LTI TruSense S300 Series Integration Manual 3rd Edition
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the angle of incident varies moment to moment.
The S300 is a highly-sensitive precision laser sensor and can measure to liquid surfaces
within its range specification. This includes penetrating through light steam or fog using
the Last target mode. A general rule of thumb when measuring through steam or fog is if
you can visually see the target, the sensor likely can as well. Remember, humans see in
the visible light spectrum whereas the LTI laser sensor utilizes the Infrared wave length
(IR) of 905nm. Certain objects will appear differently in the visible spectrum compared
to the 905nm wave length, which is why the human eye test is only a general rule of
thumb and not an absolute test of what the laser sensor is able penetrate through to the
liquid surface.
Liquids & Fluids Application
The S300 series sensor is engineered and specifically designed to directly measure all types of
fluids surfaces, including those that are low in reflectivity (such as clear water) and turbulent
surfaces. The S300 generates reliable results from the laser
’s
transmitted reflections off the
liquid surface that is picked up by the receiver, utilizing complex algorithms, which smooth out
the peaks and valleys caused by turbulent fluids surfaces. Because of this, TruSense S300 series
will integrate well in static and/or dynamic liquid level monitoring or control systems.
Optional Beam Diffuser
Figure 1: Beam Diffuser
The S300 Diffusing Lens accessory (Part # 7024972) will spread the beam of the laser
over a greater area. The diffusing lens will allow the S300 to achieve better results under
certain conditions. The diffusing lens in recommended under the following conditions:
•
Whenever the range to the target is less than 10 meters.
•
Whenever the liquid surface is turbulent during measurement.
•
Whenever the beam width is not restricted by the diameter of a stilling pipe.
The S300 Diffusing Lens is not recommended when
:
•
Measuring a range over 50 meters.
•
Whenever a stilling pipe is so narrow over its length that the diameter of the
stilling pipe will be less than the diameter of the beam spread (see Table 2).
✓
Figure 2: Beam Spread
