How can Figrex orifice flowmeters be better maintained?

1。The probe of the orifice flowmeter should be cleaned regularly, and it was found that the detection holes of individual probes have been blocked by dirt or even wrapped in plastic sheeting, which affects the normal measurement.

2.The flowmeter regularly checks the grounding and shielding to eliminate external interference. Sometimes question 3 is indicated

Orifice flowmeter due to the determination of the K coefficient is very important in the whole link, the accuracy of the K coefficient directly affects the accuracy of the circuit, the instrument replacement parts and the wear and tear of the process pipeline, etc., may affect the K coefficient and many chemical plants lack the means and ability of calibration, can only send out the calibration, affected by the process operation, to remove the vortex street from the pipeline to send out the calibration time, the process is difficult to meet, so that the K coefficient can not be determined. This year, through the transformation of the flow meter, although the calibration conditions of the vortex street with a smaller diameter have been obtained, but there is still nothing that can be done for the vortex street with a larger caliber, and attention should be paid to the use of the on-site calibration method of the vortex street, the use of standard frequency and portable ultrasonic flowmeter, the instantaneous flow rate in the pipeline and the pulse output frequency of the sensor are measured, and the K coefficient is calculated on the spot.

4.The orifice flowmeter should be dried once regularly or treated with moisture when the orifice flowmeter is installed in a humid environment. Due to the moisture-proof treatment at the end of the probe, the operation will be affected after being wet.

5.The management of the data of the orifice flowmeter should pay enough attention to facilitate the future work.

It is due to interference.

For the orifice plate, the impulse system and the front and rear pipelines should be discharged regularly, and the newly installed impulse conduit needs to be discharged a little more frequently (about once a week), and the time can be longer in the future.

The approximate structure of the Figres Orifice Flowmeter is as follows:

Throttle parts: standard orifice plates, standard nozzles, long-diameter nozzles next to the missing orifice, 1 4 round orifice plates, double-volt rubber heavy orifice plates, eccentric orifice plates, round orifice plates, conical inlet orifice plates, etc.

Pressure device: ring chamber, pressure flange, clamping the ruler ring, impulse pipe and other connecting flanges (flanges of national standards, various standards and other design departments), fasteners.

There are some things that need to be paid attention to in the installation of the Figres Verita flowmeter, we must pay attention to it when installing it, and I will introduce you to the installation method of the Figres Powerbar flowmeter.

1. Basic installation method of horizontal pipeline.

For horizontal pipes, it is recommended to measure gas within 160 degrees above the pipe, especially for gases with a large amount of gouache. When measuring liquids, it is recommended to install within 160 degrees below the pipeline, especially for liquids containing a large amount of gas, we only recommend this installation, but one thing should be noted, for those liquids that are very easy to vaporize, such as liquid olefins, plug in the same direction as the gas when installing, above the pipeline.

2. Basic installation method of vertical pipeline.

For vertical pipes, it can theoretically be installed within 360 degrees. For wet gases that contain a lot of moisture, it is recommended that the sensor be installed at an upward tilt of 5 degrees. For liquids containing large amounts of gas, it is recommended that the sensor be installed with a downward tilt of 5 degrees.

For steam, it is recommended that the sensor be installed with a downward tilt of 5 degrees and that the sensor should be at the highest point in the entire measuring system.

There must be no ferromagnetic objects in the 100 mm space around the Figrex float flowmeter. The installation position should be far away from the valve reducer, pump outlet, process pipeline turning port, etc. It is necessary to maintain the requirements of the 250mm straight pipe section after the first 5d.

The large change in the density of the liquid medium is also a reason for the large error. Because the instrument is calibrated before calibration, all are converted according to the density given by the user, and the flow rate of water under the calibration state is converted, so if the density of medium changes greatly, it can cause a large error to measurement. The solution is to bring the changed medium density into the formula, convert it into an error correction factor, and then multiply the flow rate measured by the flow meter by the coefficient and replace it with the real flow rate.

Since the gas medium is greatly affected by temperature and pressure, it is recommended to use the method of temperature and pressure compensation to obtain the real flow rate. Long-term use and pipeline vibration and other factors cause the float flowmeter sensing magnet, pointer, counterweight, rotating magnet and other moving parts to loosen, resulting in a large error.

You can first use the hand to push the pointer to verify. First, press the pointer to the RP position to see if the output is 4mA and whether the flow rate is 0%, and then verify it according to the scale in turn. If a discrepancy is found, the position of the part can be adjusted.

Generally, professional personnel are required to adjust, otherwise the position will be lost, and it needs to be returned to the manufacturer for correction.

1. Urine. When it was used for urine water measurement in hospital patients, it was difficult to have a suitable measurement method in the past because the system could not be shut down, and the flow rate was very large, the pipeline situation was complex, and the site environment was harsh.

2. Fart. Farts are a kind of gas, the ancients tried no way, but could not measure its flow rate, and now Figret flowmeters can just accomplish this mission.

3. Sewage feces and urine mixture.

Sewers, gutters, in toilets, urine, workers take out the "car" as the unit of measurement, can not be accurate, so the toilet management committee feels very lost, now with the Figret flow meter, the management committee will never suffer again.

We have a lot of things to pay attention to in the installation of Figres orifice flow sensors, and the pipeline conditions you mentioned are just one of them

1) The straight pipe section before and after the throttle letter must be straight, and there must be no visible bending.

2) The straight pipe section of the device throttle should be lubricated, if it is not lubricated, the flow coefficient should be corrected by Hu Xun with roughness.

3) In order to ensure that the activity of the fluid is 1 day before the throttle, the turbulent velocity dispersion is abundantly developed, and this dispersion is made into an average axisymmetric shape.