L ST4 0 0 |
U LT R A S O N I C L E V EL T R A N SM I T T ER
| O I/L S T4 0 0 - EN R E V. E
6
4 Installation
The transmitter is weather proof so it can be mounted outside.
Although LST400 is protected to IP65 it is recommended that it
be installed inside another suitable enclosure. The LCD display
should not be facing direct sunlight as this can cause the
display to fail. LST400 should be fixed to a wall or chassis plate
using the four holes provided.
• Do not install LST400 in areas of high vibration as this may
cause failure.
• Do not install LST400 in the close vicinity of electrical cable,
SCR's or variable speed drives.
• If m ounting the LST400 transmitter to a wall, ensure the unit
is mounted such that the wall will support greater than four
times the weight of the LST400.
Nut should be
hand tight only
Steel support
should be fitted
here
Transducer screws
into isolation kit
The installation of the transducer is the most important section
of this manual and has been divided into 6 sub sections.
1
The transducer must be fitted at the normal blanking
distance above the highest point of level. Check the
specification for the blanking distance.
2
Always use the plastic isolation kit. This kit must be fitted to
a rigid support and must not be allowed to swing. Use mild
steel or a suitable plastic. Do not use stainless steel as this
can cause ringing and may increase the blanking distance.
3
The transducer must be perpendicular to the material it is
measuring with a clear line of sight and not above beams or
filling points.
Liquid Level Measurement
Transducer at 90 deg to surface.
Solid Level Measurement
Transducer at 90 deg to surface.
4
If the transducer is in a coned vessel, it must be positioned
over the middle of the cone. This ensures that the transducer
receives the true echo and not one from the sides of the
cone.
