J.p.techno Instruments

Karad, Satara, Maharashtra

This apparatus enables a comprehensive arrangement of vibration experiments to be conducted on a single Sturdy M. S. channel (100 mm x 50 mm) basic frame. The experiments are specially designed for quick and easy assembly on the frame. Many components are common to several experiments. AND THE WHOLE FRAME IS POWDER COATED.

RANGE OF EXPERIMENTS

PENDULUM EXPERIMENTSFor pendulum experiments a sub-frame is attached to the upper beam of the frame. This pendulum supported frame is provided with hardened V guide for supporting the compound pendulum. It also carries two small chucks for gripping the wires for the bi-filer suspension and simple pendulum. Following experiments can be conducted.

Expt. No. 1-Simple PendulumTo verify the relation T= 2 II S L/g & to plot the graph T2 V/s L Expt. No. 2-Compound PendulumTo verify the relation T= 2 II S k + (OG)/g(OG)To determine the radius of gyration & equivalent length of compound Pendulum.

Expt. No. 3-Bi-filer suspension- (Tensional Oscillations)

To determine the radius of gyration of body about the centre of gravity by using relation.T= 2 K/aSL/ g

LONGITUDINAL VIBRATIONSExpt. No. 4-Spring Mass SystemTo verify the relation T= 2II SW/ Km .g and plot the graph T2 Vs W. Expt. No. 5 -Equivalent Spring Mass SystemStudy of undammed natural vibrations of beam pivoted at one end supported by tension spring at the other end. Expt. No.6-Equivalent Spring Mass SystemStudy of undammed natural vibrations of beam pivoted at one end supported by tension spring at the other end, plot the of graph amplitude Vs frequency.

TORSIONAL VIBRATIONSExpt. No. 7-Single RotorTo verify the relation T= 2II S I / Kt And to study the relationship between the periodic time & shaft length.xpt. No. 8-Two Rotors To verify the relation T= 2II SIA + IB/Kt (IA+IB) And plot a graph of F Vs 1/ I 1Expt. No. 9-Single Rotor with Viscous DampingTo find out the damping coefficient Ct for various depth of damping drum (immersed in liquid) & to plot a graph of damping torque Vs depth of damping drum.Expt. No. 10 To find out the natural frequency of beam with & without load & to verify the Dunkerleys Rule.Expt. No. 11 To study the forced vibrations for various amount of damping & to plot a graph of amplitude Vs frequency.

ACCESSORIES Exciter unit with fractional H. P. Electric Motor.Ordinary strip chart recorder for recording vibrations.Damper with arrangement for changing damping.

SERVICE REQUIREDSingle Phase 15amp electrical ConnectionFloor space area of about 2 m x 2 m

This is widely used for determination of closed cup Flash Point of Fuel Oil, cut back asphalts, other viscous material and suspension of solids having a flash point about 490C(1200F).The apparatus serve the purpose according to IP 34, ASTM-D-93-58T, IS-1448(P:I) 1960(P:21) and IS 1209/1958 method B. The apparatus consists of Brass Test cup with handle removable cup cover with spring operated rotating shutter having pilot jet, stirrer with flexible shaft. The assembly rests in Air Bath which is covered with Dome shape metal top. The cup is fitted with insulated handle and locking arrangement near cup plunge. The assembly rests on a round shaped heater with different temperature regulation system suitable for operation on 220 Volts AC mains.

SERVICE REQUIRED:-

Diesel OR 20w/40 Lubricating Oil Sample. Matchbox.Ghee.Suitable Table space to mount apparatus.15 Amps. Single Phase Electrical Connection

The J P T I unit consists of a base upon which bearing holders and driving motor is coupled. Bearing holder is provided for fitting various bearing to provide different conditions for test shafts, viz. both end fixed and one end free. A variac provided for speed control of driving motor. The unit demonstrates the phenomenon of whirling of shaft. After the test shaft cannot be used, hence unit only demonstrate the principle.

