{"title":"Psychrometers","description":"\u003cdiv align=\"center\"\u003e\u003cspan style=\"FONT-SIZE: 12pt\"\u003e\u003cspan style=\"FONT-WEIGHT: bold\"\u003e\u003cspan style=\"font-size: 12pt;\"\u003ePsychrometers\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cspan style=\"FONT-SIZE: 10pt\"\u003e\u003c\/span\u003e\u003cspan style=\"FONT-SIZE: 10pt\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10pt;\"\u003ePsychrometers can be used to measure humidity, and relative humidity. To measure relative humidity, the psychrometer relies on the fact that humidity will change evaporation speed. The device consists of two thermometers. One is a dry bulb thermometer that is exposed to the air to measure the temperature. The second is a wet bulb thermometer that is used to determine the rate of evaporation in relation to temperature.  The drier the air, the more quickly the water will evaporate and the cooling effect will be stronger. These devices can compare the two temperatures and determine the humidity based on the difference. When the two thermometers have the same reading, the relative humidity is 100%.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cdiv align=\"center\"\u003e\u003cspan style=\"font-size: 10pt;\"\u003e\u003ca href=\"http:\/\/www.reliabilitydirectstore.com\/kb_results.asp\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt;\" title=\"Knowledge Base Articles\"\u003ePlease Visit our Knowledge Base for more Information!\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/div\u003e","products":[{"product_id":"extech-an310-large-vane-cfm-cmm-anemometer-psychrometer","title":"Extech AN310 Large Vane CFM\/CMM Anemometer\/Psychrometer","description":"\u003cstrong\u003eExtech AN310 Large Vane CFM\/CMM Anemometer\/Psychrometer\u003c\/strong\u003e\u003cbr\u003e\nMeasures Air Velocity, Air Flow, Relative Humidity, Wet Bulb and Dew Point\u003cbr\u003e\n\u003cbr\u003e\nExtech's 4\" (10cm) Large Vane Thermo-Anemometer series allows for more \nprecise readings on larger size ducts. Each meter simultaneously \ndisplays Airflow or Air Velocity and Temperature\u003cbr\u003e\n\u003cbr\u003e\nThe AN310 has a cone and square preset so when the adapter is attached \nto the vane of the meter, this allows HVAC technicians to be freed from \nthe hassle of calculating dimensions and also allow for quick and easy \nair flow measurements for these common large duct sizes (8.26\"\/210mm \nround and 13.6\"\/346mm square).\n                \u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/an310.jpg?v=1784668661\" style=\"width: 347px;\"\u003e\u003cbr\u003e\u003cbr\u003e\u003ch4\u003eAN310 Specifications\u003c\/h4\u003e\n                \n                        \n                        Type (anemometer): Vane\n                    \n                        \u003cbr\u003eMeasurement (anemometer): Ft\/Min, m\/s\n                    \n                        \u003cbr\u003eAir Velocity Max: 5900 ft\/min\n                    \n                        \u003cbr\u003eAir Velocity Min: 40 ft\/min\u003cbr\u003e\n                    \n                        Accuracy Air Velocity: ±1.5%\n                    \n                        \u003cbr\u003eHumidity: Yes\n                    \n                        \u003cbr\u003eTemperature: Yes \u003cbr\u003eDew Point: Yes                     \n                        \u003cbr\u003eMin\/Max Display: Yes\n                    \n                        \u003cbr\u003eData Hold: Yes\n                    \n                    \n                \n            \n                    \u003cbr\u003eData Logging: Yes\u003cbr\u003e\u003ch4\u003e\u003c\/h4\u003e\u003ch4\u003eAN319 General Attributes\u003c\/h4\u003e\n                \n                        \n                        Warranty: 1 YEAR\u003cbr\u003ePower Supply: Four AAA Batteries\u003cbr\u003eApproval: CE \u003cbr\u003eCountry of Origin: China\u003cbr\u003eWeight: 3 pounds\u003cspan class=\"toolTipTrigger\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003cbr\u003e\u003cbr\u003e","brand":"Extech Instruments Corp.","offers":[{"title":"Include NIST Calibration 10 to 12 weeks","offer_id":48343335534804,"sku":"EXT-AN310-NIST","price":596.5,"currency_code":"USD","in_stock":true},{"title":"Do Not Include NIST","offer_id":48343335567572,"sku":"EXT-AN310","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/EXT-AN310-2.jpg?v=1785144392"},{"product_id":"extech-hd500-psychrometer-with-infrared-thermometer","title":"Extech HD500 Psychrometer with Infrared Thermometer","description":"\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003e3-in-1 