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<title>News-Anhui  Xin Huan Neng Electrical Co., LTD.</title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=list&catid=2]]></link>
<description>11News-Anhui  Xin Huan Neng Electrical Co., LTD.</description>
<item id="1">
<title><![CDATA[Instrument box and instrument box]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=630]]></link>
<description><![CDATA[Instrument box and instrument box are used to protect the instrument of a tool, then the instrument box and instrument box compared to what are the links and differences? In order to let you have a more in-depth understanding of the instrument box and instrument box, let us introduce the relevant knowledge of the instrument box and instrument box.Instrument boxThe instrument box generally includes the shell, the panel, the lining board, the support and so on components, mainly protects the internal components the function. The main body of the box is made of high quality aluminum a…]]></description>
<pubDate>2017-02-05 15:11:01</pubDate>
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<item id="2">
<title><![CDATA[Basic knowledge of instrument]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=629]]></link>
<description><![CDATA[Basic knowledge of instrumentDetection and process control instrumentation (usually referred to as automated instrumentation) classification methods, according to different principles can be classified accordingly. For example, by using the meter energy classification, can be divided into pneumatic, electric and hydraulic instrument instrument instrument (rare); according to the instrument combination form, can be divided into base meter, unit combination instrument and integrated control device; the installation form according to the instrument, can be divided into field instrumen…]]></description>
<pubDate>2017-02-05 15:09:51</pubDate>
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<item id="3">
<title><![CDATA[Some daily maintenance methods for instrument valves]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=628]]></link>
<description><![CDATA[The process and daily maintenance of instrument and meter valveInstrument valves regularly discharge two main work, one of the sewage, and the other is a regular purge. This work should be adapted to local conditions, not all process instrumentation valves are required for periodic blowdown.1 sewageThe sewage is mainly for the differential pressure transmitter, pressure transmitter, float level gauge and other instruments, as measured medium containing dust, grease, and other small particles in the deposition of lead pressure (or pressure valve to take the deposition), directly or …]]></description>
<pubDate>2017-02-05 15:08:26</pubDate>
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<item id="4">
<title><![CDATA[Some experiments on DC leakage current]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=627]]></link>
<description><![CDATA[What are the methods of DC leakage current test?1) according to the situation of the tested products, refer to the transfer test standard or preventive test procedure to determine the DC test voltage value. If the DC leakage current test is combined with the DC withstand voltage test, the DC test voltage should be used as the maximum test voltage.2, according to the size of the test voltage, field equipment conditions, select the appropriate test equipment and wiring methods, draw the test wiring diagram.3, first of all, combined with the site conditions, the reasonable arrangement…]]></description>
<pubDate>2017-02-05 15:06:28</pubDate>
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<item id="5">
<title><![CDATA[The detailed classification of wire and cable - Anhui new ri]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=626]]></link>
<description><![CDATA[Wire and cable.A power cable shall have the following technical characteristics1, can withstand high working voltage and high long-term, has very excellent electrical insulation properties, so the power cable by using the voltage level can be divided into: low voltage (1 thousand volts and below), medium (6 - 35 thousand V), high pressure (66 - 330 thousand V) and ultra high voltage (500 thousand kV and above).2, able to transmit a large current (hundreds of thousands or even thousands of security), so the use of cross-sectional area of several hundred or even thousands of square m…]]></description>
<pubDate>2017-02-05 15:02:42</pubDate>
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<item id="6">
<title><![CDATA[Heat resistant wire and cable categories]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=624]]></link>
<description><![CDATA[(a) wire and cable wire and cable resistance materials heat-resistant material is insulating and sheathing materials of body resin with heat resistance, the main varieties are: polyurethane (up to 155 DEG C grade), polyester (up to 135 DEG C), polyvinylidene fluoride (150 DEG C) and nylon (up to 115 DEG C) insulation or sheath material. Commonly used in communications, automotive, electrical, construction and other industries.(two) the heat resistance of ordinary cable material is improved by various means:1, heat resistance modification of rubber materialsRubber materials because …]]></description>
