High temperature melt pressure sensor is mainly in the high temperature fluid medium pressure measurement and control, mainly used in rubber machinery, polyester and other equipment, in which an important role. Therefore, the correct use and maintenance became known as the operation staff. Damage to correct installation usually high temperature melt pressure transducers are due to its installation position inappropriate caused. If the sensor to installation in the small hole or irregular shape of Kong Zhong, Crankshaft Position Sensorsit is possible to cause vibration membrane sensor has been damaged by the impact. Select the appropriate tools to process the mounting hole, is helpful to control the installation hole size. In addition, mounting torque suitable to form a good seal. But if the installation torque is too high and is easy to cause the detachment of high temperature melt pressure sensor, in order to prevent the occurrence of this phenomenon, usually in the sensor is installed before the threaded portion with anti off compounds. In the use of such compounds, even if the installation torque sensor is very high, is also very difficult to be moved. Check the installation hole size if the installation hole size doesn't fit, high temperature melt pressure sensor in the installation process, the threaded portion of it is susceptible to wear. This will not only affect the sealing performance of equipment, but also makes the sensor can not fully play its role, and even may cause security risks. Mounting holes are suitable only to avoid the thread wear, usually by mounting hole measuring instrument to detect the mounting holes can be, in order to make the appropriate adjustments. Select the appropriate position when the installation Engine Water Temperature Sensor of high temperature melt pressure sensor is too close to the line, not the molten material may wear sensor at the top; if the high temperature melt pressure sensor is installed in too on the location, the stagnation region between the high temperature melt pressure sensor and screw rod stroke may produce melt materials, melt where possible degradation, pressure signal may also transfer distortion; if the high temperature melt pressure sensor too deeply into the machine barrel, screw may be in the rotation process touch the high temperature melt pressure sensor at the top of the damage caused by. In general, the barrel temperature melt pressure sensor can be located in front of the screen, melt pump before or die. Keep mounting hole mounting hole cleaning to keep clean and prevent frit blockage to ensure the normal operation of equipment is very important. Before being clean extruder, melt pressure sensor all should be removed from the barrel to prevent damage. In the dismantling of the sensor, the melt may flow into the mounting hole and hardened, if the melt these remains have not been removed, when installing the high temperature melt pressure sensor again it may cause the top damage. A cleaning tool package to the melt residue removal. However, the cleaning process repeated may deepen the damage of high temperature melt pressure sensor mounting holes caused by. If this happens, we should take measures to increase the high temperature melt pressure sensor in the mounting hole position. To avoid low interference in the extrusion process, the plastic raw materials, from the solid to the melt state shall have adequate "soak time". If the extruder at the start of a pre production has not yet reached operating temperature, so the high temperature melt pressure sensor and the extruder will be a certain degree of damage. In addition, if the high temperature melt pressure sensor was removed from the extrusion machine cold, material may damage caused by vibration membrane adhesion in a high temperature melt pressure sensor at the top. Therefore, before removing the high temperature melt pressure sensor, should confirm the barrel temperature is high enough, the material inside the machine barrel in softening state. Carefully clean
In the cleaning of the extruder barrel with a wire brush or special compounds, high temperature melt pressure sensor should be all removed. Because of the vibration film the two cleaning methods may cause high temperature melt pressure sensor damage. When the tube is heated, should also be high temperature melt pressure sensor is removed and a soft cloth to wipe the top wear no holes, and high temperature melt pressure sensor also need to use the drill guide sleeve clean and clean. Keep dry despite the circuit design of high temperature melt pressure sensor can withstand the harsh environment of the extrusion processing, but the majority of high temperature melt pressure sensor is not absolutely waterproof, in the humid environment is not conducive to the normal operation of. Therefore, to ensure the water cooling device of extruder barrel of water will not leak, otherwise it will cause adverse effects on the sensor. If the sensor to exposure to water or damp environment, should choose a strong special high-temperature melt pressure sensor water repellency. To prevent the pressure overload even overload design sensor measurement range of the highest can reach 50% (beyond the ratio of the maximum range), from the viewpoint of safety equipment operation should be considered to avoid risks, the best choice of the measured pressure in the high temperature melt pressure within the sensor range. In most cases, the best range of selected high temperature melt pressure sensor should be 2 times the measured pressure, so that even if the extruder operating at extremely high pressure, can also avoid the damage of high temperature melt pressure sensor.
