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A flow switch made by SMC.
[Features]
· Flow rate setting and monitoring are possible from the digital display
· 2 types are available, integrated and remote type
· Supports switch output, accumulated pulse output and analog output
· Switching from instantaneous flow rate to accumulated flow rate is possible
· 2 independent flow rate settings are possible
· Water-resistant construction conforming to IP65
Part Number
Configured Part Number is shown.
PF2A721-03-27
External appearance of PF2A7 Series (Integrated display type)
External appearance of PF2A5 Series (Remote type / sensor part)
Model | PF2A710 | PF2A750 | PF2A711 | PF2A721 | PF2A751 | |
---|---|---|---|---|---|---|
Measured fluid | Air, nitrogen | |||||
Flow rate measurement range | 0.5 to 10.5 L/min | 2.5 to 52.5 L/min | 5 to 105 L/min | 10 to 210 L/min | 25 to 525 L/min | |
Set flow rate range | 0.5 to 10.5 L/min | 2.5 to 52.5 L/min | 5 to 105 L/min | 10 to 210 L/min | 25 to 525 L/min | |
Rated flow range | 1 to 10 L/min | 5 to 50 L/min | 10 to 100 L/min | 20 to 200 L/min | 50 to 500 L/min | |
Minimum Unit Setting | 0.1 L/min | 0.5 L/min | 1 L/min | 2 L/min | 5 L/min | |
Accumulated pulse flow rate exchange value (pulse width: 50 ms) | 0.1 L/pulse | 0.5 L/pulse | 1 L/pulse | 2 L/pulse | 5 L/pulse | |
Display unit *1, 2) | Instantaneous flow rate | L/min, CFM × 10^-2 | L/min, CFM x 10^-1 | |||
Accumulated flow rate | L, ft^3 × 10^-1 | |||||
Operating Fluid Temperature | 0 to 50°C | |||||
Accuracy *3) | ±5% F.S. | |||||
Repeatability | ±1% F.S. | ±2% F.S. | ||||
Temperature characteristics | ±3% F.S. (15 to 35°C, 25°C reference), ±5% F.S. (0 to 50°C, 25°C reference) | |||||
Current Consumption | 150 mA or less | 160 mA or less | 170 mA or less | |||
Weight *4) | 250 g | 290 g | ||||
Port size (Rc, NPT, G) | 1/8, 1/4 | 3/8 | 1/2 | |||
Detection Type | Heat type | |||||
Indicator light | 3-digit 7-segment LED | |||||
Operating Pressure Range | -50 kPa to 0.5 MPa | -50 kPa to 0.75 MPa | ||||
Withstand pressure | 1.0 MPa | |||||
Accumulated Flow Rate Range *5) | 0 to 999,999 L | |||||
Output Specifications *6) | 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) | |||||
Indicator light | Light up when output is turned ON, OUT1: green, OUT2: red | |||||
Response Time | 1 s or less | |||||
Hysteresis | Hysteresis mode: Variable (It can be set from 0) Window comparator mode *7): Fixed (3 digits) | |||||
Power supply voltage | 12 to 24 V AC ±10% | |||||
Environment | Protective Enclosure | IP65 | ||||
Operating temperature range | During operation: 0 to 50°C, during storage: -25 to 85℃ (However, no freezing or condensation) | |||||
Withstand Voltage | 1,000 V AC for 1 min. between terminals and housing | |||||
Insulation Resistance | 50 MΩ or more (500 V DC measured via insulation resistance tester) between terminals and housing | |||||
Certification, standards, etc. | CE |
*1) For digital flow switch with the unit switching function (For the type without the unit switching function, fixed SI unit [L/min or L, m^3, m^3 × 10^3] will be set. )
*2) The flow rate display can be switched between the basic condition of 0°C and 101.3 kPa and the basic condition (ANR) of 20°C, 101.3 kPa and 65% RH.
*3) A straight section that is 8 times or more the pipe diameter should be provided to the pipe on the IN side of the product. If not, the accuracy may fluctuate by ±5% F.S. or more.
*4) It does not include lead.
*5) The accumulated flow rate value is reset when the power supply is turned off.
*6) Switch output and accumulated pulse output can be selected during the initial setting.
*7) Window comparator mode: Since the hysteresis (H) will reach 3 digits, separate P_1, P_2 or n_1, n_2 by 7 digits or more. (In the case of OUT2, n_1 and n_2 will become n_3 and n_4, and P_1 and P_2 will become P_3 and P_4.)
*8) All flow switches comply with CE marking.