combination meter\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-weight: bold; font-style: italic;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-style: italic;\"\u003eCombines the functions of a Humidity Meter, Type K Thermometer, and InfraRed Thermometer for non-contact surface Temperature measurement\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in InfraRed Thermometer for non-contact temperature measurement to 932°F (500°C) with 30:1 distance to target ratio \n\u003c\/li\u003e\n\u003cli\u003eType K Temperature function for contact temperature measurement to 2501°F (1372°C) \n\u003c\/li\u003e\n\u003cli\u003eHighest 2% RH accuracy \n\u003c\/li\u003e\n\u003cli\u003eHeavy Duty rugged double molded housing with large triple LCD backlit display \n\u003c\/li\u003e\n\u003cli\u003eAuto power off \n\u003c\/li\u003e\n\u003cli\u003eUSB port includes PC software \n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003eIncludes Windows compatible software with USB cable, Type K bead wire temperature probe (-58 to 482°F\/-50 to 250°C), built-in stand, hard carrying case, and 9V battery\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n\u003c\/p\u003e\u003ctable style=\"WIDTH: 100%; BORDER-COLLAPSE: collapse\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdiv align=\"center\"\u003e \u003cimg alt=\"\" border=\"0\" height=\"99\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/hd500-3.jpg?v=1784668846\" style=\"width: 129px; height: 99px;\" width=\"171\"\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"center\"\u003e\n\u003cimg alt=\"\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/hd5002.jpg?v=1784668849\"\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"TEXT-ALIGN: center\"\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-weight: bold; font-size: 10pt;\"\u003e\u003c\/span\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold; font-size: 10pt;\"\u003ePatented non-contact InfraRed Thermometer\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold; font-size: 10pt;\"\u003etechnology built into a Hygro Thermometer is\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-weight: bold; font-size: 10pt;\"\u003eperfect for Home inspection applications.\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv align=\"center\"\u003e\u003cspan style=\"font-weight: bold; font-size: 10pt;\"\u003eUSB Port includes PC Software\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable style=\"WIDTH: 100%; BORDER-COLLAPSE: collapse\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eRange\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\n\u003cp align=\"left\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eBasic Accuracy\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eInfraRed Thermometer\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e-58 to 932°F (-50 to 500°C)\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e ±2% or ±4°F\/2°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eDistance to Target Ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e30:1\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eType K Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e-148 to 2501°F (-100 to 1372°C)\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e±(1% + 1°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eAir Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e14 to 140°F (-10 to 60°C)\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e±(2% ±4°F\/2°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eRH Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e0 to 100%RH\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e±2%RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eDew Point\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e-90.4 to 140°F (-68 to 60°C)\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eWet Bulb\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e-6.88 to 140°F (-21.6 to 60°C)\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e10 x 2.9 x 2\" (255 x 75 x 50mm)\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e12.3oz (350g)\u003c\/td\u003e\n\u003ctd style=\"VERTICAL-ALIGN: top\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n \u003cbr\u003e\u003cbr\u003e\u003ca href=\"http:\/\/www.extech.com\/instruments\/resources\/flash\/flash.asp?title=HD500%20Showcase%20Video\u0026amp;filename=HD500Showcase.swf\u0026amp;width=640\u0026amp;height=360\" target=\"_blank\"\u003e\u003cimg align=\"\" alt=\"\" border=\"0px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/vidicon.jpg?v=1784668780\"\u003e \u003c\/a\u003e\u003cbr\u003e \u003c\/div\u003e","brand":"Extech Instruments Corp.","offers":[{"title":"Do Not Include NIST","offer_id":48343341400276,"sku":"EXT-HD500","price":375.0,"currency_code":"USD","in_stock":true},{"title":"Include NIST Calibration Certificate","offer_id":48343341433044,"sku":"EXT-HD500-NIST","price":570.