Feedwater heaters use steam drawn from the turbine to increase the temperature of the boiler water. The water first enters the low-pressure heater to be heated, then enters the deaerator to remove excess oxygen, and then enters the high-pressure heater for further heating and pressurization. According to ASME standards, each heater must be equipped with two independent liquid level control loops.

Challenge:

Feedwater heater liquid level control points: (1) prevent liquid level from rising to the extraction line (2) immerse the coil in the condensation zone (3) keep the drain cooler submerged. Liquid level instruments must be able to withstand moderate to high temperatures, high pressures and turbulent flow conditions.

Products:

● LC series intelligent displacer liquid (boundary) level transmitter

LC series displacer type liquid level gauge is designed according to the principle of Archimedes buoyancy, and is used to measure liquid level, interface and density of liquid. It has high measurement stability, especially suitable for liquid level/interface measurement occasions with small range, high temperature, high pressure, and low density, and can meet the interface measurement with small medium density difference. The transmitter can conveniently perform remote configuration and management (monitoring) of the transmitter through the HART communication protocol, using a PC or a general-purpose handheld terminal, and can also be operated with conventional local keys.

Features:

● Double SIL 2 certification of France BV and Shanghai SITIIAS.

● Provides 4-20 mA and with HART, 475 Field Communicator for on-site configuration, calibration and diagnostics.

● Comprehensive fault diagnosis, warning and status history.

● Meet the PED pressure vessel certification required by the European Union, and the applicable pressure can reach up to 42MPa.

● Can be used in non-steam applications up to a maximum process temperature of 500°C.

● CSA, ATEX and IEC explosion-proof, intrinsically safe certification.

● Process parameters can be adjusted online.

● The head of the transmitter can be switched freely in 8 directions without affecting the on-site process.

● Suitable for interface measurement and density detection.

● (EMC) EU Electromagnetic Compatibility Directive CE certification.

● RF2000 Series Guided Wave Radar Level Meter

The manufacturing technology of RF2000 series guided wave radar level gauges all come from our company. After years of demonstration by radar liquid level experts, the quality and quality are guaranteed in all aspects; RF2000 series guided wave radar level gauges have various forms and installation methods, which are almost suitable for The measurement of the entire liquid (interface) surface can also be applied to the measurement of dust, flour, sand and granular materials, which can completely replace the use of buoys and magnetic liquid level gauges; it has many advantages, such as during the measurement process, Its measurement accuracy is not affected by changes in medium density, temperature, pressure, etc.; it also has simple installation and debugging methods, and it can be used only by inputting configuration data. It is a relatively advanced liquid level instrument and is widely used in petroleum , chemical industry, electric power, metallurgy, pharmaceutical, food, oil and grain storage and other industries.

Features:

● Two-wire DC 24V power supply with low power consumption and HART communication protocol.

● The performance will not be affected by the change of process conditions such as the specific gravity, dielectric constant and temperature of the medium within the specified range.

● The coaxial antenna (probe) assembly has a unique sealing form, no leakage, high pressure resistance, not easy to aging, and long life.

● The double-rod probe will not affect the correct measurement when part of the material hangs on it, and has high measurement accuracy.

● It can measure the medium with extremely low dielectric constant which cannot be measured by traditional guided wave radar.

● RF2000 series transmitters are suitable for medium liquid level measurement under high temperature and high pressure working conditions.

● The length of the rod type probe rod can reach 0.5~6m, and the length of the cable type probe rod can reach 21m.

● The transmitter part (meter head) is interchangeable, more convenient for maintenance, good compatibility and high stability.

● The zero position and range can be adjusted on site, and can also be adjusted remotely through a remote handheld operator, desktop, or portable computer.

● UHZ-517 Series Magnetic Flap Level Gauge

UHZ-517 series magnetic flap liquid level gauge is a new type of on-site display instrument. The product has the characteristics of simple structure, intuitive and novel reading, no blind spot in observation, large measurement range, safety and reliability, and convenient installation, use and maintenance. This product is widely used in petroleum, chemical industry, electric power, metallurgy, light industry, pharmaceutical, papermaking, environmental protection and other industries to provide on-site indication of the liquid level in various storage tanks, tanks and other containers, and the company’s production All kinds of liquid level transmitters and liquid level switches realize the automatic process control and measurement of various industries.

Features:

● Simple structure, intuitive and novel readings, no blind spot in observation, large measurement range, safe and reliable, easy to install, use and maintain.

● The float is made of 304, 316L, TA2 and TC4 materials, and the float has good high temperature resistance, up to 450°C.

● The welding process meets the requirements of PED welding process. The outer cylinder is made of 304 and 316L materials, and the maximum pressure resistance can reach 26Mpa.

● Optional local indication type, remote transmission type, and liquid level alarm type.

● According to customer needs, through various types of production, it can be applied to various working conditions.