Differential pressure transmitter of drainage tube and emergency measures1

Differential pressure transmitter in daily use, there are many small details need to pay attention to guide pipe is one part of guide are the main functions of pressure pipe drainage, if pollution is not normally will affect the use of transducer, the project is to introduce this knowledge to specific.

differential pressure transmitter pollution mainly for easy condensation on a regular basis, easy to crystallization, sedimentary medium appearance, the work should adjust measures to local conditions, and not all process instrumentation needs regular blowdown.

pollution mainly for differential pressure transmitter, pressure transmitter, float level gauge, such as instrument, because the measuring medium containing dust, oil dirties, tiny particles in the guide tube deposition ( Or apply pressure valve in the deposit) , directly or indirectly affect the measurement. Discharge cycle can be set by the instrument work according to the practice on their own plans, performed on a regular basis.

before that must contact and technical personnel, to achieve technology personnel recognition, blowdown flow or pressure regulation system before, should first will automatically switch to the manual, to ensure that the valve opening is constant. For differential pressure transmitter, prior to discharge three valve group of positive and negative pressure valve shut up. Drain valve for container, slowly open the positive and negative pressure pipe drain valve guide, make the material and dirt into the container, to prevent the material directly into the trench, otherwise, the result of environmental pollution, and waste.

due to the poor quality of the valve, drain valve switch will be closed tightly after several problems, emergency measures is to add blank plate, ensure the drain valve is in not leak, lest affect measurement accuracy. Take the positive and negative pressure valve open three valve group, loosen differential pressure transmitter drainage (on the body Exhaust) Screw for drainage, sewage complete screw down the screws. Observe the site indicating instrument until the normal output, if the control system, the manual and automatic switching.