Specification; Specifications - SMC Networks PF3W7 Series Operation Manual

Digital flow switch
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Specification

■Specifications

Specifications of body
Model
Measured fluid
Detection method
Rated flow range
Display flow range
Switch point range
Min. setting unit
Conversion of
accumulated pulse
(Pulse width = 50ms)
Fluid temperature
Display unit
Accuracy
Repeatability
Temperature
characteristics
Operating pressure range
Proof pressure
Pressure loss
Accumulated flow range
∗ 3
Switch output
Max. load
current
Max. applied
voltage
Internal
voltage drop
Response
∗ 2 ∗ 4
time
Output
protection
Flow
Output
mode
Temperature
Response
∗ 5
time
Analog
Voltage
output
output
Current
output
PF3W704
Water and ethylene glycol solution with a viscosity of 3mPas or less
0.5 to 4 L/min
0.35 to 5.5 L/min
0.35 to 5.5 L/min
0.01 L/min
0.05 L/pulse
0 to 90
L/min for real-time flow and L for accumulated flow
Display updating frequency 5 times/sec.
99999999.9 L
By 0.1 L
NPN: 1 V max. (at 80 mA load current) PNP: 1.5 V max. (at 80 mA load current)
Selects one of the output (hysteresis mode or window comparator mode), the output for
the accumulated flow and the accumulated pulse output.
Selects the output for fluid temperature (hysteresis mode or window comparator mode).
0.5 s/1 s/2 s (Linked with the switch output.)
Output voltage: 1 to 5 V, Output impedance: 1 kΩ min.
Max. load impedance: 300 Ω for 12 VDC and 600 Ω for 24 V
PF3W720
Karman vortex
2 to 16 L/min
1.7 to 22 L/min
1.7 to 22 L/min
0.1 L/pulse
o
C (No freezing and condensate)
±3%F.S. Display and analog output
∗ 2
±2%F.S.
o
Max. ±5%F.S. (25
C reference)
0 to 1 MPa
1.5 MPa
45 kPa at max. flow
99999999.9 L
By 0.5 L
NPN or PNP open collector output
80 mA
28 VDC
0.5 s/1 s/2 s
Short circuit protection
Output current: 4 to 20 mA
-62-
PF3W740
∗ 1
5 to 40 L/min
3.5 to 55 L/min
3.5 to 55 L/min
0.1 L/min
0.5 L/pulse
999999999 L
By 1 L
No.PF##-OMM0005

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