German PTL vibrating level switch: bulk solid level control instrument
Since many years already PTL Hermann is specialized in the development and production of vibrating level switches for bulk solids.
For many years, PTL has been establishedHermann from a German company is a manufacturer and seller of bulk solid vibration level switches.
These products are used for detecting the presence or absence of powdered or granular material that is stored in all kinds of silos, hoppers and containers.
These products can be used for storage in various silos, hoppers, and container inspections​​The presence or shortage of powdery or granular substances.
Special models for interface detection are available, eg to detect sand that has settled in water.
Special models are available for selection, such as for water and sand interface detection.
product overview
The unique, patented single rod designs of our instruments make them work perfectly and reliably even at critical applications where conventional products cause problems due to bridge building, material build-up or rat holing.
Product Overview
Main models: CV210、 CV310、 CV410, CV510, CV600, CV660, etc LevelSwitchSTOCKTROL
Principle of Operation
Operating principle
A mechanical vibrating system gets forced to vibrate on its resonance frequency by means of piezo electric crystals.The method of forcing a piezoelectric crystal to vibrate at its resonant frequency in a mechanical vibration system. When the vibrating blade gets covered by the material to be detected the vibration stops.When the vibration of the material covered by the vibrating blade is detected, the vibration stops. This is sensed by an electronic circuit which forces a binary output to switch.This is caused by electronic circuits, which force binary output switching detection. When the blade gets over the vibration restarts and the output switches back.

	Level meter Vibrating level switch for all kinds of powdered and granular solids. Various powdered and granular solid vibration level switches. Applicable for heavy materials like cement as well as for light materials with densities down to 20 grams/litre. Suitable for heavy materials such as cement, as well as lightweight materials with a density reduced to 20G/L. Grain size from powder to max.40mm. From the grain size of powder ** 40 millimeters in size.
	STOCKTROL Vibrating level switch for all kinds of powdered and granular solids. Various powdered and granular solid vibration level switches. For heavy materials as well as for extremly light materials like styrofoam with densities even down to 10 grams/litre. Heavy materials, as well as extremely lightweight materials with densities as low as 10%, such as foam rubber materialsG/L. Grain size from powder to max.20mm. From the grain size of powder ** The large particle size is 20mm.
	CV600 CV600 Low-Cost vibrating level switches for grained and granular solids with minimum densities of 20 grams/litre (CV660: 50 grams/litre) and max.Low cost vibration level of 20Ke/Low density particles and granular solids switch (CV660:50 g/L) and high value. Grain sizes of 10mm
	SHT Hough Transform Vibrating level switch for powdered and granular solids with high process temperatures up to 250°C High vibration level, process temperature for powder and granular solid switches can reach up to 250°Cbetween

Advantagesadvantage
The vibration technique has got many advantages over alternative level sensing technologies.
The replacement of remote sensing technology with vibration technology has brought many benefits.

• unaffected by environmental changes eg temperature, pressure, humidity
  Not affected by environmental changes such as temperature, pressure, and humidity
• unaffected by material changes
  Not subject to significant changes
• unaffected by dust clouds and agitation
  Not swayed by dust clouds and agitation
• maximum versatility
  *Large multifunctionality
• no calibration required
  No calibration required
• no maintenance required: the vibration has a self cleaning effect
  No maintenance required: vibration has self-cleaning effect
• highest performance and durability: no moving parts, no wear-out
  *High performance and durability: no moving parts, no wear and tear,

Furthermore the PTL products offer the following advantages
In addition, PTLThe product has the following advantages

• highest sensitivity: even extremely light materials like styrofoam with densities down to 10 grams per litre and lower can be detected
  *High sensitivity: Density drops to 10The weight per liter is reduced or even extremely light, as detectable as foam material
• the unique, patented single rod designs with its specifically shaped vibrating blades prevent false signalling caused by material build-up, bridging and rat-holing.
  The unique and patented single rod design of its solid vibrating blade prevents false signals caused by material accumulation and bridging

German PTL vibration rod level switch mini CV660

CV660Vibration level switch is used to monitor the level of free flowing solid materials, especially granular materials, in silos and storage tanks. CV660It's CV600One of the low-cost models in the series. 24V DC power supply and one transistor output. Compared to other measurement methods, the absolute advantage of the vibrating rod level switch is:
-Not affected by the type of material
-High reliability: not affected by environmental conditions, such as changes in measurement methods such as temperature, pressure, and humidity.
-No maintenance required
-No moving parts, no wear and tear, long lifespan, simple operation
-Easy to install, only four terminals are needed.
-No calibration required,¾High quality standards
-Stainless steel probe and casing
-high performance-price ratio
Electronic excitation CV660The vibrating rod vibrates, with a resonance frequency of approximately 460Hertz. If there is material covering the vibrating rod, it will dampen the vibration of the vibrating rod, and the damping will become an electronic signal output. When the vibrating rod is exposed as the material level decreases, it begins to vibrate again and the output switches back. The vibration has the function of automatically cleaning the vibration rod.

Probe: Stainless steel 1.4301/AISI304
Resonance frequency is about 460hertz
Connection method:Threaded connection 1“DIN2999Or 1 "NPT
Power Supply: 24V DC±10％
Output:Optoelectronic isolation transistor output
NPNOr PNP,Determine based on wiring
350@24V DCShort term * Large 1A
*High power consumption of 20W
Voltage drop of 3V
Reverse * high current 100μA
Anti short circuit
power waste: <1 W(Blocked from transistor)
Time delay:After attenuation, 1In seconds,2 to 5 seconds after starting the vibration
Display:Output: Red LEDconnector
Vibration rod end * high load force: 80 N
High pressure inside the container: 10 bar
Environmental temperature:- 20°C ... + 60°C
Process temperature:- 20°C ... + 70°C
Protection level: IP65 cable entry suitable for cables∅Diameter 4.5... 7.0Millimeters, * large. 1.5 mm²of
CE Qualified: - EU EMC Directive 2004/108/EC
-EU Low Voltage Directive 2006/95/EC

Application scope:
Dry, free flowing bulk solid material (granules) with a small density of 50Ke/Ascend, with a large grain size of 10mm.