{"product_id":"ametek-rk-4000cm-1b-deadweight-tester-10-to-4010-cmh2o","title":"Ametek RK-4000CM-1B Deadweight Tester, 10 to 4010 cmH2O","description":"\u003ch2\u003eAmetek RK-4000CM-1B Deadweight Tester\u003c\/h2\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe Ametek RK-4000CM-1B Deadweight Tester is the cmH2O configuration of the AMETEK Model RK portable floating-ball pneumatic deadweight tester, a self-regulating primary pressure standard for low-pressure calibration work. Instead of a piston and cylinder, the RK design floats a rugged ceramic ball on a thin film of air: calibrated weights stacked on the ball carrier set the output pressure, and the supply regulates itself so the ball spins and floats in equilibrium without the operator rotating anything. The RK-4000CM certified range runs from 10 to 4010 cmH2O with 10 cmH2O weight increments, and the -1B accuracy option tightens the rating to +\/-0.025% of reading with a repeatability of +\/-0.005% of reading.\u003c\/p\u003e\u003cp\u003eThe tester is built for both bench and field use. It runs from a nitrogen bottle or instrument\/shop air with a supply between 30 and 450 psi (210 to 3100 kPa), connects to the device under test through a 1\/8 in female NPT port, and can be trimmed to local gravity when ordered. Stainless steel weight masses (8 to 30 kg, with optional small incremental aluminum sets) ship in a dedicated case beside the 38.1 x 24.1 x 20.3 cm tester base, which weighs 8.2 to 14.3 kg. Standard delivery includes the tester base with case, weight set, operating manual and a NIST-traceable certificate, and the temperature coefficient is held to +\/-0.00167% of reading per °C outside 23°C.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFloating-ball, self-regulating pneumatic design - no weights to spin or rotate during testing\u003c\/li\u003e\n\u003cli\u003eCertified range 10 to 4010 cmH2O with 10 cmH2O weight increments\u003c\/li\u003e\n\u003cli\u003e-1B accuracy option: +\/-0.025% of reading, with +\/-0.005% of reading repeatability\u003c\/li\u003e\n\u003cli\u003eRugged ceramic measuring ball for long-term stability\u003c\/li\u003e\n\u003cli\u003eRuns from nitrogen or instrument\/shop air, 30 to 450 psi (210 to 3100 kPa) supply\u003c\/li\u003e\n\u003cli\u003eStainless steel weight masses, 8 to 30 kg, in a dedicated carrying case\u003c\/li\u003e\n\u003cli\u003e1\/8 in female NPT connection; local gravity calibration available\u003c\/li\u003e\n\u003cli\u003ePortable tester base (38.1 x 24.1 x 20.3 cm) with NIST-traceable certificate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCalibration of low-pressure gauges, transmitters and switches in cmH2O units\u003c\/li\u003e\n\u003cli\u003eVerification of flow, level and HVAC instrumentation in laboratories and shops\u003c\/li\u003e\n\u003cli\u003eField pressure calibration where a portable primary standard is required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAmetek RK-4000CM-1B Deadweight Tester Technical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTester type\u003c\/th\u003e\n\u003ctd\u003ePneumatic floating-ball deadweight tester (AMETEK Model RK)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertified range\u003c\/th\u003e\n\u003ctd\u003e10 to 4010 cmH2O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight increment\u003c\/th\u003e\n\u003ctd\u003e10 cmH2O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccuracy (-1B option)\u003c\/th\u003e\n\u003ctd\u003e+\/-0.025% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRepeatability\u003c\/th\u003e\n\u003ctd\u003e+\/-0.005% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature coefficient\u003c\/th\u003e\n\u003ctd\u003e+\/-0.00167% of reading per °C outside 23°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure source\u003c\/th\u003e\n\u003ctd\u003eNitrogen or instrument\/shop air, 30 to 450 psi (210 to 3100 kPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003ctd\u003e1\/8 in female NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBall material\u003c\/th\u003e\n\u003ctd\u003eCeramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight masses\u003c\/th\u003e\n\u003ctd\u003eStainless steel, 8 to 30 kg (optional aluminum incremental sets)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTester dimensions\u003c\/th\u003e\n\u003ctd\u003e38.1 x 24.1 x 20.3 cm (15 x 9 x 8 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTester weight\u003c\/th\u003e\n\u003ctd\u003e8.2 to 14.3 kg (18 to 31.5 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeights case\u003c\/th\u003e\n\u003ctd\u003e30.5 x 21.6 x 29.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandard delivery\u003c\/th\u003e\n\u003ctd\u003eTester base with case, weight set, manual, NIST-traceable certificate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer information: \u003ca href=\"https:\/\/www.ametekcalibration.com\/-\/media\/ametekcalibration\/download_links\/pressure\/deadweight-testers\/deadweight-tester-rk-data-sheet-us.pdf\" target=\"_blank\" rel=\"noopener\"\u003eAMETEK Calibration RK Pneumatic Deadweight Tester data sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Ametek","offers":[{"title":"Default Title","offer_id":67776158040251,"sku":"IMM_31816751","price":7173.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/2635\/1547\/files\/ametek-mg-rk-4000cm-1b.jpg?v=1792552071","url":"https:\/\/na.indomultimeter.net\/products\/ametek-rk-4000cm-1b-deadweight-tester-10-to-4010-cmh2o","provider":"Indo Multimeter","version":"1.0","type":"link"}