Camshaft position sensor, also known as the cylinder identification sensor, camshaft position sensors are generally expressed by CIS. Camshaft position sensor function is to collect the valve camshaft position signal, and input ECU, in order to identify the ECU compression TDC cylinder 1, thereby performing sequential fuel injection control, ignition timing control and knock control.
Cooling Temperature Sensor

Cooling Temperature Sensor
2014年3月23日星期日
2014年3月17日星期一
YLE Camshaft Position Sensor Disadvantages: three parasitic capacitance effect
Initial capacitance capacitive weighing sensor is small, and the lead capacitance, electronic circuit connected with the sensor and the electronic circuit of the stray capacitance and inside the sensor plate and the surrounding conductors capacitors and other so-called YLE Auto Temperature Sensormissing large parasitic capacitance, not only reduces the sensitivity of the sensor, and the capacitance is often random change, will make the instrument work is not stability, influence the accuracy of measurement. So the cable selection, installation, connection method has strict requirements. For example, with good shielding property, its small distributed capacitance of high frequency electric wire as the lead, lead is thick and short, to ensure the instrument stray capacitance is small and stable and so on, otherwise it can not guarantee the high measurement precision.
It should be pointed out that, along with the material, technology, electronic technology, especially the rapid development of technology, the capacitance weighing sensor has been developing and YLE Engine Coolant Level Sensor constantly overcome shortcomings. The capacitance sensor is becoming a high sensitivity, high precision, low pressure sensor in dynamic, and some special measurement has a promising.
It should be pointed out that, along with the material, technology, electronic technology, especially the rapid development of technology, the capacitance weighing sensor has been developing and YLE Engine Coolant Level Sensor constantly overcome shortcomings. The capacitance sensor is becoming a high sensitivity, high precision, low pressure sensor in dynamic, and some special measurement has a promising.
2014年1月12日星期日
Low will affect the long-term high-grade automotive oxygen sensor sensitivity
Sensor There are many types of internal use , wherein the oxygen sensor in the engine that is essential. Recently, some users say the car will affect the long-term high-grade low- oxygen sensor sensitivity , that really so? Xiaobian to tell you the answer .The formation of coke and coke formation on the general impact of the engine for three reasons : First, the use of " low- grade " bad driving habits. There prolonged idling and low-speed driving. On the other hand is mainly the use of the purity and quality of gasoline . Carbon impact is mainly reflected in the engine cold start problems , less than the required cold idle speed, idle severe cold will turn off after the hot car idling low . Also lead to decreased engine power , poor acceleration , fuel consumption increases ; engine exhaust emission deterioration , it also shortens the spark plugs, oxygen YLE Engine Position Sensor, catalytic ternary is life. The most important is the carbon of the engine will cause jamming of the piston ring , piston ring sealing performance , resulting in increased oil consumption , resulting in engine burning oil , shortening the life of the engine . Remove carbon deposits and effects of regular cleaning methods are generally divided into three steps , fuel injectors and intake cleaning can remove part of the coke, and be able to soften deep coke, oil tank can add agent to sustained cleaning carbon recovery nozzle atomization , keeping the oil flow, restore the power of the engine, eliminating the engine cold start problems , unstable idle , such as failure to improve fuel economy and extend spark plugs, oxygen YLE Crankshaft Position Sensor Replacement, catalytic converters , engine life. When Wei -off power enhancer plus 5% of the amount of oil available in the market mix , polymer nanospheres hundreds of millions in the role of " Brownian motion " , the heat will be more than ten meters per second velocity, so that it can be in the lubricant evenly, stable distributions. Meanwhile , using the kinetic energy given to the thermal motion of the continuous passage of oil and mechanical impact surface of the deposited abrasive, carbon and grease produced potent " physical washing " effect, restored or ensure clean working environment of the engine , eliminating the impurities possibility of causing engine failure. Since a huge amount of polymer nanoparticles uniformly distributed in the lubricant to add gravel becoming similar to cement concrete strength enhancement principle , making significantly improve the strength of the oil film , oil seal , seismic performance greatly enhanced. Because of poor air tightness engine , the larger the gap caused by channeling oil under channeling combustion residue , corrosion , oil aging failures can quickly eliminate or alleviate . In addition, due to increased cylinder pressure , exhaust valve scavenging momentum greatly improved , making the exhaust pipe carbon is strongly purge , exhaust pipes become very clean. Measures to prevent carbon generated models to choose the grade of gasoline according to the manufacturer 's instruction manual , but it should be noted that the label represents gasoline octane gasoline , reflecting the gasoline antiknock quality of gasoline and gasoline can not label On the phase problem and recommended to the regular reputable gas station , due to crude oil and refinery process , coupled with the sale of commercial gasoline market is not a high -quality gasoline, gasoline components containing sulfur , phosphorus, especially in the higher olefin content and oxidation stability is poor, olefin oxidation condensation will form a gelatinous when the engine of internal combustion work, and the engine crankcase exhaust and intake of dust particles in the collection , the throttle body , intake manifold , etc. to form coke. Also driving habits and conditions of use is also very important , bad driving habits " low grade " driving causing incomplete combustion gas mixture easily generated carbon ; avoid prolonged engine idling , the vehicle for a long time at low speeds , should always run a run high-speed , high-speed driving can make mixed combustion , improved fuel economy and can reduce coke formation, to restore the sensitivity of the oxygen sensor , clean the spark plug electrodes between carbon and catalytic converters surface.
