Digital Vibration Monitor is a PC based instrument, which provides vibratory information including acceleration, displacement, frequency and velocity readout. The accelerometer is interfaced with an M/RAD supplied interface box, which is attached to the acquisition card.

Dilution Probes are not usually applicable to particulate monitoring, although some systems have been designed to permit the sampling of semivolatile pollutants, such as chlorinated dibenzodioxins and polyaromatic hydrocarbons.

DIN Rail mount PC programmable temperature transmitters are highly accurate microprocessor based temperature transmitter. It accepts a wide range of inputs such as RTD, thermocouples, resistance and millivolt. It is loop powered and provides a 4-20 mA output signal. The slim DIN rail design allows for many transmitters to be mounted in a small area.

Direct Acting Pressure Reducing Valves operate with either a flat diaphragm or convoluted bellows. It is the smallest and most economical of the three types of PRVs and is designed for low to moderate flows. Accuracy of direct-acting PRVs is typically +/- 10%. Direct-acting pressure reducing valves are generally angle-type valves.

Disintegration Tester is a microprocessor based ED-2L, which is used for testing the disintegration time of tablets, capsules and other solid dosage forms. It offers easy loading of the baskets with swivel free movement through a simple yet unique snap-click loading mechanism for attaching and removal of baskets.

Displacement transducer is a transducer used for measuring relatively small amounts of movement in the vertical or horizontal plane. The amount of movement is detected by means of change in an electrical signal caused by the movement of an iron core within a coil. It can measure either linear displacement or angular displacement. It can also be classified according to the principle of transduction on which it is based.

Displacer actuated external cage switches are external cage units that utilize a single switch mechanism for level alarm or control functions in higher-pressure applications. Liquid level movement changes the buoyancy force on a displacer suspended from a range spring. The force change on the spring causes it to expand or contract, moving an attraction sleeve into or out of the field of the switch magnet, actuating the switch. It is used in hydraulic accumulators, natural gas receivers and separators applications.

Displacer actuated level controls for boiler feed systems is a displacer actuated level controls that provide output signals in direct proportion to changes in liquid level. As the buoyancy force on a displacer changes with liquid level movement, a range spring supporting the displacer extends or compresses, moving a magnetic ball. A magnet carriage within the controller head follows the ball producing a change in output. It is applicable in feed water and steam drum applications.

Displacer Type Level Switches offer the industrial user a wide choice of alarm and control configurations. These units utilize a simple buoyancy principle. It is well suited for simple or complex applications such as high level alarm or control of multiple pumps and alarms.

Dissolved Oxygen Analyzer includes a sensor having a lead electrode. The electrodes are immersed in an electrolyte. The sensor includes a pressure-equalizing diaphragm in communication with the sample water to maintain uniformity of pressure in the sensor.

Dissolved oxygen monitor accurately measures the dissolved oxygen content of a variety of samples, including drinking water and wastewater. It provides a solid ppb-level dissolved oxygen measurement. It contains an alarm unit that notifies users when minimum and maximum of dissolved oxygen concentration levels are violated. It is suitable for a wide range of applications, including monitoring the deaeration level of ultrapure water used in semiconductor manufacture, and dissolved oxygen concentration levels in sewage fermentation tanks as well as in hydroponic cultivation and desalination plants.

Distillation apparatus is used for steam and wastewater stripping, chemical product purification and solvent recovery. It consists of metal cylinders armed internally with perforated horizontal plates that are used to promote the separation of miscible liquids that ascend as vapor. Distillation equipment is used extensively in recycling applications and to reduce manufacturing waste. This apparatus usually comprises the use of a heating component and a condensation component to distill the liquid and separate the solvent from water. It is also used to perform steam stripping or distillation of wastewater for removal of hydrocarbons such as alcohols, ketones and acetates. Distillation apparatus are used to recycle and recover contaminants from the manufacturing of polymers, resins and paints. Distillation equipment also contains several other functional components, including an adsorption column or bed, where molecules of solvent in liquid or gas form adheres to the surface of a solid material, rather than enter the solid as in absorption.

Distributed control system refers to a control system usually of a manufacturing system, process or any kind of dynamic system, in which the controller elements are not central in location but are distributed throughout the system with each component sub-system controlled by one or more controllers. The entire system may be networked for communication and monitoring. It typically uses computers as controllers and use both proprietary interconnections and protocols for communication. The input & output modules form component parts of the DCS. The processor receives information from input modules and sends information to output modules.

Distributed Control System refers to a control system of a manufacturing system, process or any kind of dynamic system. A distributed control system uses computers as controllers and use both proprietary interconnections & protocols for communication. Distributed control systems are used in industrial, electrical, computer and instrumentation & control engineering applications to monitor and control distributed equipment with or without remote human intervention. Distributed control systems are dedicated systems used to control manufacturing processes that are continuous or batch-oriented, such as oil refining, petrochemicals, central station power generation, pharmaceuticals, food & beverage manufacturing, cement production, steelmaking and papermaking. Distributed control systems are connected to sensors & actuators and use set point control to control the flow of material through the plant.