D. K. Instruments Pvt. Ltd. Dhakuria, Kolkata, West Bengal

The vibratory level sensor provides reliable point level detection in a wide variety of process control applications in bins, silos and hoppers, filled with grained or powdered materials or for liquids in a tank. The vibrating probe principle eliminates problems associated with temperature, humidity and material changes, while providing state-of-the-art electronic reliability and accuracy that requires no calibration.

Ultrasonic level meters ULM® is self contained device that includes electroacoustics transducer and electronic module. The level meter ULM transmits series of ultrasonic pulses which propagates towards the liquid surface. Refl ected acoustic wave is received back in the ULM transducer and processed in electronic module. The distance calculations are based on time of fl ight of the acoustic wave to the level and back.

Ultrasonic level meters ULM® is self contained device that includes electroacoustics transducer and electronic module. The level meter ULM transmits series of ultrasonic pulses which propagates towards the liquid surface. Refl ected acoustic wave is received back in the ULM transducer and processed in electronic module. The distance calculations are based on time of fl ight of the acoustic wave to the level and back.

ultrasonic level meters are compact measurement devices including an electroacoustics converter, central processor unit and display module. Using the electroacoustics converter, the level meters transmit the sequence of ultrasonic pulses that spread towards the surface level. The converter recuperates refl ected acoustic waves that are subsequently processed in the electronic module. The intelligent evaluation block fi lters out interfering signals, compares the cleaned received signal with the false refl ection map (e.g. from mixers, ladders, reinforcement etc.) and selects a suitable refl ection (echo). Based on the period during which the individual pulses spread towards the surface level and back and based on the measured temperature in the tank, the instant distance to the surface level is calculated. According to the level height, the level meter output is set and the measured value is displayed on the display.

We are offering tubular type indicator. Tubular level gauge is the simplest form of level indication in process industry. It is simple and reliable device for direct reading in atmospheric or pressurized tank applications. It is mounted parallel, along the side of tank. As the process level fluctuates, the level in the transparent glass tube changes accordingly and gives local liquid indication.

TUBULAR LEVEL GAUGE IS THE SIMPLEST FORM OF LEVEL INDICATION IN PROCESS INDUSTRY. IT IS SIMPLE AND RELIABLE DEVICE FOR DIRECT READING IN ATMOSPHERIC OR PRESSURIZED TANK APPLICATIONS. IT IS MOUNTED PARALLEL, ALONG THE SIDE OF TANK. AS THE PROCESS LEVEL FLUCTUATES, THE LEVEL IN THE TRANSPARENT GLASS TUBE CHANGES ACCORDINGLY AND GIVES LOCAL LIQUID INDICATION.

TUBULAR LEVEL GAUGE IS THE SIMPLEST FORM OF LEVEL INDICATION IN PROCESS INDUSTRY. IT IS SIMPLE AND RELIABLE DEVICE FOR DIRECT READING IN ATMOSPHERIC OR PRESSURIZED TANK APPLICATIONS. IT IS MOUNTED PARALLEL, ALONG THE SIDE OF TANK. AS THE PROCESS LEVEL FLUCTUATES, THE LEVEL IN THE TRANSPARENT GLASS TUBE CHANGES ACCORDINGLY AND GIVES LOCAL LIQUID INDICATION.

THE CHAMBER IS CONNECTED TO VESSEL WITH CROSS FITTINGS AND FLANGED, THREADED OR WELDED ENDS. USUALLY, BETWEEN THE INSTRUMENT AND ITS CONNECTING ENDS, VALVES ARE FITTED TO CONSENT SHUT-OFF PIPING AND TO DISASSEMBLE THE LEVEL GAUGE WITHOUT EMPTYING THE VESSEL. DRAIN VALVES CAN ALSO BE FITTED TO CROSS FITTINGS DEVICE. TO AVOID LEAKAGE IN CASE OF GLASS BREAKAGE, SAFETY BALL-CHECK DEVICE CAN BE PROVIDED IN CROSS-FITTINGS OR SHUT-OFF VALVES.

In order to demonstrate the basic principles of the A.C. Transformer and also the basics of various experiments in electromagnetism by means of different coils & cores using direct or alternating current, this apparatus is constructed. Coils are made of enamelled copper wire wound around on plastic bobbins with 4mm terminals connections. All the components fit together to allow for assembly of the arrangements required to demonstrate motor & braking effects on the dissectible transformer.

Mounting:See Mercury in Steel Thermometers Specification Column. Capillary:Copper Capillary with PVC Sheath Standard length 3 meters.

Power supply is provided with a continuously adjustable knob for varying voltage from 0 to 5000V, output current 0-2mA, overload protection provided. In build current limiter ensures a long service life of the tubes. Spring contacts is fully insulated fixtures for secure mounting. Provided with fuse protection for primary winding and protection window for tube with red switch for safe operation. Input voltage 0-230V AC, 50Hz. Used with spectrometer experiment.