2013年12月29日星期日
Bio- class sensor uses and effects in the food industry
The biosensor is a very special detection sensors , mainly for monitoring of vital objects and chemicals . In many areas of biosensors sideways must have the use of Cooling Temperature Sensor in which the food industry is also bound to use the . So biosensor uses its effect in the food industry , what does ? Following small to explain in detail . Biosensor analysis of the use of food containing food ingredients, food additives determination , harmful toxins and other fresh food analysis . A food ingredient analysisIn the food industry , the content of glucose is an important objective measure of the degree of sophistication and storing fruit of life expectancy . The enzyme electrode Crankshaft Position Sensor developed can be used to analyze wine, apple juice , jam and honey glucose . Other sugars, such as fructose , beer, malt wort , have sophisticated measuring sensor .Niculescu , who developed a biosensor called amps can be used to detect alcohol content drink guessed . Such a biosensor is buried in the alcohol dehydrogenase protein with polyethylene , and the share of the polymer is not the same enzyme can affect function of Crank Shaft Position Sensor . In the current experiments , the biosensor to measure alcohol limit for lnM.Analysis of two food additivesGenerally used in the food industry sulfite bleaching agents and preservatives , the enzyme electrode current- dioxide sulfite oxidase is selected item made ??active for the determination of the content of sulfite in foods , the linear measurement scale is 0 - quartic 6 mol / L. Again drinks , puddings , and other foods in the past sweeteners , Guibault other selected enzymes aspartate ammonia electrode contact measurement , the linear scale of minus five square -1xlO 2x10 negative cubic mol / L. Furthermore, the biosensor is also useful for measuring colors, and emulsifiers reported.3 pesticide residue analysisOver the years , everyone on pesticide residues in food increasingly focused questions , governments are also stepping on pesticide residues in food testing operations .Yamazaki , who sent a clear determination of the use of artificial enzyme organophosphorus insecticides amperometric biosensors , the use of organophosphorus pesticides hydrolase, nitro phenol and phenol detection limit diethyl seven negative side 10 mol, measured at 40 ℃ only 4min. Albareda such as glutaraldehyde cross-linking method using acetylcholine esterase fixed carbon paste electrode wire appearance, made ??a detectable concentration of negative 10 power of 10 negative paraoxon and 10 mol / L of 11 th mol / L of carbofuran biosensors can be used for the direct detection of residual water and juice samples of two pesticides.4 identification of microorganisms and toxinsThe presence of pathogenic microorganisms in food well-being of consumers will bring great harm , not only vegetarian food poisoning and toxicity of many varieties , most of them have carcinogenic , teratogenic, sudden changes in effect, therefore , strengthen the food pathogen microorganisms and toxins detection is crucial .Eating beef is very simple coli 0157.H7. Infection, and therefore , the demand for rapid detection and protection active approach to a class of E. coli bacteria 0157.H7 . Kramerr et al discuss fiber optic biosensor can detect within a few min food pathogens ( such as E. coli 0157.H7.), While the traditional approach needs a few d. This biosensor detection of pathogens from the pathogen from the sample obtained from scratch and make it independent of the growth in the medium altogether just 1d moment , while the traditional approach needs 4d.There is also a fast -active immune biosensor can be used to measure the milk residues of ivermectin , which is the reaction cytoplasmic genome, signal transmission through the optical system . The detection limit has been reached for 16.2ng/ml. One day be able to detect 20 milk samples .Detection five food freshnessFood industry, especially the freshness of food fish , fresh meat detect a primary objective is to assess the quality of the food . Volpe et al Yin oxidase yellow winded biological active materials, hydrogen peroxide electrode contact , through the determination of a past occurrence of fish muscle phosphate degradation process (IMP) muscle celecoxib (IIXR) and sub- yellow throat Yin (HX) concentration and then evaluate the freshness of the fish , the linear size of 5x10 -2x10 power of minus 10 th power minus 4 mol / L
2013年12月22日星期日
As the car is inseparable from the sensor fish without water
As the car is inseparable from the sensor fish without water , some users may be asked to sensors in the car really so important? Today who say that we should first role in the automotive air flow Crankshaft Sensor Replacement .We know that the fuel injection of correct starter air - fuel ratio to ensure complete combustion of the fuel or the fuel consumption , it is necessary to monitor the air flow sensor . Air flow sensor has become one of the most important automotive sensors, it determines vehicle fuel mileage and exhaust emissions fuss important role , which monitors the amount of air entering through the inlet inside the boot , and convert it into voltage signal is then transmitted to the starter control module. Starter control module based on a signal transmitted in the past to determine how much fuel and air mixture required and the fueling system to inform automotive spark plug when the ignition for each cylinder .When the car accelerates air flow Engine Water Temperature Sensor response is a sign of stupidity wear or failure , but also that the starter does not inject fuel moderate , not too little is too much.By immediate fuel price, a functioning air flow sensor may reduce the frequency of operation of the pump with the frugal fuel quantity is worth the price of the sensor. Therefore, if the air flow sensor failure on the car is worth the change .
