Installation sequence of pressure transmitters, platinum resistors, and flowmeters

When installing pressure transmitters, platinum resistors, and vortex flow meters in the same pipeline, there is usually a specific order of installation and certain standards that must be followed to ensure accurate measurements and the proper operation of the equipment. 1. **Installation location of vortex flowmeter**: Vortex flowmeters require long straight pipe sections both upstream and downstream. It is usually necessary to provide a sufficient length of straight pipe section before and after the flow meter in order to eliminate disturbances in the fluid flow and ensure the accuracy of the flow meter’s measurements. The typical required length of the straight pipe section is likely to be more than 10 times the diameter of the flow meter. 2. **Installation location of the platinum resistor**: Platinum resistors are used for temperature measurement, and their installation location can be chosen fairly flexibly; however, they should be placed away from areas with disturbances near the flow meter to avoid affecting the temperature readings. It is generally recommended to install the platinum resistor in a straight pipe section before the flow meter, as far away as possible from eddies and other factors that cause changes in fluid temperature. 3. **Installation location of the pressure transmitter**: The pressure transmitter is usually installed at a location far from the flow meter, and can be placed before or after the platinum resistor. The key is to ensure that the installation location accurately reflects the pressure conditions in the pipeline, unaffected by the operation of the flow meter and temperature sensors. The general recommendation is to first consider the installation requirements of the flow meter, as it has the strictest requirements regarding fluid flow conditions. Then, based on the fluid properties and pipe layout, select suitable installation locations for the platinum resistors and pressure transmitters. Ensure that all sensors can work together properly, enabling seamless data collection. Furthermore, it is recommended to consult the installation manuals for specific sensors and relevant industry standards in order to follow best practices and specifications. .

It can be installed wherever is convenient; there is no specific order. For vortex flow meters, the sensing element is installed during pipeline installation. For PT100 sensors and pressure transmitters, holes are made in the pipeline during installation, after which sleeves are attached. In the case of the latter, holes are drilled in the pipeline, metal tubes are connected to them, along with small valves, connectors, and supports. None of them are conflicting

According to the measurement principle, the vortex flow meter is installed first from upstream to downstream; after leaving a sufficient length, the pressure transmitter is installed (the general requirements for the spacing in front of and behind the vortex flow meter are 20D in front and 5D behind), and then the platinum resistance thermometer is installed. For the installation requirements of vortex flowmeters, it is recommended to refer to the SEPD 0301-2001 standard.

Yes, the thermal resistor is installed at the end to avoid disturbing the flow and pressure measurements