( click here )

January 2005 : DustAlarm® • TrueCap® MK-2



Dust Collection

Elburn, IL. —Monitor Technologies announces their second generation DustAlarm“ broken bag detector, which uses reliable triboelectric technology to monitor dust emissions from bag houses and industrial dust collection systems. The DustAlarm broken bag detector is an economical solution for the detection of leaks and filter failures. The DustAlarm is compatible with a wide range of powders and bulk solids and can meet the needs of virtually any industry.

An electric signal is generated when dust particles collide with the stainless steel probe of the DustAlarm broken bag detector. The electronics provides an alarm output to indicate changes in filter condition. The DustAlarm broken bag detector protects blowers from damage by warning you when it is time to replace filters. The electronics include sensitivity, alarm level and time delay adjustments to prevent generation of false signals from normal operations.

A rugged NEMA 4 housing protects the DustAlarm broken bag detector electronics. Easy access is provided for all adjustments, and plug-in terminal blocks and cable glands simplify commissioning. A multi-colored LED is part of the electronics. It shortens set-up time, and provides local indication of an alarm condition. The DustAlarm broken bag detector is available with either integral or remote electronics. The remote electronics version is used for high temperature / vibration applications.

The DustAlarm broken bag detector can save you money by eliminating unscheduled down time for filter bag replacement. DustAlarm helps you comply with the Clean Air Act and other federal regulations by allowing dust to be reclaimed prior to being released to the environment.

For more information on the DustAlarm©, or any of Monitor’s full line of level, flow, particle emission or aeration products, contact: Emily Jones at 1-800-601-5953.

MK-2 Family
Universal Power Supply
for Smart Level Sensor

Elburn, IL. —Monitor Technologies announces the introduction of their second generation TrueCap® Model MK-2 RF capacitance point level sensor. Based upon nearly 20 years of experience in the design and application of RF capacitance technology, the second generation MK-2 point level sensor uses digital microcontroller technology and surface mount electronics to provide the highest degree of performance and reliability for dry/wet solids, liquids, viscous liquids and slurries.

The latest TrueCap Model MK-2 provides state-of-the-art features, including:
• A universal power supply compatible with 48-240 VAC/24-48 VDC
• An external LED for local status indication
• Automatic compensation for changes in product capacitance with varying temperature, for unmatched stability
• Simple push button calibration
• Build-up immunity for reliable performance with “sticky” solids, liquids and slurries
• Remote electronics option for high temperature / vibration applications

The TrueCap Model MK-2 provides adjustable sensitivity and can be set up to detect differences in capacitance as small as 0.5 picofarads. The MK-2 can be used on vessels containing multiple products by calibrating the sensor for the material with the lowest dielectric constant.

TrueCap MK-2 point level sensors are offered with a wide assortment of probe types and options. Over 100 different product configurations, including units for general purpose and hazardous locations, provide unequaled versatility. This minimizes your need to invest in multiple technologies to solve the various level measurement applications at your facility.

Monitor’s MK-2 is a “plug-in-place” instrument. Installation is simple, and requires no special tools or training. Push button calibration and sensitivity allows for quick start-up. A push button self test feature allows easy verification of sensor operation and calibration.

The TrueCap Model MK-2 is virtually maintenance free, and will operate for years without attention. TrueCap level sensors carry Monitor’s two-year warranty and are backed by our exclusive SecureCare customer service program.

For more information on the MK-2 RF capacitance proint level sensor, or any of Monitor’s full line of level, flow, particle emission or aeration products, contact: Emily Jones at 1-800-601-5953.

Spotlight: RF Capacitance Level Sensor
TrueCap Level SensorsTrueCap 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


Join Monitor's E-Mailing List!
Enter your Email Address Here:



© 2022 • Monitor Technologies, LLCAll Rights Reserved
Privacy / Cookies Policy & Terms
1.800.601.6319 or 1.630.365.9403

  Translate This Web Page:
Translate text and documents.