A low distortion signal generator with four decade ranges selectable by rotary switch. Sine waveform and square waveform selectable by membrane switch with LED indicator. A built in speaker is provided for audible frequencies and is selectable by membrane switch.

THE MODEL SF-100 IS A FLANGEDSCREWED SIGHT FLOW INDICATOR WITH A CASTFABRICATED BODY. THIS SIGHT FLOW INDICATOR PROVIDES VISUAL OBSERVATION AND MONITORING OF THE PROCESS FLOW STREAM. AVAILABLE DEVICES TO ENHANCE VISIBILITY INCLUDE, FLAPPER AND ROTATOR. BODIES ARE AVAILABLE IN BRONZE, IRON, STEEL AND STAINLESS STEEL. SPECIAL ALLOYS ARE ALSO AVAILABLE. STANDARD UNITS ARE AVAILABLE IN 150#, 300# AND 600# ANSI RATINGS.

We are offering side mounted magnetic level switch. Buoyant force of the liquid on the float is used for movement of the perm anent magnet closer to or further away from reed switch and initiates the switching function of high and low level. The unique feature of reed switch technique is adopted. Product technique, concept, merit, quality and unparallel reliability are the underlying reasons for enviable performance record. Level switches with micro switch and air break type switch is also available.

THE ROTAMETER IS A SIMPLEST FORM OF FLUID MEASURING INSTRUMENT. IT CONSIST OF A BOROSILICATE TAPERED GLASS TUBE PLACED VERTICALLY WITH ITS SMALLER DIAMETER AT THE BOTTOM. THE FLOAT USED IN THE TUBE IS MADE UP OF HEAVIER NON-CORROSIVE SUBSTANCE WHICH RESISTS THE VERTICAL FLOW OF THE FLUID PASSING THROUGH THE ANNULAR SPACE BETWEEN THE TUBE AND THE HEAD OF FLOAT. THE FLUID PASSING THROUGH THE ORIFICE, BALANCES THE WEIGHT OF THE FLOAT IN THE METERED FLUID AND IN EQUILIBRIUM POSITION, INDICATES THE FLOW RATE OF THE FLUID AGAINST A CALIBRATED EXTERNAL SCALE FITTED BY THE SIDE OF THE TUBE.

RING LAUNCHER SV543: Ring Launcher demonstrates the Lenz's law and effects of electromagnetically induced currents.

THE PRINCIPLE OF DETECTION INVOLVED IS THE CAPACITANCE PHENOMENA WHICH IS DEVELOPED BETWEEN THE PROBE AND THE REFERENCE AS THE MEDIA IN THE TANK RISES AND FALLS. THIS CHANGE IN CAPACITANCE IS DETECTED BY EMPLOYING RADIO FREQUENCY (RF) FOR LEVEL DETECTION AND MONITORING.

Suitable for all general purpose applications, laboratory use, experimental setups, circuit development, componentcircuit evaluation, industrial applications. Good performance at low cost.

ON EACH WINDOW A SPECIAL HIGH RESISTANCE PLATE REFLEX GLASS IS FITTED WITH SEALING JOINT AND METAL COVER PLATES HOLD BY BOLTS AND NUTS. THE CHAMBER IS CONNECTED TO VESSEL WITH CROSS FITTINGS AND FLANGED, THREADED OR WELDED ENDS. USUALLY, BETWEEN THE INSTRUMENT AND ITS CONNECTING ENDS, VALVES ARE FITTED TO CONSENT SHUT-OFF PIPING AND TO DISASSEMBLE THE LEVEL GAUGE WITHOUT EMPTYING THE VESSEL. DRAIN VALVES CAN ALSO BE FITTED TO CROSS FITTINGS DEVICE.

We are offering pressure switches. Pressure switches are designed from vacuum to pressure. The most important component for controlling pressure is the sensing element. Pressure sensors for both metallic and elastomer are suitable for most applications. Pressure sensorsare normally bellows, diaphragms and piston. This works on force balance principle. Media pressure on the sensing element contracts the force of the range spring (adjustable by the adjusting nut) which moves the piston shaft only a few thousandths of an inch to directly actuate the electrical snap action switching element.

Pressure switches are designed from Vacuum to pressure. The most important component for controlling pressure is the sensing element. Pressure sensors for both metallic and elastomer are suitable for most applications. Pressure sensors are normally bellows, diaphragms and piston. This works on force balance principle. Media pressure on the sensing element contracts the force of the range spring (adjustable by the adjusting nut) which moves the piston shaft only a few thousandths of an inch to directly actuate the electrical snap action switching element.

PRESSED STEEL PRESSURE GAUGE, Dial Size: 50,63,100 & 150 mm.Bourdon Movement & Block: Non Ferrous, Accuracy: ± 2%. Pressed Steel Case & Cover.Ranges: 1 Kg cm² to 600 Kg cm² with psi scale. -760 mmHg (Vacuum) and compound ranges.

Ideal for general purpose applications where a low voltage sturdy power supply is required e.g. for equipments with lamps and resistances.