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DK

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

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Our Products

  1. Measurement Gauges & Fittings 12 Products available
  2. Level Switches 9 Products available
  3. Pressure Switches 6 Products available
  4. Magnetic Switch 4 Products available
  5. Measuring Instruments & Equipment 3 Products available

  6. Flow Meters

    2 Products available

  7. Sensors

    2 Products available

  8. Medical Accessories

    2 Products available

  9. Level Transmitters

    2 Products available

  10. Calibrators And Monitoring Systems

    2 Products available
  11. Others Products 21 Products available

Our Products

We are leaders in the market for providing best range of MAGNETISM EXPERIMENTS KIT, DEMONSTRATION METER KIT, LAW OF RESISTANCE BOARD, RING LAUNCHER and CAPACITANCE DEMONSTRATION KIT

MAGNETISM EXPERIMENTS KIT

MAGNETISM EXPERIMENTS KIT

Kit for magnetism experiments is designed for demonstrating the basic experiments of magnetism and is very useful for classroom demonstration purpose.
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DEMONSTRATION METER KIT

DEMONSTRATION METER KIT

The kit has been designed to demonstrate the basic working principle of AC or DC analogue ammeters or voltmeters with interchangeable plastic scales. The whole kit is provided with big size demonstration meter, set of five ACDC dials, load resistance and a power supply to operate the meter.
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LAW OF RESISTANCE BOARD

LAW OF RESISTANCE BOARD
Insulating blocks present on the base prevent the wires from contacting the metal base during experiment.Demonstrate the characteristics of electrical resistance in metal wires.All The wires have the same length and dia , but are made of different materials.Multipurpose power supply.
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RING LAUNCHER

RING LAUNCHER

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

CAPACITANCE DEMONSTRATION KIT

Constant area of plates show capacitance C with variation of distance d ( C 1d).The d can be increased with spacers in steps on 1mm.U shaped small bench with marking in cm eitherside.Large size plates, suitable for demonstration to a group of students.
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TRANSFORMER KIT

TRANSFORMER KIT

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.
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TUBULAR LEVEL GUAGE

TUBULAR LEVEL GUAGE

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.
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Rotameter

Rotameter
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.
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Conductivity Type Switch

Conductivity Type Switch

The concept of utilizing electrical conductivity of most liquids as a means of achieving float less level control has won widespread acceptance as the most reliableversatile system of its kind. This has been successfully applied throughout the Fertilizer, Thermal Power Station, Refinery, Steel, Cement, Sugar, Chemical Processing Industries, in Municipal water works and sewage disposal plants and other Industrial applications, where close, constant control liquids and moist bulk materials is an important critical factor
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Ultrasonic Level Meters ULM

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

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

Magnetic Level Indicators
MAGNET EMBEDDED INSIDE THE FLOAT WILL MOVE UP AND DOWN ACCORDING TO THE LIQUID LEVEL IN THE MAIN VESSEL. A LIGHT WEIGHT MAGNETIC FOLLOWER INSIDE THE GLASS TUBE WITH ADJACENT PLASTIC SCALE COUPLED TO THE CHAMBER INDICATES FLOAT POSITION AND THEREFORE TANK LEVEL.
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DKs Membrane Level Sensor

DKs Membrane Level Sensor
The DKs Membrane Level Sensor is a simple and economical instrument suitable for the minimum and maximum level controlinside silos or hoppers that contain non sticky materials, powders or granules like rice, corns, plastics, coffee, sand, lime, etc.A membrane level sensor provides level indication by detecting pressure applied by the bulk material to the sensingmembrane. The unit is installed to a vessel wall so that the membrane is exposed to the material to be sensed. Asmaterial contacts the membrane, a force is exerted through the diaphragm to a pressure plate within the level sensor.Physical deflection of the pressure plate actuates an internal micro switch for signaling alarms, lights or PLC inputs.When material recedes from the membrane, a light duty spring returns the pressure plate and internal switch back totheir original positions. Humidity and temperature variations do not affect working; the membrane is collision and vibrationproof.
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Tubular Type Indicator

