SMC Networks PF3W7 Series, Руководство по эксплуатации

Страница: 73 / 93

-72-
No.PF
※※
-OMM0005-N
Model PF3W711
PF3W721
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 max.
En
v
iro
n
m
e
n
t
Enclosure
IP65
Operating
temperature
range
0 to 50
o
C (No freezing and condensation)
Operating
humidity
range
Operation, Storage: 35 to 85%R.H. (No condensation)
Withstand
voltage
1000 VAC, for 1 minute between the terminals and housing
Insulation
resistance
50 MΩ min. (with 500VDC) between the terminals and housing
Standards and
regulations
CE marking, UL (CSA), RoHS
Material of wetted part
PPS, FKM, CPVC
Grease free
Piping port size

7
25 A
30 A
Weight
Without lead
wire
285 g
340 g
With lead wire 370 g
425 g

1: Please refer to the chart of measurement range of ethylene glycol aqueous solution on page 75 . 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. Refer to the "Applicable fluid list" on page 74 .

2: When the response time of the switch output is set to 0.5 s, repeatability will be ±3%F.S.

3: The operating pressure range and proof pressure vary depending on the fluid temperature. Refer to the chart on page 78

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 (5 minutes x 1 million times = 5 million minutes = Approx. 9.5 years for 24 hour
energizing). 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 and linked with the response of the switch output.

7: If a reduced piping diameter or the piping layout cause a restriction, it may not satisfy the specifications.