2013年12月17日星期二
Smart grid development is inseparable from the current sensor security
Urban consumption continued to increase , the construction of the smart grid has become an inevitable trend , however, also need to get the power of security, this time showing the current sensor indispensable role . Also in the process of current Engine Water Temperature Sensor technology , and other aspects of the design and effectiveness of continuous improvement in the industry for more than the current flow measurement has a major role Fiber-optic current sensors for example, China launched a XDGDL-1 fiber-optic current sensor system to achieve a full digital line current sensing loop control system , with good stability and linearity and high sensitivity to meet a large range of process precision measurement requirements.Meanwhile , the system developed a field- winding telescopic structure, easy toinstall, can avoid the interference of stray magnetic fields , bus eccentricity measurement error is less than plus or minus 0.1 %, to achieve a high-precision signal conversion program for the rectifier control devices provide high-precision analog and digital communication interface standard .With the construction of the smart grid , the requirements for increasingly high current Engine Cooling Temperature Sensor , current sensor in the future to sensitivity, stability , and many other improvements , to move higher sensitivity , stronger immunity , lower power , smarter design, more compact , integrated and improved temperature stability direction, the better for the smart grid construction and upgrade services.
2013年12月8日星期日
Soil temperature and humidity sensors for agricultural production
I do not know there is no species around greenhouses , greenhouses which are wall-mounted temperature sensor , use it to protect the greenhouses to maintain the temperature and humidity , is to allow the plants to grow better , but the temperature is not enough light use she also need suitable soil temperature and humidity , how to make sure the soil temperature and humidity it, look below . To measure soil temperature and humidity are generally using a plug-in temperature and humidity Engine Water Temperature Sensor , of course, this plug-in temperature and humidity sensors plug-in temperature and humidity sensors and we usually call on the industry is different . General soil temperature and humidity sensor is inserted relatively small, and temperature and humidity sensors used on different industries , general soil temperature and humidity sensors have several probes and probe length is not the same , so in order to better measure the different soil depths temperature and humidity . Soil temperature and humidity sensors are generally good corrosion resistance, often because of the need to insert into the soil , so the soil temperature and humidity Car Temperature Sensor probes generally use 316 L Specialty Steel . With the country now have the attention of agriculture , soil temperature and humidity will further be adopted to serve agriculture , of course, now the soil temperature and humidity sensor price is very expensive , generally require thousands or even tens of thousands of prices, so that only relatively large farms will be used , with the further development of sensor technology has been sent , soil temperature and humidity sensors new materials prices fell just around the corner , it is also bound to procure temperature and humidity sensors to small self-employed . Soil temperature and humidity will use its excellent performance to serve agricultural production .
Piezoelectric charge output accelerometer case
Piezoelectric accelerometer case charge output, can be used with any kind of a charge amplifier or a high-impedance input capture function has to match the pre-charge, charge amplifier type more, there is a single, multi-channel, integral, quasi-static, which should be selected according to the measurement requirements.There are exceptions, such as direct access to the output signal of the piezoelectric Engine Water Temperature Sensor has a high resistance properties of the three instruments (such as oscilloscopes), the same signal can be measured, but the impedance matching is not enough, only a qualitative understanding of the dynamic situation.ICP-type accelerometer built-in constant current adapter specifically, a single instrument available for constant current power supply and signal output more than just an acceleration car sensor. Part of the data collection instrument also comes with constant function directly with ICP sensor is equipped with.Common charge output sensors such as having a constant current output of data collection facilities, can be JM3861 constant fitness conditioner.Dual power acceleration sensor can provide dual power supply or acquisition with dual DC power supply.