Tubular Type Indicator

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.
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Level Instruments

Level Instruments
ANSPARENT LIQUID LEVEL GAUGE CONSISTS OF A METAL BODY, MACHINED TO HAVE AN INTERNAL CHAMBER AND ONE OR MORE FRONT WINDOWS (ON EACH SIDE OF THE GAUGE).ON EACH WINDOW A SPECIAL HIGH RESISTANCE PLATE TRANSPARENT GLASS IS APPLIED WITH SEALING JOINT AND METAL COVER PLATE 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.TO AVOID LEAKAGE IN CASE OF GLASS BREAKAGE, SAFETY BALL-CHECK DEVICE CAN BE PROVIDED IN CROSS-FITTINGS OR SHUT-OFF VALVES. TO PROTECT GLASS SURFACES FROM CORROSIVE ACTION OF THE PROCESS FLUID, TRANSPARENT LEVEL GAUGES CAN BE FITTED WITH CAF, MICA SHIELDS OR PTFE SHIELDS.THIS KIND OF INDICATOR IS SUITABLE FOR LIQUIDS COLORLESS AND VERY FLUID.
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Industrial Thermometers

Industrial Thermometers
The DKI" thermometer is compactly designed, ruggedly constructed andhas excellent readability. The red-reading glass tube maintains accuracydespite vibrations and shock.This economical thermometer is built for general hydronic applicationssuch as chilled and hot water lines and all small piping networks. It isespecially adaptable to equipment operating under continuous vibratingconditions.Case: Attractive modern design; Wide-angle construction allows full-scalewidth for easy reading.
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MERCURY-IN-STEEL THERMOMETER

MERCURY-IN-STEEL THERMOMETER
  • Ranges (ºC) -38 +50, 50, 100, 120, 150, 200, 250, 300, 400, 500 & 600 ºC
Case & Bezel:Cast aluminium stove enameled black weatherproof case with inner screwedtype ABS plastic bezel. Mounting:1) Vertical (bottom entry) & Horizontal (back entry) withadjustable union for Rigid Stem type.2) Panel (surface) with bottom entry & flush panel back entry with adjustable union for Distance (capillary) type.
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Displacer Type Switch

Displacer Type Switch

We are offering displacer type switch.All control have been designed using modular concept. Standard assemblies may be incorporated in a wide variety of arrangements to meet virtually any control application n allowing maximum interchangeability of assemblies. Dk's unique engineering & manufacturing capability handles your special process requirements promptly with out long delays at an economical cost. the basic operation principle for magnetic switch action results from a change in liquid level, which moves a magnetic attraction sleeve (ss410ims) into the field of an externally located 'u' magnet.
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Power Supply

Power Supply

  • Working voltage 230V AC, 50Hz
Ideal for general purpose applications where a low voltage sturdy power supply is required e.g. for equipments with lamps and resistances.
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DIFFERENTIAL LEVEL TRANSMITTER

DIFFERENTIAL LEVEL TRANSMITTER
The differential type level indicator cum controller is used for measurementof difference of two liquid levels. The level is detected by capacitanceprinciple. The capacitance is formed between the active electrode (flexibleTeflon taped wire) and the reference wire. As the liquid level rises(or falls)the capacitance between the active electrode and reference increases(ordecreases) which is converted into equivalent signal. The output of twoprobe unit is fed to the controllerunit to display the difference in leveland operate alarm output at anydesired differential level.
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Signal Generator

Signal Generator
  • Working Voltage 230V AC, 50Hz.
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.
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Spectrum Tube Power Supply

Spectrum Tube Power Supply
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.
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Regulated Power Supply

Regulated Power Supply
  • Voltage 0 -16V, 1 Amp DC continuously variable 5V. 1 Amp. DC Fixed
Suitable for all general purpose applications, laboratory use, experimental setups, circuit development, componentcircuit evaluation, industrial applications. Good performance at low cost.
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ULTRASONIC LEVEL METERS ULM 53L

