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Installation of Coriolis mass flowmeter

Author: Release date: 15-51:13:02 Source: Shanghai Cixi View: 123
?????? Coriolis mass flowmeter It is mainly divided into two parts: sensor (primary meter) and transmitter (secondary meter), which are connected by shielded cable. The transmitter (secondary meter) of intrinsically safe flowmeter must be placed in the environment meeting the specified conditions (see the figure below for details), and it can not be placed in the dangerous area. The power supply of the transmitter is 220 v. The central grounding of the power plug should be connected with the earth, and the grounding resistance should be less than 4 ohm. The installation of intrinsically safe flowmeter sensor and transmitter is shown in Fig. 4
The transmitter (secondary meter) of the composite flowmeter is directly fixed on the sensor (primary meter) with four internal hexagonal screws attached, and the two are connected by shielded cable. The power supply of the transmitter is 24 V DC. One end of the ground wire is screwed on the fixing screw, and the other end is connected with the earth. The grounding resistance is less than 4 ohm.
The installation of the sensor (primary meter) is shown in Figure 6. The following instructions are given:
(1) The mass flowmeter is generally installed on the horizontal pipeline, and the main part is naturally vertical downward. When installing, pay attention to the flow direction marked on the flowmeter. If the flow direction sign is not clear due to long-term use, refer to the flow direction of the sensor (primary meter): when the cable socket of the sensor (primary meter) is on the back, the flow direction is from left to right;
(2) The upstream and downstream of the flowmeter should be installed with fixed support frame;
(3) During installation, it is necessary to ensure that the flange of the flowmeter is concentric with the flange in the pipeline. Twisting the fixing bolts is to ensure that multiple bolts are evenly stressed, and forced alignment is not allowed, so as to avoid torque or bending moment on the primary meter;
(4) The downstream pipeline of the flowmeter needs a certain back pressure, which can not be directly in the open state, so as to prevent the liquid in the pipeline from being filled, resulting in incorrect measurement;
(5) The flowmeter must be away from the ground and cannot contact with other objects;
(6) The upstream pipe diameter of the flowmeter can be greater than or equal to the flowmeter diameter, but not less than;
(7) When measuring gasifying liquid or low-temperature liquid, the flowmeter sensor should be protected with insulation materials to avoid condensation or frost damage to the sensor;
(8) When there is air or gas entrained in the liquid in the measuring tube, the measurement error will occur, which must be avoided.
(9) For the models of four threaded nozzles, namely, DN 1, DN 3, DN 6 and DN 10, the above items (3) and (5) are not applicable. When the sensor is connected to the ground with a hose, it needs to be fixed on the ground.
(10) The number of sensor and transmitter should be corresponding one by one, otherwise measurement error may occur.

The above is the introduction of Shanghai Cixi to Coriolis mass flowmeter installation. I hope it can help you. If you have any questions about the products, you can call the page for consultation! The company provides 24-hour service!

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