{"product_id":"dwyer-differential-pressure-digital-manometer-handheld-475-1-fm-fm-approved-0-20-w-c","title":"Dwyer Differential Pressure Digital Manometer Handheld, 475-1-FM, FM Approved, 0-20\" w.c.","description":"\u003cli\u003eIntrinsically-safe digital manometer for field calibration, monitoring or troubleshooting HVAC systems, performing clean room inspections, air velocity monitoring, and natural gas appliance-line testing\u003c\/li\u003e\u003cli\u003eFM-approved intrinsically safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations\u003c\/li\u003e\u003cli\u003eAccuracy is or - 0.5% of full scale at 60 to 78 degrees F, and or - 1.5% full scale at 32 to 60 and 78 to 104 degrees F\u003c\/li\u003e\u003cli\u003eDual push pads on the front panel control on-off, auto zero, and pressure unit selection between U.S. and metric units\u003c\/li\u003e\u003cli\u003eStandard connections accept 1\/8\" or 3\/16\" inside diameter (ID) vinyl or rubber tubing\u003c\/li\u003e\u003cbr\u003e\u003cp\u003eThe Dwyer Series 475 Mark III intrinsically-safe digital manometer provides positive, negative, and differential pressure measurements, and is used to perform field calibration, monitoring or troubleshooting HVAC systems, performing clean room inspections, air velocity monitoring, and natural gas appliance-line testing. The meter is FM-approved intrinsically safe for Class 1, Div. 1, Group A, B, C, D, T4 hazardous locations. It has an accuracy of or - 0.5% of full scale at 60 to 78 degrees F, and or - 1.5% full scale at 32 to 60 and 78 to 104 degrees F. The extruded aluminum case provides durability. The backlit four-digit LCD displays the pressure measurement. The zero function nulls minor pressure differences before measuring. Standard connections accept 1\/8\" or 3\/16\" inside diameter (ID) vinyl or rubber tubing. The meter is powered by a 9V battery (included) and automatically shuts off after 20 minutes to preserve battery life. \u003c\/p\u003e\u003ctable border=\"1\" width=\"800\" cellpadding=\"2\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#DFE1E0\"\u003e\u003cth colspan=\"2\" align=\"left\"\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure types\u003c\/td\u003e\n\u003ctd\u003ePositive, negative, and differential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia type\u003c\/td\u003e\n\u003ctd\u003eAir and compatible combustible gases\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase material\u003c\/td\u003e\n\u003ctd\u003eExtruded aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eFour-digit LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature limits\u003c\/td\u003e\n\u003ctd\u003e0 to 140 degrees F\/-17.8 to 60 degrees C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompensated temperature limits\u003c\/td\u003e\n\u003ctd\u003e32 to 104 degrees F\/0 to 40 degrees C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e6-17\/32 x 2-13\/16 x 29\/32 (H x W x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e9V alkaline battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAgency approvals\u003c\/td\u003e\n\u003ctd\u003eCE, FM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e \u003cp\u003eH is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.\u003c\/p\u003e\u003cp\u003eManometers measure the pressure of a liquid or gas. They are used in laboratory, medical equipment, engineering, automotive, and heating, ventilation, and air-conditioning applications. Manometers measure any combination of gauge, absolute, or differential pressures. Gauge pressure is the amount of pressure in a system relative to the ambient pressure, absolute pressure is the amount of pressure in a system relative to an absolute vacuum, and differential pressure is the difference between two pressures. Analog manometers are composed of columns of liquid, and they use gravity and the liquid's density to calculate pressure. Because they have no moving parts, analog manometers do not require re-calibration. Digital manometers have pressure sensors that are connected to a system with a hose to provide a digital readout of the amount of pressure present in a system. They use microprocessors to calculate pressure, and they require periodic calibration to help ensure accuracy.\u003c\/p\u003e\u003cp\u003eDwyer Instruments manufactures measurement and control instruments, including pressure gauges, flow meters, level instrumentation, temperature instrumentation, and air quality monitors. The company, founded in 1931, is headquartered in Michigan City, IN. \u003c\/p\u003e\u003cbr\u003eBrand: Dwyer, Model: 475-1-FM, Size: 0-20.00\"WC Range, 10 psig Maximum Pressure","brand":"Dwyer","offers":[{"title":"Default Title","offer_id":39868036219089,"sku":"EZFB009PAFLHI","price":494.41,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0514\/1227\/1313\/products\/71v-vcmi2ol.jpg?v=1625285361","url":"https:\/\/edealszone.com\/products\/dwyer-differential-pressure-digital-manometer-handheld-475-1-fm-fm-approved-0-20-w-c","provider":"edealszone","version":"1.0","type":"link"}