Two methods for connecting thermocouples to DCS

Thermocouples are a kind of temperature sensor that we often use everyday. However, when some users are using it, there is some doubt about whether the cold junction temperature compensation wire of the thermocouple is connected to the DCS. If there is no temperature transmitter in the middle, the DCS card is a thermocouple, then the compensation wire must be connected to the card; if there is a temperature transmitter, then the compensation wire is connected to the temperature transmitter, from the temperature transmitter It is 4-20mA signal to DCS. In order to help everyone understand and use it better, Xiaobian will next introduce two methods for connecting thermocouples to DCS:

1. Thermocouples use compensation wires, and there may be nodes in the middle, but they must be directly connected to the DCS thermocouple module with corresponding compensation cables, such as the LLMUX card in HONEYWELLTPS. Minimize nodes to reduce interference. In addition, the corresponding thermocouple type and compensation method must be selected in the DCS configuration.

2. Thermocouples use transmitters (temperature transmitters) in the field to convert to 4~20mA standard signals, then receive indoor safety barriers (if necessary, such as chemical environment), and then access DCS standard analog signals. Cards (common AI card). Pay attention to the need to use a compensation cable between the thermocouple and the transmitter. The transmitter must be set in compensation mode, thermocouple type, calibration range, etc. DCS must set the range, signal type, etc.

Gabions

Gabion nets are fabricated in the form of iron wire or polymer wire mesh that fixes the rock fill in place.

The Gabions is a structure made of wire Woven or Welded.

Gabion net can be used for

• Slope support

• Foundation pit support

• Shotcrete with net hanging on mountain rock surface

• Slope vegetation (greening)

• Railroad highway isolation fence

• It can also be made into cages and net mats, which are used for the anti-scouring protection of rivers, dams and seawalls, and net cages for the closure of reservoirs and rivers.

Features and Advantages

√ The flexible structure can adapt to the changes of the slope without being destroyed, and has better safety and stability than the rigid structure;

√ Strong anti-scouring ability, can withstand water flow speed up to 6m/s;

√ The structure is inherently water-permeable, and has strong tolerance for the natural and filtering effects of groundwater. Suspended matter and silt in the water can be deposited in the rock fill, which is conducive to the growth of natural plants and gradually recovers Original ecological environment

Wire Mesh Gabions,Hexagonal Gabions,Gabion Hexagonal

HEBEI JUNTAN METAL PRODUCTS CO., LTD. , https://www.juntanmetal.com