboratory use. SIMPLE CALIBRATION Voltage output is linearly proportional to absolute amount of oxygen. Calibration is accomplished by measuring the voltage under ambient conditions (atmosphere is 20.95 % O₂) and deriving a linear calibration factor. A zero offset can be obtained with N₂ gas (recommended for measurements below 10 % O₂).
Apogee offers silicon-cell and thermopile pyranometers that are both rated ISO 9060:2018 Class C (fast response). Our popular silicon-cell models are less expensive and have a faster response time, but can have errors under cloudy conditions. Our thermopile pyranometers feature a unique, cost-effective design with an inexpensive diffuser and blackbody thermopile detector that provides a broader and more uniform spectral response for better performance in all atmospheric conditions. STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate pyranometers in accelerated aging tests and field conditions is less than 2 % per year. UNIQUE DESIGN An accurate, cosine-corrected patented design sheds water and dirt for a self-cleaning performance. A heated option is available with a 0.2 W heater to minimize errors caused by dew, frost, or snow. TYPICAL APPLICATIONS • Solar panel arrays • Agricultural, ecological, and hydrological weather networks CALIBRATION TRACEABILITY Apogee SP series pyranometers are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated under sunlight in Logan, UT traceable to the World Radiometric Reference (WRR) in Davos, Switzerland.
Apogee SP series pyranometers are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated under sunlight in Logan, UT traceable to the World Radiometric Reference (WRR) in Davos, Switzerland TYPICAL APPLICATIONS •Solar panel arrays •Agricultural, ecological, and hydrological weather networks STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate pyranometers in accelerated aging tests and field conditions is less than 2 % per year. UNIQUE DESIGN A patented dome-shaped sensor head keeps the sensor clean and minimizes errors by shedding water. Sensors are housed in a rugged anodized aluminum body and electronics are fully-potted.
Wide Range Sensitive from 250 to 400 nm, spanning the solar UV and range of electric lamps. Measurement Units Calibration factors for photon flux density units [μmol m⁻² s⁻¹] and energy flux density [W m⁻²] are provided with each sensor allowing for rapid unit conversions. Rugged, Self-cleaning Housing The patented dome-shaped sensor head facilitates runoff of dew and rain, helping to keep the detector clean and minimizing errors caused by dust blocking the radiation path. Sensors are housed in a rugged anodized aluminum body and electronics are fully-potted. Typical Applications Applications include: UV radiation measurement in outdoor environments (sensor is not recommended for longterm continuous outdoor deployment), laboratory use with artificial light sources (e.g., germicidal lamps), and monitoring the filtering ability and stability of various materials.
RUGGED, SELF-CLEANING HOUSING Sensor features an anodized aluminum body with fully-potted electronics. The dome-shaped sensor head minimizes errors by shedding dust and water for a self-cleaning performance. CALIBRATION TRACEABILITY Apogee UV-A series sensors are calibrated through side-by-side comparison to the mean of four transfer standard UV-A sensors under UV-enhanced T5 fluorescent tubes. The transfer standard UV sensors are calibrated though side-by-side comparison to an Apogee model PS-300 spectroradiometer under sunlight (clear sky conditions) in Logan, Utah. The PS-300 is calibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).
UV-A radiation is important in material sciences and has numerous photo-biological functions that are both harmful and beneficial. Apogee’s new UV-A radiometers offer a low-cost option for continuously measuring UV-A radiation in outdoor environments, laboratory settings, and monitoring the filtering ability and stability of various materials RUGGED, SELF-CLEANING HOUSING Sensor features an anodized aluminum body with fully-potted electronics. The dome-shaped sensor head minimizes errors by shedding dust and water for a selfcleaning performance. HIGH QUALITY CABLE Pigtail-lead sensors feature on IP68, marine-grade stainless-steel cable connectors attached directly to the sensor head to simplify sensor removal for maintenance and recalibration. CALIBRATION TRACEABILITY Apogee UV-A series sensors are calibrated through side-by-side comparison to the mean of four transfer standard UV sensors under sunlight (clear sky conditions) in Logan, Utah. The transfer standard UV-A sensors are calibrated though side-by-side comparison to an Apogee model PS-300 spectroradiometer under sunlight (clear sky conditions) in Logan, Utah. The PS-300 is calibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).
