Temperature transmitter

Overview

Temperature transmitter is a kind of instrument which can convert temperature variable into standard output signal. It is mainly used to measure and control temperature parameters in industrial process. The products are widely used in petroleum, chemical industry, chemical fiber, textile, rubber, building materials, electric power, metallurgy, medicine, food and other industrial fields. It is especially suitable for computer measurement and control system, and can also be used with instruments.

Working principle

The temperature transmitter uses thermocouple and thermal resistance as temperature measuring elements. The thermocouple or thermal resistance sensor converts the measured temperature into electrical signal, and then sends the signal to the input network of the transmitter, which includes zero adjustment and thermocouple compensation circuits. The zero adjusted signal is input to the operational amplifier for signal amplification. One of the amplified signals is calculated and processed by V / converter and output with 4-20mA current, 0-5V / 0-10V voltage signal and RS485 digital signal. The other channel is processed by A / D converter and connected to the secondary instrument to display the corresponding temperature.

Classification

According to the signal transmission mode, the temperature transmitter can be divided into wired transmission and wireless transmission. The wireless temperature transmitter is composed of temperature sensor, signal processing circuit, communication module and power module. The wireless temperature transmitter is composed of temperature sensor, signal processing circuit, communication module and power supply module. It uses high-energy lithium battery for power supply and RF radio transmission of data. The instrument is easy to install, easy to use, without field wiring, which saves the trouble of conventional instrument wiring bridging frame, and saves manpower and construction cost.

Functional features

Ø Explosion proof design: Flameproof aluminum shell;

Ø Protection grade: IP67, fully sealed waterproof design;

Ø Zigbee communication, and it can be configured and tested by coordinator or router in the network;

Ø 4.5-bit LCD display: temperature data, voltage;

Ø LED indication: reset indication, configuration mode indication, network access indication and data acquisition indication;

Ø Adjustable installation direction: the direction can be adjusted by installing on the protective sleeve with its own movable joint;

Ø Adjustable insertion depth: adjust the length of temperature probe through self-contained adjusting joint, that is, adjust the insertion depth.

Main technical parameters

Ø Working environment:

Ø Temperature: -40℃~65℃;

Ø Atmospheric pressure: 80kPa～110kPa;

Ø Humidity: 5%RH～95%RH;

Ø Range (optional range): 0～ 110 Mpa (wireless); 0～60Mpa (wired);

Ø Accuracy: 0.5; 1.0;

Ø Power supply: 24 VDC or battery power supply;

Ø Accuracy level: output signal: 4～20mA, RS485;

Ø Case material: cast aluminum;

Ø Material of protective sleeve: ：316L, 304;

Ø Process connection: Union is equipped with protective sleeve;

Ø Range: - 200 ℃～ 600 ℃, customizable;

Company profile

Shengli Oil Field Shengli Petroleum Instrument Factory is located in Dongying City, Shandong Province, where the Yellow River flows into the sea. The company was founded in 1992 with a registered capital of 50.1 million yuan. As a supplier of oil exploitation industry, it has nearly 30 years of production history and service experience. It is an equipment manufacturing and service provider integrating the R & D, production, sales and technical consultation of petroleum equipment, equipment, instrument and instrument products.

The company has strong technical force, strong production capacity, perfect after-sales service system and good social reputation. Since its establishment, the company has focused on independent research and development and industry university research cooperation, and has a number of core technologies with independent intellectual property rights. At present, the company is equipped with a lot of products, including oil and gas continuous metering device, oil and gas pressurization metering device, oil well continuous gas separation device, gas pressure regulating device, steady flow water distribution valve group, intelligent dosing device, intelligent inventory system, quantitative loading system, continuous oil level monitoring system, electromagnetic flowmeter, vortex flowmeter, turbine flowmeter, high pressure water meters and other types of multi series and specifications of products. Among all the products, the oil and gas continuous metering device is one of the self-developed products with core technology. Since its successful research and development, the product has been widely used in domestic major oilfields due to its wider applicability, higher measurement accuracy and simple and easy-to-use operation mode. At the same time, it has attracted more and more international customers' attention.

At present, the company has obtained CE, SIL and other international certification, and successfully passed ISO9001, ISO14001, ISO45001 system certification, and obtained gas pressure regulator, industrial pressure pipeline GC2 and other special equipment license. In 2019, the enterprise was identified as a high-tech enterprise in Shandong Province.

The company focuses on strengthening the building of sales force. While stabilizing and strengthening the existing market, efforts should be made to explore other emerging markets. At present, the company's product sales cover Daqing, Jilin, Shengli, Zhongyuan, Xinjiang, Changqing, Yanchang, Guangxi and other domestic oil field markets. At the same time, it has many cooperative partners in the three eastern provinces, Inner Mongolia, Shanxi, Shaanxi, Shandong, Henan, Anhui and other major domestic coal production areas, and the international sales business is also in the process of expansion. Superior product performance, excellent product quality and good after-sales service guarantee have helped enterprises win extensive social praise.

The company will adhere to the “quality-oriented, customer-oriented, integrity based, innovative development” purpose, strive to develop and produce advanced technology, manufacturing products, to provide customers with more scientific and reliable solutions and better services.

Sincerely looking forward to cooperating with you! Welcome the clients all over the world to discuss the future!