{"product_id":"ac-infinity-handheld-vpd-monitor","title":"AC Infinity Handheld VPD Monitor","description":"\u003cp\u003eThe AC Infinity Handheld VPD Monitor is a trigger-operated environmental meter that reads vapour pressure deficit at the leaf itself, the handheld counterpart to AC Infinity's fixed CLOUDCOM monitors. Where a mounted hygrometer reports what the air is doing, this monitor pairs an infrared leaf-temperature sensor with onboard air temperature and humidity sensing, displaying five values from a single trigger pull: ambient temperature, relative humidity, air VPD, leaf temperature and leaf VPD. AC Infinity describe it as the first handheld monitor to measure air and leaf VPD directly, which removes the arithmetic that normally sits between a canopy reading and a usable number.\u003c\/p\u003e\n\u003cp\u003eThe infrared sensor reads surfaces from -50 to 550 °C (-58 to 1022 °F) at a 12:1 distance-to-spot ratio, resolving a 2.5 cm (1 in) target from 30 cm (12 in) away, while a Class 2 laser projects a 12-point ring around the exact area being measured. Emissivity adjusts from 0.1 to 1.00, and the factory default of 0.98 is the manual's published value for leafy plants, so canopy readings are accurate without any setup. Response time is under 500 milliseconds, the previous five readings save automatically for comparing spots across a canopy, and on-device offsets allow calibration of temperature by ±10 °C (±20 °F) and humidity by ±10% in single-unit steps.\u003c\/p\u003e\n\u003cp\u003eThe monitor also calibrates the wider UIS ecosystem. Subtracting ambient temperature from leaf temperature gives the leaf offset figure that a VPD-enabled controller such as the \u003ca href=\"https:\/\/www.hydrooasis.com.au\/products\/ac-infinity-controller-69-pro-1\" target=\"_blank\" title=\"AC Infinity Controller 69 Pro\" rel=\"noopener\"\u003eAC Infinity Controller 69 Pro\u003c\/a\u003e or \u003ca href=\"https:\/\/www.hydrooasis.com.au\/products\/ac-infinity-ai-environmental-controller\" target=\"_blank\" title=\"AC Infinity Ai+ Environmental Controller\" rel=\"noopener\"\u003eAC Infinity Ai+ Environmental Controller\u003c\/a\u003e accepts in its settings, letting the controller compute leaf VPD from its own probes long after the spot check ends. The unit measures 15.1 x 10.3 x 4.5 cm (5.94 x 4.05 x 1.77 in), runs on two included AAA batteries and powers down after 20 seconds idle. It is a spot-checker rather than a logger; growers wanting continuous records should pair it with a fixed unit such as the \u003ca href=\"https:\/\/www.hydrooasis.com.au\/products\/ac-infinity-cloudcom-b-hygrometer\" target=\"_blank\" title=\"AC Infinity CLOUDCOM B Hygrometer\" rel=\"noopener\"\u003eAC Infinity CLOUDCOM B Hygrometer\u003c\/a\u003e. Its leaf-offset workflow turns a thirty-second canopy reading into the calibration figure that keeps a UIS controller automating to leaf VPD rather than air VPD.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e this monitor emits a Class 2 laser. Never stare into the beam, view it through optical instruments or point it at people or animals, and use caution around reflective surfaces. The laser can be disabled in the settings while readings continue as normal.\u003c\/em\u003e\u003c\/p\u003e","brand":"AC Infinity","offers":[{"title":"Default Title","offer_id":45839378317470,"sku":"819137024496","price":79.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/5261\/6094\/files\/AC_Infinity_Handheld_VPD_Monitor.png?v=1784690206","url":"https:\/\/www.hydrooasis.com.au\/products\/ac-infinity-handheld-vpd-monitor","provider":"Hydro Oasis","version":"1.0","type":"link"}