Series PF3A digital flow switch provides continuous quantitative values as well as switched digital outputs when set flow levels are measured. The PF3A is suitable for applications requiring a metered quantity of air, such as for supply confirmation, filling accumulation, or fixed supply consumption. The oversized PF3A display has 2 screens, with main screen flow values in red or green, while
Operations Manual: PFxx-OMU0002 ES: Analogue output: Select 1 to 5 V or 0 to 10 V Output impedance: 1 k FS: Analogue output 4 to 20 mA Max. load impedance: 600 Min. load impedance: 50 PNP (1 output) + External input type PF3A7H--ES/FSMaximum load current: 80 mA Internal voltage drop 2 V max. External input: Input voltage of 0.4 V max.
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ES: Analogue output: Select 1 to 5 V or 0 to 10 V Output impedance: 1 k FS: Analogue output 4 to 20 mA Max. load impedance: 600 Min. load impedance: 50 PNP (1 output) + External input type PF3A7##H-ES/FS#-##-# Maximum load current: 80 mA Internal voltage drop 2 V max. External input: Input voltage of 0.4 V max.
Switch operation Normal or reversed output Maximum load current 80 mA Maximum applied voltage (Only NPN) 30 VDC Switch output Internal voltage drop (Residual voltage) 1.5 V or less (Load current 80 mA) Delay time 4 3.3 ms or less Variable at 0 to 60 s/0.01 step Hysteresis 5 Variable Protection Over current protection -90No.PF-OMX0002-B Models PF3A703H PF3A706H PF3A712H Output type Voltage
4 mA 4.16 mA 20 mA E F G Voltage output (0 to 10 V) 1 0 V 0.10 V 10 V 1: The analogue output current from the connected equipment should be 20 A or less when selecting 0 to 10 V.