GPRS wireless ultrasonic level meter

There are three buttons on the panel, through which the instrument can be debugged. After debugging, the measured value will be displayed on the LCD screen.

1. Product introduction

GPRS wireless ultrasonic level meter (measuring material level, liquid level) is a non-contact, high reliability, cost-effective, easy to install and maintain level measuring instrument. It can meet most of the level measurement requirements without contacting the medium, and is mainly used for occasions where the wiring is limited or there is no wiring.

To use a wireless ultrasonic level gauge, the following conditions of use must be met.

1. The mobile phone signal of Live Mobile or China Unicom must be good. Use mobile or Unicom mobile phone card traffic to transmit data. The mobile phone card of Telecom is not currently supported.

2. The on-site measurement conditions meet the ultrasonic level gauge measurement.

3. The installation complies with the measurement conditions of the ultrasonic level gauge.

4. The host of the GPRS wireless ultrasonic level meter can have good sun-shading and rain-proof measures.

5. The cable between the sensor and the host is well protected and will not be worn or damaged.

3. Main technical indicators

Four, installation guide

4.1 Installation dimensions of the level gauge

⑴ Standard type of split GPRS wireless ultrasonic level meter:

       Host structure diagram                       Host physical diagram

⑵ Sensor type

Sensor: There are G2 and M78×2 two kinds of threads with a range of less than 10 meters. The default is G2.

Seven, wireless transmission and background server software

7.1.1 Basic precautions for wireless transmission

The GPRS wireless ultrasonic level gauge uses mobile phone traffic to send data to the background. Generally, mobile phone cards of China Mobile or China Unicom are used, and mobile phone cards of China Telecom are not supported temporarily. The mobile phone signal on site must be good.

7.1.2 Server configuration requirements:

    1. The operating system of the server is Windows 7 32-bit or 64-bit, and Windows 10 32-bit or 64-bit version.

2. Server hardware requirements: CPU is Intel or AMD dual-core 2GHz or more, total memory 4GB (at least 2GB memory remaining), hard disk at least two partitions (remaining space of each partition is more than 20GB), display is a minimum of 17-inch LCD (resolution 1024 ×768 80Hz).

3. At the site installation, the mobile phone signal of China Unicom or China Mobile is good, and there is no electromagnetic interference.

4. It is strongly recommended to use Alibaba Cloud server, and the annual rent is 500-1200 yuan. There is a fixed IP address and port number, and the access is stable, and the failure rate is low.

5. If the user has his own server and a fixed IP address (regardless of the broadband of China Telecom, China Unicom, and China Mobile): As long as there is a bandwidth of 4M or more, and no other software occupies the bandwidth.

If the user's server does not have a fixed IP address: it requires telecommunications broadband, ADSL dial-up Internet access, bandwidth of 10M or more, installation of the paid version of domain name resolution software, the cost is 300-400 yuan per year, and the data sent back on site can also be displayed. The speed will be slower and not stable enough.

7.1.3 Server Software

    The server software can receive the water level information sent from the scene, display it on the screen and save it.

Figure 7.1.3 Field water level data displayed by the background server software

    The right side of the server software is the basic function menu, including starting the software, closing the software, parameter setting, exiting the software, etc.

Figure 7.1.4 Instructions for using the menu on the right side of the server software

The top menu is divided into 5 products: ultrasonic level gauge, ultrasonic level difference gauge, open channel flow meter, Doppler flow meter, radar level gauge. Choose the corresponding menu according to the actual product on site.

Figure 7.1.5 Instructions for using the top menu of the server software

Through the setting, users can use WeChat to query the received data.

Figure 7.1.6 WeChat interactive page

After following the corresponding official account with WeChat, you can send instructions and query via WeChat:

1. Instrument record query instruction: consists of two parts, separated by a comma. The first part is the instrument type identified by tp1 to tp6, representing ultrasonic level gauge/ultrasonic liquid difference gauge/open channel flowmeter/Doppler flow velocity. Meter/radar level meter/drop-in level meter; the second part is the board card DTU number with numbers 1 to 100; for example, the command: tp1,1 means to query the ultrasonic level meter, DTU001 number, which is the closest to the current time Article (1-20) meter records;

2. DTU board parameter query command: the combination of dtu prefix and DTU number (1-100), for example: dtu1 means to query the board parameter record of DTU001 number.

The following is the query command "tp6,71" sent on WeChat, that is, to query the most recent record of the "drop-in level gauge" whose DTU number is "71":

Applications:

      Mainly used in sewage plants, water plants, mines, water conservancy, power plants, chemical plants, steel plants, smart water projects, various monitoring projects of geological disasters, municipal projects, sponge city projects, urban inland river governance projects, hydrology, water conservancy informatization construction Projects and other industries, scientific and reasonable management system and sound quality control system, realize product traceability management, help product safe and efficient operation, won the China National Chemical Corporation, Harbin Institute of Technology, Baosteel Group, China State Construction Group, COFCO, The trust of representative users in the industry, such as Hengan Group, has accumulated rich experience in on-site disposal of instrument products in various fields.