2013年12月1日星期日
Bimetal temperature sensor
Ferredoxin-type thermistor temperature sensor used to control the radiator cooling fan mounted on the radiator coolant circulation passage.
Maintenance Method Thermal ferrite Engine Water Temperature Sensor are as follows:
When the engine coolant temperature is higher than the predetermined value, if the radiator cooling fan is not running, you should check the radiator cooling fan circuit. First check the wiring connections, check for open circuit, short circuit, and the work of the Working fan relay and thermal ferrite temperature sensor.
Check Shaft Position Sensor thermal ferrite. The thermal ferrite temperature sensor placed in the container, connect the multimeter, while heating at work to check the sensor. Under normal conditions, when the coolant temperature is the predetermined temperature, the sensor is in a conducting state, the meter indicates 0 Ω. Coolant temperature is higher than the predetermined temperature, the sensor should be turned off (non-conducting sensor), the meter indicates the resistance ∞, if the number of the ferrite temperature thermal sensor is damaged and should be replaced.
Maintenance Method Thermal ferrite Engine Water Temperature Sensor are as follows:
When the engine coolant temperature is higher than the predetermined value, if the radiator cooling fan is not running, you should check the radiator cooling fan circuit. First check the wiring connections, check for open circuit, short circuit, and the work of the Working fan relay and thermal ferrite temperature sensor.
Check Shaft Position Sensor thermal ferrite. The thermal ferrite temperature sensor placed in the container, connect the multimeter, while heating at work to check the sensor. Under normal conditions, when the coolant temperature is the predetermined temperature, the sensor is in a conducting state, the meter indicates 0 Ω. Coolant temperature is higher than the predetermined temperature, the sensor should be turned off (non-conducting sensor), the meter indicates the resistance ∞, if the number of the ferrite temperature thermal sensor is damaged and should be replaced.
Working principle of temperature sensors
Working principle of temperature sensors1, the thermal resistance: in accordance with the principles of the resistance wire of the temperature change
2, a thermocouple: a two conductor contact, the junction will have a stable electromotive force; same conductor ends at different temperatures, between the both ends of the electromotive force of a certain size
3, liquid thermometer: is the use of temperature-sensitive liquid thermal expansion of the principle of work
Most of Car Temperature Sensor resistive sensor,
That is, he himself is a resistor, as the temperature changes, the corresponding change in the resistance value, the resistance change of the desired temperature and Crank Shaft Position Sensor is a linear relationship, but which does not actually exist, the general performance to have good linearity within a certain temperature range performance. So when you want to select the temperature sensor for specific models of the original operating temperature range.
2, a thermocouple: a two conductor contact, the junction will have a stable electromotive force; same conductor ends at different temperatures, between the both ends of the electromotive force of a certain size
3, liquid thermometer: is the use of temperature-sensitive liquid thermal expansion of the principle of work
Most of Car Temperature Sensor resistive sensor,
That is, he himself is a resistor, as the temperature changes, the corresponding change in the resistance value, the resistance change of the desired temperature and Crank Shaft Position Sensor is a linear relationship, but which does not actually exist, the general performance to have good linearity within a certain temperature range performance. So when you want to select the temperature sensor for specific models of the original operating temperature range.
2013年11月24日星期日
Position sensor is composed of three parts of a brushless DC motor system of
Position sensor is composed of three parts of a brushless DC motor system, but also a symbol from the brush DC motor. Its role is to position in the movement detection in the process of the main Car Temperature Sensorrotor, rotor magnet pole position signal into electrical signal, provide the information for the correct logic switching circuit, the turn-on and cut-off control them, which cause the current to the armature winding of the motor changes with the rotor position in order of commutation, car sensorform a rotating magnetic field the air gap step type, drive permanent magnet rotor rotating continuously. Application of position sensor, reduce noise, improve the service life of motor operation and performance of the motor, at the same time to reduce the energy dissipation effect.
