Sensor Net

Ultrasonic sensors are small devices used to detect the presence of intruders and other foreign objects. These can discreetly be placed in courtyards and inside homes to detect the presence of moving objects alien to the surroundings. They operate at frequencies in the range of twenty-five to forty kilohertz, which is way above the human hearing range. The basic mechanism used in ultrasonic sensors activates a quartz crystal that emits ultrasonic sound waves in the surrounding areas. The detector system senses the frequency of reflected waves to detect any slight changes that might occur due to a moving object technically known as the Doppler effect. These devices are designed to produce[..]

The digital water flow meter consists of a turbo prop sensor which is attached to a handle that is expandable and has a digital readout display. The Global Water Flow Probe is a very accurate water flow instrument that measures the flow in open channels as well as in partially filled pipes. The digital water flow meter has true velocity averaging and can measure flows in a very accurate manner and is used for measuring flows in rivers and streams as well as monitoring velocity in ditches as well as canals. The digital flow meter also has many features to it including easy flow monitoring, digital display in ft/second or meters per second, does not weigh much and is reliable as well as[..]

Cleaning validation is made easier than ever before with the LIF Fluorescence Sensor from Custom Sensors and Technology. As one of our most popular products, the LIF Sensor provides exceptional real-time analytic solutions while acting as representation for the level of innovation and quality brought to every one of Custom Sensor's projects. Read on to learn more about our LIF Sensor and how it can provide outstanding cleaning validation and increased operational efficiency for your company. What is the LIF Sensor? The LIF Fluorescence Sensor from Custom Sensors and Technology is an LED light induced fluorescence [LIF] sensor developed in collaboration between CST and GlaxoSmithKline. It[..]

Most people are familiar with relative humidity as discussed by the local weather reporter. Humidity has a significant effect on comfort as most of us know. Very few people realize that humidity is important to scientists and engineers in many different ways. Weather reporters, scientists and engineers all need some way to measure humidity. This short article will describe some types of humidity sensors commonly used to get the measurements. Humidity is the measure of water vapor suspended is air or other gas. Water vapor is invisible when suspended in a gas. Fog, steam, rain, clouds or other precipitation are water condensing out of suspension and becoming visible (and wet). Scientists[..]

Front surface fluorescence is an essential technology to implement as part of your process. At Custom Sensors & Technology, we provide a variety of exceptional techniques and products that are suited for use with front surface fluorescence and insitu applications, guaranteeing systems that are capable of reliable results through leading technologies. Front Surface Fluorescence for Antibiotics in Waste Water: We

So you may have a security system already. Yes, you may have several of your doors & windows protected... But what if you did not have ALL of your doors and windows wired for contacts? You may be suprised that the majority of homes that have security systems are actually under protected. Thats right, due to finances, many people choose a security system that protects only 2-3 doors or windows? In fact... In some areas where the older homes were not pre-wired for security beforehand, some people choose to simply protect their front and back door only. What does that mean for you? While it is true that some protection is better than no protection, it concerns me that a burglar may[..]

From touch screens in cars, touch screens at the bank and on your phone, more and more touchable screens and other devices are coming on the market using capacitive sensors.   What is Capacitive Technology? A capacitive touch screen panel is coated with a thin indium tin oxide material that conducts continuous electrical currents across a sensor- say a touch screen of an iPhone. So it exudes a controlled electronic field in both a vertical and horizontal axis and therefore is capacitive. In order for the capacitive technology to function, it must be touched by something else that also exhibits electricity- like the human body. When a person’s finger touches a capacitive screen, it[..]

No longer does having an indoor pet mean that you have to compromise on home security. Gone are the days when you leave the house without setting your alarm system for fear of causing a false alarm. New pet-sensitive motion sensors are changing the way that people look at home security. To many pet owners their treasured little poodle is not just a dog but a member of the family. As a member of the family we want our pets to have the same sense of security in an emergency that we have. At the same time we want to know that our home and valuables are protected from burglaries. With ADT Home Security you can rest assured that you home, family and pets are all protected. Pet-sensitive[..]

Consumers interested in home security systems will find that the top home security systems are equipped with motion sensors. Motion Sensors are used by homes and by businesses to detect human movement and car movement. They are often used to turn on lights so that humans can have easier access to garages and doors. They are highly relied upon in home security systems. With home security systems, motion sensors are able to pick up human movement through the use of infrared light. The infrared light picks up the movement which in turn triggers the alarm. They are desired for home security because they are inconspicuous to a burglar. Some homeowners who own home security systems may be[..]

