Lunte specializes in the design and manufacture of temperature sensors and nuclear measurement instruments, involved in industries such as industrial, nuclear power, and is recognized as a national-level "little giant" enterprise and a "hidden champion" enterprise in Zhejiang Province.
Thermocouple And RTD
Thermocouples and thermal resistors are commonly used with display instruments and computers to directly measure the temperature of liquids, steam, gas media, and solid surfaces in various production processes within the range of -40°C to 1600°C. Due to their simple structure, low cost, and easy maintenance, they are widely used in industries such as petroleum, chemical, steel, and power.
Sheath of flexible thermocouple is drawn by special stainless steel in special process, so it is muchsofter thantraditional ones, but the performance is same, despite of flexibility. Flexible thermocouple can be inserted intozigzag thermowell and measure temperature of various structure inner the reactor.
The spring structure makes measuring end of spring loaded thermocouple or RTD adiustable. The adjustablerange of insertion length is about 15mm. Measuring end sticks to top of thermowell, making measurement fastand accurate. Spring loaded thermocouple or RTD is applicable to all kinds of thermowell.
Surface Thermocouple and RTD
Suitable for measuring temperatures on various pipeline, reactor, and furnace surfaces, with multiple forms of measurement ends and mounting methods available based on the equipment and environment used.
Linear dynamic surface thermocouples (temperature measuring cables or thermal cables) are used for temperature measurement and early warning on the surface of coal-water slurry gasifiers.
The sheath covered with refractory fibers, the reinforced blade thermocouple is more anti-corrosive and has a longer lifetime
Abrasion Resistant Thermocouple and RTD
The thermometer casing is specially hardened to provide corrosion resistance, erosion resistance and excellent bonding strength. The process includes surfacing, spray welding and spraying cemented carbide, etc. , increase the surface hardness and wear resistance, you can also choose the overall cast wear-resistant head. It can be used in oil refining catalytic unit, circulating fluidized bed, fluidized bed, coal mill outlet and cement industry.
Our company's patented product features a COT thermocouple with a comparison thermocouple core, At themeasurement end, there is an R-type thermocouple with a short-term temperature measurement and an armored coreleakage, as well as a K-tye thermocouple with a long-tem temperature measurement, The R-tvpe thermocouple cardirectly contact the medium for temperature measurement and can measure temperatures with higher accuracy. Thistemperature data can be used as the actual temperature of the medium, and the temperature diference between theR-type thermocouple and the K-type thermocouple can be compared, By comparing the difference and adding thetemperature value of the K-type thermocouple, it is the actual temperature.
It is suitable for the temperature measurement of the catalytic riser of oil refining, and the casing has a prismatic structure, which can effectively resist the erosion of high-speed flowing catalyst particles contained in the medium.
COT thermocouple is mainly used to measure temperature of ethylene cracking furnace outlet. Beginningin 1998, our company has been committed to the research of COT thermocouple. Based on differentfurnaces and the users' different reguirements, we have desianed a variety of different structures of theCOT thermocouple, which replaced the imported products and are widely used in the major ethyleneprojects. Our products have characters of small measurement error and long service life, so they arewidely used, and make us one of the largest manufacturer of COT thermocouple.
Multipoint Thermocouple and RTD
Multipoint Thermocouple (Resistor) is suitable for production sites where temperature gradients are not significant and where simultaneous measurements at multiple locations or multiple measurements at a single location are needed. It is widely used in devices such as synthesis towers, reactors, and storage tanks. Based on the structure, it can be classified into integrated temperature sensing elements and separately removable types.
A multi-point flexible thermocouple suitable for temperature measurement in butanediol (BDOsynthesis reactors, with a maximum operating pressure rating of 2500 # (design pressure of 34.8MPaand design temperature of 204 '℃), and equipped with a pressure instrument for leakage detection.
It is used in coal-water slurry water-cooled wall gasifier (Tsinghua furnace, Jinhua furnace, Luxi furnace, etc.); There are 3 temperature sensors, two K-type and one B-type, the K type is used to measure the temperature of the annular cavity and the water wall temperature, and the B type is used to measure the temperature of the furnace combustion chamber, and the double-layer anti-leakage and detachable structure are set.
Our company has a variety of multi-point thermocouples suitable for ethylene glycol reactors. According to the process requirements, it can be divided into: single branch multi-point, multi-branch multi-point; Fixed, core-pullable, leak-proof and so on.
It is suitable for temperature measurement inside various reactors, especially hydrogenation reactors, with multiple independent casings fixed with T-beam brackets to prevent casing from bending, and equipped with sealing chambers and leakage detection pressure gauges.
High Temperature Thermocouple
Suitable for measuring temperatures of 1000℃ and above, with the sheath made of alumina, silicon carbide, special metals, or molybdenum disilicide, and equipped with high-temperature-resistant stainless steel reinforcement tubes. The thermocouples typically use noble metals of types S, R, or B, and are generally of an assembled structure.
Used for temperature measurement at the top of coke oven regenerators, with a thermocouple insertion depth of nearly 2 meters. It features a reinforced square box and support ribs to prevent deformation when installed horizontally in high-temperature environments. The adjustable insertion depth is facilitated by a movable flange connection.
Used for measuring temperature in the carbonization chamber of large-volume coke ovens, equipped with three layers of high-temperature resistant sheaths and a movable flange. The sheath is designed with multiple ventilation holes to allow for hot air convection, offering quick response and high accuracy.
It is suitable for measuring coal-water slurry gasifier furnace.Flange connection with anti-leakage seals,which are made of US imported volcanic ash assemblies. Thermowell with adjustment screw, according tothe actual thickness of the furnace wall to adiust the insertion depth, the measurement part of the use olspecial metal thermowell.
Bimetallic thermometer
The bimetallic thermometer is an on-site measuring instrument suitable for medium and low-temperature measurement. It can directly measure the temperature of gases, liquids, and steam. Based on its design principles and structure, this thermometer features low cost, easy installation, and on-site reading capabilities, making it a viable alternative to other types of measuring instruments. It is widely used in industries such as petroleum, chemical, steel, and power.
The bimetallic thermometer is a field measurement instrument suitable for measuring medium and low temperatures, capable of directly measuring the temperature of gases, liquids, and steam. This thermometer is characterized by its low cost, easy installation, and the ability to read measurements on-site, making it a partial replacement for other types of measuring instruments. It is widely used in industries such as petroleum, chemical, steel, and power generation.
Othes
Can choose NPTthread and weld,full penetration weld or integration forged.
Tantalum is expensive and can not be bulld-up welded with other stainless steel. So thermowell is separated from flange,which has a sealing face of tantalum.
