Applicable Fluids - SMC Networks LFE#### Operation Manual

■ Applicable Fluids

Applicable fluid list
Substance description
Water
Deionized water
Water base coolant
Oil
Oil base coolant
Sea water
®
GALDEN
TM
Fluorinert
*: The applicable fluid list should be used as a guide.
1- Operate fluids with electric conductivity of 5μS/cm or more.
Note that this product can not be used for fluids with low conductivity.
This product cannot be used for fluids that do not conduct electricity such as De-ionized water and oil.
The electric conductivity is a ratio which shows how easily the electricity flows.
2- If insulating material gets stuck inside of the piping, it may cause an error.
Remove the foreign material stuck inside of the piping with a brush for washing test tubes so that internal rubber piping
will not be damaged.
3- If conductive materials such as metal get stuck to the interior surface in the piping, the switch may
malfunction.
Remove the foreign material as mentioned above.
4- If stray electrical currents are flowing through the fluid to be measured, the switch may malfunction.
Beware that electrical leakage currents may be generated by equipment around the flow sensor such as pumps, valves
and metal piping when this equipment is at different electrical potentials in relation to earth ground.
Cable with M12 connector lead wire (LFE-1-A3)
Item
Nominal cross
section
Conductor
O.D.
Material
Insulator O.D.
Colours
Sheath Material
Finished O.D.
Result Remarks
Conductivity of tap water: 100 to
○
200μS/cm
X The electric conductivity is too low.
When the ratio of water is 50% or
○
more.
X The electric conductivity is too low.
X The electric conductivity is too low.
X Corrosive to the sensor electrodes
X The electric conductivity is too low.
X The electric conductivity is too low.
Specifications
AWG21
approx. 0.9 mm
Non-lead heat resistant PVC
approx. 1.7 mm
Brown, White, Black, Blue
Lead free heat resistant PVC
Φ6
-23-
No.LV50***-OMQ0004-B