Analytical bulk flow distance FLOW level pressure temperature industrial communication
MGT30 MINIATURE GLASS-TUBEVARIABLE AREA FLOWMETER All flowmeters are equipped with a needle valve in the base to facilitate precise setting of gas and liquid flow rates. On request, these valves can also be fitted in the top connection block. The mounts are made of stainless steel and feature a specially designed fitting to take the glass cone. This device permitseasy cone replacement without removal of the mount. The top connection block features a non-return valve to prevent backflow of the product (exception: flowmeters with valve in top connection block). Options Can be equipped with limit switches and differential pressure regulators (options). Front plates and holding devices are available for panel mounting. The flowmeters can be converted into bench instruments with the aid of a support base (option). Instrument designation Instruments with top and bottom connection block of: Stainless steel = MGT30 / SS 2
Technical data Instrument type MGT30 Turn-down ratio 10 : 1 Accuracy class to VDI/VDE Code 3513, Sh. 2.5 Measuring cone Length in mm (inches) 100 (3.94 ) Scale graduation flow units Operating data Max. allowable operating pressure at 20 C (68 F). Test pressure is 1.3 times the specified max. allowable operating pressure.* Standard 6 bar Max. process temperature 120 C (212 F) with limit switches 80 C (176 F) * At temperatures > 20 C (68 F) pressure drops at the rate of 1% per degree C ** Flow > 2400 l/h, air: 4 bar Overall height and connection dimensions see Dimensions and Weights Connection Standard 1/4 NPT, G1/4 Materials Measuring cone borosilicate glass Float Standard Stainless steel 1.4401 (316) Float stop PTFE Valve spindle Stainless steel 1.4571 (316 Ti) Gaskets Standard Viton Mount Top/bottom connection block: stainless steel 1.4581 (318 C17) Rail: stainless steel 1.4571 (316 Ti) Note: Responsibility as to suitability and intended use of our instruments rests solely with the purchaser. 3
Needle valves for gases and liquids Needle valves allow precise setting of the flow rate. Spindle Max. flow rate (qv ) Kv factor Cv factor dia. mm (inches) Air* l/h (SCFH) Water* l/h (US GPH) m 3 /h US GPM 1.0 (0.04 ) 100 (3.72) 5 (1.32) 0.018 0.021 2.5 (0.098 ) 1000 (37.22) 50 (13.21) 0.15 0.18 4.5 (0.177 ) 4300 (160.03) 160 (42.27) 0.48 0.56 Kv,Cv = valve characteristic * Reference conditions: 20 C (68 F), 1.013 bar abs. (14.7 psia). Valve Characteristics 4
Pressure Regulator Dimension in mm and inches Weight Panel recess Cover plate a b c d e f g mm inches mm inches mm inches mm inches mm inches mm inches mm inches kg Ibs 80 3.15 125 4.92 146 5.75 32 1.26 163 6.42 40 1.57 180 7.09 0.4 0.88 Panel Mounting 5
Pressure Regulator Dimension in mm and inches Weight Panel recess Cover plate a b c d e f g mm inches mm inches mm inches mm inches mm inches mm inches mm inches kg Ibs 80 3.15 125 4.92 146 5.75 32 1.26 163 6.42 40 1.57 180 7.09 0.4 0.88 Dimensions in mm and inches Flow regulators RA, NRA, RE, NRE Instrument Dimensions type c 1 c 1 d 1 d1 mm inches mm inches mm inches mm inches MGT30 125 4.92 - - 173 6.81 - - 6
Regulator characteristics Inlet pressure regulators Type RE, NRE Example: variable inlet pressure 6 bar (87 psig) Air at 20 C (68 F), 1,013 bar abs. (14.7 psia) q = flow rate v Outlet pressure regulators Type RE, NRA Example: inlet pressure 6 bar (87 psig), variable outlet pressure 5.5 bar (80 psig) Air at 20 C (68 F), 1,013 bar abs. (14.7 psia) q = flow rate v Dimensions h mm inches MGT30 183 7.20 7
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