TYPICAL APPLICATIONS •Meteorology and Weather stations •Hatcheries and incubators •Climatic chambers and green houses •Storage rooms •Artificial snow machines •Battery operated devices AERODYNAMIC SHAPE The Apogee EE08-SS is a customized version of the EE08 probe made by Austrian manufacturer E + E Elektronik. After years of evaluation, the EE08-SS has emerged as our sensor of choice over more expensive probes for accuracy, stability, and durability. The Apogee EE08-SS features an improved right angle, IP67 rated, stainless-steel M12 connector; heat-reflective white cabling; and a more durable, metal-grid dust filter. These features added by Apogee only slightly increase the price over the base model from E + E, but greatly improve the performance and reduce the maintenance of the probe, especially when used with a fan-aspirated radiation shield like the Apogee TS-100.
Apogee SP series pyranometers are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated under sunlight in Logan, UT traceable to the World Radiometric Reference (WRR) in Davos, Switzerland. TYPICAL APPLICATIONS •Solar panel arrays •Agricultural, ecological, and hydrological weather networks STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate pyranometers in accelerated aging tests and field conditions is less than 2 % per year. UNIQUE DESIGN A patented dome-shaped sensor head keeps the sensor clean and minimizes errors by shedding water. Sensors are housed in a rugged anodized aluminum body and electronics are fully-potted. MOUNTING OPTIONS Mount the SP-710-SS with an AL-130 albedometer mounting bracket or an AM-130 albedometer mounting fixture with a 12” rod. The SP-722-SS is mounted using an AM-150 mounting bracket or AM-500 mounting bracket. The AM-150 may be used to mount sensors directly to a solar panel
Typical Applications • Air temperature and humidity measurement in weather networks, often for weather forecasting • The precise measurement of air temperature and humidity gradients above the land surface • Climate change monitoring Aerodynamic Shape A curved inlet redirects air into the shield and funnels it past the sensing area, which allows for a lower power requirement than other fan-aspirated shields on the market Rugged, Low Power Fan The fan has an ingress protection rating of IP55, which minimizes moisture and dust ingress. Fan speed and power can be further reduced when environmental conditions warrant. If the fan is continuously operated at full-speed, its lifetime is rated at 50, 000 hours (5.7 years). The fan includes a tachometer, which allows RPM to be monitored to detect obstruction. Purchasing Options The TS-100/200 is a shield only model. The TS-110/210 comes with a discounted, pre-installed ST-110 precision thermistor that provides ± 0.1 C uncertainty right out of the box. Also available with EE08-SS relative humidity probe (TS-120/220, TS-130/230).