ULTRASONIC LEVEL METERS ULM 53L
Ultrasonic level meters ULM is self contained device that includes electroacoustics transducer and electronic module. Thelevel meter ULM transmits series of ultrasonic pulses which propagates towards the liquid surface. Refl ected acoustic wave isreceived back in the ULM transducer and processed in electronic module. The distance calculations are based on time of fl ightof the acoustic wave to the level and back.
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Sight Flow Indicator

Sight Flow Indicator
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.
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Air Flow Switch

Air Flow Switch
DK's magnetic flow switch is the product of two decades knowledge inthermal power station, fertilizer & chemical industries. Flow switch isthe target type unit that works on the magnetic principle of attraction.As the flow causes the flapper to deflect the magnet moves closer toor further away from the switch causing the reed switch to actuate.Switching action is determined by flow & not by pressure. The uniquefeatures of reed switch technique is adapted unique design, magneticswitching and uncompromised quality have resulted in unparallelreliability
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Capacitance Type Switch

Capacitance Type Switch

We are offering capacitance type switch.The principle of detection involved is the capacitance phenomena which is developed between the probe and the reference. The amount of capacitance developed in any vessel is determined by the size (surface area) of the probe, the distance from the probe to its ground reference, and the dielectric constant of the medium being measured. The amount of capacitance developed in a vessel becomes dependent upon the amount of the probe which is covered with media. As the media rises and falls in the tank, the amount of capacitance developed between the probe and the ground reference also rises and falls.this change in capacitance is detected by employing radio frequency (rf) and converted to a digital waveform proportional to the change in level which in turn is used for level detection and monitoring.
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CAPACITANCE TYPE LEVEL MONITORING UNIT

CAPACITANCE TYPE LEVEL MONITORING UNIT

THE PRINCIPLE OF DETECTION INVOLVED IS THE CAPACITANCE PHENOMENA WHICH IS DEVELOPED BETWEEN THE PROBE AND THE REFERENCE. THE AMOUNT OF CAPACITANCE DEVELOPED IN ANY VESSEL IS DETERMINED BY THE SIZE (SURFACE AREA) OF THE PROBE, THE DISTANCE FROM THE PROBE TO ITS GROUND REFERENCE, AND THE DIELECTRIC CONSTANT OF THE MEDIUM BEING MEASURED. THE AMOUNT OF CAPACITANCE DEVELOPED IN A VESSEL BECOMES DEPENDENT UPON THE AMOUNT OF THE PROBE WHICH IS COVERED WITH MEDIA. AS THE MEDIA RISES AND FALLS IN THE TANK, THE AMOUNT OF CAPACITANCE DEVELOPED BETWEEN THE PROBE AND THE GROUND REFERENCE ALSO RISES AND FALLS.THIS CHANGE IN CAPACITANCE IS DETECTED BY EMPLOYING RADIO FREQUENCY (RF) AND CONVERTED TO A DIGITAL WAVEFORM PROPORTIONAL TO THE CHANGE IN LEVEL WHICH IN TURN IS USED FOR LEVEL DETECTION AND MONITORING.
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RF TYPE LEVEL MONITORING UNIT

RF TYPE LEVEL MONITORING UNIT

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.
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Level Transmitter

We are offering level transmitter.
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Differential Level Indicator Cum Controller

The differential type level indicator cum controller is used for measurementof difference of two liquid levels. The level is detected by capacitanceprinciple. The capacitance is formed between the active electrode (flexibleteflon taped wire) and the reference wire. As the liquid level rises(or falls)the capacitance between the active electrode and reference increases(ordecreases) which is converted into equivalent signal. The output of twoprobe unit is fed to the controllerunit to display the difference in leveland operate alarm output at anydesired differential level.
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Differential Pressure Gauge Filter Clog Indicator Flow Indicator

We are offering differential pressure gaugefilter clog indicatorflow indicator.
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Membrane Level Sensor

We offer membrane level sensor. Economical, reliable and durable pointlevel detectionmultiple diaphragm materialsover-pressure protectionultra-sensitive switch optio
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