To meet the needs of domestic industry users characteristics, Delta Electronics Delta Electronics in its parent company of intelligent DTB series based on the thermostat, has introduced two signal-controlled valve position valve motor temperature control required Device - DTB9696RRV. For this upcoming high-performance, affordable new products, domestic users are looking forward to. We know that there are two types of valves that can adjust the opening degree according to the signal when there are many situations that need to control the physical quantity of the fluid: one is to control the degree of opening with 4 ~ 20mA current. Such valves are controlled by Delta DTA and DTB The thermostat current output models to achieve satisfactory results; and the second type of valve is the use of two output signals to control the positive and negative rotation of the valve position motor, when the forward signal is the motor that is forward; the same token, When the reversal signal is activated, the motor will reverse. When both signals are not input, the valve position will remain fixed. The second valve because it can be applied to more sophisticated control of the occasion, the current market by many users. In fact, Delta has enough design experience in the field of temperature control of the two valves. According to the needs of the market, Delta Electronics relies on the technical strength of Delta Electronics, a parent company, to quickly grasp the needs of users in domestic industries. , Introduced the valve position temperature controller - DTB9696RRV required for two signal-controlled valve position motors. The controller incorporates all the features of the intelligent DTB series of temperature control. In addition, the valve position control and the four PID parameter functions are specially added. The main functions and features of the controller are as follows: 1) The system program is designed for the valve position application and has easy parameter Set and control of high precision, especially suitable for building central air conditioning, freezer, industrial kilns and dyeing and other industries related equipment. 2) Built-in valve position system environment PID parameters Auto Tuning function. 3) Built-in 4 sets of PID parameters, in different set temperature, you can set or system to switch to the most suitable PID parameters. 4) The external wiring has the interlock function, positive / reverse signal will not enter at the same time, to avoid causing the valve position motor to burn out. 5) With valve position feedback signal function, depending on the type of valve by the parameters to set their own open. 6) With the valve position feedback function, all system parameters can be automatically measured by Auto Tuning, without manual input, such as: motor running time, the minimum and maximum feedback signal and so on. 7) System output / input and control method is equivalent to DTB series high-performance models. Since its entry into the domestic market, Delta Electronics has made significant strides in the fields of inverters, PLCs, thermostats and servo motors, thanks to the strong technical support from Delta Electronics. . As the product has always been a high technological content, fully comparable with well-known European and American brands, while the price is more affordable, so in the papermaking, textile, plastic machinery, construction and other fields and gradually establish a wide range of user base. The introduction of DTB9696RRV valve position controller adhering to Delta DTB series thermostat support the simulation of the amount of input and output, equipped with ASCII / RTU communication formats and other characteristics of the Delta fully reflects the position controller in the high-end market positioning, Highlighting the Delta Electronics technical strength in the field of thermostat. In the highly competitive electromechanical market, in addition to the technical content of the products, the cost performance is an important factor that determines the user's choice of products. Delta's position controller, which combines many advantages, will undoubtedly have a great impact on the market development in the next two years The impact.
The fluorinated mica crystals have very good
high temperature resistance, corrosion resistance and light transmission
properties, and can work for a long time at a high temperature of 1100°C.
No reaction occurs
with strong acids and alkalis; complete light transmittance (pure and
transparent). The natural mica plates traditionally used in the observation
window of high-pressure boiler water level gauge are all brown, and the light
transmittance is not good, and the temperature resistance is in the range of
200-700°C, especially the corrosion resistance is poor. The boiler steam drum
water in thermal power plants contains alkali. After reacting with natural mica
and alkali, it is washed with hot air and hot water, and it is prone to
fluffing, scaling, and being broken. In the short term (about 1-2 months), the
water level is not clearly understood. After being broken, it can easily cause
leakage. The fluorite mica does not react with the acid-base solution, and does
not react with water in the hydration reaction, so that it does not form a
layer, does not scale, and does not break. In the long-term (2 to 3 years)
scouring of high-temperature and high-pressure water (including acid and
alkali), the original clarity and transparency can still be maintained. In
China, it has been widely applied to the observation window of steam boiler
water level gauge in high-pressure boilers of thermal power plants. It has also
been selected by Japanese BBK company and NDK (Colin) company for the
observation window of high pressure boiler drum level gauge.
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