SMC Networks PF3W504, Operation Manual

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No.PF
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-OMW0004-A
Terms Meaning
K
Karman vortex
When an object is placed in a fluid stream, a vortex will be created in the fluid on the
downstream side. This vortex is called a Karman vortex. The frequency at which the
vortices are generated is proportional to the fluid velocity, therefore it is possible to
calculate the fluid flow rate by measuring the Karman vortex frequency.
Key-lock function
(Integrated display type)
This function prevents the set value from being changed by mishandling.
M Main piping This metal part connects the piping of the manifold body.
Measured fluid The fluid(s) that the product can measure.
Min. setting unit
(Integrated display type)
This shows the resolution of set and display values.
If the minimum setting unit is 0.01 L/min, the display will change in 0.01 L/min steps,
e.g. 0.50…..0.51…..0.52 L/min.
O
Operating humidity range Humidity range in which the product can operate.
Operating pressure range Pressure range in which product is operable.
Operating temp. range Ambient temp. range in which product is operable.
P
Part in contact with fluid
(wetted part)
A part that comes into physical contact with the fluid.
POWER indicator
(Remote sensor)
This indicator confirms for application of the power supply. This lights up when the
power is supplied. (Output specification identification and errors might be displayed
immediately after the power is supplied.) Remote sensor
Pressure characteristics
Indicates the change in the display value and analogue output when fluid pressure
changes.
Proof pressure Burst pressure at which the product is electrically or mechanically damaged.
R Rated flow range The flow range within which the product will meet all published specifications.
Rated pressure range The pressure range that satisfies the specifications.
Repeatability
Reproducibility of the display or analogue output value, when the measured
quantity is repeatedly increased and decreased.
Response time
Integrated display type: Time from when the target flow is applied until the flow
reaches 90% of the set value.
Remote type sensor: Time from when the target flow is applied until the analogue
output reaches 90% of the set value.
S Set flow range
(Integrated display type) The range of ON/OFF threshold values that can be set for those products with a
switch output.
Switch output
(Integrated display type)
Output type that has only 2 conditions, ON or OFF. When in the ON condition an
indicator light will show, and any connected load will be powered. When in the OFF
condition, there will be no indicator light and no power supplied to the load.
T
Temp. characteristics
Indicates the change in the display value and analogue output caused by ambient
temp. changes.
U
Unit selection function
(Integrated display type)
A function to select display units other than the international unit (SI unit) specified
in the new Japanese measurement law. Flow can only be displayed by SI units in
Japan.
W
Water hammer
A momentary steep pressure increase due the spread of pressure by closing a
contactor such as a valve for an extremely short time while there is a flow.
This pressure increase is known as water hammer or impact pressure.
Window comparator
mode
(Integrated display type)
An operating mode in which the switch output is turned on and off depending on
whether the flow is inside or outside the range of two set values.