Omega Products LTU-2000 Installation Manual
®
LTU-2000 Series and
Tuning Fork Sensors
®
®
Contents
Introduction .................................................4
Models.....................................................5
Models and Dimensions .......................................6
Wiring Diagram ..............................................7
LTUP and LTUR Status Guide...................................9
LTum Status Guide ..........................................10
Installation .................................................11
Handling ..................................................12
Technical Specifications ......................................13
Trouble Shooting ........................................... 17
03
Introduction
LTU-2000 Series:
Point Level Switch
Omega's LTU-2000 Series use a piezo-electric crystal that enables the switch to vibrate
at a fixed pre-defined resonant frequency. When the tuning fork is submerged in the
medium the frequency at which the switch is vibrating, changes. This change is detected
by the electronics and is converted into a switch output (either relay or PNP/NPN
unit’s
depending on the model).
The red LED in the housing stays blinking when the is in contact with the
product. The same light stays on continuously when there is no contact with the product,
giving a positive indication at all times that the LTU-2000is working.
All models are made with 316 Stainless Steel and are available with ECTFE or epoxy
coatings and hygienic fittings for sanitary applications. Standard versions can operate at
temperatures up to 80ºC (176ºF) and higher temperature versions can operate at
temperatures up to 120ºC (248ºF). All models (except the mini-versions) have
adjustable time delay adjustment of 1, 5, 10 or 20 seconds and also have a Wet/Dry
selection for both High and Low level application requirements.
LTU-2000
Features
Unaffected by variations in density, conductivity, dielectric constant or viscosity
Unaffected by foam, tank agitation or vibration
Available in Threaded, Sanitary and Flanged connections
Available with customized length options to best suit your application
All 316SS body and wetted parts, coating when necessary
Adjustable response time (from 1 to 20 seconds)
Relay and Transistor outputs available
ECTFE
04
Models
LTUM1-DC
LTUM2-AC
®
LTUP-DC
HOUSINGNYLON
LTUM1-DC
®
LTUR
NYLON HOUSING
LTUM2-AC
®
LTUR-2012
ALUMINUM HOUSING
LTUR-2012
ALUMINUM HOUSING
05
Models and Dimensions
Mounting Options for LTU-2000
76mm
89mm
Nylon
Aluminum Aluminum
89mm
80mm
126mm
LTUM
48mm
28mm
56mm
ø38mm
Extended Necks for High Temperature
MT
50mm
Extended necks for medium (up to 100ºC) and high temperature (up to 120ºC)temperature
HT
100mm
Insertion Length
Standard
80mm
TC Standard
LTU
64mm
TC Standard
LTUM
80mm
130mm
130mm
Extended Length
L
118mm
Process Connections
Threaded Connections
3/4”
1”
1½”
2”
NPT
1,75
BSP
Tri-Clamp Connection
1½”
2”
2½”
3”
TC Connection
Rubber Seal
Process Connection
Flange Connections
1”
FF
1½”
2”
RF
2½”
ANSI 150#
ANSI 300#
06
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