Yokogawa has more than 45 years' experience in the development, design, and manufacture of pressure sensors and pressure transmitters. The DPharp series of digital pressure transmitters use a differential pressure high accuracy resonance (DPharp) sensor that represents one of the most revolutionary advances in transmitter technology.
Also, we have wide line-ups of Radar, Guided Wave Radar, Ultrasonic to Level Transmitter. These sensors can be adapted to all applications of level measurements by appropriate selections.
The new DPharp EJX transmitters are the latest addition to the DPharp family's EJA series. DPharp EJX transmitters employ a next-generation multi-sensing technology that provides virtually the highest level of performance and precision in the market.
In continuous non-contact level measurement with radar, the sensor sends microwave signals towards the medium from above. The surface of the medium reflects the signals back in the direction of the sensor. Using the received microwave signals, the sensor determines the distance to the product surface and calculates the level from it. Liquids and solids are commonly measured with this measuring technique.
This non-contact level measurement is not influenced by temperature, pressure or product properties.
In this type of radar level measurement, microwave pulses are conducted along a cable or rod probe and reflected by the product surface. The measuring probe of the TDR sensor ensures that the signal reaches the medium undisturbed. Liquids, solids and separation layers (interfaces) in liquids are commonly measured with this measuring technique.
The TDR sensors measure reliably even with:
In non-contact ultrasonic level measurement, the sensor emits ultrasonic pulses in the direction of the medium, which then reflects them back.
The elapsed time from emission to reception of the signals is proportional to the level in the tank. Level sensors based on this measuring principle are ideal for simple standard applications, especially for liquids.
This non-contact ultrasonic sensors operate independently of product properties and even penetrate dusty atmospheres.
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