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Key points for laying signal line of electromagnetic flowmeter
now the cable pavement into a name shop and dark shop two.Dark shop is in the design of the plant will be electromagnetic flowmeter and other industrial control instrument panel unified consideration, in advance in the concrete ground and wall buried in the seamless steel pipe laying cable.The cable is then laid in the seamless steel tube by means of wiring.In some cases, the cable trench is closely combined with the embedded parts.Ming pu has two ways, one is the cable along the wall, the foot of the wall laid, inside the cable.This type of electromagnetic flowmeter depends on the details of the scene.
Key points for laying signal line of electromagnetic flowmeter
Electromagnetic flowmeter changer and transmitter between the general two with cable.One is the power plug in which the converter shows the switch power supply of excitation current to the transmitter.One is the transmitter to converter output signal line.In order to reduce the influence of alternating current on the data signal, it is stipulated that the signal line and the power plug are respectively laid in two seamless steel tubes, instead of laying in another seamless steel tube.For LD wastewater electromagnetic flowmeter and ld-f type electromagnetic flowmeter, the transmitter and the converter should also lift a cable to transport electromagnetic field compensation magnetic coil magnetic induction data signal or switch power transformer output data signal.In this case, the cable can be placed in the same seamless steel tube as the excitation current plug.
The output end of the ac current shall be short-circuited when there is no external load.Otherwise the converter meter short circuit without marking.When external marking, recording, integrating and operating the instrument panel, it shall be connected in series.Pay attention to the optical activity of ac current, and the output load should not exceed 2000 euros.
When connecting electromagnetic flowmeter, please pay attention to the following:
1. When wiring, be sure to match the standard of complete set of equipment with the corresponding number of transmitter and converter, and connect strictly with the corresponding number of wiring diagram.
2. As far as possible, the signal line should be parallel to the driving force line of large current
3. With switching power supply, automatic switch and safety tube should be installed, and display lamp should be provided if necessary.
4. At the end of wiring, screw sleeve of outlet hole of transmitter and converter should be tightened to make it sealed.Avoid moisture and harmful substances.
Shanghai cixi instrument co., LTD. Is a family enterprise, engaged in the development and production of high-precision flowmeter, which can be applied to almost any pump.Our factory in order to ensure the after-sales and price, cancel the intermediary agent, and end customers and market to maintain close contact, the quality of the flowmeter has reached the world's first-class level.
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