TYPICAL APPLICATIONS • Chlorophyll concentration determination in plant leaves • Assessment of nutrient status, fertilizer requirements, evaluation of stress, and optimization of harvest NON-DESTRUCTIVE MEASUREMENTS The meter measures the ratio of red and near infrared transmittance with a sample rate of less than 3 seconds, resulting in measurements that are non-destructive and nearly instantaneous. This facilitates rapid measurement of multiple leaves and monitoring of the same leaves over time. LINEAR OUTPUT IN ABSOLUTE UNITS Calibrated to measure chlorophyll concentration in units of μmol of chlorophyll per m². This eliminates problems with relative measurements like SPAD, which is not linearly related to chlorophyll concentration. STORAGE CAPACITY AND GEO-REFERENCING Memory allocated to data storage allows for 160, 000 logged measurements. A mini USB port allows for direct connection to a computer to download data. An RS-232 port is available for external GPS connection, allowing field data to be geo-referenced. Storage capacity of geo-referenced data is 94, 000 measurements
The Apogee Cloudburst weighing precipitation gauge measures total precipitation from rain, snow, sleet, and hail with an algorithm to correct for temperature, evaporation, and vibration. The SG-400 series models are available in SDI-12 outputs. Inlet options include heated or unheated, with 8-inch (900 mm / 35 inches capacity) or 200 cm2 (1500 mm / 59 inches capacity) openings to meet National Weather Service (NWS) and World Meteorological Organization (WMO) recommendations. Features: • Rugged, large capacity, all-weather weighing precipitation gauge with no moving parts • High-accuracy, stable, stainless steel load cell enables easy recalibration or replacement when necessary • Black inlet adds natural solar heating, and heated inlet option prevents snow from capping on top of the gauge • Algorithm to filter the influences of evaporation, vibration, and temperature on measurements • Matches the research-quality measurements of competing gauges at a lower price
• Accurate measurements of important indoor environmental parameters in one elegant device • Works as a stand-alone operation or integrates into systems for greenhouses, grow rooms, and vertical farms Features: • User-friendly, accurate datalogger with multiple integrated sensors • PAR (SM-500) or ePAR (SM-600) sensor options • Data can be downloaded to smartphones or dataloggers via Modbus or Bluetooth • Graphical summaries of data over days, weeks, or months with the ApogeeConnect app for iOS and Android • Can hang by thin wires or be mounted to a mast • Integrators should contact Apogee for deployment opportunities
The heated precipitation detector measures precipitation frequency and length. The heating component allows it to detect solid precipitation such as sleet, snow, and hail in addition to liquid precipitation. By facilitating evaporation, it also increases the devices accuracy in measuring precipitation timing, even in short duration precipitation events. The heated precipitation detector can provide precise start and stop timing measurements. The heated precipitation detector is built to minimize power consumption by using the minimum heater level required to maintain the desired temperature. The heater settings are customizable by the user to either increase the heater’s performance or decrease the power consumption Features: • SDI-12 output • Customizable heater settings • Precise start & stop precipitation timing measurements • Sensitive capacitance circuit for accurate measurements
PORTABLE MEASUREMENTS The MS-100 is small and lightweight, with a rugged housing and minimal moving parts. The spectroradiometer is self-powered to take measurements anywhere, and the unit can store measurements for dowloading to a PC later. MEASUREMENT MODES • PPFD • ePPFD • YPFD • TPFD • PFD-UV • PFD-B • PFD-G • PFD-R • PFD-FR • FR F • PPE • iPPE • CFI • CRI • CCT • Lux • R F-R R • Foot candle • LambdaP • LambdaD • CIE 1931 x & y • CIE 1976 u’ & v’ Features : TYPICAL APPLICATIONS • Measurement of spectral output from radiation sources used for growing in greenhouses, growth chambers, etc. • Measurement of solar spectra with changing atmospheric conditions • Measurement of spectral reflectance on stationary (e.g., agricultural or ecological weather stations and flux towers), and mobile (e.g., plant phenotyping) platforms COMPLETE PACKAGE The InSight package includes a carrying case, MS-100, a protective case, a quickstart guide, mini-USB cable, power adapter, Modbus communication board, neck strap screw, and neck strap. The Apogee InSight software is available at
Features: TYPICAL APPLICATIONS •Measurement of spectral output of radiation sources for plant or human lighting •Reflectance and transmittance measurements of natural and synthetic surfaces and materials •Absorptance measurements of chemical samples THREE WAVELENGTH OPTIONS •350 to 1000 nm •300 to 830 nm •300 to 1000 nm PORTABLE FIELD MEASUREMENTS Features a small and lightweight design with a rugged housing and no moving parts. Spectroradiometer is powered through the USB port on a computer allowing mobile field measurements COMPLETE PACKAGE Includes spectroradiometer, two meter fiber-optic cable, cosine-corrected detector, USB cable, USB drive with required drivers and software (compatible with all 32-bit and 64-bit Windows operating systems), and shoulder bag (functions as a carrying case and field measurement pack). A reflectance probe and reflectance standard are available as accessories.