The cell phones with <a rel="nofollow" onclick="javascript:pageTracker._trackPageview('/outgoing/article_exit_link');" href= sensors</a> built into the touch screen is the technology they are referring to. A technology that was created decades ago, but too expensive then to be used in the format that it is today, is coming off of factory lines by the millions. Since the demand for capacitive sensors are up, the cost once associated to create them has diminished. There is an increase in factory production of capacitive sensors, thus reducing the cost of capacitive touch technology. Is there a difference between touchscreens? Absolutely. There are a couple different types of[..]

What is An LVDT? The letters LVDT are an acronym for Linear Variable Differential Transformer, a common type of electromechanical transducer that can convert the rectilinear motion of an object to which it is coupled mechanically into a corresponding electrical signal. LVDT linear position sensors are readily available that can measure movements as small as a few millionths of an inch up to several inches, but are also capable of measuring positions up to ±20 inches (±0.5 m). The transformer's internal structure consists of a primary winding centered between a pair of identically wound secondary windings, symmetrically spaced about the primary. The coils are wound on a one-piece[..]

In the past twenty years, devices such as nanny cameras have moved from the domain of the rich and famous and into the living rooms of ordinary, nine-to-five working folk. The same is true of formerly unaffordable technologies like door and window sensors and motion detector alarms. Indeed, to say that window alarms now cost about as much as a few burgers from McDonalds is really no exaggeration. You can purchase contact pads, the simple magnetic components for door and window alarms, at large hardware and department stores, often at bargain-bin prices of under five dollars. These magnetic pads form a circuit which, when broken, signals the central alarm hub and gets that siren sounding.[..]

Motion sensors, or commonly known as motion detectors, have become an integral part of security and home automation systems. They can detect sound easily, producing alarm as soon as image record devices capture an image. A lot of people have started investing in this product as the feasibility that it offers is just outstanding. Catching a glimpse of someone movement is something that can really stand as a great means in maintenance of security. Drive way sensors are the most common motion sensor devices used in commercial establishments, offices and homes. Motion sensor lighting has been widely used to light up passage or rooms when necessary and switch off when not needed. Wireless[..]

A motion detector is a device that contains a mechanism or electronic sensor that quantifies motion. It can be connected with other devices that alert the user of a moving object within the field that the detector is viewing. An electronic motion detector contains a motion sensor that can change the detection of motion into an electronic signal. Detectable range is typically up to 50 feet (15 metres). Modern day motion detectors use a combination of different technologies. These are referred to as 'dual technology' detectors. They help guard against false alarms. False alarms are usually caused by electrical and technical failures. These nuisance alarms aren't usually activated by[..]

A mass airflow sensor (MAF) is used to find out the mass of air entering a fuel- injected engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. The sensing element in MAF sensors can be easily contaminated causing hard starting, rough idle, hesitation and stalling problems. How do I know that my mass airflow sensor is faulty? The vehicle indicates errors such as erratic engine operation, reduced performance, increased petrol consumption and engine cutout. Other causes may be possible why an intact mass airflow sensor may indicate wrong signals: - Defect exhaust gas recirculation valves - Leakages in the[..]

Temperature Data Logger Applications The most common usage of the data logger today worldwide is for temperature data logging. The temperature data logger is used in offices, museums, factories, hospitals, road transport, and outdoors for monitoring the environment. Below is a summary of the most common temperature data logger applications: Temperature data logger applications in factory environments In the semi conductor industry production processes and clean rooms must be kept at a constant temperature to for quality control purposes. Here the temperature data logger is indispensable The logging and monitoring of temperature is essential in many manufacturing processes. In the food[..]

Since a significant change involves an exchange of energy, sensors can be classified according to the type of energy transfer that they detect. Thermal temperature sensors: thermometers, thermocouples, temperature sensitive resistors (thermistors and resistance temperature detectors), bi-metal thermometers and thermostatsheat sensors: bolometer, calorimeter   Electromagnetic electrical resistance sensors: ohmmeter, multimeter Electrical current sensors: galvanometer, ammeter Electrical voltage sensors: leaf electroscope, voltmeter Electrical power sensors: watt-hour meters Magnetism sensors: magnetic compass, fluxgate compass, magnetometer, Hall Effect device, Metal detectors  [..]

the world industries of all types are making use of sophisticated flow meter technology in a huge of range of processes. Never heard of a flowmeter before? Flowmeters, as their name suggest, are devices used to monitor the throughflow of something. This something is either some kind of liquid or gas. The flow meters device is either sited within or on the surface of the tube or pipe that the substance flows through. You would be amazed to hear how this clever technology is being applied in Industry. In this article we will have a look at how flow meter devices are being used in two different Industries. First of all you need to know that flowmeter devices can be sited within a tube or[..]

oss the globe flow meter technology is being applied to assist in the manufacturing and processing procedures in inumerable industries. If you are new to the concept of flowmeter technology, the name itself will give it away. A flow meter is a device that can be utilised to collect data and monitor the flow of something. This something will be some kind of liquid or gas. The flow meters will sit on the surface of the pipe, or be sited within the pipe walls that the liquid or gas flows through. The technology itself can be used for a whole variety of reasons. This article will give you an insight into how flow meter devices are being applied in two very different sectors of Industry.[..]

