4 to 20mA DC 24v Ultrasonic Liquid Level Meter IP68 Ultrasound Particulate Monitor For Petrochemical Hydrology Sewage Concrete

4-20mA Output

Ultrasound Water Level Measurement

Ultrasonic Material Position Detecting

Ultrasonic Solid Powder Height Monitoring

Ultrasonic Commercial Concrete Pile Height Measuring

5 to 60 Meter Range

24VDC Power Supply

IP68 Ultrasonic Transducer (Probe)

Debugging

Due to the different installation environment of instrument, so before ultrasonic level meter works we must know the basic situation of the required measure, such as measurement range, zero point, full scale and scene working condition.

Technical Parameter:

Power Consumption

Wiring Diagram: 

● Prompt: make sure the connecting cable between the probe and meter body of separate-type ultrasonic level meter is long enough in advance. Connection with other cable for extension on site is not allowed as it will affect the signal transmission quality and strength.

◆ Enhanced integrated type with four-wire system

 Electric Wiring Diagram of Enhanced Integrated Type with Four-wire System:

24VDC Power Supply Wiring Diagram of Four-wire System:

220VAC Power Supply Wiring Diagram of Four-wire System

Installation Guide
It is important for the users to understand the below terminologys before the installation operation:

1: Measuring range: the meaning of measuring range is very important for meter type selection. Please refer to the diagrams below:

2: Emitting angle and false echo:

Ultrasonic wave beam is gathered by the probe. The emitting of impulse wave beam is like the light beam of flashlight. The further it is from the probe, the greater the diffusion area is.

Any objects within the range of emitting angle, such as pipe, support, weld joint, reinforcing rib, mixing propeller and hanging object, will lead to strong false echo, specially the objects within the range of emitting angle which are near the probe.

For example, the false echo caused by the pipe at 6m from the probe is 9 times stronger than that caused by the same pipe at 18m from the probe.

★Try every effort to make the sensor axis perpendicular to the medium surface and avoid any other object within the range of emitting angle, such as pipe and support.

Typical Wrong Installation (only examples):

Sizes of Integrated Ultrasonic Water/Material Level Meter

Installation of thread at the bottom:

★After probe installation, the probe emission surface must be exposed from the cover plate or waveguide and it shall not be in the cover plate or waveguide.

For open container, the support shall be used for installation. The bearing capacity of support shall be noted and certain distance shall be kept between the sensor and container wall. If the upper part and lower part of the open container or stock bin inner wall are flat and free of hanging objects and any other objects, the distance between the sensor and container wall is detailed as follows:

Installation on open container – with top against the support at one side:

As the open container has no focusing effect, the sensor can be installed in the middle of the container.

Draining well and common well Installation:

Normally, the wellhole and wellhead of drainage well are narrow and the well wall is uneven, which makes it difficult to conduct ultrasonic measurement. This can be solved by installing a section of connecting pipe or a whole measuring casing. Attention shall be paid to the fact that the blind area will be enlarged for about 50~100% after the sensor is put into the connecting pipe. So the factors for blind area expansion shall be considered.

Thus, when the connecting pipe is used, if the original probe blind area is 0.50m, it will be enlarged to 1.00m after the probe is put into the connecting pipe.

● For common well (including water source well and deep well), normally the diameter is small and the best measuring effect can be reached by installing measuring casing. The inner wall of measuring casing must be smooth (PVC and PE pipe can be used) and the inside diameter shall be ≥150mm (measuring range within 4m). The manufacturer shall be contacted for connecting pipe longer than 4m. The measurement can be carried out as long as the measuring casing is clean and free of attached medium and internal joint.

The measuring casing shall be soaked in the medium all the time, which can ensure the accurate measurement within the measuring casing.

Doorframe installation for solid measurement:

Doorframe installation can be applied for the open container and the axis of connecting pipe must be aligned to the container opening or perpendicular to the medium surface.

During installation for material piles in the open air, several meters are required for the measurement of large material pile in the open air. The meters can be fixed on the hoist frame and sensor probe shall be aligned to the medium surface.

Flange installation of  Solid Measurement:

Similar to liquid medium measurement, the meter can be installed on the counter flange of container connecting pipe. The solid reflecting surface is different from that of the liquid and it is not a plane, which shall be considered during installation. The probe emitting surface shall be perpendicular to the surface of solid to be measured and the probe shall be exposed from the connecting pipe.

At the solid measurement site, in most cases, probe inside the connecting pipe will lead to pulsating of measured data or “wave loss”.

To solve the problem, the universal flange can be used. In this case, the probe emitting surface can easily be aligned to the reflecting surface of the solid to be measured merely by rotating the flange.

Take Separate-type sensor installed on container flange as example:

Application Examples

Liquid level and material level measurement is a common problem in industry. Ultrasonic position measurement technology has many advantages. It can not only measure position at fixed point and continuously, but also provide signals needed for telemetry or remote control. Compared with radioactive positioning technology, ultrasonic technology does not need protection. Compared with laser ranging technology, it has the advantages of simple and economic. At the same time, ultrasonic technology generally does not require moving parts, so it is relatively convenient in installation and maintenance. Ultrasonic level meter can be widely used in petroleum, mining, power plant, chemical plant, water treatment plant, sewage treatment station, agricultural water, environmental protection monitoring, food ( brewing industry, beverage industry, additives, edible oil, dairy products ), flood control, hydrological monitoring, open channel, spatial positioning and many other industries.