Dwyer LTS - Manual

The Series LTS Tilt Switch Probes are able to sense either the presence or ab-
sence of material when other sensors won’t work due to bin vibration, or actual
walls aren’t available for mounting other types of measuring units. The probes are
designed for use where the bulk material to be sensed is exposed or open. Typical
applications include high or low level detection in large hoppers, silos, crushers, or
trippers; high level control under stackers, and detection of plugged conditions at
conveyor transfer points. Series LTS probes can also be used to detect the pres-
ence or absence of bulk material on belt conveyors, on chutes to indicate product
flow, and to aid in loading rail cars or trucks.
Tilt Switch Probes are available containing either a SPST, normally closed or non-
mercury switch. All probe models are airtight, dust tight, and waterproof. Series
LTS probes feature a probe activation angle of 25° from vertical. The units come
in a standard heavy-duty model as well as a compact model. The compact probe
should be used for applications involving small bins and hoppers where space is
limited, while the heavy duty probe should be used for applications where a heavy
duty abrasion-resistant probe is necessary.
INSTALLATION INSTRUCTIONS
PROBE INSTALLATION
The probe should be suspended using a fixed support, such as a mounting brack-
et or S-hook, at a position where it will easily intercept the bulk material at the
desired indication point. There must be a free flow of material both to and away
from the probe. In some installations, it is necessary to install a baffle or shield
above the probe assembly to protect it from product surges.
Figure 2: Typical Applications
Series LTS Tilt Switch Probe
Specifications - Installation and Operating Instructions
Bulletin L-30
SPECIFICATIONS
Service: Powder and bulk.
Temperature Limit: -40 to 150°F (-40 to 66°C).
Switch Type: SPST, normally closed.
Electrical Rating: 0.25 A max, 60 V max, 3 VA max.
Electrical Connection: 16-3 type SO connection cable.
Cable Length: 25 ft (7.6 m) unless otherwise specified.
Probe Length: Standard: 9˝ (23 cm); Compact: 6˝ (15 cm).
Signal Voltage: 15 VDC.
Actuation Angle: 25° from vertical.
Material: Steel or 302/304 SS.
Switch Surrounding: Epoxy encapsulated.
Mounting Orientation: Vertical.
Weight: Standard: 4.75 lbs (2.15 kg); Compact: 2.5 lbs (1.13 kg).
Features: Fittings for hangers.
Agency Approvals: Meets NEMA 4.
WIRING
All wiring should be in compliance with applicable Local, Federal, and State codes.
Probe connection cable is 16-3 type SO and is attached to the probe. Probe cable
length is supplied as specified per order, and may be spliced.
MAINTENANCE
The Series LTS Tilt Switch Probes are not field serviceable and should be returned
if repair is needed (field repair should not be attempted and may void warranty).
Be sure to include a brief description of the problem plus any relevant application
notes. Contact customer service to receive a return goods authorization number
before shipping.
PROXIMITY CONTROLS
Phone: 219/879-8000 www.dwyer-inst.com
A DIVISION OF DWYER INSTRUMENTS, INC. Fax: 219/872-9057 e-mail: [email protected]
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Model
LTS-N11G-025
LTS-N21G-025
LTS-N12G-025
LTS-N22G-025 Probe Size “C”
9˝ Steel
6˝ Steel
9˝ SS
6˝ SS “A”
16-3 SO Cable
16-3 SO Cable
16-3 SO Cable
16-3 SO Cable “B”
1-7/8 [47.63]
1-7/16 [36.51]
1-7/8 [47.63]
1-7/16 [36.51]
©Copyright 2014 Dwyer Instruments, Inc. Printed in U.S.A. 5/14 FR# R6-443489-10 Rev. 2
Cable Length
25 ft
25 ft
25 ft
25 ft Electrical Connection
Standard: 16-3 type SO Connection Cable
Standard: 16-3 type SO Connection Cable
Standard: 16-3 type SO Connection Cable
Standard: 16-3 type SO Connection Cable Model
LTS-N11G-025
LTS-N21G-025
LTS-N12G-025
LTS-N22G-025 Size
Standard
Compact
Standard
Compact Probe Material
Steel
Steel
Stainless Steel
Stainless Steel Switch Material
Non-mercury
Non-mercury
Non-mercury
Non-mercury
Consult factory for custom cable lengths.
B
A
SEE PROBE
SIZE C