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Latest update: 16.01.2018
KOBOLD Messring GmbH
TEL: +49 (0) 6192 299 0
FAX: +49 (0) 6192 233 98
Nordring 22-24
D-65719   Hofheim am Taunus
Products, services
Level, Flow, Pressure,
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Products, services
Level -
Flow -
Pressure -


Reliable Bulk Monitoring with Rotating Vane Switch
Reliable Bulk Monitoring with Rotating Vane Switch
The proven rotating vane level switches model NIR-9 from KOBOLD are also available with an ATEX- compliant version with immediate effect. This means that the devices can also be used in dust hazardous areas (zone 21/22) for level monitoring of bulk goods e.g. in chemical, forage and food industry or plastics processing. A synchronous motor drives a shaft at which a rotating vane is fastened at the lower end. When this rotating vane is decelerated or stopped by bulk solid, the engine moves over the pivoted gear from one end position to the other and thereby switches two micro switches, one shutting down the engine and the other providing an alert signal for display of limit level. When the level decreases, rotating vanes are released again and the motor is pulled into its primary position by the force of a spring. Thereby the motor is switched on again and working contact is switched back. The mechanical connection is via flange or screw connection without any problem.
30.08.2013  |  11421x  |  Product news  | 
Precise Radar Control
Precise Radar Control
TDR, also known as guided Microwave or guided Radar) and offers an excellent alternative to conventional level measurements. The NGM enables precise and reliable continuous level measurement and point level detection in almost all liquids and bulk materials. This innovative device has almost no installation restrictions - it can be mounted in small tanks, tall and narrow nozzles and it measures precisely even with difficult tank geometries or close to interfering structures. NGM uses TDR Technology: low-energy, high frequency electromagnetic impulses, generated by the sensor´s circuitry, are propagated along the probe which is immersed in the liquid to be measured. When these impulses hit the surface of the liquid, part of the impulse energy is reflected back up the probe to the circuitry which then calculates the fluid level from the time difference between the impulses sent and the impulses reflected. The sensor can output the analysed level as a continuous measurement
27.06.2013  |  10903x  |  Product news  | 
Level monitor with resonance
Level monitor with resonance
The type NVI level monitors especially designed for use in powdery to fine-grained and granular bulk solids work on the vibrating fork principle and are practically free of maintenance and abrasion. The devices are particularly durable due to the lack of moving parts. The formation of deposits is mostly impossible because of its single rod shape. The rod is self-cleaning in principle as the vibrations shake off the medium from the rod. A mechanical system is brought into resonance by an electronic circuit. When a medium covers the probe, this vibration is muffled. This change in the resonant frequency is converted into a switching signal by an electronic system. The evaluation electronics are well protected within the robust aluminium connection housing with protection class IP 67. It registers the change in vibration and displays this on an LED display. An additional relay output is used to transmit signals. Depending on the material density, settings for the operation
03.06.2013  |  10408x  |  Product news  | 
Diaphragm level indicator for bulk solids
Diaphragm level indicator for bulk solids
KOBOLD diaphragm level indicators are used to monitor the fill level of almost any powdered, granular or crystalline bulk solids. When the desired fill level is reached, the pressure of the bulk material on the diaphragm activates a micro-switch with toggle function, which can be used as a normally open or normally closed contact at an operating voltage of 220 V and a maximum of 15 A. The corrosion-resistant diaphragm is contained in light metal housing with a flange ring, allowing it to be easily screwed into existing flange connectors. A built-in spiral spring provides the necessary initial tension for the diaphragm. A variety of spiral springs or diaphragms are used depending on the specific weight and structure of the bulk material. The built-in ordinary spring activates at a control pressure of just 0.2 - 0.5 kg. The range of standard diaphragms includes NBR diaphragms (0.5 mm or 1 mm thick) for predominantly powdered materials with a low specific weight such
23.04.2013  |  12755x  |  Product news  | 
Against Overfilling Capacitive Level Limit Switch for bulks
Against Overfilling
Capacitive Level Limit Switch for bulks Capacitive liquid level monitors type NSC of KOBOLD Messring GmbH, Hofheim, offer protection against overfilling of bulk solids. Monitoring of minimum level is also possible at low levels and with light media with low medium density. Different solids e.g. cement, sand, flint or also animal feed can be monitored. The tested measuring system is based on properties of a capacitor. Hereby the level monitor metallic electrode and metallic tank wall assume the tasks of condenser plates. When room between these two plates is filled by a medium, voltage potential changes. Voltage change (very reliably) signalises excess and undercut of limit value. Switching point is determined by position of probe head. Two different device versions enable optimum positioning of the probe head in respective applications. Probe length can be individually chosen corresponding to respective maximum level switching point.With PTFE-coated rigid probe, the model NSC-R. Thereby a maximum of
03.04.2013  |  10786x  |  Product news  | 
Vibrating limit level detection
Vibrating limit level detection
NSV type level monitors of KOBOLD Messring GmbH, Hofheim, are almost free of maintenance and abrasion, because they operate without mechanically moving parts. The devices especially designed for use in powdery and fine-grained bulk solids work according to vibrating fork principle. Thereby a fork especially optimised for use in bulk solids is continuously put into vibration. When it is covered by a medium, the vibration behaviour changes. Mountable evaluation electronics are well protected at upper device ending in a protection class IP 65 plastic terminal box. It detects vibration change and displays it using a red LED. An additional relay output is provided for signal transmission. The rugged limit level detectors of stainless steel have compact construction and high insensitivity against material humidity. They don’t need calibration and are suitable for solids with low mean density. Mounting is possible from the top and from the side so that devices are not
07.03.2013  |  10612x  |  Product news  | 
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