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The SMATEC SMF-T300 is a high-precision velocity-style liquid turbine flow meter designed for clean, low-viscosity industrial fluids. Constructed with 304/316 stainless steel housing, a 2Cr13 rotor, and tungsten carbide bearings, it delivers ±0.2% repeatability and handles pressures up to 25 MPa. Featuring standard Hirschmann quick-connectors, it supports pulse, 4-20mA, and Modbus-RTU RS485 outputs for water utilities, petrochemical distribution, and sanitary blending.
Flow Equation: Q = 3600 x (f / k)
Variables: Q = flow rate (m³/h); f = pulse frequency (Hz); k = factory-calibrated meter coefficient (pulses/L or pulses/m³).
| Nominal Diameter (mm) | Standard Flow Range (m³/h) | Extended Flow Range (m³/h) | Conventional Connection & Pressure (MPa) | Custom High-Pressure Ratings (MPa) |
|---|---|---|---|---|
| DN4 | 0.04 to 0.25 | 0.04 to 0.4 | G 1/2 Male Thread (6.3) | 10, 16, 25 |
| DN6 | 0.1 to 0.6 | 0.06 to 0.6 | G 1/2 Male Thread (6.3) | 10, 16, 25 |
| DN10 | 0.2 to 1.2 | 0.15 to 1.5 | G 1/2 Male Thread (6.3) | 10, 16, 25 |
| DN15 | 0.6 to 6 | 0.4 to 8 | G 1 Male Thread (6.3) / RF Flange (2.5) | 4.0, 6.3, 10, 16, 25 |
| DN20 | 0.8 to 8 | 0.45 to 9 | G 1 Male Thread (6.3) / RF Flange (2.5) | 4.0, 6.3, 10, 16, 25 |
| DN25 | 1 to 10 | 0.5 to 10 | G 1-1/4 Male Thread (6.3) / RF Flange (2.5) | 4.0, 6.3, 10, 16, 25 |
| DN32 | 1.5 to 15 | 0.8 to 15 | G 2 Male Thread (6.3) / RF Flange (2.5) | 4.0, 6.3, 10, 16, 25 |
| DN40 | 2 to 20 | 1 to 30 | G 2 Male Thread (6.3) / RF Flange (2.5) | 4.0, 6.3, 10, 16, 25 |
| DN50 | 4 to 40 | 2 to 40 | G 2-1/2 Male Thread (6.3) / RF Flange (2.5) | 4.0, 6.3, 10, 16, 25 |
| DN65 | 7 to 70 | 4 to 70 | RF Flange Mounting (2.5) | 4.0, 6.3, 10, 16, 25 |
| DN80 | 10 to 100 | 5 to 100 | RF Flange Mounting (2.5) | 4.0, 6.3, 10, 16, 25 |
| DN100 | 20 to 200 | 10 to 200 | RF Flange Mounting (1.6 / 2.5) | 2.5, 4.0, 6.3, 10, 16, 25 |
| DN125 | 25 to 250 | 13 to 250 | RF Flange Mounting (1.6 / 2.5) | 2.5, 4.0, 6.3, 10, 16 |
| DN150 | 30 to 300 | 15 to 300 | RF Flange Mounting (1.6 / 2.5) | 2.5, 4.0, 6.3, 10, 16 |
| DN200 | 80 to 800 | 40 to 800 | RF Flange Mounting (1.6 / 2.5) | 2.5, 4.0, 6.3, 10, 16 |
Pin 1 [GND]: 24V- DC Main Power Ground
Pin 2 [24V]: 24V+ DC Main Power Positive
Pin 3 [Lout-]: 4-20 mA Loop Output (-)
Pin 4 [Lout+]: 4-20 mA Loop Output (+)
Pin 5 [GND]: Shared Ground for Current/Pulse
Pin 6 [-FOUT]: Frequency Pulse Output Node
Pin 7 [485A]: Modbus RS485 Terminal A (-)
Pin 8 [485B]: Modbus RS485 Terminal B (+)
1234 or reset totalizer password 5555.F-1 (Unit): Selects engineering units (0=m³/h, 1=L/h, 2=L/min, 7=KG/h).
F-2 (Damping): Adjusts digital signal filtering time (0 to 99 seconds).
F-4 (Low Cutoff): Sets minimum low-flow threshold to clamp display to absolute zero.
F-6 (Density): Sets fluid density (g/cm³) for precise mass-flow scales.
F-7 / F-8 (Pulse): Toggles between original pulse and scaled volumetric pulse.
F-10 / F-11 (Modbus): Programs slave node address (1-247) and baud rate (1200-19200 bps).
P1 to P8 (Linearization): Factory-locked 8-point dynamic error correction curve mapping.
Flow Vector: Flow direction must strictly match the vector arrow cast on the casing.
Straight Run Demands: Standard layout requires upstream straight run ≥ 10D to 20D, downstream ≥ 5D. Insertion layout requires upstream ≥ 20DS, downstream ≥ 7DS.
Cavitation Formula: Downstream backpressure must satisfy: Pb ≥ 1.25 x Pv + 2 x (Pin - Pout).
Strainer Rule: A particulate filter must be installed upstream to prevent particles from blocking the rotor.
Water Utilities: Process water loops, deionized water matrices, and reverse osmosis (RO) systems.
Petrochemical: Volumetric custody transfer and batching of diesel, kerosene, gasoline, and low-viscosity oils.
Chemical Processing: Blending of methanol, ethanol, process solvents, and clear chemical additives.
Hygienic Manufacturing: Food, beverage, and pharmaceutical water/alcohol dosing loops.