E+H ultrasonic level gauge FTM20-4N45A available now.

Brand

E+H/Endeshaus (Germany)

Price Range

Negotiable

Origin

Imported

Applications

Chemical, Petroleum, Energy, Electrical, General

The E+H ultrasonic level gauge is a microprocessor-controlled digital level instrument. During measurement, ultrasonic pulses are emitted by a sensor (transducer). The sound waves are reflected by the liquid surface and received by the same sensor, converted into electrical signals by a piezoelectric crystal, and the distance from the sensor to the measured liquid surface is calculated from the time between the emission and reception of the sound waves. Because it uses non-contact measurement, the measured medium is virtually unlimited, and it can be widely used for measuring the height of various liquids and solid materials.

Integrated Tuning Fork Limit Switch for Solid Bulk Materials

Order Number:

FTM20-4N45A

Product Details

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Process Temperature

-40...150 °C

(-40...300 °F)

Process Pressure (Absolute)/Maximum Overpressure Limit

Vacuum...25 bar

(Vacuum...360 psi)

Minimum Medium Density

200 g/l

E+H Ultrasonic Level Gauge Field Conditions

Caution should be exercised in any of the following situations:

Foaming liquids/solids

Strong voltage, strong current, strong electromagnetic interference (avoid high voltage, high current, and strong electromagnetic interference as much as possible)

Strong winds and direct sunlight

Strong vibration

Highly volatile liquids and environments with large amounts of water vapor

Easily crystallizing liquids

Use with caution in the above field environments, as the accuracy of the measurement will decrease and the data may be unstable. Generally, it is not recommended to use ultrasonic level gauges.

E+H Ultrasonic Level Gauge Product Features

Automatic power adjustment, gain control, temperature compensation. Physically sealed probe with IP68 protection rating, preventing water ingress and extending service life.

Special echo processing technology facilitates troubleshooting in case of on-site malfunctions, simplifying maintenance.

Interference echo suppression ensures accurate measurement data and strong anti-interference capabilities.

Multiple output options: programmable relay output, high-precision 4-20mA current output, RS-485, RS-232 digital communication output, wireless GPRS output, etc.

Low price, small size, and light weight; suitable for non-contact level measurement of liquids and bulk solids in industries such as food, chemical, and semiconductor manufacturing; also applicable for remote level monitoring and pump control.

E+H Ultrasonic Level Gauge

E+H Ultrasonic Level Gauge Working Principle

The ultrasonic level gauge works by emitting high-frequency pulsed sound waves from an ultrasonic transducer (probe). These waves are reflected off the surface of the material being measured, and the reflected echoes are received by the transducer and converted into electrical signals. The propagation time of the sound wave is directly proportional to the distance from the emitted wave to the surface of the object. The relationship between the sound wave propagation distance S, the speed of sound C, and the sound propagation time T can be expressed by the formula: S = C × T / 2.

Because the emitted ultrasonic pulse has a certain width, reflected waves in a small area close to the transducer overlap with the emitted wave and cannot be identified, making it impossible to measure the distance. This area is called the measurement blind zone. The size of the blind zone depends on the model of the ultrasonic level gauge.

The probe emits ultrasonic waves. When these waves encounter a medium with a density significantly different from air, they are reflected. The reflected waves are then received by the probe. The distance from the probe to the liquid (object) surface is proportional to the time taken for the ultrasonic wave to travel:

Distance [m] = Time × Speed ​​of Sound / 2 [m]

Temperature compensation formula for the speed of sound: Ambient speed of sound = 331.5 + 0.6 × Temperature

The E+H ultrasonic level gauge works by emitting energy waves (usually pulse signals) through a device. These energy waves are reflected when they encounter obstacles, and the reflected signals are received by a receiving device. The change in liquid (object) level is determined by measuring the time difference in the energy wave's movement. Electronic devices process the microwave signals, ultimately converting them into electrical signals related to the liquid level. The probe emits an ultrasonic pulse signal to the surface of the measured medium. During transmission, the ultrasonic wave is reflected after encountering the measured medium (obstacle). The reflected ultrasonic signal is detected by an electronic module and processed by software. By analyzing the time difference between the emitted and echoed ultrasonic waves, combined with the speed of sound, the path traveled by the ultrasonic wave can be calculated, thus reflecting the liquid level. E+H FMU40-ANG2A2

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PMD230-KH1B2ED1A E+H The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, Vickers, Helón (Norgren)

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi