How to convert Fuji different pressure transmitter into pore board flowmeters？
The pores flowmeter is composed of a differential pressure transmitter and a hole board. Differential pressure transmitters are one of the two major equipment of the pore board flowmeter.
Therefore, we need design a hole board, and the suitable pressure pipe, valve ... and then install the fuji FKC differential pressure transmitter. it convert a Fuji FKC differential pressure transmitter into a pore board flowmeter.
How to ensure the size of the hole board ？
The patterns and size of the hole board are calculated based on the measurement of measurement (flow size, medium density, pipeline, temperature, pressure ...). In theory, the differential pressure cannot be determined in theory. In fact, if it is proposed in advance, more than 90%of them can be achieved (when calculating, set a differential voltage value calculation, but it does not guarantee that this difference can finally meet the requirements).
You can tell the pore board production factory the maximum and minimum range of your transmitter to let them design the hole board.
The pore board flowmeter is a high -volume ratio differential pressure flow device composed of standard pore boards and multi -parameter differential pressure transmitters (or fuji differential pressure transmitters, fuji temperature transmitters and fuji pressure transmitters). The flow of steam, liquid, and cited flow is widely used in the process control and measurement of oil, chemical, metallurgy, power, heating, and water supply. Slotting device is also called differential pressure flowmeter. It is widely used in gas composition of primary detection parts (throttling parts) and secondary device (differential pressure transmitter and flow display instrument). Steam and liquid flow measurement. It has simple structure, convenient maintenance, and stable performance.
The pore board flowmeter is a new generation of flowmeter integrating flow, temperature, and pressure detection function, and can automatically compensate for automatic and pressure. , Easy to use.
Foreplate flowmeters are mainly suitable for saturated steam, overheating steam, compressed air, mixed and non -flammable gas and hot water industrial measurement by sensing, transmission, and computing. The online automatic control of measurement and production process can be used. The important precautions for putting in operation are that the transportation must be performed in the pressure of the high -temperature steam in the pressure pipe to start the transportation.
The direct tube section before and after the flow of the pores flow meter must be straight. The direct tube section of the installation section should be smooth. A sufficiently long -tube section is required before and after the throw parts. When the upstream side of the throw part is an open space or a diameter ≥2D large container, the direct pipe length between the open space or the large container and the throttling must not be less than 30d (15D) (15D) Essence If there are other local resistance parts between the section and the open space or the large container, except that there is a small direct pipe section of the small straight pipe section with a joint regulations between the flow parts and the local resistance parts, from the open space to the festival festival The chief length of the direct pipe section between flows must not be less than 30D (15D).
How to use Fuji FKC hole board Flow meter correctly:
1. The pressure pipe system is filled with cold water as a pressure medium, and the measurement of high temperature steam is generally through cold water. When the pipeline does not transport steam, open the valve, pressure valve and balance valve, turn off the sewage valve, and directly inject cold water from the condensed tank injection hole until it is fully injected. Of course, the balance valve and pressure valve can also be turned off, and the valve can be opened to introduce high -temperature steam to slowly cool into water. This method is easy to damage the instrument because the steam temperature is too high, and it is generally not adopted. Pay special attention to measuring that the pressure pipe is not filled with water or the temperature is strictly prohibited to operate when measuring high temperature steam. Measuring compressed air and cold water directly adopt the medium compression.
2. Adjust the fuji pressure transmitter at zero -point migration. Due to the water column in the pressure pipe, an additional pressure is generated, so that the pressure display instrument must have additional readings. The additional pressure is required to be adjusted at zero point. Specific method: Turn off the valve once, open the pressure valve, and connect the power. Open the fuji pressure transmitter housing, adjust the migration screw, so that the output of the pressure display instrument is zero.
3. Fuji Differential pressure transmitter exhausted or excreted. After the pressure tube is filled with water, the pressure room of the Fuji differential transmitter is sometimes aggregated to affect the pressure of the pressure, and it must be excluded. Unscrew the bolt drainage of the lower part of the positive and negative pressure room. Generally, the newly -operated instrument does not need a discharge. Check that there is no leakage of the pressure pipeline system, turn off all valves, and prepare to put it in operation.
