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Points for attention in the use of mass flowmeter

Author: Release date: March 24, 2017 10:16:04 Source: Shanghai Cixi View: 130
As a new type of high-quality flow meter, mass flowmeter has been successfully applied in many industrial occasions and working conditions. However, for the majority of users, in order to ensure the working effect of mass flowmeter, it is necessary to understand its parameters and key points in use. The following small series will tell you about these two aspects of the problem.

Relevant parameters of mass flowmeter:

Working pressure: 2.51 ~ 6.42mp

Measuring pipe diameter: DN 15 ~ DN250

Flow rate range: 0 ~ 21t / h to 0 ~ 1500t / h

Output signal: 4 ~ 20mA, RS485 communication

Measurement accuracy: ± 0.1999%

Explosion proof grade: intrinsic safety

Points for attention in the use of mass flowmeter:

1. The unit of measurement for the output data of flowmeter and the data displayed in DCS operation station shall be unified, such as scfm or NCMH, lb / HR or kg / hr.

2. Confirm that the serial number of flow element and electronic circuit is consistent.

The flow element and the electronic part are matched. If the serial number does not match, the reading will be inaccurate. Special attention should be paid to the initial installation.

3. Electrostatic discharge device.

The protective bowl and other devices with a megohm resistance to ground must be used reasonably. ESD (ESD sensitive device) must be strictly observed when opening ESD sensitive device.

4. Avoid installing the sensor on the vibration pipeline.

5. Requirements for straight pipe section.

During installation, the upstream straight pipe section of the flowmeter is required to be greater than 20d, and the downstream straight pipe section is 10d.

6. The calibration of flowmeter output data should be consistent with that of DCS control system, such as 4 ~ 20mA, 0 ~ 20mA, 1 ~ 5V? DC, 0 ~ 5V? DC or 0 ~ 10C? DC.

7. Confirm the flow direction.

When the flow direction of the medium is parallel to the flow direction of the small plane, it should be noted that there is an arrow indicating the flow direction of the small plane near the small plane.

The working condition of mass flowmeter meets the parameter requirements of mass flowmeter and must have corresponding conductivity. And in the use of strict accordance with the above requirements, then you will certainly get the desired effect.

The above is the introduction of Shanghai Cixi on the use of mass flowmeter points for attention, I hope it can help you, if you still have related product problems, you can call the page for consultation! The company provides 24-hour service!

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