Monitor’s
line of tilt bin level switches are economical, trouble-free
point level controls available for detection of dry bulk materials.
The units can be used as high level indicators to eliminate
bin overflow or to control levels in open piles. In addition,
the tilt switches are useful in determining over or under-load
on conveyor belts. The simple yet efficient internal construction
(one moving part) provides indication when unit is tilted
at a 17° angle throughout the complete 360° of axial
arc. Each tilt switch includes a threaded bore for attaching
extension actuators which can increase sensing repeatability
and protect the tilt switch from direct contact with coarse
material. Monitor offers two different models of tilt switches,
each suited to satisfy different application requirements.
A tilt
switch provides indication by detecting the angular position
of the tilt switch enclosure. Typically the unit is suspended
above the material to be sensed. Internally, a steel ball
centers itself over a switch resulting in switch actuation.
As rising material contacts the tilt switch (or the extension
actuator) the enclosure begins to tilt. When the enclosure
body is tilted at 17°, the steel ball rolls off center,
deactivating the switch. As material falls away from the
switch enclosure body (or the extension actuator) and the
unit becomes upright, the ball returns to its original centered
position, once again causing switch actuation. The change
in the internal switch status is user accessible for signaling
alarms, lights, or interfacing with a PLC.
Monitor’s
tilt switches can be used in a variety of applications and
with many different types of materials. The TC-3 can be
used with materials 15-60 lb/ft³ (240-960 kg/m³ ), while
the TC-1 can be used with materials >45 lb/ft³ (>720
kg/m³ ).
Typical Applications include, but
are not limited to:
Feed
Calcium Dust
Pellets
Wood
Limestone
Metals
Regrind
Rocks
Clays
Resin
Rubber
Malt
Silica Sand
Pre-mix
Features
Passive
switch for activating loads up to 250 VAC
Cast
iron or cast aluminum construction
Easy
installation
Adjustable
measurement height
Ball-float
and paddle-type actuators available
Available Configurations
TC-3 - Monitor’s model TC-3 is a light-duty tilt switch
constructed from cast aluminum. It is ideally suited
for applications where relatively light weight, moderately
sized materials are handled (i.e. 15-60lb/ft³ ; 240-960kg/m³
or particle sizes less than 2in; 50mm). Typical application
materials include feed, plastic pellets and pet food.
TC-1 - Monitor’s model TC-1 is a heavy-duty, weather-proof
tilt switch constructed from cast iron. It is ideally
suited for applications where heavy coarse materials
are handled (i.e. >45lb/ft³ ; >720kg/m³ or
particle sizes exceeding 2in; 50mm). Typical application
materials include coal, ore, rock, aggregate, and sand.
Optional
Accessories (TC-3)
Specifications
Model
TC-3:
Power
Requirements:
None
Output:
SPDT,
10A @ 250 VAC max
Sensitivity:
17° from
vertical axis
Enclosure:
cast
aluminum, unpainted
Enclosure
Protection:
NEMA
4, IP56
Mounting
Connection:
Eyebolt,
3/4" (19mm) I.D.
Wire
Entry:
3/8" NPT
cord connector, cord diameter 0.25 to 0.38in
(6.4 to 9.6mm)
Op.
Temp.:
-40° to
175°F (-40° to 79° C)
Weight:
3
lbs. (1.35 kg)
Approvals:
CE marking (Ordinary
Locations Only)
Model TC-1:
Power Requirements:
None
Output:
SPDT, 15A @ 250 VAC max
Sensitivity:
17° from vertical axis
Enclosure:
cast iron, painted beige
Enclosure Protection:
NEMA 4, IP56
Mounting Connection:
Eyebolt, 1-3/32" (27.7mm) I.D.
Wire Entry:
1/2" NPT cord connector, cord diameter
0.25 to 0.38in (6.4 to 9.6mm)
Op. Temp.:
-40° to 250°F (-40° to 121° C)
Weight:
24 lbs. (11.25 kg)
Approvals:
CE Marking
Warranty
Monitor
Technologies warrants each tilt switch it manufactures to
be free from defects in material and workmanship under normal
use and service within two (2) years from the date of purchase.
The purchaser must give notify Monitor of any defects within
the warranty period, return the product intact, and prepay
transportation charges. The obligation of Monitor Technologies
LLC under this warranty is limited to repair or replacement
at its factory. This warranty does not apply to any product
which is repaired or altered outside of Monitor Technologies'
factory, or which has been subject to misuse, negligence,
accident, incorrect wiring by others, or improper installation.
The
SafePoint® rotary paddle level switch with a self-validating design
detects material presence plus continuously monitors its own ability
to function. The analysis includes sensor health and system power
failure, which makes the SafePoint truly fail-safe.
The SafePoint incorporates patented use of Hall-Effect technology,
dual outputs to indicate both material presence and unit health,
and microcontroller technology to continuously protect bulk solids
processing and storage from the consequences of unknown sensor
failure by providing immediate indication of a sensor failure
and confirmation of proper operation.
Other practical features of the SafePoint include rugged construction,
motor shut-off when paddle becomes impeded to maximize motor life, twist On/Off
cover for bolt free removal, and local status indicating light (except hazardous
location models)
A practical application for the SafePoint would be to use this "true"
fail-safe product if undetected sensor failure could result in a
catastrophic process problem.
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