WFK3000M is a compact Karman vortex flow switch for equipment integration that shows the instantaneous flow of pure water and industrial water on a 2-digit LED and gives a 2-point transistor output (NPN/PNP selectable). Four flow rate ranges are available: 0.5 to 4.0, 1.5 to 12, 4.0 to 32 and 8.0 to 60 L/min.
| Applicable Fluids | Pure water, industrial water |
| Flow Rate Range | WFK3004M: 0.5 to 4.0, WFK3012M: 1.5 to 12, WFK3032M: 4.0 to 32, WFK3060M: 8.0 to 60 L/min |
| Port Size (Rc) | WFK3004M, 3012M and 3032M: -10 = 3/8, -15 = 1/2; WFK3060M: -20 = 3/4, -25 = 1 (inquire separately for G and NPT threads) |
| Port Material | Stainless steel (SCS13) |
| Max. Working Pressure | 1.0 MPa |
| Proof Pressure | 1.5 MPa |
| Ambient Temperature | 0 to 50 °C (85% RH or less) |
| Fluid Temperature | 1 to 70 °C |
| Accuracy | ±2.5% F.S. ±1 digit (1 digit = 0.1 L/min (less than 10 L/min), 1 L/min (10 L/min and over)) |
| Temperature Characteristics | ±5% F.S. (10 to 50 °C, base temperature 20 °C) |
| Pressure Loss | WFK3004M: 0.06 MPa or less (at 4.0 L/min); WFK3012M: 0.05 MPa or less (at 12 L/min); WFK3032M: 0.06 MPa or less (at 32 L/min); WFK3060M: 0.05 MPa or less (at 60 L/min) |
| Response Time | 1 sec |
| Display | Instantaneous flow rate 2-digit LED display (decimal display below 10 L/min, integer display at 10 L/min and over) |
| Switch Output | 2-point transistor output (select NPN/PNP); rating MAX. 50 mADC; internal voltage drop NPN 2.0 V or less / PNP 2.5 V or less (order codes N0, N1 NPN / P0, P1 PNP, a contact 0 / b contact 1) |
| Rotary Switch Output Setting Values (L/min, contact numbers 1 to 9, 0) | WFK3004: 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 (hysteresis 0.1); WFK3012: 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10, 11 (hysteresis 0.5); WFK3032: 5.0, 9.0, 12, 14, 16, 18, 21, 24, 27, 30 (hysteresis 1.0); WFK3060: 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 (hysteresis 3.0) |
| Power Supply Voltage | 12 to 24 VDC ±10% (max. 80 mA) |
| Cable | 3 m, 4-conductor, finished O.D. 4.8 mm, conductor 0.2 mm², insulation O.D. 1.3 mm |
| Mounting Orientation | Unrestricted in vertical/horizontal direction |
| Straight Piping Section | WFK3004M, 3012M and 3032M: without (IN side 10 D, OUT side 5 D recommended); WFK3060M: IN side 10 D, OUT side 5 D (D is port size) |
| Degree of Protection | IP65 or equivalent |
| Weight | WFK3004M, 3012M and 3032M: -10 380 g, -15 410 g; WFK3060M: -20 470 g, -25 510 g; bracket 28 g (including screws) |
| Wetted Part Materials | Attachment: stainless steel casting (SCS13); body: PPS resin; O-rings: NBR, FKM; Karman vortex detection sensor: PPS resin (interior: piezo ceramic) |