SMC Networks PF3W7 Series, Руководство по эксплуатации

Страница: 71 / 93

-70-
No.PF
※※
-OMM0005-N
Model PF3W704 PF3W720 PF3W740 PF3W711 PF3W721
Weight
Flow switch
only
210 g 260 g 410 g 720 g 890 g
With
temperature
sensor
285 g 335 g 530 g 860 g 1075 g
With flow
adjustment
valve
310 g 360 g 610 g - -
With
temperature
sensor and flow
adjustment
valve
385 g 435 g 730 g - -
With lead wire
+85 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.
(The value will be 7 s for the temperature sensor output.)

7: When the temperature sensor is used, it will be 250 VAC.

8: If a reduced piping diameter or the piping layout cause a restriction, it may not satisfy the specifications.

:

The form of the G thread (including the major and minor diameter and pitch of the internal thread) is based on JIS B0202 (ISO228-1).

Products indicated as ISO1179-1 (G thread for hydraulics) or ISO16030 (G thread for pneumatics) are based on JIS B0202
(ISO228-1) for effective depth of thread, seat surface area, surface roughness and squareness.

For ISO1179-1 (G thread for hydraulics), the withstand pressure is specified for each product. SMC do not guarantee the withstand
pressure specified in ISO1179-1, ISO1179-2, ISO1179-3, or ISO1179-4.

For ISO16030 (G thread for pneumatics), the withstand pressure is specified for each product. SMC do not guarantee the withstand
pressure specified in ISO16030.
Specifications of temperature sensor
Items Specifications
Rated temperature range 0 to 100
o
C

1
Setting/display temperature range -10 to 110
o
C
Min. setting/display unit 1
o
C
Display unit
o
C
Display accuracy ±2
o
C
Analogue output accuracy ±3%F.S.
Response time 7 s

2
Ambient temperature characteristics ±5%F.S.

1: The rated temperature range is only for the temperature sensor. As a whole product, the fluid temperature range is specified as 0 to
90
o
C.

2: The response time is only for the temperature sensor.