fixed tube heat exchanger High Efficiency Tube Heat Exchanger,Tube Heat Exchanger For Electroplating,Stainless Steel Tube Heat Exchanger,Industrial Tube Heat Exchanger Yangzhou Tongyang Chemical Equipment Co., Ltd. , https://www.tongyangchemic.com
1. Before use, the meter needs to be powered on for 15 minutes.
2. Take care to prevent vibrations and shocks. Do not use it in places with excessive dust and excessive harmful gases.
3, the input lead should not be too long, if the measured signal input end is longer, please try twisted pair shielded wire.
4. If the signal is accompanied by high frequency interference, the low frequency filter should be tested online.
5. When unused for a long period of time, please supply electricity once every three months for not less than 4 hours.
6, long-term preservation should avoid direct light, should be stored in the ambient temperature -25 °C ~ 55 °C.
7. If the meter has no display, check the auxiliary power supply first and the voltage is within the range.
8. If the display is abnormal, check the input signal is normal and the signal terminals are tightened.
9. Unless the PT has sufficient power, the PT signal cannot be used as an auxiliary power source at the same time to ensure the normal operation of the instrument.
10. The current terminal screw in the CT circuit must be tightened to ensure reliable contact between the in/out line to avoid malfunction.
11. To verify the meter, check the instrument should be better than 0.1 in order to ensure the calibration accuracy.
The structure of fixed tubesheet heat exchanger is simple, compact and cheap, but cannot be cleaned mechanically. This tube bundle of heat exchanger is connected ontubeplate, which is welded on both ends of the shell, the top cover connected are equipped with fluid inlet and outlet nozzles.A series of baffles perpendicular to the tube bundle are usually installed outside.Two different temperatures fluids inside out, therefor regid material is used. Therefore, to avoid thermal expansion between tubes inside out when temperature difference is higher than 50°C, automatic temperature compensator needs to be installed.However, the compensation device can only be used in the case that the pressure of the shell side fluid is not high when the temperature difference between the shell wall and the pipe wall is less than 60-70°C. Generally, when shell side pressure exceeds 0.6Mpa, because compensation ring is too thick, it is difficult to expand and lose the role of temperature compensation, other structures should be considered.
Zhejiang Tiankang multi-function table considerations analysis
The multifunctional power meter can accurately measure all commonly used power parameters in a three-phase power grid system: three-phase voltage, three-phase current, active power, reactive power, power factor, grid frequency, active power, and reactive power. Communication interface and energy pulse output function. Use MODBUS-RTU communication protocol to realize LED field display and remote RS-485 digital communication. It has the characteristics of convenient installation, simple wiring, convenient maintenance, small amount of engineering, and input parameters that can be set on site. It can also complete the networking communication with PLCs and industrial control computers in the industry.