<pubDate>2016-08-21 14:53:01</pubDate>
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<item id="7">
<title><![CDATA[Talking about the difference between national standard cable]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=623]]></link>
<description><![CDATA[In the choice of cable according to their own use of the site to choose the cable, do not covet cheap. That is cheap and can ensure the cable GB, nine out of ten are walking a fine line. Flicker is not professional do not understand the industry users. In order to enable users to more clearly understand the quality standards of cable and wire and the distinction between the national standard and non-standard. Below we combined with the actual situation of engineering users and cable industry often encountered, so that we do a simple understanding.Cables and wires are commonly used …]]></description>
<pubDate>2016-08-21 14:51:58</pubDate>
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<item id="8">
<title><![CDATA[Cable type and name for electrical equipment]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=69]]></link>
<description><![CDATA[ModelNameUse scopeRVPCopper core PVC insulated shielded wireFor anti jammingRVVPCopper conductor PVC insulated shielded PVC sheathed flexible cable (wire)Rvp-105Copper core heat resistant 105 DEG vinyl chloride insulated shielded flexible wire5, production rangeModelRated voltage VCore numberNominal cross section mm2RVP rvp-105300/300One0.5-2.5Two0.5-1.5RVVP300/300One0.5-2.5Two0.5-1.5Three0.-1.5]]></description>
<pubDate>2016-08-18 14:12:09</pubDate>
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<item id="9">
<title><![CDATA[The difference between environmental protection cable and lo]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=67]]></link>
<description><![CDATA[In many areas of key projects, such as fire protection, monitoring, alarm, places will be used LSZH cable, people usually call it environmental protection cable, in fact does not refer to the environmental protection cable low smoke halogen-free cable, the following is a detailed analysis of the difference between non halogen low smoke cables and cable protection:1, halogen free:The green jacket insulation layer, and a special oxygen barrier layer material, not only has good electrical properties, mechanical properties, and ensure that the product does not contain halogen, solves i…]]></description>
<pubDate>2016-08-18 14:11:44</pubDate>
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<item id="10">
<title><![CDATA[Method for special cable]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=62]]></link>
<description><![CDATA[First of all, we need to understand the cable installation notes:A mine cable and heat pipe should be placed in parallel when the distance between the 2m, should be linked to 0.5m.Two, the cable and other pipelines in parallel or interleaved to be placed when the distance between the 0.5m.Three, cable buried placement, 1-35kV cable buried depth should be less than 0.7m.Four, 10kV and the following cable placed in parallel when the distance between each other is not less than 0.1M, 10-35kV not less than 0.25m, when the distance is not less than 0.5m.Five, the minimum bending radius …]]></description>
<pubDate>2016-08-18 14:06:08</pubDate>
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<item id="11">
<title><![CDATA[Introduction of special cable]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=61]]></link>
<description><![CDATA[Special cable is a special purpose, can be used in a particular situation of the cable, such as high temperature, acid and alkali resistance, termite resistance, as well as in the case of the ship&#39;s nuclear power plant, such as the use of wire and cable. It is classified, and electric power, control, computer cables and other categories do not belong to the same kinds of classification methods, which is above cable also contains a special cable. General special cables need to develop internal control standards.Special cable is a series of unique properties and special structure…]]></description>
<pubDate>2016-08-18 14:05:24</pubDate>
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<item id="12">
<title><![CDATA[Basic principles of fiber optic cable]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=60]]></link>
<description><![CDATA[Optical fiber transmission based on the principle of total reflection in the interface between two kinds of available light. The mutant fiber, N1 fiber core refractive medium refractive index cladding rate, N2 medium rate, N1 is greater than N2, into the core of the light reaching the core and cladding interface (the core packet interface) when the incident angle is greater than the critical angle of total reflection C, total reflection can occur without light energy through the core, the incident light can be through countless times of total reflection at the interface of forward …]]></description>