Photoelectric type crankshaft position sensor is installed in the distributor
Photoelectric type crankshaft position sensor is installed on the distributor, which is composed of signal generator and signal light hole plate. The signal panel and electrical axis
To rotate together, there are 360Camshaft Position Sensor lithographic gap signal disc outer ring, signal generating crank angle 1 °; a 6 light holes spaced 60 DEG are uniformly distributed within the signal generated by, crank angle 120 °, 1 of which aperture is wide, to produce a signal relative to the TDC of cylinder 1. Signal generator is arranged on the shell of distributor, is composed of two light emitting diodes, two photosensitive diode and circuit. The light emitting diode is opposite to the photosensitive Crankshaft Positioning Sensordiode. Between the signal disc is positioned on the light emitting diode and photodiode, because the light hole signal disc, the light and shade alternating phenomenon. When the beam of light emitting diode according to the photodiode, photosensitive diode voltage; when the light emitting diode beam is blocking, photosensitive diode voltage of 0. The voltage signal shaping amplification circuit part, namely to electronic control unit for conveying the crank angle is 1 ° and 120 ° signal, the electronic control unit calculates the engine speed and crankshaft position according to the signal
To rotate together, there are 360Camshaft Position Sensor lithographic gap signal disc outer ring, signal generating crank angle 1 °; a 6 light holes spaced 60 DEG are uniformly distributed within the signal generated by, crank angle 120 °, 1 of which aperture is wide, to produce a signal relative to the TDC of cylinder 1. Signal generator is arranged on the shell of distributor, is composed of two light emitting diodes, two photosensitive diode and circuit. The light emitting diode is opposite to the photosensitive Crankshaft Positioning Sensordiode. Between the signal disc is positioned on the light emitting diode and photodiode, because the light hole signal disc, the light and shade alternating phenomenon. When the beam of light emitting diode according to the photodiode, photosensitive diode voltage; when the light emitting diode beam is blocking, photosensitive diode voltage of 0. The voltage signal shaping amplification circuit part, namely to electronic control unit for conveying the crank angle is 1 ° and 120 ° signal, the electronic control unit calculates the engine speed and crankshaft position according to the signal
2013年11月21日星期四
How tension sensor wiring
How tension sensor wiring ?First determine the monitor 's power Engine Water Temperature Sensor interface positive power of negative , positive feedback , negative feedback , positive signal, negative , if it is 6-wire transmission control , measure Car Temperature Sensorresistance smallest two lines are the power positive feedback positive ; the power of negative , negative feedback , after receiving the sensor load monitor , measure another two line voltage ( mV ) signal is connected to monitor the positive and negative connection monitor signal negative ; if the value is four lines , you need to monitor power is and feedback is shorted , the power losses and negative feedback shorted with a multimeter measuring Shaft Position Sensor four lines, of which the largest two resistor values is the power , the other two is the signal . Depending on the sensor origin, can lead color judgment, within the country manufacturers usually red for the power supply positive , black is negative power supply , green for the signal is positive, white is the signal negative ; Europe produces sensors generally green as the power supply positive , black for the power negative , white for the signal is positive, red is the signal negative .
Tension sensor performance indicators which
Tension sensor performance indicators which ?Mainly include linearity error , hysteresis error , repeatability error , creep , zero temperature characteristics and sensitivity temperature characteristics. Tension Crankshaft Positioning Sensorhas the advantage of high accuracy , wide measurement range , long life , simple structure , frequency response Coolant Temperature Sensor characteristics, and can work in harsh conditions , easy to realize miniaturization, holistic and species diversification . The disadvantage is that there is greater for large strain nonlinear , the output signal is weak , but you can take certain compensation measures. Therefore, it is widely used in automatic testing and control technology .
2013年10月27日星期日
Proximity Sensor Selection Tips
Ground sensor applications has been particularly broad application of its model , different functions are also different, its main feature is the small size, easy to install, inexpensive , how do we determine what you want to do a proximity sensor to specifically look . First , the proximity sensor according to the measured object by selecting the material . If the required sensing distance is shorter , inductive proximity sensors can be easily and efficiently detect any type of metal objects. If the distance , you can use the photoelectric proximity sensors. If the sensor is very far away , it is best to use on the radio or reflective photoelectric sensors. Secondly, since the capacitive proximity sensor can detect the material is very much, but the sensing distance corresponding to recently, and inductive Camshaft Positioning Sensor similar . If you use a capacitive proximity sensor , then the volume of the object to be detected can not be too small to meet the minimum sensing object of the sensor volume requirements. Ultrasound and Engine Temperature Sensor can detect a wide range of materials , and detection distance is relatively long . However, in the detection of objectswith irregular surfaces may cause problems . Finally , and more for the Motor Temperature Sensor selection criteria , or to rely on the characteristics of the measured object , and to take into account the sensor installation and environmental factors . Once all these issues are clear , then it can be selected from a number of sensors a suitable type. Understanding of the proximity sensor selection step that we can more quickly and accurately selected their own
needs sensors. Of course, this is just a selection procedure , to treat specific problems but also specific coping .
needs sensors. Of course, this is just a selection procedure , to treat specific problems but also specific coping .
