{"product_id":"btmeter-bt-846a-pro-cfm-anemometer-wind-gauge-black-detachable-extendable-vane-600-set-data-logging","title":"BTMETER BT-846A Pro CFM Anemometer Wind Gauge — Black, Detachable Extendable Vane, 600-Set Data Logging","description":"\u003cp\u003e\u003cstrong\u003eBTMETER's BT-846A Pro CFM anemometer is a handheld wind-speed and airflow meter that records up to 600 measurement groups and exports data to a PC for HVAC balancing and troubleshooting.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact, professional-grade wind gauge combines a detachable extendable vane sensor with a large backlit LCD and wide measurement ranges for velocity, temperature and volumetric flow. It supports five wind speed units and displays CFM\/CMM air volume after you enter the duct or register cross-sectional area. The unit stores readings locally for later export, making it useful for systematic airflow diagnosis, documentation and quality-control tasks.\u003c\/p\u003e\n\n\u003ch3\u003eHow accurate and wide-ranging are the wind and temperature measurements?\u003c\/h3\u003e\n\u003cp\u003eThe BT-846A measures wind speed from very low air movement to strong flows, with fine resolution and stated accuracy suitable for HVAC and ventilation checks. Air temperature is tracked alongside velocity so you can account for thermal effects when calculating volumetric flow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWind speed range: 0.001 to 100 mph with 0.001 resolution and ~3% accuracy plus 0.2 reading.\u003c\/li\u003e\n  \u003cli\u003eSpeed units available: m\/s, km\/h, ft\/min, knots, mph.\u003c\/li\u003e\n  \u003cli\u003eTemperature range: 32–113°F (0–45°C) with 0.1° resolution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat airflow and volume calculations can it perform for ducts and registers?\u003c\/h3\u003e\n\u003cp\u003eThe meter converts measured velocity into volumetric flow when you enter the area of the duct or register, displaying results in CFM or CMM. This saves time on manual math and helps standardize airflow checks across multiple vents or systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAirflow range: 0–999,900 ft³\/min (CFM) with adaptive resolution from 0.001 to 100.\u003c\/li\u003e\n  \u003cli\u003eAccepts area inputs from 0.001 to 9,999 ft² for on-the-fly CFM\/CMM calculation.\u003c\/li\u003e\n  \u003cli\u003eProvides live Current, Max, Min, 2\/3 Max and Average flow values for comparative diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the detachable extendable sensor help during HVAC balancing?\u003c\/h3\u003e\n\u003cp\u003eThe separate extendable vane allows you to position the sensor in registers or tight spaces while keeping the main instrument visible. Because the sensor can be replaced independently, maintenance is simpler and the tool has longer service life on the job.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExtendable sensor lets you read the display while probing deep vents or balancing registers.\u003c\/li\u003e\n  \u003cli\u003eDetachable design enables quick replacement if the vane is damaged.\u003c\/li\u003e\n  \u003cli\u003eLarge 1.69 x 2.36 inch backlit LCD makes measurements easy to read in dim mechanical rooms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I store and analyze measurements later?\u003c\/h3\u003e\n\u003cp\u003eYes — the BT-846A stores up to 600 groups of readings and can export the dataset to a PC for documentation or deeper analysis. This feature helps when producing reports, comparing before-and-after balancing results, or keeping records for compliance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOnboard memory holds 600 measurement groups for batch review.\u003c\/li\u003e\n  \u003cli\u003eExport capability to PC for spreadsheet or reporting workflows.\u003c\/li\u003e\n  \u003cli\u003eManual or automatic power-off conserves battery during intermittent use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The BTMETER BT-846A is built for HVAC technicians, building engineers, facility maintenance teams and ventilation contractors who need reliable, portable airflow and wind-speed measurement with data-logging. It also fits use by home performance specialists, environmental testers and anyone who requires repeatable CFM\/CMM readings and exportable records for inspections or quality control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eIncluded features:\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e5 wind speed units and temperature in °C\/°F.\u003c\/li\u003e\n  \u003cli\u003eCFM\/CMM volumetric calculations after area input.\u003c\/li\u003e\n  \u003cli\u003e600-set memory and PC export for record keeping.\u003c\/li\u003e\n  \u003cli\u003eDetachable extendable vane sensor, backlit LCD, carrying case and replaceable sensor design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many measurements can the BT-846A store?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It stores up to 600 groups of measurements for later review and PC export.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this meter display CFM directly?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — enter the duct area and it displays CFM or CMM synchronously with velocity.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BTMETER","offers":[{"title":"Default Title","offer_id":56840932131156,"sku":"B07PVM88GJ","price":98.34,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/btmeter-front-panel-display.jpg?v=1787073890","url":"https:\/\/gardenluxe.co.uk\/products\/btmeter-bt-846a-pro-cfm-anemometer-wind-gauge-black-detachable-extendable-vane-600-set-data-logging","provider":"Gardenluxe Uk","version":"1.0","type":"link"}