Features: TYPICAL APPLICATIONS •Measurement of spectral output of radiation sources for plant or human lighting •Reflectance and transmittance measurements of natural and synthetic surfaces and materials •Absorptance measurements of chemical samples THREE WAVELENGTH OPTIONS •350 to 1000 nm •300 to 830 nm •300 to 1000 nm PORTABLE FIELD MEASUREMENTS Features a small and lightweight design with a rugged housing and no moving parts. Spectroradiometer is powered through the USB port on a computer allowing mobile field measurements. COMPLETE PACKAGE Includes spectroradiometer, two meter fiber-optic cable, cosine-corrected detector, USB cable, USB drive with required drivers and software (compatible with all 32-bit and 64-bit Windows operating systems), and shoulder bag (functions as a carrying case and field measurement pack). A reflectance probe and reflectance standard are available as accessories
Apogee’s NDVI sensors are designed to measure reflectance in red and near infrared wavebands to calculate the normalized difference vegetation index (NDVI). NDVI is a measurement of plant greenness correlated with canopy chlorophyll content and leaf area that is used to monitor green-up in the spring and senescence in the fall. NDVI sensors are used to ground truth NDVI measurements taken from satellite imagery and continuously monitor plant health in the field and in controlled environments. Features: KEY FEATURES Digital SDI-12 output is standard with analog options available by request. Domed diffuser promotes self-cleaning to minimize errors from dust and debris. HIGH QUALITY CABLE Pigtail-lead sensors feature an IP68, marine-grade stainless-steel cable connectors attached directly to the sensor head to simplify sensor removal for maintenance and recalibration. FOR BEST MEASUREMENTS For best results, we recommend pairing upward-looking sensor(s) with downward-looking sensor(s).
Features: TYPICAL APPLICATIONS Net radiation is a key variable in the surface energy balance and influences turbulent fluxes, including evapotranspiration. Applications include measurements on flux towers and weather stations. DIGITAL OUTPUT An on-board 24-bit analog to digital converter makes measurements and provides a digital SDI-12 (SN-500) or Modbus (SN-522) output. This eliminates the need for multiple analog datalogger channels to measure each of the four components of net radiation. HIGH ACCURACY Measure all four components of net radiation with a digital output that saves datalogger channels. Comparable accuracy to industry-leading competition in long-term field testing. COMPACT & LIGHTWEIGHT The small lightweight design enables easy mounting to a cross arm using the AM-500 mounting bracket, which facilitates precision leveling. HEATED SENSORS Each sensor includes a 0.2 W heater to minimize errors from dew, frost, rain, and snow that can block the radiation path.
Apogee DLI meters are a rugged, simple-to-use device for spot checking PAR or ePAR levels while automatically recording the daily light integral and hours of light (photoperiod) for up to 99 days. Features: • Live photosynthetically active radiation (PAR) or extended PAR (ePAR) measurements • Logs and displays 99 days of: • Daily Light Integral (DLI) • Photoperiod to 0.1 hours • View data on-screen or download via USB-C port • ¼-20 threaded mounting socket for use with common camera tripods, etc • Rugged and splashproof • Scientific-grade accuracy
The new Apogee PAR-FAR sensor is a research-grade tool for measuring both the traditional PPFD photosynthetic photon flux and separately quantifying the photon flux of far-red photons (700-760 nm). The outputs include the traditional quantum flux, the far-red photon flux, and the far-red fraction (far-red photon flux density / sum of PPFD and far-red photon flux density). This sensor quantifies far-red photons, and for many applications it reduces the need for a more complex measurement with a spectroradiometer Features: TYPICAL APPLICATIONS •Monitoring plant light environments •Research plant morphogenic activity •Photobiology studies KEY FEATURES Digital SDI-12 output is standard with analog and Modbus options available. A domed diffuser promotes self-cleaning to minimize errors from dust and debris. HIGH QUALITY CABLE Pigtail-lead sensors feature IP68, marine-grade stainless-steel cable connectors attached directly to the sensor head to simplify sensor removal for maintenance and recalibration
Lighting quality is just as important as lighting quantity. In addition to measuring total PPFD, the Portable Spectroradiometer splits light to individually measure each color intensity or wavelength. Spectral output measurements can be used to maximize lighting efficiency, change the light characteristics to mimic seasonal changes, optimize visual appearance of displays, and many other applications Features: Wavelength Options 340 to 820 nm (SS-110) and 635 to 1100 nm (SS-120) wavelengths. Complete Package Includes spectroradiometer and cosine-corrected detector mounted in the housing, 180° FOV head, AL-200 bubble-level, USB cable for computer interface, carrying case, and USB drive with required drivers and software (Windows compatible, XP and later; Mac compatible, 10.9 and later). Unattended Field Measurements Spectroradiometer is small and lightweight with all measurement components contained in the durable, waterproof housing. Power consumption is low (1 W at 12 V DC) with automatic temperature compensation. Typical Applications Measurement of spectral output of radiation sources for plant or human lighting, reflectance and transmittance measurements of natural and synthetic surfaces and materials (often plant leaves and canopies), and absorptance measurements of chemical samples.
