Capacitive pressure transmitters are also more complex in composition and have more components. Therefore, the capacitive pressure transmitters must be disassembled during maintenance to avoid secondary damage.
Capacitive pressure transmitters are also more complex in composition and have more components. Therefore, the capacitive pressure transmitters must be disassembled during maintenance to avoid secondary damage.
How to Disassemble the Electric Box of a Capacitive Pressure Transmitter
1. Unscrew the cover on the terminal side to reach the signal terminal (power terminal). They are firmly fastened in the electrical box. Do not disassemble it. Otherwise, the seal between the two chambers will be destroyed, thus destroying the chamber. Explosion-proof structures do not achieve explosion-proof ratings.
2. Unscrew the cover on both sides of the circuit, you can touch the intelligent electronic components and display head, should develop a good habit; first disconnect the power, then go to the next circuit side of the cover.
3. Unscrew the fixed M4 screws on the circuit board and use this M4 screw to screw in the corresponding M4 screw hole of the amplifier board to remove the amplified circuit.
4. After verifying the circuit board, the zero and span adjustment screws should be aligned first so that the slotted slot is perpendicular to the verification board and the inspection board can be easily removed.
5, remove the nameplate, remove the assembly ring in the zero, zero adjustment screw, you can remove the zero and range and adjustment screws.
The separation of the components of the capacitive differential pressure transmitter from the electrical box:
1. Remove the enlarged circuit board and the verification board as described above.
2. Loosen the screw.
3. Unscrew the sensor assembly from the electrical box. Be careful! Do not damage the leads on the module. Carefully pull out the sensor assembly outlet from the hole in the electrical box. Pay particular attention when you remove the sensor assembly. Do not damage the diaphragm of the assembly.
4. The capacitive transmitter assembly is an integral welded part that cannot be decomposed.
Cold drawn steel bar is produced by hot rolled steel bar or wire rod to get smooth surface, more precision size, higher mechanical properties, which improves machining characteristics. It can also get various sections and sizes. So cold drawn steel bar is a better choice for machining users.
According to different steel grade, the production line is usually different. The Basic production line is as below:
For high carbon steel or alloy steel bars, to avoid the cracks in inner or surface, the bars are usually required to be annealed before cold drawing.
To get different mechanical properties or hardness depending on final usage, the cold drawn bars will also be heat treated such as annealed, normalized or quenched and tempered(Q&T).
For CNC machines usage, to get much more precision sizes or much more better surface roughness for chrome plating, the cold drawn steel bars can also be centerless ground or polished.
We have more advantages on producing cold drawn steel bars:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Wide range of cold drawn steel bar sizes: from 10mm to 150mm
3) Different cold drawing medias powder or oil to get different surface
4) Straightening machines to get better straightness up to 0.5mm/m
5) Grinding and polishing machines to get better roughness upto 0.4um
6) Heat treating furnaces to adjust the mechanical properties
7) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
8) Multiple packages to avoid broken packages and anti-rusty
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SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.lerenspecialsteel.com