{"product_id":"apogee-sm-600-epar-guardian-cea-multi-sensor-environmental-monitor","title":"Apogee SM-600 ePAR Guardian CEA Multi-Sensor Environmental Monitor","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDescription:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Apogee Guardian is an elegant device that provides accurate measurements of important indoor environmental parameters. The SM-600 is a user-friendly datalogger with multiple integrated sensors to measure extended PAR, air temperature, humidity, vapor pressure deficit and dewpoint, CO2 concentration, barometric pressure, and daily light integral* and photoperiod* (*only accessible via Bluetooth). Graphical summaries of these measurements can be downloaded to dataloggers via Modbus or smartphones via Bluetooth with the Apogee Connect app (iOS\/Android). While the SM-600 can take measurements as a stand-alone device mounted to a mast using the AM-270 mounting bracket or hung by thin wires, it can also integrate into systems for greenhouses, grow rooms, and vertical farms via Modbus or Bluetooth.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe SM-600 is constructed from high-quality ASA plastic with low thermal conductivity and a gloss white finish in selective areas to lower emissivity. The Guardian is filled with foam to provide additional thermal insulation. The internal airway utilizes a small venturi constriction to maximize airflow efficiency over the thermistor, which minimizes the thermal boundary layer’s influence on temperature measurements. Simultaneously, a separate module used to measure CO\u003c\/span\u003e\u003csub\u003e2\u003c\/sub\u003e\u003cspan\u003e, humidity, and pressure is aspirated by a passive, low velocity airstream using a “fluid entrainment” principle. Additionally, an extended quantum sensor is mounted on the top of the shield to measure ePAR. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eFeatures:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Guardian is filled with foam to provide additional thermal insulation. The internal airway utilizes a small venturi constriction to maximize airflow efficiency over the thermistor, which minimizes the thermal boundary layer’s influence on temperature measurements. Simultaneously, a separate module used to measure CO2, humidity, and pressure is aspirated by a passive, low velocity airstream using a “fluid entrainment” principle. Additionally, a quantum sensor is mounted on the top of the shield to measure PAR. The Guardian comes in two model versions: the SM-500 and SM-600. The SM-500 and SM-600 models are identical in all ways (size, function, and appearance) except for the embedded light sensor. The SM-600 sensor measures extended photosynthetically active radiation (ePAR), while the SM-500 measures PAR (400-700 nm). For the ePAR option, please see the SM-600 model.\u003cbr\u003e\u003c\/p\u003e\n\u003ch4 class=\"product-page-title\"\u003e\u003cstrong\u003eAccurate, Stable Measurements\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv class=\"product-page-content\"\u003eSensors are cosine-corrected to maintain accuracy when radiation comes from low angles (± 5 % at 75° zenith angle). Long-term non-stability determined from multiple sensors in accelerated aging test and field conditions is less than 2 % per year.\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\n\u003ch4 class=\"product-page-title\"\u003eData Collection and Display\u003c\/h4\u003e\n\u003cdiv class=\"product-page-content\"\u003eGraphical summaries of environmental measurements can be downloaded to dataloggers via Modbus or smartphones via Bluetooth with the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.apogeeinstruments.com\/downloads\/\" target=\"_blank\"\u003eApogeeConnect app\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e(iOS\/Android). While the Guardian can take measurements as a stand-alone device mounted to a mast or hung by thin wires, it can also integrate into systems for greenhouses, grow rooms, and vertical farms via Modbus or Bluetooth. Bluetooth and Modbus connectivity can be simultaneous, allowing for in-person spot checks and supplementary logging even while connected to a larger controller system.\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\n\u003ch4 class=\"product-page-title\"\u003eRugged Design\u003c\/h4\u003e\n\u003cdiv class=\"product-page-content\"\u003eThe Guardian is constructed from high-quality ASA plastic with low thermal conductivity and a gloss white finish in selective areas to lower emissivity with an IP rating of IP53. The Guardian is filled with foam to provide additional thermal insulation. It can operate in 0-95% non-condensing relative humidity. Additionally, a quantum sensor is mounted on the top of the shield to measure PAR (SM-500) or ePAR (SM-600). The internal airway utilizes a small venturi constriction to maximize airflow efficiency over the thermistor, which minimizes the thermal boundary layer’s influence on temperature measurements. Simultaneously, a separate module used to measure CO\u003csub\u003e2\u003c\/sub\u003e, humidity, and pressure is aspirated by a passive, low velocity airstream using a “fluid entrainment” principle.\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\n\u003ch4 class=\"product-page-title\"\u003eTypical Applications\u003c\/h4\u003e\n\u003cdiv class=\"product-page-content\"\u003eAccurate environmental measurements in controlled environments, such as greenhouses and growth chambers, help aid in decision making and environment management. Monitoring PAR or ePAR intensities, daily light integral and photoperiod, CO\u003csub\u003e2\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003econcentration, barometric pressure, and other parameters is critical for plant health, growth rate, photosynthesis levels, plant morphology, and crop steering. Required levels vary greatly by species and should be measured and controlled for optimum specimen health.\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\n\u003ch4 class=\"product-page-title\"\u003eCalibration\u003c\/h4\u003e\n\u003cdiv class=\"product-page-content\"\u003eTo ensure accuracy, each embedded quantum sensor located in a Guardian is carefully calibrated in controlled conditions and traceable to NIST reference standards.\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\n\u003ch4 class=\"product-page-title\"\u003eWarranty and Support\u003c\/h4\u003e\n\u003cdiv class=\"product-page-content\"\u003eAll Apogee products are backed by an industry-leading four year warranty and outstanding customer support.\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-page-content\"\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eDownloads:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/4150\/4548\/files\/SM-500-600-manual.pdf?v=1793284062\" title=\"Apogee SM-500 Guardian User Manual\" rel=\"noopener\" target=\"_blank\"\u003eApogee SM-600 Guardian User Manual\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/4150\/4548\/files\/SM-spec-sheet.pdf?v=1793284062\" title=\"Apogee SM-500 Guardian Specification Sheet\" rel=\"noopener\" target=\"_blank\"\u003eApogee SM-600 Guardian Specification Sheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/4150\/4548\/files\/Guardian-Quickstart-Guide.pdf?v=1793284063\" title=\"Apogee SM-500 Guardian Quick Start Guide\" rel=\"noopener\" target=\"_blank\"\u003eApogee SM-600 Guardian Quick Start Guide\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/4150\/4548\/files\/SM-500-600-td.pdf?v=1793284062\" title=\"Apogee SM-500 Guardian Technical Drawing\" rel=\"noopener\" target=\"_blank\"\u003eApogee SM-600 Guardian Technical Drawing\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Apogee Instruments","offers":[{"title":"Default Title","offer_id":67938302001188,"sku":"SM-600","price":1339.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/4150\/4548\/files\/SM-500USA.jpg?v=1793282075","url":"https:\/\/scientificsales.com\/products\/apogee-sm-600-epar-guardian-cea-multi-sensor-environmental-monitor","provider":"Scientific Sales","version":"1.0","type":"link"}