One kinematic coupling and bearing for fixed or free ends without restraint. An electric motor: Universal, 5000 rev/min. frictional horse power. A dimmer stat for controlling speed of motor. RANGE OF EXPERIMENTSDisplay of the various models of whirls for a range of shafts withBoth end DIRECTIONALLY FREE.One end FIXED and other FREE. Models of vibration can be studied and the frequency can be measured each case. SERVICE REQUIRED Single Phase 15amp Electrical Connection.Tachometer to measure the speed.Suitable floor space area to mount the instrument.

The J P T I unit consists of an epicyclic gear train. Gear train consist of an internal gear having 56 teeth two planet gears with 21 teeth each and sun gear having 14 teeth. The train is driven by a 3-ph/1-ph, 1440 R.P.M. motor giving maximum input torque of 0.5 kg/m. The planet carrier carries the planet gears. The internal gear is mounted over a flange which rotates in bearings. A pulley is mounted over a output shaft of internal gear. Torque measurement arrangement with spring balance is provided for both the internal gear and planet carrier, so that either or then can be held stationary and holding torque required for stationary member and output torque for the other member can be measured. The whole unit is mounted over a sturdy frame. Motor current is calibrated for output torque of the motor. A three channel R.P.M. indicator (digital) can be supplied with the unit at an extra cost which enables to determine the angular velocities of all the members. A digital torque indicator for motor output torque can be supplied at an extra cost, instead of motor current calibration.

SERVICE REQUIRED:-Single Phase 15amp Electrical Connection.Floor space of about 1.5m. X 2m.

The J P T I unit consists of a main spindle driven by variable speed motor. Spindle can be fitted with four different governor assemblies. A scale with pointer is provided. We can calculate each characteristics of each governor at different speed and compare the performance.

SPECIFICATIONDrive unit - D.C. motor 0 - 1500 R.P. M.Watt, porter, Hartnell and Proell Governor.

RANGE OF EXPERIMENTSWatt, porter, Hartnell and Proell Governor. Determination of characteristics and comparison with theoretically predicate controlling force curves. Porter and Proell Governors:-The effect of varying the mass of the centre sleeve. Proell Governors:-The effects of varying the rotating mass. Hartnell Governor:-The effects of varying the following parameter.Initial spring compression.

SERVICE REQUIREDSingle Phase 15amp Electrical Connection.Suitable bench area for mounting the instruments.

Redwood viscometer apparatus are widely used in Petroleum Laboratories, Industries, Oil Refineries, Educational Institutions, and Research Organisations for standardisation and determines the Viscosity of Petroleum products, which flows in a Newtonian liquid except cut back Bitumen and road oils at the set temperature, they confirm to requirement of IP 70. Two adaption of Redwood Viscometers are available. Redwood Viscometers No. I for liquids having Redwood Flow 20 seconds to 2000 Seconds and Redwood Viscometers No. II exceeds 2000.The complete outfit comprises hammertoe finish, copper/Stainless steel bath with drain plug, electrical heating arrangement, Suitable to operate at 220 Volts 50 Hz AC mains Or gas heating arrangement with silver plated oil cup with precision stainless steel jet, ball value, cover, thermometer clip, stirrer and suitable stand with levelling screws. The sample required to be tested, is to fill in to the required level as indicated by the gauge in a cup having a Stainless Steel jet fixed in the bottom. The temperature is maintained during the test by heating the liquid in a bath surrounding the cup, and the flow time for 50 ml of the sample is measured.

SERVICE REQUIRED:-20w/40 Lubricating Oil Sample.Suitable Water.50ml Glass Beaker. Suitable Table space to mount apparatus.15 Amps. Single Phase Electrical Connection

Here simple demonstration setup is provided to experiment with calibration procedure of load cells. Here using this setup one can calibrate different types of Load cells. SPECIFICATIONS1. Common Mechanical setup to fit various types of load cells.Beam Type Load cell- 1 no.S Type Load cell - 1 no.Compression Type Load cell - 1 no.2. Common indicator with necessary signal conditioning circuit.3. Common Weights: - Max 20 kg in steps of 1kg4. Digital Indicator: -Least Count: - 0.1 kgDigit: - 3 1/25. Powder coated enclosure.

