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TILT LEVEL SWITCHES - TC-1 and TC-3

Tilt Level Switches
TC-1
TC-3

Bulletin Button
Low Cost, High Level Detection
No Calibration
Minimal Maintenance

 

Tilt Switches

 

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.

.: Principle of Operation

.: Applications

.: Features

.: Available Configurations

.: Specifications

.: Warranty

.: Optional Accessories (TC-3)

   

 

 
Principle of Operation

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.

 

 
Applications
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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

Tilt SwitchTC-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.

 

 

Heavy Duty Tilt SwitchTC-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)

TC-3 Accessories

 

 
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.

 

 

DOC-000-633A Rev.8.07172009

 

 

 
TrueCap Level SensorTrueCap Light  
TrueCap® MK-2
Advanced RF Capacitance Level Probe
The TrueCap® Model MK-2 RF Capacitance point level probe is designed to provide a superior and stable sensitivity threshold making it suitable for a variety of powder / bulk solids and some liquid or slurry applications.

Advanced features of the Model MK-2 include:
> Automatic immunity to material build-up on the probe by its driven shield design
> Push-button calibration
> Enhanced temperature compensation
> Maximized reliability via smart sensing algorithms like “self-validating” fail-safe protection
> Visible status LED on ordinary location units
> Versatility through a variety of configuration options including: hazardous location version, split architecture design, quick-connect process connection, stub probe, cable extensions, solid extensions, Nylon® probes, Ryton® - equiv. probes, etc.

A practical application for the TrueCap would be to use this level sensor where a residual material build-up on a different sensor would cause a false material level indication.

Principle of Operation for the TrueCap RF Capacitance Level Probe:
The vessel wall and the active probe element establish an impedance reference between each other when exposed to air which has a dielectric constant of 1. When materials with a dielectric constant greater than 1 are in close proximity to the probe, the impedance of the sensing field between the sensor and the vessel wall will change. Once the amount of change exceeds a threshold that was electronically determined during the calibration process, an output relay will either be energized or de-energized depending upon the position of the fail-safe selector on the probe’s electronic circuit board. A change of as little as .5 pico-farad is all that is necessary for the probe to sense the presence of material.

Click here for more information on the TrueCap MK-2 Level Sensor or contact Monitor Technologies LLC at
Tel.: 800-766-6486 in the USA and
Tel.: 630-365-9403 worldwide.
 
>>Download TrueCap Product Bulletin #413
>>Click here to learn more about other Point Level Switches from Monitor Technologies

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