LDE-125 electromagnetic flowmeter signal line laying points of attention

Case introduction

LDE-125 electromagnetic flowmeter cable laying is divided into two kinds of name shop and dark shop. Concealed is in the plant design will be electromagnetic flowmeter and other industrial control instruments to consider, in advance in the cement floor and wall buried in the cable laying steel pipe. Then use the threading method of cable laying in the steel pipe. Sometimes also use the cable trench with a combination of pre-embedded methods to solve the problem. There are two methods of open pavement, one is to lay the cable along the wall, the corner of the wall, after laying a good, inside the cable. Electromagnetic flowmeter these methods depend on the specific circumstances of the site.LDE-125 electromagnetic flowmeter between the converter and transmitter usually have two with the cable. Converter to the transmitter to provide excitation power supply power line. The transmitter wants the converter to output the ground signal line. In order to reduce the AC power supply on the signal interference, the signal line and the power line are required to be laid in two steel pipe, not at the same time laid in the steel pipe. For the transmitter and the converter between the additional transmission field compensation coil induction signal or power transformer output signal cable. In this case, this cable can be laid in the steel pipe with the excitation power line. The output of the converter for standard DC current should be shorted when there is no external load. Otherwise the converter indicates that the meter is disconnected without indication. When connecting an external indicating, recording, accumulating, or controlling instrument, it should be connected in series. Pay attention to the characteristics of the DC current, and provides for the output load does not exceed 2 kilo-ohms. Electromagnetic flowmeter wiring must pay attention to the following points: 1. wiring must be based on the transmitter and converter number matching sets of principles, strictly according to the wiring diagram of the number of connections. 2. signal line as far as possible to avoid parallel laying with high-current power lines 3. configuration of the power supply, should be installed with control switches, fuses, and, if necessary, also need to configure the indicator light. 4. wiring is complete, should be the transmitter and converter out of the threaded holes in the sleeve Screw the threaded sleeve of the transmitter and converter outlet hole to make it sealed. Prevent the intrusion of moisture and harmful gases.