Features: Output Options •0 to 114 mV •0 to 2.5 V Accurate, Stable Measurements Long-term non-stability determined from multiple replicate pyrgeometers in accelerated aging tests and field conditions is less than 2 % per year. Unique Design Designed to optimize performance and price. The patented dome-shaped aluminum head is completely waterproof and minimizes errors by shedding water and dirt. All electronics are fully-potted. On-board Heater A 0.2 W heater keeps water off the sensor and minimizes errors caused by dew, frost, rain, or snow blocking the radiation path. Typical Measurement Applications •Longwave radiation measurement in agricultural, ecological, and hydrological •Weather networks and renewable energy applications.
Many plants are affected by interruptions in dark periods even by extremely dim light. Apogee’s new Quantum Light Pollution Sensor is designed to detect photons from 340-1040 nm that are below the sensitivity level of a typical quantum sensor. Detecting stray photons that disrupt the night is critical in preventing negative effects in plants such as plant hermaphrodism and stunted growth. The patented, dome-shaped aluminum head is cosine-corrected, self-cleaning, and fully-potted for a waterproof design Features: TYPICAL APPLICATIONS •Incoming PFD measurements over plant canopies in indoor greenhouses or in growth chambers, and reflected or under-canopy (transmitted) PFD measurements in the same environments •Measuring extremely dim light that may cause interruptions in plant dark periods MULTIPLE OUTPUT OPTIONS •Analog •4 to 20 mA •SDI-12 output ACCURATE, STABLE MEASUREMENTS Cosine-corrected with directional errors less than ± 5 % at a solar zenith angle of 75°. Long-term non-stability less than 2 % per year. HIGH QUALITY CABLE Pigtail-lead sensors feature on IP68, marine-grade stainless-steel cable connectors attached directly to the sensor head to simplify sensor removal for maintenance and recalibration CALIBRATION TRACEABILITY Apogee Instruments SQ-600 series quantum sensors are calibrated through side-by-side comparison to the mean of four transfer standard quantum sensors under a reference lamp. The transfer standard quantum sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).
On calm, clear nights leaf temperatures can drop well below air temperature. A radiation frost occurs when frost forms on the surface before the air temperature reaches freezing. The Apogee radiation frost dectector contains a high accuracy thermistor mounted in a rugged housing. The thermistor mimics a leaf, which provides estimates of leaf temperatures when monitoring radiation frost events Features: Thermistor accuracy is ± 0.1 C across a range of 0 to 70 C, providing accurate measurements at temperatures near zero where frost damage is likely to occur. Output Options Analog and digital output options include an unamplified voltage output or SDI-12 communication protocol. Typical Applications Applications include leaf temperature estimates in crop fields, orchards, and vineyards. Leaf temperatures returned by the detector can then be used to alert growers to the potential of frost damage to crops.
Atul Sharma(Virtual Hydromet)
1105/1, Salempur Rajputana Industrial Estate., Roorkee, Uttarakhand - 247667
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