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2 Mounting
2.1 Installation requirements
An LST100 level transmitter can be installed almost anywhere
in the tank. Consider the following installation conditions:
– Ensure the instrument is installed within recommended
temperature and pressure ratings.
– The sensor must be installed as perpendicular as possible
to the liquid surface being measured.
– Avoid installing the instrument in a location where vibration
may be present during operation.
– Mount with a clear line-of-sight to the target surface.
– If installed in a cylindrically shaped vessel, ensure that
the sensor is installed just above the lowest point in the
tank. This allows measurements to be taken as the tank
approaches empty.
– Use the mounting kit to raise the instrument above the
highest point in the tank.
– Close the unit after wiring in order to maintain ingress
protection.
– Loosen the cable gland when opening or closing the
terminal cover, so as not to twist the cable inside the
instrument.
2.2 Dimensions
Dimensions in mm (in.)
1.5 in.-11 BSP
1.5 in.-11 NPT / NPSM
Fig. 2.1: Transmitter with 1.5 inch thread dimensions
6 OI/LST100-EN | LST100 – Ultrasonic level transmitter
Ø 77.3 (3.0)
32 (1.3)
16
(0.6)
121.9 (4.8)
214.9 (8.5)
30 (1.2)
66 (2.6)
Ø 40.6 (1.6)
Dimensions in mm (in.)
2 in.-11 BSP
2 in.-11 NPT / NPSM
Fig. 2.2: Transmitter with 2 inch thread dimensions
Dimensions in mm (in.)
Seal
Ø
228.6 (9.0)
88.9
Bracket
(3.5)
Ø
101.6
(4.0)
Seal
Fig. 2.3: Transmitter mounting bracket dimensions
Ø 77.3 (3.0)
32 (1.3)
16
(0.6)
121.9 (4.8)
214.9 (8.5)
34.4 (1.4)
66 (2.6)
Ø 51.8 (2.0)
LST100 level transmitter
1.5 in. NPT threads
M90 x 2 threads
Nut
Tank
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