The MF1 is an all-metal variable area (float) flow meter for liquids, gases and steam. A magnetically coupled float drives the local pointer and the modular transmitter without any additional penetration of the measuring tube, so the meter stays leak-tight at pressures up to 42 MPa (Class 2500) and process temperatures from -196 C to +450 C.
Vertical bottom-in/top-out, top-in/bottom-out and horizontal installations are available, together with high-temperature, cryogenic, jacketed, hygienic and PTFE/PFA-lined corrosion-resistant versions. The modular transmitter can be exchanged or upgraded on site, and 14 built-in self-diagnostics watch the sensor, float and electronics continuously.
Key Features
- All-metal construction with magnetic-isolation sensing, no extra tube penetration
- Turndown 10:1 standard, 20:1 special, up to 100:1
- Accuracy class 1.5 standard, class 1.0 special version
- Body and float in 304, 316, 304L, 316L, PTFE/PFA lined, Hastelloy, titanium, Inconel, Monel or ceramic
- Modular transmitter with LCD showing instantaneous and total flow; dual converter / dual scale options
- Outputs: 4-20mA, HART7, FF, PROFIBUS-PA, Modbus-RTU, Ethernet-APL; NAMUR, dry-contact and open-collector alarms; battery-powered version
- Explosion-proof versions for gas and dust (PCEC / ATEX / EAC), SIL3, IP66/IP67
| Nominal diameter | DN15–DN200 (1/2"–8") |
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| Process connection | standardflange HG/T 20592-2009, HG/T 20615-2009; optional GB/T 193-2003 thread, GB/T 12716-2011 NPT thread, QB/T 2004-1994 standard |
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| Measuring range | (20°C)1.0 ~ 200000 L/h: (0°C, 0.1013 MPa)0.05~6000 m³/h |
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| Accuracy / repeatability | standard 1.5 ; special 1.0, 2.0, 2.5, 4.0 ; better than ±0.3% |
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| Turndown ratio | standard 10 : 1; special 20 : 1, max. 100:1 |
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| Pressure loss | 2 kPa ~ 50 kPa |
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| Process temperature | standard -40–+120°C (with heat tracing -80–+200°C); -40–+450°C; -196–+80°C; PTFE -40–+100°C; PFA -40–+120°C |
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| Process pressure | PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320, PN400; Class150, 300, 600, 900, 1500, 2500 |
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| Viscosity range | DN15（K1.0~1.3）: 5 mPas; DN15 (K1.4~1.10): 30 mPa.s; DN25（K2.0~2.2）: 80 mPa.s; DN25 (K2.3~2.7): 150 mPa.s; DN50~DN100: 240mPa.s; DN150~DN200: 300mPa.s |
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| Housing material | cast aluminum, polyester coated; 304 316 stainless steel; 304 316 stainless steel |
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| Ambient temperature | local indication -40–+120°C; remote transmission -40–+85°C (LCD -20–+70°C); intrinsically safe, flameproofbattery version -40–+60°C |
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| Two-wire output | 24VDC , 4–20mADC , white backlight LCD; 4–20mADC+HART7, white backlight LCD |
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| Four-wire output | 12VDC 24VDC , RS485/Modbus, white backlight LCD |
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| Switch output | open collector: , 30VDC/100mA; dry contact: , 175VDC/0.5A; NAMUR: two-wire |
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| Damping / data storage | 0–32s; data retention ≥10 |
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| Communication protocol | HART7 ( BEJING MASTER 0x619A, MF1 EsH/EsN 0xE638, FSK); FOUNDATION Fieldbus H1/ITK6.4 ( 0x000168, MF1 EsFF 0x0001); PROFIBUS-PA 3.02 (MF1 EsPA); Modbus-RTU; Ethernet-APL 10Mbps (EsAP), optional HART-IP PROFINET |
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| Explosion protection | PCEC: Ex ia IIC T1–T6 Ga, Ex iaD 20 T80°C–T440°C, Ex d IIC T1–T6 Gb, Ex tD A21 T80°C–T400°C; battery version Ex ia IIC T4 Ga; ATEX, EAC |
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| Safety / metrology certification | SIL3 (IEC 61508 Parts 1-7:2010); CPA, PAC, KIM |
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| EMC / PED / TSG | 2014/30/EU, EN IEC 61000-6-2:2019, EN IEC 61000-6-4:2019; PED 2014/68/EU Module H |
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| Protection class | IP66/IP67, GB 4208/IEC 60529 |
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| Surge protection | optional , 2KV, 4KV(4 ) |
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| Electrical connection | 1/2NPT, M20×1.5 or other sizes |
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| Ambient humidity / storage temperature | 5%–95%; -45–+85°C |
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Measuring tube and float in 304, 316, 304L, 316L, 304/PTFE, 316/PTFE, PTFE, Hastelloy, titanium, Inconel, Monel or ceramic. Indicator housing in cast aluminium or 304/316 stainless steel. Jacketed version available for crystallising media.
What media can the MF1 measure?
Liquids, gases and steam. Wetted parts are available in stainless steel, PTFE/PFA lining, Hastelloy, titanium and other alloys, so corrosive media such as sulfuric acid, hydrochloric acid and caustic soda can be metered.
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