<pubDate>2016-08-18 14:03:49</pubDate>
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<item id="13">
<title><![CDATA[Main advantages of pressure transmitter]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=58]]></link>
<description><![CDATA[1, the pressure transmitter has reliable operation, stable performance and so on;2, special V/I integrated circuit, peripheral devices, high reliability, simple maintenance, easy, small size, light weight, easy to install and debug;3, Aluminum Alloy die casting shell, three end isolation, electrostatic spray protective layer, durable;4, 4-20mA DC two-wire signal transmission, anti-interference ability, transmission distance;5, LED, LCD, the three pointer indicator readings, the scene is very convenient. Can be used to measure the viscosity, crystallization and corrosive media;6, hi…]]></description>
<pubDate>2016-08-18 14:01:05</pubDate>
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<item id="14">
<title><![CDATA[Basic introduction of pressure transmitter]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=57]]></link>
<description><![CDATA[The pressure transmitter is one of the most commonly used sensor in industrial practice, which is widely used in various industrial control environment, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil, electric power, shipbuilding, machine tools, plumbing and other industries. Following a brief introduction of some commonly used pressure transmitter, pressure transmitter and its application principle for the measurement of liquid, gas or steam liquid level, density and pressure…]]></description>
<pubDate>2016-08-18 14:00:30</pubDate>
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<item id="15">
<title><![CDATA[What are the advantages of the electric transmitter?]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=56]]></link>
<description><![CDATA[1, the transmission line can be easily affected by parasitic thermocouples and resistance drop and temperature drift along the wire, the transmission line can be very cheap and thinner twisted pair wire;In 2, the current source output resistance is large enough, the magnetic field coupling to the wire loop induction voltage, will not have a significant impact, because the current minimum interference caused by the general use twisted pair can reduce interference resistance;3, capacitance interference will lead to receiver resistance error for 4 ~ 20mA two wire loop receiver resista…]]></description>
<pubDate>2016-08-18 13:58:02</pubDate>
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<item id="16">
<title><![CDATA[Specification for power transmitter]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=55]]></link>
<description><![CDATA[Transmitter is a parameter to be measured (current, voltage, active power, reactive power, active power, reactive power, frequency, phase, power factor, DC voltage, DC current) conversion according to the linear proportional DC current or voltage (pulse output energy) measurement instrument. It is widely used in electric power, petroleum, coal, metallurgy, railway, municipal government and other departments of the electrical measurement, automatic control and scheduling system. The analog signal transmitter output current new international standard value of 4 ~ two 20mA loop wire i…]]></description>
<pubDate>2016-08-18 13:56:57</pubDate>
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<item id="17">
<title><![CDATA[Technical parameters of temperature transmitter]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=54]]></link>
<description><![CDATA[1, thermocouple temperature transmitter technical indicatorsPlease inputInput type: K, E, S, B, T, J thermocoupleTemperature range: (pictured below)Input impedance: ≥ 20KΩCold end temperature compensation: -15 ~ +75 CThe outputOutput current: 4 ~ 20mAOutput circuit power supply: 12 ~ 30VDCMinimum operating voltage: 12VDCThe relationship between load resistance and power supply:The comprehensive parameterStandard accuracy: ± 0.2%Temperature drift: basic error /10Thermal resistance lead compensation: ± 0.1% (0 ~ 10&Omega);Load change effects: ± 0.1% (allowable load range)Power change…]]></description>
<pubDate>2016-08-18 13:56:15</pubDate>
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<item id="18">
<title><![CDATA[Function of temperature transmitter]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=53]]></link>
<description><![CDATA[Device for converting physical measurement signal or common electrical signal into standard electric signal output or capable of outputting in communication protocol. Temperature transmitter is a kind of instrument which can convert the temperature variable to the standard output signal which can be transmitted. The current transmitter converts the AC current of the main circuit into a constant current loop standard signal and is continuously transmitted to the receiving device.Temperature current transducer is the temperature sensor signal into a current signal, connected to the t…]]></description>