Embedded temperature sensor to continuously improve the quality of military equipment
With the continuous improvement of the quality of military equipment , micro- computers, electronic circuit system more and more used equipment and technology fields. Therefore weaponry on the ambient temperature requirements are increasingly demanding , especially in combat conditions, the ambient temperature directly affects the combat capability of weapons and even weapons for their own safety , as the sensor technology in military equipment on the application, this problem will be resolved using the temperature sensor . Embedded temperature sensor is a set of embedded technologies and intelligent sensor technology withintegrated temperature sensor , not only can be done by conventional sensors for measuring the temperature of the measurement , and can use computer technology to collect raw data for processing , with a small, processing speed, high intelligence and high degree of integration flower is the trend of modern sensor . Camshaft Positioning Sensor are generally composed of three parts : the unit under test , sensitive unit and a data acquisition unit. In fact sensitive unit and a data acquisition and processing unit is an integral part of the smart sensor , a temperature sensor is embedded in Motor Position Sensor based on the increased functionality. With computer technology, sensor technology , measurement and control technology as well as the continuous development of embedded technology , embedded Coolant Temperature Sensor in military equipment will be more widely on the application , which will bring the overall strength of our army a qualitative leap , so that army in modern warfare handy , to defend territory.
2013年10月24日星期四
How to install vibration velocity sensors
Speed sensor vibration velocity sensor , the vibration velocity is typically used to measure the vibration of the bearing , but there are a few cases in the shaft for measuring vibrations. How to install vibration velocity sensors do ? In the measurement of vibration velocity , if sensor is installed incorrectly or is not securely installed , the measurement results will cause distortion due to vibration or damage caused by the speed sensor . So we have to consider a good choice for vibration velocity sensor is installed. When the speed sensor is used to measure shaft vibration when installed in the field are usually taken with the hand , sticky water plasticine magnetic disk fixed , bolted in several ways . In the temporary vibration measurement , in most cases, hand sensors way , this method measured flexible , easy to use , especially when the number of the lack of vibrationEngine Coolant Temperature Sensor interchangeability bad, has a special advantage ; And this the disadvantage is that the test measurement error is relatively large, and the intensity of work is relatively large . Current speed sensor when measuring the vibration velocity , usually people will use the Engine Coolant Temp Sensor fixing screws directly on the bearing , not only can reliably measure the bearing at the top of the vibration in three directions , but also can be measured in two directions perpendicular to the plane of vibration this method is the best way to install the measure . Also has a different installation methods , due to the installation of the various conditions to determine that we have a good effect on manually installing a useful little plasticine paste the speed sensor is also more convenient , you need to note that plasticine vibration Motor sensor can not be pasted into the vertical plane , and can only be fixed on a horizontal surface , as affected by temperature adhesive force , high temperature and the lower the adhesive strength will be significantly reduced, so it is not suitable for fixing the high temperature high pressure turbine rotor and reel measuring wheel speed sensor bearing ; winter cold start , the bearing temperature is too low and it is not used . There is a similar permanent magnet sucker fixed speed sensor mounting , etc., when we observe the installation follow the rules is to measure the needs , the need to make sense of your environment changes , so that the vibration velocity sensor mounted only purpose is to more has the effect of reducing unnecessary errors
What are the application Humidity Sensor
Humidity sensor is able to feel the water vapor content in the gas and used to convert the output signal of the sensor. With the realization of modernization , it is difficult to find a field unrelated to the humidity , the humidity sensor for measuring or controlling the relative humidity of the gas or absolute humidity, dew point and so on. Can indirectly control the temperature . Below its typical application for an introduction. ( A ) in the humidity measurement system application ( a ) below 70 ℃ ( normally at -40 ℃ above ) , if relatively clean environment , the use of polymer sensors, polluting the use of Camshaft Position Sensor ( heating washing of regeneration type ) . Heating the cleaning process as it exists , can not be continuously measured , and the large energy consumption (1 ~ 10W). However, long life, use the optional heated sensor clean cycle is longer , such as chlorine oxy apatite Auto Temperature Sensor , 2 ~ 3 months wash , in addition, internal heat than the outer heat and low energy consumption . ( 2 ) In the range of 70 ~ 100 ℃ measured humidity , washing with a heating ceramic sensor , to improve the