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2% F.S. or less (15 to 35C, based on 25C)?3% F.S. or less (0 to 50C, based on 25C)Analog voltage output (non-linear) output impedance 1 k output for display unit PF2A3Voltage output 1 to 5 V (within the flow rate range)Linearity: ?5% F.S. or less; allowable load resistance: 100 k or more.Current output 4 to 20 mA (within the flow rate range)Linearity: ?

Table of Contents

Maximum measured Maximum measured Minimum measured Minimum measured Part no. flow rate value [l/min] flow rate value [l/min] flow rate value [l/min] flow rate value [l/min] PF2A510--1 PF2A550--1 PF2A511--1 PF2A521--1 PF2A551--1 PF2A510--2 PF2A550--2 PF2A511--2 PF2A521--2 PF2A551--2 10 50 100 200 500 10 50 100 200 500 1.1 5.4 11 21 54 10.7 53.5 107 214 535 1.1 5.4 11 21 54 10.7 53.5 107 214

Digital Flow Switches Series PF2A

flow Min. measured flow Max. measured flow Min. measured flow Max. measured flow Min. measured flow Max. measured flow Part no. rate value [l/min] Part no. rate value [l/min] rate value [l/min] rate value [l/min] rate value [l/min] rate value [l/min] rate value [l/min] rate value [l/min] PF2A510--1 PF2A550--1 PF2A511--1 PF2A521--1 PF2A551--1 PF2A510--2 PF2A550--2 PF2A511--2 PF2A521--2 PF2A551

PF2A/PF2W

Maximum measured Maximum measured Minimum measured Minimum measured Part no. flow rate value [l/min] flow rate value [l/min] flow rate value [l/min] flow rate value [l/min] PF2A510--1 PF2A550--1 PF2A511--1 PF2A521--1 PF2A551--1 PF2A510--2 PF2A550--2 PF2A511--2 PF2A521--2 PF2A551--2 10 50 100 200 500 10 50 100 200 500 1.1 5.4 11 21 54 10.7 53.5 107 214 535 1.1 5.4 11 21 54 10.7 53.5 107 214

Digital Flow Switches

Connector pin numbers PF2W504T--1 PF2W520T--1 PF2W540T--1 PF2W504T--2 PF2W520T--2 PF2W540T--2 4 0.5 4 0.5 4 3 16 2 16 2 40 5 40 5 2 1 Pin no.

Digital Flow Switches, Series PF2A, Series PF2W

Connector pin numbers PF2W504T--1 PF2W520T--1 PF2W540T--1 PF2W504T--2 PF2W520T--2 PF2W540T--2 4 0.5 4 0.5 4 3 16 2 16 2 40 5 40 5 2 1 Pin no.

Series PF2W Digital Flow Switch For Water

(In case of output OUT2, n_1, 2 to be n_3, 4 and P_1, 2 to be P_3, 4.)

PF2x2.eng

Input of the Set point 2 L/min, L CFM x 10-2, CFM x 10-1, ft3 x 10-2, ft3 x 10-1, gal(US)/min, gal(US) 1 Brown DC(+) Non-Reverse output Reverse output Refer to the product catalogue or SMC website (URL http://www.smcworld.com) for more information about panel cut-out dimensions.

PF2x3.eng

ON Time ( ) Terminal block Danger: Connected sensor Terminal block number Accumulated output mode OFF Accumulated flow PF2A30 series PF2A31 series Time 1 2 3 4 DC(-) (for sensor) 1 Function selection mode Operator DC(+) (for sensor) 2 ( ) Accumlated flow PF2A550 PF2A510 PF2A511 PF2A521 PF2A551 3 Sensor input Reverse output Upper 3 digits Lower 3 digits This operation manual is intended for

PF2x5.eng

Main circuit Brown DC(+) + Connector 2 6 Blue DC(-) 12 to 24 VDC 2 1 5 Metal piping attachment 1 DC(+) To obtain more detailed information about operating this product, please refer to the SMC website (URL http://www.smcworld.com) or contact SMC directly. 2 N.C. / Analogue output : This drawing is the model of PF2W504/520.

Flow Range: 0 (PF2A510: 1-10l/min, PF2A550: 5-50l/min), Output Specification: 0 (NPN Open Collector 2 Outputs), Unit: M (S1 Fixed Unit)

Flow Range: 0 (PF2A510: 1-10l/min, PF2A550: 5-50l/min), Output Specification: 0 (NPN Open Collector 2 Outputs)

Flow Range: 0 (PF2A510: 1-10l/min, PF2A550: 5-50l/min), Output Specification: 1 (PNP Open Collector 2 Outputs)

Flow Range: 0 (PF2A510: 1-10l/min, PF2A550: 5-50l/min), Output Specification: 1 (PNP Open Collector 2 Outputs), Unit: M (S1 Fixed Unit)

Flow Range: PF2A510: 1-10l/min, PF2A550: 5-50l/min, Output Specification: NPN Open Collector 2 Outputs, Unit: S1 Fixed Unit

Flow Range: PF2A510: 1-10l/min, PF2A550: 5-50l/min, Output Specification: NPN Open Collector 2 Outputs, Unit: -