*9) For wiring and thread standard, refer to the instruction manual.
*10) Even in striving to improve the quality, products may have small scratches, smears or variations in display color and brightness, etc., that do not affect the performance, verified as conforming products.
Model | PF2A510 | PF2A550 | PF2A511 | PF2A521 | PF2A551 | |
---|---|---|---|---|---|---|
Measured fluid | Air, nitrogen | |||||
Detection Type | Heat type | |||||
Rated flow range | 1 to 10 L/min | 5 to 50 L/min | 10 to 100 L/min | 20 to 200 L/min | 50 to 500 L/min | |
Operating Pressure Range | -50 kPa to 0.5 MPa | -50 kPa to 0.75 MPa | ||||
Withstand pressure | 1.0 MPa | |||||
Operating Fluid Temperature | 0 to 50°C | |||||
Accuracy *1, 2) | ±5% F.S. | |||||
Repeatability *1) | ±1% F.S. (Connect with PF2A3□□), ±3% F.S. (Connect with PF2A2□□) | |||||
Temperature characteristics | ±2%F.S. (15 to 35°C, 25°C standard) ±3%F.S. (0 to 50°C, 25°C reference) | |||||
Output Specifications *3) | Output for monitor | Analog voltage output (non-linear) output impedance 1 kΩ monitor section PF2A3□□ output | ||||
Analog output | Voltage output 1 to 5 V (Within the rated flow rate range) Accuracy: ±5% F.S., minimum load impedance: 100 kΩ (Output Impedance: 1 kΩ) | |||||
Current output 4 to 20 mA (Within the rated flow rate range) Accuracy: ±5% F.S., maximum load impedance: 300 Ω or less (12 V DC), 600 Ω or less (DC24V) | ||||||
Power supply voltage | 12 to 24 V AC ±10% | |||||
Current Consumption | 100 mA or less | 110 mA or less | ||||
Environment | Protective Enclosure | IP65 | ||||
Operating temperature range | During operation: 0 to 50°C, During storage: -25 to 85°C (No freezing or condensation) | |||||
Withstand Voltage | 1,000 V AC for 1 min. between terminals and housing | |||||
Insulation Resistance | 50 MΩ or more (500 V DC measured via insulation resistance tester) between terminals and housing | |||||
Certification, standards, etc. | CE | |||||
Weight *4) | 200 g | 240 g | ||||
Port size (Rc, NPT, G) | 1/8, 1/4 | 3/8 | 1/2 |
*1) Total accuracy when combined with PF2A2□□/3□□.
*2) It can be provided a straight pipe section 8 times or more the pipe diameter on the IN side of the product. If not, the accuracy may fluctuate by ±5% F.S. or more.
*3) The output method is selected by default.
*4) It does not include lead. (add 20 g for models with analog output [when current or voltage output has been selected])
*5) The flow rate unit is based on 0°C and 101.3 kPa.
*6) All sensor parts comply with CE marking.
*7) For wiring and thread standard, refer to the instruction manual.
*8) Even in striving to improve the quality, products may have small scratches, smears or variations in display color and brightness, etc., that do not affect the performance, verified as conforming products.
(Units: mm)
Dimensional drawing of PF2A710/750
Connector pin number of PF2A710/750
Pin name
Dimensional drawing of PF2A711/721/751
* It can be provided a straight pipe section 8 times or more the pipe diameter on the inlet side of the switch.
(Units: mm)
Dimensional drawing of PF2A510/550
Connector pin number of PF2A510/550
Pin name
All output specification dimensions
Dimensional drawing of PF2A511/522/551
All output specification dimensions
* It can be provided a straight pipe section 8 times or more the pipe diameter on the inlet side of the switch.
Structural drawing of PF2A710/750/PF2A510/550
Structural drawing of PF2A711/721/751 / PF2A511/521/551
Part Number |
---|
PF2A721-03-27 |
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Type | Flow Switch | Fluid Type | Air / Nitrogen Gas | Pressure Resistant(MPa) | 1 |
---|---|---|---|---|---|
Number of Output Points | 2 | Power Supply Type | DC | Power Supply Voltage(V) | 12 to 24 ±10% |
Please check the type/dimensions/specifications of the part PF2A721-03-27 in the Digital Flow Switch For Air PF2A Series series.
Part Number |
---|
PF2A521-N03-2 |
PF2A551-04-1 |
PF2A711-03-27 |
PF2A721-03-27-M |
PF2A721-03-67-M |
PF2A750-02-27 |
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