accuracy of linear and temperature compensation. In order to achieve more accuracy will have with the microcomputer. In hot and humid heat required frequent cleaning, such as more than 80% RH , the need to 30S cleansing once daily, preferably equipped with automatic cleaning device heating . ( 3 ) in the range of 100 ~ 150 ℃ humidity measured in the international community , mostly made of ceramicCooling Temperature Sensor temperature and humidity instrument . ( Two ) in the industrial automatic control application process in order to improve product quality and energy , usually in the product drying system , humidity control reactors , boilers, water vapor leak detection, integrated circuits or the head of the air-conditioning plant mostly using ceramic humidity sensor control ; variety of air conditioning systems, medical systems and humidity control can be polymeric or ceramic humidity sensor . ( Three ) in a steam leak detection systems used in thermal power stations , nuclear power plants, steam locomotives , boilers and other high temperature and pressure equipment , in order to prevent leakage, prevent accidents , humidity sensor can be used for leak detection . ( Four ) in the other systems used in home appliances dew condensation detection sensor can be used as tape recorders , car windows, condensation , frost detection. Humidity sensor applications driving the need for microelectronic circuit package failure mechanism analysis , due to IC failure and humidity have a great relationship .
2013年10月20日星期日
Unique advantages photoelectric sensor
Photoelectric sensor applications more monitoring, response systems. Large aerospace military field , small -car electronic eye , etc., can be applied photoelectric sensors. In many industrial production line there are some application cases. For example, electronic eyes monitoring , digital rangefinder and counting ! Here to introduce you to the unique advantages of photoelectric sensors under what . 1 ) If long distance detection is retained on the radio more than 10m detection distance , etc., will be able to achieve other detection methods ( magnetic , ultrasonic , etc. ) can not be away from the detector . 2 ) restrictions on the detection of small objects caused due to the detected object shading and reflection for the detection principle , it is not like the proximity sensor will detect metal objects limited , it may be on the glass . Plastics timber of liquid , almost all objects detected . 3 ) Response time is short for high-speed light itself , and Crankshaft Positioning Sensor circuit constituted by the electronic components , it does not include mechanical working time , the response time is very short . 4 ) High resolution through advanced design techniques make the light beam is concentrated in a small spot , or by constructing a special light-receiving optical system to achieve high resolution . Small objects can also be detected and the position detection precision . 5 ) non-contact detection can be achieved without mechanical contact with can detect objects to achieve detection , it will not detect the object and sensor damage. Therefore, Car Temperature Sensor can be long-term use . 6 ) can be achieved by detecting the object forming the color determination of the light reflectivity and absorption of the light according to wavelength of light to be cast and the detected object color combinations vary . By utilizing this property , can detect the color of objects detected. 7 ) to facilitate adjustment of the projection type, visible light , flood light beams are visible to the eye , to facilitate adjustment of the position of the detected object .
Displacement sensor parameters
Displacement sensor parameters - displacement sensor is a relatively common sensors, displacement sensors is it ? Displacement sensor parameters What ? Displacement sensor , also known as linear sensor , it is divided into inductive displacement sensors , capacitive displacement sensor , optical displacement sensors , displacement sensors ultrasonic displacement sensors , hall-type displacement sensor . Inductive Coolant Temperature Sensor is a linear device belonging to metal induction , after power sensing face of the switch will generate an alternating magnetic field , when a metal object close to this sensor surface, the metal is generated eddy current draws oscillator the energy, so that the oscillator output amplitude linear attenuation , and then the change in the amount of attenuation to accomplish the purpose of non-contact sensing object . Main parameters Nominal resistance: potentiometer resistance indicated above . Repeatability: This parameter is as small as possible . Resolution: minimum displacement sensor displacement values can feedback This parameter smaller the better. Conductive plastic Coolant Temperature Sensor resolution is infinitesimal . Permissible error: nominal resistance and actual resistance the difference with the percentage of the ratio of nominal resistance , said resistance deviation , which represents the precision potentiometer . General tolerances within ± 20% as long as it meets the requirements, because the general displacement sensor based on the partial pressure of ways to use the specific resistance of the size of the sensor data acquisition is not affected. Linearity: Linearity error This parameter is smaller and more good life: conductive plastic displacement sensor in 200 million times.
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