XI'AN YUNYI INSTRUMENT COMPANY LIMITED 1.Pressure Transmi�er 4.Dead Weight Tester 7.Temperature Transmi�er 2.Pressure Guage 5. Level Transmi�er 8.Density Meter

YFM4800 ELECTROMAGNETIC FLOW METER USER MANUAL Product descrip�on YFM Smart electromagne�c flow meter is a high-performance, high-reliability flow meter. It used to measure the volume flow of conduc�ve liquid and slurry in closed pipelines. Widely used in steel, electricity, petroleum, chemical industry, coal, metallurgy, papermaking, water supply and drainage, food, pharmaceu�cal industry, etc. Working principle The measuring principle of electromagne�c flow meter is based on Faraday's law of electromagne�c induc�on. The sensor is mainly composed of a measuring tube with an insula�ng lining, a pair...

Technical parameter

Flange connection structure and installation dimensions Unit: mm Selection codes explanation Note: "•" on behalf of optional," o" is mean not optional. (1) Instrument size error ± 2mm (2) The rated flange pressure of this table DN10-DN300: 1.6MPa DN350-DN500: 1.0MPa ,DN600-DN2200: 0.6MPa. (3) Other flange standards are customized.

Flange connection structure and installation dimensions Flow range and Flow rate table Instrument installation Choosing the correct installation location and adopting the correct installation method is the key to using the electromagnetic flow meter. If the installation is wrong, Not only will it affect the measurement effect, it will also affect the measurement accuracy, it will also affect the life of the flow meter, and even damage the flow meter. Installation location selection In order to make the sensor work reliable and stable, the following requirements should be paid attention to when...

Instrument wiring ●If the signal cable connected by split installa�on uses a customized dedicated cable, the shorter the cable, the be�er. ●The excita�on cable can choose Yz medium-sized rubber sheathed cable, and its length is the same as the signal cable. ●Signal cables must be strictly separated from other power sources and cannot be laid in the same pipe. ●The signal cable and the excita�on cable should be as short as possible, and the excess cables should not be rolled together. The excess cables should be cut off, and ●Re-solder the joints. ●When the cable mediates the sensor electrical...

Plot of installing measure Fig.1 Exterior size of the integrated Circular shells exci�ng circuit Switching Power Supply 4-20mA or 0-10mA 1-5000Hz Frequencyor Pulse Output Current Output Pulse Output OC Gate Status Output Status Control Communica�on Interface Fig.2. 1 Structure Of Converter’s Circuit The converter can supply exci�ng current to the coil in the sensor of electromagne�c Flow meter,the head amplifier amplifies the electromo�ve force from the sensor and converts it into standard signals of current or frequency so that the signals can be used for displaying, controlling and processing....

Request of relative sensor Sensitivity of sensor signal: under 1m/s, output 150pV ~200pV; For electromagnetic flow meter signal converters, there are four currents of 62.5mA in exciting loop, which make up of 250mA, and every 62.5mA is controlled by one 20Q exact resistance. So user can choose different exciting current by changing the number of exact resistance. The current will be 250mA when the signal converters leave factory, as such, if there are three exact resistance, the current will be 187.5 mA; if two, 125mA; Resistance of sensor exciting coil: Digital frequency output Frequency output...

Se c � on p i c t u re of conve rs i on Key a nd d i s p l ay Squared define keys and LCD screen display C on n e c � on s of s e n sor Fig. 4.1 (c) Keys on squared panel and large LCD display: Connectors and labels for the squared Rotundity define keys and LCD screen display Fig. 4.1(d) Keys on Circular panel and big LCD display Note: When measuring, pushing down “Compound Key + Enter” will appear password of changing state, base on dis�nc�on of secrecy, and change the password as we provide. Then pushing “Compound Key + Enter” again, and you can inter the state of se�ng parameter. If want to...

Labels of connectors in squared model Links and labels of connectors in Circular Model SIG 1 Signal 1 SGND Signal Ground SIG2 Signal 2 DS1 Shielded Exciting 1 DS2 Shielded Exciting2 EXT + Exciting Current + VDIN Current Two lines 24 V Spots ICOUT Analog Current Output ICCOM Analog Current Output Ground _ POUT Flow Frequency ( Pulse)Output PCOM Frequency (Pulsc)Output Ground ALMH Upper Limit Alarm Output ALM L Low Limit Alarm Output ALCOM Alarm Output Ground _ TCOM 232 Communication Ground To Separate Model Sensor Analog Current Output Frequency (Pulse) Output Communication Input Signal lines...

Labels and connec�on of signal lines in Circular model Output and power line All cables for signals transferring and power supply must be prepared by users. However, it should be careful to choose the cables that meet the upper limit load of consuming current. Note: When DIP switch next to terminal is set to ON places, the converter from its inside can provide +28Vpower supply and up-pull 10kΩ resistance to output Frequencies (PUL) to isolated OC gate, Alarm Output (ALMH.ALML), and Status Control ( INSW).Therefore, when converter has frequency output and works with sensor together, DIP switch...

The grounding requirements when installing convert Contact area of copper Connector PE on Converter Cabinet for grounding should be larger than 1.6mm2.Contact resistance should be less than 10Ω. First, purple copper tube should be cut into 1700 mm long (the copper tube can be lengthened according to the need ) to make the nail buried 1500 mm into the ground(Note : when burying nail, sprinkling a layer of broken charcoal at the top of nail, and then saline irriga�on). Then, 4 mm2 purple copper wire should be welded to the nail. At last, connec�ng ground wire to convert’s flange, ground ring and...