This rotary paddle bin level indicator is being used for low level control in an aggregate bin of a concrete batch plant. The aggregate material is stored outside and frequently is wet. The aggregate material comes direct from the quarry and usually includes quite a bit of clay. The aggregate/clay mixture coats the enclosure.
This unit uses an extended design and air purge to allow for mounting in applications where the internal bin temperature can be as high as 750 degrees F (399 degrees C).
This is an image of a rotary paddle bin level indicator being used in a local co-op elevator to detect the presence and absence of grain, specially high level for corn. Rotary paddle technology is ideal for this type of application. The unit is side mounted using a bolted-in 1-1/4" half-coupling.
This vibrating point level sensor can detect the presence of material as light as 3.12 pounds-per-cubic-foot. The unit is completely solid state and can be used to detect dry free-flowing materials in high or low level applications. It incorporates a universal power supply, relay outputs, two conduit entrances, stainless steel probe construction, is reasonably priced and offers standard, pipe extended and cable extended probe options.
These devices are single action high level monitors for open piles or for high level monitoring in silos. No power is required for operation and , unlike other types and brands, the Models TC3 and TC1 do not use mercury tilt switches for actuation.
RF capacitance is a proven technique for point level sensing of powders, granular, liquid and slurry materials. The TrueCap family consists of two models, the MK2e and MK2, and provide a variety of probe options to meet virtually every need.
The Model MK2 is the leading state-of-the-art device using microcontroller technology, internal temperature sensing and automatic build-up immunity to provide the highest degree of performance and reliability. It requires only the push of a button to calibrate automatically after installation.
The Model MK2e has similar characteristics to the MK2 but uses standard electronics. It is lower in cost but similar in performance and capability. It is designed for OEM's and more cost-minded users.
The most reliable TRUE fail-safe point level sensor available is self-validating and uses patented Hall-effect sensing to ensure reliability with even the finest and dustiest of powders. This level sensor is truely the ONLY sensor to use for applications where proper operation must be maintained and self-validating feedback on sensor health provided to ensure prompt repair or maintenance if ever required.
These proximity switches are capacitive style switches that operate similarly to the TrueCap line of RF capacitance point level sensors. The Model PAC is an AC switch and the PDC is a DC switch. Both are used to detect the presence of material, typically dry and free-flowing powder and bulk solids. They are very compact and low in cost.
The Model G/GX/GX-SS diaphragm switches are used to detect the presence and absence of dry and free-flowing materials. These unit are essentially non-invasive and low-profile. They do not require any power and provide a switch output with high ampere capability. The diaphragm switch easily mounts from outside the vessel and can be maintained usually without removal. They are also relatively low cost.
Self-validation is not a term you commonly hear in regards to point level sensors, but this class of sensor does just that. It continuously monitors it's own operation and will change the state of a relay if some aspect of its operation fails. This relay is not the same as the relay used to sense the presence or absence of material, rather it is a detected output indicate sensor health. A failure can be any internal electrical or mechanical failure that would cause the sensor not to be able to perform its primary function of level indication.