The J.P.T.I unit consists of a three concentric pipes of a very small thickness as compared to diameter. They are arranged concentrically over two supports and closed with the help of two discs. The annual in between the cylinders are filled completely by two different insulating materials. Thermocouples at proper position are used to measure the temperature. Inside the inner pipe a nicrome wire heater is placed. Heat input to the heater is given through a variance and measured by a voltmeter and ammeter. By varying the heat input rates wide range of experiments can be performed. SPECIFICATION:-G.I pipe inside - 60 mm dia. Approx.G.I. pipe middle - 110 mm dia. Approx.G.I pipe outer - 156 mm dia. Approx.Length of pipes - 1000 mm Approx. FEATURES:Effects of different insulating material combinations can be seen.Easy to operate.Ideal for group studies and demonstration.

RANGE OF EXPERIMENTS:-To determine the heat transfer parameters for the heat flow through lagged pipe.

SERVICE REQUIRED:-Suitable bench area to mount the instrument.15amp, Single Phase A. C. electric supply with earthing connection.

The J.P.T.I. unit consists of a brass or aluminium fin of a circular cross section fitted across at one end of a long rectangular duct. The other end of the duct is connected to suction side of the blower and the air flows past the fin perpendicular to its axis. One end of the fin projects outside the duct & is heated by an electric heater. Temperature at five points along the length of the fin is measured by thermocouples. The blower is not run in natural convection condition while it is run in forced convection conditions. The air flow rate can be varied by control valve on delivery side of the blower.

SPECIFICATION:-Material of Fin - BrassLength of the Fin (L) - 150 mmDiameter of Fin (D) - 12.5 mmDiameter of Orificemeter - 14 mmDiameter of Delivery Pipe - 38 mmCoefficient Discharge of Orifice meter(Cd) - 0.65No. of thermocouples mounted on the Fin - 5No. of thermocouples in the Duct (Ambient) - 1Heater - Band typeNo. of thermocouples - 6 Position 1 to 5 - on the FinPosition 6 - in the Duct Dimmerstat - 1000 wattVoltmeter - 0 - 300 voltAmmeter - 0 - 5 ampTemperature Indicator - 0 3000 CManometer - Water ManometerThermocouples - Cromel-Alumel

RANGE OF EXPERIMENTS:-To study the temperature distribution along with the length of fin in Forced convectionand Natural Convection

SERVICE REQUIRED:-Suitable floor space.15 amps, Single Phase A. C. supply with earthing connection.

Used for determining the Viscosity of fuel oil and lubricating oil both thin & thick. The apparatus consists of Stainless Steel bath with oil cup which is centrally placed in a water bath. The bath has a lid which contains a water cooling tube, two handle with two stirrer blades, thermometer socket and a straight heater, stirring is done by turntable arrangement. A thermometer can also be inserted into the cup cover. The jets one universal and one Furol can be screwed to the cup by a handle (without strainer, withdrawal tube and glassware) can operate on 220 Volts AC mains.

SERVICE REQUIRED:-Fuel Oil OR Lubricating Oil sample.Suitable Water. Suitable Table space to mount apparatus.15 Amps. Single Phase Electrical Connection

The J. P. T. I. unit consists of a copper bar, which is heated at one end, a Cold water jacket is provided at other end. The test section of bar is properly insulated and along the length of bar, thermocouples are attached. Heat conducted through the section of bar is measured by thermocouples and also heat dissipated in water measured by thermocouples. A panel comprising of controls and measurements is provided, which provides easy operation and study mounting of unit.

SPECIFICATIONS:-Material of metal bar - CopperLength of the metal bar (Total) - 510 mmDiameter of metal bar - 25.4 mmTest length of bar - 292.5 mmNo. of thermocouples mounted on the bar - 6No. of thermocouples in the insulation shell - 2Heater - Band typeCooling jacket diameter - 75 mmNo. of thermocouples - 10 Position 1 to 6 - on the barPosition 7 & 8 - in the shell.Position 9 & 10 - cooling water in & out Dimmerstat - 1000 wattVoltmeter - 0 - 300 voltAmmeter - 0 - 5 ampTemperature Indicator - 0 3000 C

SERVICE REQUIRED:-Bench area to mount equipment15amps Single Phase, AC electric supply with earthing connection.Continuous Water supply at constant head.

