![]() The equipment located there is exposed to a much greater range of electrical noise, power surges, temperature, humidity, and corrosive or damaging environments. What sets it apart from other areas is its harsh electrical and physical environment. It is most often the factory floor or the outside areas of an industrial complex such as a chemical plant. The term ‘field’ refers to the area where the equipment making a product or running a process resides. The gasoline pump in your neighborhood is an example of these measurements.įigure 2: Control and Field Conditions - Industrial Measurement Environment Frequently the calibration of the instruments is regulated by municipal, state or Federal agencies. These measurements provide information for plant inventory, quantify the amount of material bought or sold between parties or track internal transfers of material from one operating unit toĪnother within the plant. Flow measurements and control such as those illustrated by Figure 1: Typical Measurement/Control Loop appear in almost every plant.Ĭustody transfer measurements need highly accurate and stable characteristics. For example, the temperature of a heat exchanger is an essential parameter for both process and safety reasons. They provide control over a physical or compositional characteristic of the process. ![]() They also allow the operator to intervene manually if a control measurement fails.Ĭontrol measurements are essential to the economic viability, safety or functioning of a manufacturing process. Each measurement is not essential to the control of the side-draw products but does provide valuable insight about the operating conditions and material and energy balances within the tower. An example of this kind of measurement is the complete temperature monitoring of the distillation trays in a distillation tower. Regardless, these measurements are useful to monitor the condition of intermediary events at every stage of manufacture or processing and may provide necessary information to the plant operator if a control measurement fails. Estimates place the ratio of indicate-only to control inputs at somewhere between 2-to-1 and 3-to-1. Indicate-only measurements are used to indicate the condition of various elements of a process. There are several distinct uses of analog measurements. Helping Dataforth customers achieve good signal conditioning is the goal of this handbook. Good signal conditioning preserves the quality of the measurements available and allows the plant systems to make best use of the control and data acquisition systems installed. Obtaining, maintaining and improving the quality of these measurements is the goal of proper signal conditioning. The second includes such measurements as conductivity, pH and chemical analysis. The first type includes pressure, temperature, flow, force, vibration, mass and density. Yet, for all the advances in systems development, analog field measurements and the electronic signals that carry them are still necessary ingredients in all systems.Īnalog measurements take many forms but can be roughly classified into two types- physical measurements and compositional measurements. Instruments have grown from purely analog systems to the ‘smart’ systems in use today, ranging from simple potentiometers to complex analyzers such as infra-red spectropho-tometers. Instrumentation allows the use of processes which would be difficult or impossible to operate without automation. It also provides the means to make plants economically viable. It regulates and supervises the operation of the equipment within the plant. Plant instrumentation has now become the nerves and brain of the modern manufacturing plant. NOTE: The Ground Loop Isolator connect to the AUX Jack in car to eliminate noise.You will enjoy good quality sound when use it with Ground Loop Noise isolator.The need to measure and control the operation of machinery or process equipment is as old as the Industrial Revolution. Also used with a Bluetooth Receiver/Bluetooth Hands-free Car Kit in your Car Audio System/Home Stereo.ĬOMPACT AND PORTABLE : Being so mini and light-weight (2.01*0.59*0.59 IN, 0.99 OZ), this little gadget does not take much space and can be easily taken away. WORKING PRINCIPLE : The working principle of this noise isolator is to achieve a clear speech/music by eliminating the current noise in some car speakers / home stereo systems.ĬOMPATIBLE MODELS : Works with any portable device that has 3.5mm audio jacks, for your Car Audio System/Home Stereo, when grounding issues persist. ![]() Upgraded Version Release: MPOW BH392A Ground Loop Noise Isolator for Car Audio/Home Stereo SystemĮLIMINATING BUZZING NOISE : Eliminating the buzzing noise, caused by ground loops which happens when the audio source and the speaker use the same power source in some car speakers / home stereo systems when using the Bluetooth receiver.
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