Dandong Top Electronics Instrument (Group) Co., Ltd (“DDTOP”) was established in 1992 and since then has continued to provide safe and reliable level and flow measurement instruments for the process industry. The Company has now become a leading manufacturer of level and flow measurement instruments in China and worldwide. DDTOP is committed to developing and manufacturing reliable instruments that ensure process safety.
Manufacturer’s official website: www.ddtop.com/en
TRG804X non-contact type radar level transmitter has a wider measurement range, and better diagnostic function. The use of advanced signal processing technology can filter out false targets or other noise signals. Pulse string radar level transmitter transmits short pulse string to the liquid surface. Through antenna, it can transmit extremely short pulses with very low energy. By using ultra-high speed timing circuit to measure the time required for the pulse signal to meet liquid surface and reflect echo.
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The latest generation of TRG802X series guided wave radar level transmitter is a two-wire 24VDC powered level transmitter, which adopts advanced microprocessor and unique echo processing technology.
TRG802X series guided wave radar level transmitter can be applied to various complex working conditions and applications. Whether it is a light hydrocarbon or water-based solution, it is suitable.
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MLT type magnetostrictive level transmitter is a kind of high-precision level transmitter, and it is also mounted as an external binding transmitter on the local level gauge. The product can be used for level and interface measurement. Through the magnetostrictive wire, the core part of the sensor, the small changes in magnetic field vectors are transformed into mechanical waves. The sensor circuit transmits current pulses along the magnetostrictive wire inside the sensor tube, forming a ring magnetic field around the magnetostrictive wire. When a float is encountered, the magnetic field generated by the permanent magnetic steel inside the float magnetizes the magnetostrictive wire axially. When the two magnetic fields are superimposed, the pulse is transmitted along the magnetostrictive wire to the top and bottom ends of the sensor respectively, and the float position is accurately confirmed by measuring the time difference between the starting and returning pulses.
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UTX tuning fork type level controller is suitable for high and low position detection of various level in tank or pipes. Products are widely used in chemical fiber industry, rubber industry, tire industry, cement industry, iron and steel industry, food factory, pharmaceutical factory, petrochemical plant, feed plant and other industries raw material / process / finished product barrel tank level control.
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ZTD displacer level (interface) transmitter is an intelligent level measuring instrument with international leading level independently developed by DDTOP after many years of technical research. The simple buoyancy principle is used to detect the change of level, and then the magnetic signal is converted into a stable 4-20mA current signal and output through the torque tube assembly and the hall sensor. The instrument has a variety of configurations and pressure levels, which are suitable for various applications.
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The high-pressure level switch is a displacer drive unit, which uses a single switch assembly for level alarm or control. These devices are designed for liquids with working pressures up to 250 bar and specific gravities of 0.40 and above. A permanent magnetic sensor is attached to the rotary switch drive. When the float/displacer rises correspondingly with the rise of the liquid, the corresponding sleeve will move into the range of the magnetic sensor and cause the switch to act accordingly
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UQZ type magnetic float level transmitter is based on magnetic float as measuring element. The float moves up and down with level change, and at the same time, the magnetic field is coupled to the inductive switch in the sensor. The change in the switch causes the output signal to change, which finally to know change of level.
The instrument is suitable for sewage treatment in the petroleum, chemical, electric power, light industry and pharmaceutical industries, as well as the measurement of the medium level in various atmospheric and pressure vessels, especially for the measurement of the level of underground storage tanks and storage tanks. According to the different installation methods, it can be divided into top-mounted and side-mounted.
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Available
UQK400 float level controller is composed of float, connecting rod, magnetic sensor and magnetic switch and signal conversion mechanism. The change of the medium level in the container causes the relative displacement of the float, which drives the connecting rod and the iron core to move up and down to change the relative position of the magnetic sensor. Through the magnetic coupling, the micro switch or the reed switch is operated to achieve l
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Available
Dandong Top Electronics Instrument (Group) Co., Ltd (“DDTOP”) was founded in 1992, and in 2001 became the first company to obtain ISO9001-2000 quality system certification. Successful co-operation with FISHER, a US company, has expanded the production line of buoy level gauges, making DDTOP the largest manufacturer of buoy level gauges in China.
In 2007, Dandong Top Pump Co, Ltd, a subsidiary company specialising in the development and sales of magnetic pumps, was established. DTOP was the first company in China to register its flow and level transmitters with the International FF Fieldbus Foundation and became a member.
In 2008, the company participated in the development and formulation of the national standard of “Dispenser Level Transmitter”. The entire product line joined the international HART protocol.
In 2009, Dandong Top Measurement and Control Engineering Technology Co., Ltd, a subsidiary company was established to research, develop and apply industrial process automation control systems. A modern new standard factory was put into operation, and more than 200,000 level and flow meters were produced in one year.
In 2010, the Research Institute of Dandong Top Electronics Instrument (Group) Co., Ltd was established to research and develop automatic control systems, application software and application electronic components. The institute participated in the development and formulation of the national standard “Calibration Rules for Target Flow Meters”.
In 2011, the company obtained ISO14001 international environmental management system certification and Q/SY1002.1-2007 international health, safety and environment management system certification.
In 2014, the “Research Centre of Industrial Automation Instrumentation Technology” was founded jointly with Shenyang Institute of Automation, Chinese Academy of Sciences.
In 2016, DDTOP was awarded the CE PED certificate of the European Union. PED is a mandatory regulation adopted by EU member countries on the safety of pressurised equipment.
In 2017, the company received SIL2 certificate from French BV, passed the national certification of intellectual property management system. The company participated in major oil exhibitions in Europe, the Middle East, the US, Canada and other foreign regions. It also participated in the development of the international standard “ISO5167-6 Wedge Flow Meter”.
