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| 型号： | PF2D520-13-1 |
| 厂商： | SMC Corporation of America |
| 文件页数： | 11/13页 |
| 文件大小： | 0K |
| 描述： | SENSOR FLOW CHEM 1.8-20L/MIN |
| 标准包装： | 1 |
| 系列： | PF2D |
| 传感范围： | 1.8 ~ 20 LPM |
| 气流传感器类型： | 液体 |
| 输入电压： | 12 V ~ 24 V |
| 端口尺寸： | 母型，1/2"，0.5"（12.7mm）NPT |
| 主体材料： | 钢 |
| 产品目录页面： | 2804 (CN2011-ZH PDF) |
| 其它名称： | 606-1040 |
Series PF2A/PF2W
Specific Product Precautions 2
Be sure to read before handling.
ZSE ?
Mounting
Warning
[For air]
9. Never mount a switch in a place that will be
used as a scaffold during piping.
Damage may occur if an excessive load is applied to the
Usage
Warning
1. When using a switch for high temperature
fluid, the switch itself also becomes hot due to ISE ?
the high temperature fluid. Avoid touching the
switch directly as this may cause a burn. PSE
switch.
10. Be sure to allow straight pipe length that is
Operating Environment
Z
I
SE3
minimum 8 times the port size upstream and
downstream of the switch piping.
Warning
PS
SE 12
PF2 ?
IF ?
Data
When abruptly reducing the size of piping or when there is a
restriction such as a valve on the upstream side, the
pressure distribution in the piping changes and makes
accurate measurement impossible. Therefore, flow
restriction measures such as these should be implemented
on the downstream side of the switch.
[For water]
11. Never mount a switch in a place that will be
used as a scaffold during piping.
Damage may occur if an excessive load is applied to the
switch. Especially when the switch supports the piping, do
not apply a load of 15 N·m or more to the metal part of the
switch.
12. Be sure to allow straight pipe length that is
minimum 8 times the port size upstream and
downstream of the switch piping.
When abruptly reducing the size of piping or when there is a
restriction such as a valve on the upstream side, the
pressure distribution in the piping changes and makes
accurate measurement impossible. Therefore, flow
restriction measures such as these should be implemented
on the downstream side of the switch.
When used with the downstream side open, be careful of
the cavitation that is prone to occur.
Wiring
Warning
1. Verify the color and terminal number when
wiring.
Incorrect wiring can cause the switch to be damaged and
malfunction. Verify the color and the terminal number in the
instruction manual when wiring.
2. Avoid repeatedly bending or stretching the
lead wire.
Repeatedly applying bending stress or stretching force to
the lead wire will cause it to break.
3. Confirm proper insulation of wiring.
Make sure that there is no faulty wiring insulation (contact
with other circuits, ground fault, improper insulation between
terminals, etc.). Damage may occur due to excess current
flow into a switch.
4. Do not wire in conjunction with power lines
or high voltage lines.
Wire separately from power lines and high voltage lines,
avoiding wiring in the same conduit with these lines. Control
circuits including switches may malfunction due to noise
from these other lines.
5. Do not allow loads to short circuit.
Although switches indicate excess current error if loads are
short circuited, all incorrect wiring connections cannot be
1. Never use in the presence of explosive gases. Z
The switches do not have an explosion proof rating. Never use I
in the presence of an explosive gas as this may cause a
serious explosion. ZSP
2. Mount switches in locations where there is no
vibration greater than 98 m/s 2 , or impact ISA2
greater than 490 m/s 2 .
3. Do not use in an area where surges are IS ?
generated.
When there are units that generate a large amount of surge in ZSM
the area around pressure switches, (e.g., solenoid type lifters,
high frequency induction furnaces, motors, etc.) this may
cause deterioration or damage to the switches' internal
circuitry. Avoid sources of surge generation and crossed lines.
4. Switches are not equipped with surge
protection against lightning.
Flow switches are CE compliant; however, they are not
equipped with surge protection against lightning. Lightning
surge protection measures should be applied directly to
system components as necessary.
5. Avoid using switches in an environment where
the likelihood of splashing or spraying of
liquids exists.
Switches are dustproof and splashproof; however, avoid using
in an environment where the likelihood of heavy splashing or
spraying of liquids exists. Since the display unit of the remote
type switches featured here is not dust or splash proof, the
use in an environment where liquid splashing or spraying
exists must be avoided.
[For air]
6. Use the switch within the specified fluid and
ambient temperature range.
Fluid and ambient temperatures are 0 ° to 50 ° C. Take
measures to prevent freezing fluid when below 5 ° C, since this
may cause damage to the switch and lead to a malfunction.
The installation of an air dryer is recommended for eliminating
condensate and moisture. Never use the switch in an
environment where there are drastic temperature changes
even when these temperatures are operated within the
specified temperature range.
[For water]
7. Use the switch within the specified fluid and
ambient temperature range.
The fluid and ambient temperatures range for the switches is
0 ° to 50 ° C (and 0 ° to 90 ° C for high temperature fluid). Take
measures to prevent freezing fluid when below 5 ° C, since this
may cause damage to the switch and lead to a malfunction.
Never use the switch in an environment where there are
drastic temperature changes even when these temperatures
fall within the specified temperature range.
protected. Take precautions to avoid incorrect wiring.
16-11-33
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