SMC Networks PF3W504, Operation Manual

Page: 44 / 74

-43-
No.PF
※※
-OMW0004-A
Model PF3W704 PF3W720 PF3W740
An
a
lo
g
u
e
o
u
tp
u
t
Response time

6
0.5 s/1 s/2 s
Voltage output Output voltage: 1 to 5 V, Output impedance:
1 kΩ
Current output
Output current: 4 to 20 mA
Maximum load impedance: 300
Ω for 12 VDC, 600 Ω for 24 VDC
Hysteresis Variable
External input Voltage free input of 0.4 V or less (reed or solid state type) for 30 ms or longer
Display method
2-screen display
(Main screen: 4-digit, 7-segment, 2-colour; red/green, Sub screen: 6-digit, 11-segment, White)
Display updating frequency 5 times/sec.
Indicator light Output 1 and 2: Orange
Power supply voltage 12 to 24 VDC ±10%
Current consumption 50 mA or less
E
n
v
iro
n
m
e
n
t
Enclosure
IP65
Operating temp.
range
0 to 50
o
C (No freezing and condensation)
Operating humidity
range
Operation, Storage: 35 to 85%R.H. (No condensation)
Withstand voltage

7
1000 VAC, for 1 minute between the terminals and housing
Insulation
resistance
50 MΩ min. (with 500 VDC) between the terminals and housing
Standard and regulations
CE marked (EMC directive, RoHS directive)
Material of wetted part
PPS, SUS304, FKM
Grease free

1: Please refer to the chart of measurement range of ethylene glycol aqueous solution on page 50 . Measurement is possible as long as
the fluid does not corrode the wetted parts, and viscosity is 3mPa

s (3 cP) or less. Be aware that water leakage may happen due to
internal seal shrinkage or swelling depending on kinds of fluid.

2: When 0.5 s is selected for the switch output response time, the repeatability becomes ±3%F.S.

3: The operating pressure range and proof pressure vary depending on the fluid temperature. Refer to the chart on page 59 .

4: The accumulated value will be cleared by turning off the power supply. It is possible to select the function to memorize it.
(Every 2 or 5 minutes.)
When 5 minutes interval is selected, take into consideration the maximum number of times it is possible to write to the memory device
(electronic part), which is 1 million times (In case of 24-hour communication, 5 minutes × access cycle (1 million cycles) = 18.50
million = approx. 35 years). Calculate the life in your operating conditions before using the memorizing function and use within this
range.

5: The response time is when the set value is 90% in relation to the step input. (The value will be 7 s for the temperature sensor output.)

6: The response time is when the set value reaches 90% in relation to the step input. Linked with the response time of the switch output.
(The value will be 7s for the temperature sensor output)

7: When the temperature sensor is used, it will be 250 VAC.