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Digital Flow Switch DFS3 Series
- Variety of Models: Wide range of applications is supported with three body materials, resin, metal or stainless and two detection methods, magnetic or iron piece proximity. Flow rate can be set from low to high range (0.2 to 120L/min) by adding option.
- Visual Flow Check: Rotor movement can be checked through transparent window (except DFS3-1500/2500). Maintenance such as cleaning is easy with removable rotor cap without disassembling piping.
- High Responsiveness: Relay operates in 500ms and output indication turns red at the same time after flow rate falls under setting level.
- Easy Flow Rate Setting: Flow rate can be indicated in digital display and operation from remote location is easy in combination use with digital flow meter DFM2 series.
- Orientation Free Installation: There is no restriction to flow direction of fluid with rotor rotating method applied. So there is no restriction to installation orientation.
- Open Collector Output Added: Power relay output capacity for warning is improved to drive heavy load. Open collector output is added to respond to minimal load of programmable controller etc.
| Flow Rate | Low Flow Rate | Medium Flow Rate | High Flow Rate | |||
|---|---|---|---|---|---|---|
| Flow Rate Range | 0.2 to 2.5ℓ/min | Flow rate range A: 0.5 to 5L/min, Flow rate range B: 2.5 to 25L/min |
12 to 120ℓ/min | |||
| Body Material | Resin | Resin (standard type) | Metal | Stainless | Metal | Stainless |
| Main Unit Material | Polyacetal (glass included) |
Polyacetal (glass included) |
BC6 (nickel plating) |
SCS14 | BC6 (nickel plating) |
SCS14 |
| Detection Method | Magnetic proximity / iron proximity | Magnetic proximity / iron proximity | Magnetic proximity | |||
| Model | DFS3-1002/5002 | DFS3-1000/5000 | DFS3-1200 | DFS-1500 | DFS3-2000 | DFS3-2500 |
| Used Fluid | Water | |||||
| Connection Bore Diameter | Rc 3/8 | Rc 3/4 | ||||
| Pressure Range | 0 to 0.7MPa | |||||
| Withstanding Pressure | 1MPa | |||||
| Ambient Temperature | 0 to 50℃ (no dew condensation) | |||||
| Fluid Temperature | 0 to 70℃ (no dew condensation) | |||||
| Reading Accuracy | ±20％ FS | ±5％ FS | ||||
| Hysteresis | 5％ or less | 7％ or less | ||||
| Warning Output Response Time | Approximately 500ms | |||||
| Attachment Direction | Free | |||||
| Attachment Direction | Both directions | |||||
| Number of Output Points | 1c contact relay output x1 point or open collector output 2 points (OUT-HIGH, OUT-LOW 1 each) | |||||
| Rated Power Supply | DC 24V or AC 100V | |||||
Note) Be sure to use product within specified flow rate range. Values in table are those measured by tap water as fluid (20°C). Flow rate range varies depending on viscosity of fluid measured.
Electrical Specification (Common)
| Power Supply Voltage | DC 24V or AC 100V | AC 100V |
|---|---|---|
| Allowable Voltage Range | ±10% (absolute maximum rating DC 30V) | ±10％ |
| Power Consumption | 700mW or less | 3VA or less |
| Cable | VCTF 8 cores 0.3mm2 1m | Power Supply:VCTF 3 cores(0.5mm2) 1m Signal: VCTF 5 cores(0.5mm2) 1m |
| Frequency Output | Method | Photo coupler output |
| Max. Allowable Voltage | DC 50V | |
| Load Current | 4mA or less (output remaining voltage 0.5V or less) |
Output Specification / Open Collector Output
| Method | Photo coupler x2 (OUT-HIGH, OUT-LOW) OUT-HIGH: ON when the flow rate is setting value or more OUT-LOW: ON when the flow rate is setting value or less |
|---|---|
| Max. Allowable Voltage | DC 50V |
| Load Current | 10mA (output remaining voltage 0.8V or less) |
Output Specification / Relay Output
| Contact Structure | 1c×1(relay is driven when the flow rate becomes setting value or less) |
|---|---|
| Rating Control Capacity (at resistance load) |
DC 30V 5A/AC 250V 5A |
| Max. Allowable Electric Power (at resistance load) |
150W(DC)/1,250V(AC) |
| Max. Allowable Voltage | DC 125V/AC 300V |
| Max. Conducting Current | 5A |
| Min. Adapted Load | DC 5V 10mA |
| Insulation Resistance Between Contacts | DC 500V for insulation resistance type 1000MΩ or more |
| Withstanding Voltage Between Contacts | AC 1000V / 1 minute |
| Electrical Lifetime | 100,000 times or more (rated load / opening and closing frequency 30 times/minute) |
Relevant Part (Part for Resin Body of DFS3-1000/5000)
| Piping Adapter Set (for prevention of DFS3-1000/5000 port crack) | |
|---|---|
| Model | DF-AP |
| Content | Piping adapter 2 pieces O-ring for sealing (P-10A) 2 pieces |
| Low Flow Rate Piping Adapter Set (set to convert the medium flow rate type of DFS3-1000/5000 to low flow rate specification) | |
|---|---|
| Model | DF-FW2 |
| Content | Piping adapter 1 piece Low flow rate piping adapter 1 piece Low flow rate nozzle 1 piece O-ring for sealing (P-10A) 2 pieces O-ring for nozzle (1AS-6) 1 piece |
Note) For DFS3-1200/1500, please contact us.