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/EXT-HD500-2.jpg?v=1785144456"},{"product_id":"extech-rh300-digital-psychrometer","title":"Extech RH300 Digital Psychrometer","description":"\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eFeatures:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSimultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature \n\u003c\/li\u003e\n\u003cli\u003eWet bulb measurements without slinging \n\u003c\/li\u003e\n\u003cli\u003eCalculates T1-T2 differential (Air Temperature minus External Probe Temperature) using optional probe (TP890) and T-2 Dew Point \n\u003c\/li\u003e\n\u003cli\u003eUnique sensor cap design twists to closed position for protection during storage \n\u003c\/li\u003e\n\u003cli\u003eSwitchable °F\/°C temperature units with 0.1° resolution \n\u003c\/li\u003e\n\u003cli\u003eData Hold freezes current reading on display \n\u003c\/li\u003e\n\u003cli\u003eMax\/Min readings \n\u003c\/li\u003e\n\u003cli\u003eAuto power off to save battery life \n\u003c\/li\u003e\n\u003cli\u003eRH300 complete with 2 AAA batteries \n\u003c\/li\u003e\n\u003cli\u003eOptional external temperature probe (TP890)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ca href=\"\/RH305-Digital-Psychrometer-Kit-p\/ext-rh305.htm\"\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eOptional Kit RH305 Includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRH300 \n\u003c\/li\u003e\n\u003cli\u003eTemperature probe \n\u003c\/li\u003e\n\u003cli\u003e33% and 75% calibration bottles \n\u003c\/li\u003e\n\u003cli\u003eCarrying case \u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/a\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications (Range, Max Resolution, Basic Accuracy): \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHumidity: 10 to 90%RH, 0.1%RH, ±3%RH \n\u003c\/li\u003e\n\u003cli\u003eTemperature (internal): -4 to 122°F (-20 to 50°C), 0.1°, ±1°F or ±0.6°C \n\u003c\/li\u003e\n\u003cli\u003eTemperature (external): -4 to 158°F (-20 to 70°C), 0.1°, ±1°F or ±0.6°C \n\u003c\/li\u003e\n\u003cli\u003eDew Point: -90.4 to 122°F (-68.0 to 49.9°C) \n\u003c\/li\u003e\n\u003cli\u003eWet Bulb: -6.9 to 122°F (-21.6 to 49.9°C) \n\u003c\/li\u003e\n\u003cli\u003eDimensions: 7x1.9x1\" (178.5x48.4x24.7mm) \n\u003c\/li\u003e\n\u003cli\u003eWeight: 3.3oz (95g)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Extech Instruments Corp.","offers":[{"title":"Do Not Include NIST","offer_id":48343344152788,"sku":"EXT-RH300","price":135.0,"currency_code":"USD","in_stock":true},{"title":"Include NIST Calibration Certificate","offer_id":48343344185556,"sku":"EXT-RH300-NIST","price":330.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/EXT-RH300-2.jpg?v=1785144511"},{"product_id":"extech-rh350-datalogging-superheat-psychrometer","title":"Extech RH350 Datalogging Superheat Psychrometer","description":"\u003cp\u003eDatalogging Superheat Psychrometer Features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuperheat differential measurements: T1-T2, Air-T1, T1-Dewpoint\n\u003c\/li\u003e\n\u003cli\u003eDual Type K external temperature probe inputs  (T1, T2)\n\u003c\/li\u003e\n\u003cli\u003eSimultaneous display of %RH, Temperature and Dew point or Wet Bulb or External Probe Temperatures\n\u003c\/li\u003e\n\u003cli\u003eBuilt-in RS-232 interface (optional RS-232 cable) - uses Windows® Hyperterminal to download data to a PC\n\u003c\/li\u003e\n\u003cli\u003eMemory stores up to 99 data records\n\u003c\/li\u003e\n\u003cli\u003eRetrieve Max\/Min readings with data and time plus Average function\n\u003c\/li\u003e\n\u003cli\u003eReal time clock\n\u003c\/li\u003e\n\u003cli\u003eTriple display with backlighting\n\u003c\/li\u003e\n\u003cli\u003eUnique sensor cap design twists to closed position for protection during storage\n\u003c\/li\u003e\n\u003cli\u003eSwitchable °F\/°C temperature units with 0.1° resolution\n\u003c\/li\u003e\n\u003cli\u003eData Hold freezes current reading on display\n\u003c\/li\u003e\n\u003cli\u003eAuto power off to save battery life\n\u003c\/li\u003e\n\u003cli\u003eRH350 complete with two Type K bead wire temperature probes and 4 AAA batteries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOptional RH355 Superheat Psychrometer Kit Includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRH350 