Digital Flow Switch For Air PF2A Series

Brand :

SMC

Caution

See catalog for specification details.
Product pictures are representations. CAD data is not supported for some model numbers.

Product Description

[Features]
・ Digital flow rate setting and detection are possible
・ Available in 2 types: integrated display type and separate type
・ It supports switch output, integrated pulse output, and analog output
・ Instantaneous flow rate and integrated flow rate can be switched
・ 2 independent flow rates can be set
・ Protective structure IP65

Specifications of Digital Flow Switch for Air PF2A Series

External appearance of PF2A7 Series (Integrated display type)

External appearance of PF2A5 Series (Remote type / sensor part)

Specifications of PF2A7

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
Display unit *1, 2)	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
	Switch output	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.

Specifications of PF2A5

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)
	Analog output	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.