ITE FLOWMETERS are basically those devices that are mainly used to measure the rate of flow of a particular gas or liquid. They can easily measure all these substances generally in terms of the mass flow rate or the volumetric flow rate.The volumetric flow rate is basically expressed in m3/second. The mass flow rate is basically expressed in kg/second. The flow meters have a number of applications. A peak flow meter is mainly used to measure the capacity of lung. This is mainly used by people with breathing problems or asthma and can be easily used to determine if an attack of asthma is imminent. Flow meters are also used in number of industries, like the water management, food[..]

manufacturing of food and drink across the world, processing plants need to be able to constantly measure the flow of ingredients being used. During the manufacturing of food and drink there will naturally be a requirement for water, as an ingredient in itself or used to clean, steam and heat. Oil and gas may also be pumped in to help provide heat during the manufacturing process. These too will require flow measurement. This is where clever flow meter technology comes into play. If you have never heard of a flow meter then it probably best to give you a quick explanation. Flow meters are instruments designed to measure the linear, nonlinear, mass or volumetric flow rates of gases or[..]

Inertial sensors including accelerometers (or accelerometer sensor of dollars) and the angular rate sensor (gyroscope) and their single, double, three-axis combined IMU (Inertial Measurement Unit), AHRS (including magnetic sensor attitude reference system). Is the use of MEMS accelerometer inertial sensing the quality of force measurement sensor, the general standard of quality from the block (sensor element) and the detection circuit. According to the different sensing principle, mainly piezoresistive, capacitive, piezoelectric type, the tunnel current-type, resonance type, thermal and electromagnetic coupling type and so on. In 1998, the United States CSDL design and development of the[..]

Sensors play an important role in satisfying our inquisitiveness to know about our surroundings. By far, temperature is the most measured parameter using a sensor. The most primitive method to measure would have been by touch and then by the use of external metals. The initial measurements were just comparative and did not have a scale. Sensors have come a long way from that point and we now have highly accurate measuring devices. With advances in technology, various sensors measuring pressure, humidity, proximity, and motion, among others, have been developed. To form a complete application, however, use of these stand-alone sensors is not enough. Sensors must be interfaced to a[..]

Flowmeters are used in many ways but their basic aim is to measure the flow of a particular substance passing through a tube, pipe or chamber. Why would you want to do this? Well, you could say one of the reasons is to assess the well being of the machine that is being measured. Another reason may be to assess that the machine is operating correctly. This article will illustrate some of the flowmeter types and discuss how they are used. Peak flowmeters are used to measure the rate of air flow out of the lungs. Peak flowmeters are used to assess or gauge the condition of a person's lungs. This is sometimes used as part of a fitness test as the rate at which air can be exhales from the[..]

American Sensor Technologies, Inc. (AST) offers the new AST5100 Wet / Wet differential pressure sensor (also termed differential pressure transducer or transmitter) for differential pressure measurement ranges as low as 0 to 5 inches of water column (0 to 0.18 PSI) and up to 0 to 15 PSID. AST uses a Macro Sensors LVDT (Linear Variable Differential Transformer) to measure the movement of bellows and digitally amplifies the signal with new AST electronics. The LVDT is known throughout the sensor industry as a measurement device with accurate, repeatable measurements as low as a few millionths of an inch. The AST5100 is compensated from 0 to 55°C (30 to 130°F) using the same advanced[..]

Ultrasonic flow measurement is based on the principle of transmission and receipt of sound waves, which have a unique quality of bouncing off most objects - solid, liquid or gaseous. This technology is vastly different from traditional flow measurement technologies that use turbines or thermal sensors to measure the flow rate of fluids. Demand from industry for higher accuracy and lower costs have led to development of ultrasonic flow measurement technologies that fulfill meet the requirements of wide range of applications and processes. While there are number of different technologies in ultrasonic measurement currently available in the market, these can broadly be categorized into four[..]

What Are Pressure Transmitters Used In? Pressure transmitters are uses in industrial process control systems for pressure measurement of a process fluid by comparing it to one or more set variables called differential measurements. These pressure measurements could be for the pressure, flow, or flow-rate of a liquid through the application, and if that pressure or flow rate is not measuring where it should the pressure transmitter will alert someone to the problem via whatever warning system is set in place. There are two general types of pressure transmitters used for pressure measurement. A differential pressure transmitter is used to measure the difference in pressure between two[..]

