Description
[Fault inspection] On site observation shows that the regulating valve continuously moves up and down, and the steam flow and drum water level are basically stable, but the feedwater flow fluctuates continuously, causing fluctuations in the output of the regulator.
[Fault GE VMIVME-4140] Adjust the damping time of the feedwater flow transmitter to 10 seconds, and the oscillation phenomenon is basically eliminated.
[Maintenance Summary] In this control system, the water level in the steam drum is of the same polarity as the feedwater flow, while the steam flow is of the opposite polarity. In addition to the phenomenon of steam water co boiling, the normal rise and fall of the water level in the steam drum is also gentle; The remaining interference factors may only be related to the feedwater flow signal. The simplest way is to first adjust the damping of the water supply differential pressure transmitter, and then consider other issues when there is no effect.
Product details | |||
Delivery time | Available | Estimated Lead Time | 4-6 weeks |
Factory warraty | 12 months | Module number | GE VMIVME-4140 |
Manufacturer | original country | Product Name | controller/plc/dcs/servo/panel |
Voltage range (VDC) | 24-120vdc | Output range (mA) | 120 |
Over-range protection (VDC) | 21dd. | Input range (mA) | 33 |
Working temperature | 120 | System memory (Mb | 125 |
Interface | 6 | Color code | BLACK AND BLUE |
Weight (KG) | 14.55 | Shipping weight (KG) | 1.25 |
Dimension (mm*mm*mm) | 255*120*25 | Purpose | Petrochemical industries |
Operation mode | Direct on-board | Product situation | Stop production |
Main product :
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