ZRN703 integrated ultrasonic level meter

ZRN703 integrated ultrasonic level meter
 

Product description:

ZRN703 series ultrasonic level meter is an intelligent non-contact liquid (material) level measuring instruments. Products with an adjustable transmission power, the whole range of gain control, automatic temperature compensation function, and the use of original detection and calculation method that can identifying false signals, so as to effectively remove all kinds of interference signals due to the use of original detection and calculation method fundamentally enhance the measurement accuracy of the data series and the stability of the products can be widely used in a variety of liquids and solids level measurement, but also it can be used for ranging use.
Installation diagram

ZRN703 Ultrasonic level meter Technical Principle
Ultrasonic level meter is installed in the upper container under the control of the electronic unit, the probe emits a ultrasonic pulse to the object.
Sound waves reflected by the object surface, part of the reflected echo received by the probe and converted to an electric signal. Transmitted from the ultrasonic wave to be received is re-
For a time proportional to the distance to the probe of the measured object. Electronic unit detects the time, and calculates the measured distance based on the known speed of sound.
It can be obtained by subtraction level value. Since the temperature has an effect on the speed of sound, so the instrument should measure the temperature, to correct the speed of sound.
ZRN703 Ultrasonic level meter
This series of products using two-wire technology, power supply and signal output sharing a two-core cable, output 4 ~ 20mA current signal.
Features:
• The maximum range of up to 30m
• minimum resolution of 1mm
• LCD big screen
• intelligent signal processing technology
• All-plastic anti-corrosion housing
• Patented transducer structure
• Simple buttons to set the parameters
• Flexible installation
• Probe can be extended
ZRN703 Ultrasonic level meter Protection class IP67
Without waiting for the container is empty or filled, without additional remote control
Thread (flange) fixing hole (bracket)
To choose a good installation location, design appropriate mounting interface.
① mounting location to choose smooth surface, material surface flat position as possible, while away from the escalator, the inlet, the discharge port, as far as possible to maintain distance from the container wall, away from the stirrer.
② installation interface requires opening size is large enough, when the flange mounting flange following takeover length to design reasonable, for my company's 10 meters, 12 meters range meter, take over the length should be no more than 15cm, select DN80 flange above the mouth.
For 15 m, 20 m, 30 m and 40 m range meter, take over the length should not exceed 20cm; select DN200 flange above the mouth.
For eight meters or less range meter, to take over the length is not required, it can be properly designed to eliminate the impact of the blind spot, and select DN65 flange above the mouth.

International Technology Answers
1. Ultrasonic meter What kind of applications suitable for the environment?
Usually applied at temperatures between -40 ℃ ~ 100 ℃, the pressure in place 3Bar (5kg / cm2) or less measured level or material level.
In the case of normal temperature and pressure and choose ultrasonic level measuring liquid level is the best option, with a reliable, easy installation, long life cycle, maintenance-free characteristics, and having a relative price advantage.
due to Ultrasonic level meter In the measurement of level, not in contact with the measured medium, as well as fully enclosed anticorrosive structure, so for viscous, corrosive, turbid liquid level measurement other, the best results.
2. For level measurement of volatile liquid sealed container, should pay attention to those matters?
We should pay attention to two points:
gas inside a container and the air speed of sound may be different from the speed of sound, such as the speed of sound level meter can not be corrected, some error occurs;
b volatile liquid can condense on the surface of the ultrasonic level gauge probe, blocking send and receive sound waves, require level gauge with variable power control function.
Our products can meet the above requirements, and a large number of practical applications.
The ultrasonic level gauge how solid material level of effect?
Using ultrasonic level meter level measurement is possible, there is enough application experience and success stories.
When measured on the material level, it should select an installation location, choose the location of the material surface is relatively flat; for powdered material level, choose power (range) greater level meter to measure.
4. For liquid volatility liquid, how to use ultrasonic level meter level measurement?
There are three possible approaches:
a selection with automatic power control function ultrasonic level meter
b selection of a larger range of ultrasonic level meter
c added to plastic tubes in liquid level measurement plastic tube
5. Two-wire ultrasonic level meter and three-wire ultrasonic level meter with and different?
Two-wire ultrasonic level meter its power supply (DC24v) and signal output (DC4-20mA) share a loop, you can only use two lines, the standard form of the transmitter, the downside is that some of the transmit power is relatively little weak .
Three-wire ultrasonic level meter is actually a four-wire system, the power supply (DC24v) and signal output (DC4-20mA) circuit separation, each use two lines, when they are connected to a common ground when the negative side, you can usually use three lines Its advantage is that large transmission power.
6. what it feels like ultrasonic level meter blind?
Ultrasonic level meter in the transmission of ultrasonic pulses, can not detect the reflected echoes. Since ultrasonic pulses emitted by a certain time width, while emitting After ultrasonic sensors as well as Yu Zhen, can not be detected during the echo, so from the probe to the surface a short distance can not properly detect the beginning, this distance is called blind. measured the highest level, such as entering the blind spot, the instrument will not be detected correctly, there will be errors. If necessary, you can install heightened level meter.
7. In the engineering design and selection, the most should pay attention to the problem-what?
The ultrasonic level meter ultrasonic level meter and ultrasonic level meter collectively.
When used to measure liquid level, commonly referred to as ultrasonic level meter.
When used to measure the solid material level, commonly referred to as ultrasonic level meter. Adapt to the cold outdoor area to install a closed container to prevent frost.