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◆ leakage;
◆ Loss of wear (when using special detergent);
◆ There is gas in the liquid pipeline (causing pressure head error);
◆ Accumulate liquid in the gas pipeline (causing pressure head error);
◆ Density between two pressure pipes is different due to temperature difference
(causing pressure head error).
(d) Method of reducing error is as follows:
◆ The pressure pipe shall be as short as possible;
◆ When measuring liquid or steam, the pressure guiding pipe shall be connected
upwards to the process pipeline, and the slope shall be not less than 1/12;
◆ For gas measurement, the pressure guiding pipe shall be connected
downwards to the process pipeline, and the slope shall be not less than 1/12;
◆ Liquid pressure guiding pipeline shall be laid to avoid high points in the
middle, and the gas pressure pipe shall be laid to avoid low points in the middle;
◆ The two pressure pipes shall maintain the same temperature;
◆ To avoid friction influence, diameter of the pressure pipe shall be large
enough;
◆ There shall be no gas in the liquid-filled pressure pipe;
◆ When using spacer liquid, liquid on both sides of the pressure pipe shall be the
same;
5. Connection
5.1 Connecting device
Warning
There is a risk of electric shock!
When operating voltage is higher than 35V DC: There is dangerous voltage on
the terminal block.
▲ Do not open cover of the live instrument in a humid environment.
Warning: Connection errors can result in limited electrical safety!
▲ There is a risk of electric shock / explosion in a danger zone!
▲ When using measuring equipment in a hazardous area, it shall be installed
in accordance with relevant national standards and regulations, as well as the
Safety Instructions or the Installation/Control Icons.
▲ Devices with built-in overvoltage protection unit shall be grounded.
▲ With polarity reverse connection, radio frequency interference (HF), over
voltage peak protection circuit.
5.2 Wiring method
Monocrystalline Silicon High Stability Transmitter
