Introducing the Anderson LN Potentiometric Level Transmitter

October 22, 2013
LN Potentiometric Level

LN Potentiometric Level Transmitter

The Anderson LN Level Transmitter uses potentiometric technology to provide accurate reliable measurement in difficult environments.  Anderson’s dual diaphragm hydrostatic technology provides proven accuracy and reliability in atmospheric inventory tanks, applications such as filter bowls and other shallow vessels, as well as, environments with wide temperature swings can prove challenging for pressure based level systems.  While utilizing potentiometric technology, the LN level transmitter is able to excel in these traditionally difficult applications.  The LN samples interior level at ten times per second allowing accurate readings while filling and dispensing product.

The stainless steel enclosure is also built to withstand the rigors of harsh environments.  Resistance to vibration and moisture from wash down is handled with typical Anderson rugged construction.  The water tight connections round out this dependable design.  As with all Anderson level transmitters. The LN meets FDA methods and 3A third party verification standards and is backed by a one-year warranty.

-Exceptional long term stability
-Unaffected by temperature changes
-No moving parts for reliability and CIP
-Rugged construction with potted electronics
-Stainless Steel housing rated of NEMA 4X and IP-67 for exceptional wash-down protection
-3-A compliant, Third party verified
-Standard lengths from 8”-80,” suitable for both metallic and nonmetallic vessels

The Anderson LN level transmitter utilizes potentiometric technology.  Potentiometric level measurement consists of applying voltage to a metallic conduction probe.  The medium in the tank acts as a potentiometric slider and receives partial voltage from the probe that is measured on the wall of the tank for single probe models are measured from reference probe or dual probe models.  The measured partial voltage is proportional to the voltage on the probe and produces the value for the relative level.  This measurement is generally independent of the conductivity of the medium.  Only a conductivity of at least 1uS/cm must be present homogeneously throughout the medium for an accurate reading.

Significant advantage is realized over more conventional capacitance technology as varying media dielectric constants and low conductivity will not affect the measurement produced.  Various products will be measured accurately without the need to recalibrate the sensor or to adjust between product batches with fixed constants to the monitor or PLC.  Only true media level is measure.  Coatings from viscous materials are disregarded making this technology ideal for yogurt, heavy syrups and pastes.

-Accommodates lower conductivity fluids such as liquid sugars
-Exceptional for viscous products such as pastes
-Pressurized filler bowls
-Small pressurized tanks found in breweries
-Small vessels

Holland Applied Technologies