<pubDate>2016-08-18 13:55:49</pubDate>
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<item id="19">
<title><![CDATA[Intelligent differential pressure transmitter]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=52]]></link>
<description><![CDATA[For the super - performance measurement, pressure, differential pressure, liquid level, flow measurementThe digital accuracy: + (- 0.05%)The simulation accuracy: + (-) 0.75%+ (-) 0.1%F.S- Performance: + (-) 0.25F.SStability: 0.25% - 60 months- range: 100:1The measurement rate: 0.2SThe miniature (2.4kg) stainless steel flange, easy to installThe process of connecting the compatibility with other products, to achieve the best measurementThe world&#39;s only using H alloy sheathed sensor (patent technology), achieved excellent cold and thermal stabilityAdopt 16 bit computer intelligen…]]></description>
<pubDate>2016-08-18 13:54:15</pubDate>
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<item id="20">
<title><![CDATA[Differential pressure transmitter]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=51]]></link>
<description><![CDATA[High - precisionZero - range, external adjustable- good stabilityUp to 500%, up to 600% - positive transfer negative transfer- wire systemThe adjustable damping resistance, overvoltageThe design of solid state sensorsNo mechanical moving parts, less maintenanceThe light weight (2.4kg)The full range of unified structure, strong interchangeabilityThe small (166mm high)Optional - contact medium diaphragm materialAnti - unilateral pressureThe low pressure casting Aluminum Alloy shell]]></description>
<pubDate>2016-08-18 13:53:50</pubDate>
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<item id="21">
<title><![CDATA[Temperature sensor selection]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=50]]></link>
<description><![CDATA[1, whether the temperature of the object to be recorded, alarm and automatic control, the need for remote measurement and transmission;2, the scope of temperature measurement and accuracy requirements;3, temperature measuring element size is appropriate;4, in the case of the temperature of the measured object with time changes, the temperature measurement device can meet the requirements of temperature measurement;5, the object of the environmental conditions on the temperature measuring element is damaged;6, such as price protection, the use is convenient.]]></description>
<pubDate>2016-08-18 13:50:40</pubDate>
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<item id="22">
<title><![CDATA[Working principle of temperature sensor]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=49]]></link>
<description><![CDATA[Metal expansion principle design sensorThe metal will produce a corresponding extension after the change of the ambient temperature, so the sensor can convert the signal in different ways.Bimetal SensorBimetal sheet is made up of two pieces of metal with different coefficient of expansion, and with the change of temperature, the material A is higher than the other one. The curvature of the bend can be converted into an output signal.Bimetal rod and metal tube sensorWith the increase of temperature, the metal tube (material A) increased in length, without expansion steel (metal B) l…]]></description>
<pubDate>2016-08-18 13:48:29</pubDate>
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<item id="23">
<title><![CDATA[Usage and maintenance of bimetal thermometer]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=48]]></link>
<description><![CDATA[1, WSS series bimetallic thermometer in custody, installation, use and transport process, should try to avoid collision protection tube, do not make sure. When installing, it is strictly prohibited to twist the instrument case.2, the instrument should be in -30 DEG C to 80 DEG C ambient temperature normal work.3, the temperature of the instrument often work best in the range of 1/2 ~ 3/4.4, double metal thermometer protective tube immersed in the measured medium length must be greater than the length of the temperature sensing element, the general immersion length is greater than 1…]]></description>
<pubDate>2016-08-18 13:47:51</pubDate>
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<item id="24">
<title><![CDATA[Characteristics of bimetal thermometer]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=47]]></link>
<description><![CDATA[Bimetallic thermometer has the advantages of fast response, small size, good linearity, stability, and some foreign products have high temperature performance.The thermoelectric potential of bimetallic thermometer is only related to the thermoelectric properties of thermoelectric material and the temperature difference between two ends.Using the same kind of conductor or semiconductor to form a circuit, it will not produce thermal potential.Thermocouple two contact temperature T, T0, if T=T0, thermocouple thermoelectric potential is zero. The intermediate temperature law lays the f…]]></description>
