Description
SMC PF2W720-04-27-M
Digital Flow Switch For Water PF2W Series (PF2W720-04-27-M)
Product Description
Integrated and remote type flow switch.
[Features]
· Has switch output, accumulated pulse output and analog output.
· Can switch between accumulated flow rate and instantaneous flow rate.
· Water-resistant construction conforming to IP65.
Configured Specifications
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- Type [Flow Switches] Flow Switch for Water
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- Fluid Type Water
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- Flow Rate Range (Max. Value) 10~Less than 50
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- Sensor, Monitor Structure [Integrated Type] Display Integrated
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- Output Method NPN Open Collector / Pulse
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- Analog Output Specification –
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- Pipe Port Type Female Thread
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- Plumbing Thread Type [Rc (R)] Rc
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- Plumbing Thread Nominal [1/2] 1/2
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- Pressure Resistant 1.5
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- Number of Input Points –
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- Number of Output Points 2
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- Analog Voltage Output –
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- Analog Current Output –
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- Power Supply Type DC
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- Power Supply Voltage [12~24] 12 to 24 ±10%
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- Liquid contact parts material [Resin] Resin
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- Acquired Standards –
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- Protection Structure IP65
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- Unit Specifications With unit conversion function
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- Lead Wire Lead wire with M12 connector 3 m
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- Rating Flow Range 2 to 16
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- Applicable Sensors –
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- Option –
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- Output Specification NPN open collector 2 outputs
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- Accuracy ±5% F.S.
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- Connection –
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- Operating Fluid Temperature –
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PF2W7 Specifications
| Model | PF2W704 | PF2W720 | PF2W740 | PF2W711 | |
|---|---|---|---|---|---|
| Measured fluid | Water | ||||
| Flow rate measurement range | 0.35 to 4.5 L/min | 1.7 to 17.0 L/min | 3.5 to 45 L/min | 7 to 110 L/min | |
| Set flow rate range | 0.35 to 4.5 L/min | 1.7 to 17.0 L/min | 3.5 to 45 L/min | 7 to 110 L/min | |
| Rated flow range | 0.5 to 4 L/min | 2 to 16 L/min | 5 to 40 L/min | 10 to 100 L/min | |
| Minimum set unit | 0.05 L/min | 0.1 L/min | 0.5 L/min | 1 L/min | |
| Accumulated pulse flow rate exchange value (pulse width: 50 ms) | 0.05 L/pulse | 0.1 L/pulse | 0.5 L/pulse | 1 L/pulse | |
| Working fluid temperature | 0 to 50°C | ||||
| Accuracy | ±5% F.S. | ±3% F.S. | |||
| Repeatability | ±3% F.S. | ±2% F.S. | |||
| Temperature characteristics Note 1) | ±5% F.S. (0 to 50°C, 25°C reference) | ||||
| Current consumption (without load) | 70 mA or less | 80 mA or less | |||
| Weight Note 2) | 460 g | 520 g | 700 g | 1,150 g | |
| Port size (Rc, NPT, G) | 3/8 | 3/8, 1/2 | 1/2, 3/4 | 3/4, 1 | |
| Detection type | Karman vortex type | ||||
| Indicator light | 3-digit, 7-segment LED | ||||
| Display unitsNote 3) | Instantaneous flow rate | L/min, gal (US) / min | |||
| Accumulated flow rate | L, gal (US) | ||||
| Operating pressure range | 0 to 1 MPa | ||||
| Pressure resistance | 1.5 MPa | ||||
| Accumulated flow rate rangeNote 4) | 0 to 999,999 L | ||||
| Ambient temperature range | During operation: 0 to 50°C, During storage: -25 to 85°C (No freezing or condensation) | ||||
| Output specificationsNote 5) | Switch output | NPN open collector: Maximum load current: 80 mA, Internal voltage drop: 1 V or less (with load current of 80 mA), Maximum applied voltage: 30 V, 2 outputs | |||
| PNP open collector: Maximum load current: 80 mA, Internal voltage drop: 1.5 V or less (with load current of 80 mA), 2 outputs | |||||
| Accumulated pulse output | NPN or PNP open collector (same as switch output) | ||||
| Status LEDs | Light up when output is turned ON, OUT1: green, OUT2: red | ||||
| Response time | 1 s or less | ||||
| Hysteresis | Hysteresis mode: Variable (can be set from 0), Window comparator modeNote 6): 3-digit fixed | ||||
| Power supply voltage | 12 to 24 V AC ±10% | ||||
| Environmental resistance | Enclosure | IP65 | |||
| Operating temperature range | 0 to 50°C | ||||
| Withstand Voltage | 1,000 V AC for 1 minute between terminals and housing | ||||
| Insulation Resistance | 50 MΩ or more (500 V DC measured via megohmmeter) between terminals and housing | ||||
| Noise resistance | 1,000 V p-p, pulse width 1 μs, rise time 1 ns | ||||
Note 1) PF2W711 is 15 to 35°C, 25°C reference is ±3% F.S. or less.
Note 2) Does not include lead wire.
Note 3) For digital flow switch unit switching function (Fixed SI unit [L/min or L] will be set for switch types without the unit switching function.)
Note 4) Accumulated flow rate is reset when the power supply is turned OFF.
Note 5) Switch output and accumulated pulse output can be selected during initial setting.
Note 6) Window comparator mode: Since hysteresis (H) will reach 3 digits, keep P_1 and P_2 or n_1 and n_2 separated by 7 digits or more. (In the case of OUT2, n_1 and n_2 will become n_3 and n_4, P_1 and P_2 will become P_3 and P_4.)
Note 7) All flow switches conform to the CE marking.
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