A sensor is a device that responds to an input quantity by generating a functionally related output usually in the form of an electrical or optical sight. There are many different types of sensors: position sensors, load sensors, tilt sensors, and vibration sensors to name a few, and they are present in multiple fields that warrant the technology. In the past twenty years there has been tremendous growth in the number of products and services that utilize information acquired by monitoring and quantifying different types of sensors. Sensors have been produced to match the need of these afore mentioned services, and is referred to as sensor technology. Sensor technology encompasses a[..]

The world wide offshore oil industry uses many types of pressure transducer for control and measurement in processes, drilling controls and down hole tools. With the need to find oil in more inaccessible places the equipment used in exploration, drilling and production becomes ever more complex and the use of pressure transducer products is on the increase. A few uses for pressure transducer sensors are: Wellheads Wellhead assemblies and Christmas tree use a range of pressure transducer sensors to monitor wellhead pressure. Due to the hazardous area the pressure transducer has to be of intrinsically safe or explosion proof design. A pressure transducer used in this application also needs[..]

Meeting tough FDA standards for HPLC system IQ OQ PQ validation as well as ongoing PV (performance verification) calls for properly installed, calibrated, and maintained equipment. A digital liquid hplc flowmeter such as the FlowCal 5000 is proven to be a convenient and accurate tool to calibrate HPLC pump flow rates, simplifying the calibration and validation procedures. Pump flow rates from 25 mL/min down to as low as 0.05 ml/min can be measured with an accuracy of ± 1 % of the flow rate. This type of tool saves time and labor compared with using a timer while manually collecting the effluent for measurement by weight or volume. In addition, the data collected is independent of[..]

Since the 1960's injection molders have use pressure transducers to monitor many different aspects of molding. Now, more and more injection mold makers are using pressure transducers to add value to their molds. As globalization and an uncertain economy take their toll on mold making, it makes sense to add high value to you finished product. Now that pressure transducers can be designed and installed in a greater variety of locations, with varying purposes, the applications are more robust than ever. Why use a pressure transducer? Using a pressure transducer enables mold makers to gain precise and accurate data about how the tool is actually performing in production. Some of the types[..]

Looking for reliable pressure calibration equipments for industry production? A variety of equipments and sensors are available for calibration equipments like pressure transducers, transmitters and pressure gauges. It holds a special place for improving the industrial production and is also used in other essential applications. Listed below are some of the equipments which are widely used in different commercial and industrial purposes. These are: 1. Pneumatic Calibration Hand Pumps 2. High Pressure Calibration Hand Pumps 3. Digital Test Gauges 4. Hand held precision manometers 5. Secondary pressure standards 6. Pressure calibrators with electrical measurement 7. Calibration standard[..]

Since the 1960's Plastic mold have use pressure transducers to monitor many different aspects of molding. Now, more and more injection mold makers are using pressure transducers to add value to their molds. As globalization and an uncertain economy take their toll on mold making, it makes sense to add high value to you finished product. Now that pressure transducers can be designed and installed in a greater variety of locations, with varying purposes, the applications are more robust than ever. Why use a pressure transducer? Using a pressure transducer enables mold makers to gain precise and accurate data about how the tool is actually performing in production.  Some of the types of[..]

Ever wanted to quickly and cheaply measure the flow rate of a gas flow or water flow, then one of the simplest and most economical flowmeters on the market is the variable area type flowmeter. Often referred to as a rotameter or glass tube flowmeter, this is one of the most economical and reliable instruments for measuring flow. They are available in a wide variety of configurations for different gases, fluids, temperatures and pressures, all with different styles of connections. The flowmeter requires no power and in its smallest form can be carried in your pocket. It consists of a simple measurement principle of a float moving up and down in a graduated tapered glass tube. As the flow[..]

re in any industry that needs constant monitoring of inflow or outflow of liquids then you will require the right flow meter to accurately measure the rate and quantity of that flow. The right meter will help keep tabs on your liquids and increase the flow of your profits by preventing wastage and leakage while allowing you to improve your delivery systems simultaneously. While flow meters previously used several moving parts to measure the rate of flow, technology has now advanced to a level that many models do not have any moving parts to accurately monitor that flow. This ensures increased life of the flow meter along with a higher level of accuracy and a chance to store data and[..]

ERS are generally used in a number of ways but their main or basic aim is just to measure the rate of flow of a certain substance passing through a pipe, tube or chamber. Why would someone want to do this? You could easily say that one of the reasons is just to assess the well being of the machine that is really being measured. One more reason might be to assess that the machine is operating rightly. Peak flow meters are mainly used to measure the rate of flow of air out of the lungs. Peak flow meters are used to gauge or assess the condition of lungs of a person. This is also used as part of a test of fitness. However a peak flow meter is commonly used to easily determine whether[..]