<pubDate>2016-08-18 13:46:21</pubDate>
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<item id="25">
<title><![CDATA[Main features of thermocouple]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=46]]></link>
<description><![CDATA[1, simple assembly, easy replacement;2, pressure spring type temperature sensor, good seismic performance;3, high measurement accuracy;4, large measurement range (200 to 1300 DEG C, under special circumstances 270 to 2800 DEG C);5, fast thermal response time;6, high mechanical strength, good pressure resistance;7, high temperature can reach 2800 degrees;8, long service life.]]></description>
<pubDate>2016-08-18 13:41:06</pubDate>
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<item id="26">
<title><![CDATA[Thermocouple temperature condition]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=45]]></link>
<description><![CDATA[The utility model relates to a temperature sensing element, which is a primary instrument. The closed circuit composed of 2 different components of the conductor, due to different materials, different electron density to produce electron diffusion, stable equilibrium after the potential. When the ends of the gradient temperature, the loop current will produce, produce thermal electromotive force, temperature difference is greater, the greater the current. After the thermal electromotive force measured can know the temperature value. A thermocouple is actually an energy converter th…]]></description>
<pubDate>2016-08-18 13:39:43</pubDate>
</item>
<item id="27">
<title><![CDATA[Pressure detection and transmission]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=44]]></link>
<description><![CDATA[I. overviewPressure is one of the important parameters in industrial production, in order to ensure the production and operation of parties, to monitor and control the pressure, but it should be noted that the pressure, pressure is actually physical concept, namely the role in the vertical force per unit area.In pressure measurement, the absolute pressure, surface pressure, negative pressure or vacuum. The so-called absolute pressure refers to the role of the measured medium in the container unit area of all the pressure, with the symbol pj. An absolute pressure gauge is used to me…]]></description>
<pubDate>2016-08-18 11:29:19</pubDate>
</item>
<item id="28">
<title><![CDATA[Classification of temperature measuring instruments]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=43]]></link>
<description><![CDATA[The temperature measuring instrument can be divided into two categories: contact and non-contact. General contact temperature measuring instrument for temperature measurement instrument is simple, reliable, high measurement precision; but because of the temperature element and the measured medium need sufficient heat to help Kong needs time to reach thermal equilibrium, so the delay phenomenon of temperature, and high temperature resistant material limit, cannot be applied to temperature measurement is high. Non contact temperature measurement instrument is used to measure the temp…]]></description>
<pubDate>2016-08-18 11:28:35</pubDate>
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<item id="29">
<title><![CDATA[Application principle of thermocouple]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=42]]></link>
<description><![CDATA[Thermocouple is one of the most commonly used temperature detection devices in industry. Its advantage is:High measuring accuracy. Because the thermocouple is directly contacted with the measured object, it is not affected by the medium.Wide measuring range. The commonly used thermocouple from -50~+1600 C can be continuous measurement, some special thermocouple minimum measured to -269 degrees (such as gold, iron nickel chromium) up to +2800 DEG C (such as tungsten rhenium).Simple structure, easy to use. Thermocouples are usually made up of two different metal wires, and are not li…]]></description>
<pubDate>2016-08-18 11:27:56</pubDate>
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<item id="30">
<title><![CDATA[Common faults in the use of electromagnetic flowmeter]]></title>
<link><![CDATA[http://en.ahxhn.cn/index.php?case=archive&act=show&aid=41]]></link>
<description><![CDATA[The common faults in the operation of electromagnetic flowmeter, some are due to instrument components damage caused by fault, some fault caused by improper selection, improper installation, environmental conditions, fluid properties and other factors, such as wave, instrument accuracy decreased or even damage etc.. It can generally be divided into two types: installation and commissioning of the fault (debugging period failure) and the normal operation of the fault (run-time failure).(1) during the debugging period, the failure of debugging is expected to appear in the instrument …]]></description>
<pubDate>2016-08-18 11:11:43</pubDate>
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