meter\n\u003c\/li\u003e\n\u003cli\u003e33% and 75% calibration bottles\n\u003c\/li\u003e\n\u003cli\u003e2 temperature probes\n\u003c\/li\u003e\n\u003cli\u003eRS-232 cable\n\u003c\/li\u003e\n\u003cli\u003e4 AAA batteries\n\u003c\/li\u003e\n\u003cli\u003eCarrying case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSpecifications (Range, Max Resolution, Basic Accuracy):\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHumidity: 10 to 90%RH, 0.1% RH, ±3% RH\n\u003c\/li\u003e\n\u003cli\u003eTemperature (internal): -4 to 122°F (-20 to 50°C), 0.1°, ±1.8°F or ±1°C\n\u003c\/li\u003e\n\u003cli\u003eTemperature (external): -328 to 2498°F (-200 to 1370°C), 0.1°, ±0.3% or ±1.8°F\/±1°C\n\u003c\/li\u003e\n\u003cli\u003eDew Point: -90.4 to 122°F (-68.0 to 49.9°C)\n\u003c\/li\u003e\n\u003cli\u003eWet Bulb: -6.9 to 122°F (-21.6 to 49.9°C)\n\u003c\/li\u003e\n\u003cli\u003eDimensions: 9x2.2x1.7 (230x57x44)\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003eWeight: 5.3oz (153g)\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Extech Instruments Corp.","offers":[{"title":"Do Not Include NIST","offer_id":48343344283860,"sku":"EXT-RH350","price":184.0,"currency_code":"USD","in_stock":true},{"title":"Include NIST Calibration Certificate","offer_id":48343344316628,"sku":"EXT-RH350-NIST","price":281.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/EXT-RH350-2.jpg?v=1785144512"},{"product_id":"extech-rh390-precision-psychrometer","title":"Extech RH390 Precision Psychrometer","description":"\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eHighest 2% RH Accuracy Precision Psychrometer\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFast response time (\u0026lt;30 seconds) \n\u003c\/li\u003e\n\u003cli\u003eDual backlit display \n\u003c\/li\u003e\n\u003cli\u003eSimultaneous display of: \n\u003cul\u003e\n\u003cli\u003eHumidity\/Temperature \n\u003c\/li\u003e\n\u003cli\u003eHumidity\/Dew Point \n\u003c\/li\u003e\n\u003cli\u003eHumidity\/Wet Bulb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eData Hold and Min\/Max functions \n\u003c\/li\u003e\n\u003cli\u003eSlim design with rubberized sides for better grip and one handed operation \n\u003c\/li\u003e\n\u003cli\u003eAuto power off with disable and low battery indicator \n\u003c\/li\u003e\n\u003cli\u003eComplete with carrying case and 9V battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHumidity: 0 to 100%RH \n\u003c\/li\u003e\n\u003cli\u003eTemperature (Internal): -4 to 140 °F (-20 to 60 °C) \n\u003c\/li\u003e\n\u003cli\u003eBasic Accuracy: +\/-2%RH, +\/-3 °F\/2 °C \n\u003c\/li\u003e\n\u003cli\u003eMax. Resolution: 0.1%RH, 0.1 °F\/C \n\u003c\/li\u003e\n\u003cli\u003eDewpoint: -22 to 212 °F (-30 to 100 °C) \n\u003c\/li\u003e\n\u003cli\u003eWet Bulb: 32 to 176 °F (0 to 80 °C) \n\u003c\/li\u003e\n\u003cli\u003eDimensions: 7.8x1.7x1.3\" (200x45x33mm) \n\u003c\/li\u003e\n\u003cli\u003eWeight: 7oz (200g)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Extech Instruments Corp.","offers":[{"title":"Do Not Include NIST","offer_id":48343344349396,"sku":"EXT-RH390","price":249.0,"currency_code":"USD","in_stock":true},{"title":"Include NIST Calibration Certificate","offer_id":48343344382164,"sku":"EXT-RH390-NIST","price":346.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/EXT-RH390-2.jpg?v=1785144512"},{"product_id":"tpi-597c1-digital-hygrometer-psychrometer","title":"TPI-597C1 Digital Hygrometer \/ Psychrometer","description":"\u003cp\u003eRelative humidity (RH), temperature, ambient temperature, dew point, wet bulb, carrying case\u003cbr\u003e\nDigital Hygrometer\/Psychrometer: Dew point, wet bulb, relative humidity (RH), and temperature\u003cbr\u003e\n• Small diameter (0.45”) probe for measuring in air ducts \u003cbr\u003e\n• Relative Humidity (RH) accuracy of +\/-2% provides accurate reliable readings \u003cbr\u003e\n•Measure dew point and wet bulb temperature\u003cbr\u003e\n•Data record function stores minimum and maximum humidity and temperature measurement \u003cbr\u003e\n• 39” hard wired probe \u003cbr\u003e\n• Protective rubber boot\u003c\/p\u003e","brand":"Test Products International, Inc.","offers":[{"title":"Do Not Include NIST","offer_id":48343549935828,"sku":"TPI-597C1","price":262.95,"currency_code":"USD","in_stock":true},{"title":"Include NIST Calibration","offer_id":48343549968596,"sku":"TPI-597C1","price":262.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0451\/2724\/files\/TPI-597C1-1.jpg?v=1785148063"}],"url":"https:\/\/sejqw6-v1.myshopify.com\/collections\/psychrometers.oembed","provider":"Reliability Direct Store, LLC","version":"1.0","type":"link"}