The JPTI unit consists of mainly a centrifugal blower, electrically heated test section, control valve to regulate the air flow and an orifice-meter and U-tube water manometer for flow measurement. Thermocouples are used to measure the pipe wall temperature and also the air temperature at inlet and exit. The apparatus mainly designed to find out the value of heat transfer coefficient under the air different conditions.

SPECIFICATION:-Temperature indicator = 0 300 0CAmmeter = 0 - 5 AVoltmeter = 0 300 VDimmerstate = 1000 wattHeater = Mica Covered TypeDelivery Pipe Diameter (di) = 0.032 mLength of test Section (L) = 0.44 m Orificemeter Diameter (do) = 0.014 mBlower = 1/3 H.P. Single Phase with MotorManometer = Water Manometer Test Section Insulation = Asbestos Rope Thermocouple - No. 1 to 6 on the Test SectionThermocouple - No. 7 Inlet Temperature of Air to Test Section Thermocouple - No. 8 Exit Temperature of Air From Test Section Thermocouples = Cromel-Alumel

FEATURES:-Heat transfer in forced convection can be studied well.The value of heat transfer coefficient is calculated under various fluid flow conditions.Ideal for group studies & demonstration.

RANGE OF EXPERIMENTS:-To study the temperature distribution along the length of test section by -Forced convection

SERVICE REQUIRED:-Suitable bench area to mount the instrument.15 amp single Phase A. C. supply with earthing connection.

Orsat Gas Analysis Unit, with our absorption pipettes of two compartment type. 100ml gas burette with outer jacket, manifold with stopcock, and aspirator bottles, palladium asbestos tube, adjustable spirit lamp for the analysis of CO, CO2, H2 and nitrogen complete in wooden cabinet with sliding door.(Chemicals not in the scope of supply & would be supplied at extra cost) SERVICE REQUIRED:-

Required Chemicals. Suitable Table space to mount apparatus.

The J P T I unit consists of a precision ground shaft rotating freely in ball bearing. For static balancing demonstration, an eccentric weight creates unbalance and value of relative weight require to balance the eccentric weight statically is determined. For dynamic balancing apparatus four weight assembly mounted on shaft is provided. Longitudinal and Angular position of weights are calculated from respective relative weight and the weight are mounted at the position. The rotation is vibration free when rotated by small motor. SPECIFICATIONDrive motor - Frictional horse power.Four balances weight each containing a different sized Eccentric for varying the unbalance.Additionally the containers, quality of precision made steel loading balls are supplied. FEATURESIndependent analysis of static and dynamic balancing.Adjustable balance weights with variable moments.Balance weight position accurately measured both radially and longitudinally.Machine can be suspended on chains for dynamic balancing.Completely portable and suitable for classroom demonstrations. RANGE OF EXPERIMENTSUsing the four weights provided Static balancing of the system using amoment polygon construction.Dynamic balancing of the above system by calculating the position of the weights along the shafts, by resolving and taking moments about one end of the shaft. SERVICE REQUIREDSingle Phase 15amp electrical Connection.Suitable floor space for instrument.

The J P T I unit consists of a cylindrical glass container containing distilled water. Heating surface is in the form of a Nichrome heating wire completely submerged in the water. Thermometers are provided to measure the temperature of water in the container.

SPECIFICATION:-Glass Container - Dia. 250mm & Height 100mmVoltmeter - 0 - 300 V Ammeter - 0 - 5 ADimmerstat - 10 ampHeater (For water Heating) - Nichrome Type.Length of the Test Heater wire - 100mmThermometer - 0 - 100 0C

FEATURES:-Pool boiling phenomenon can be studied at atmospheric pressure.Ideal for group studies & demonstration for boiling regions up to critical heat flux conditions.A range of experiments can be performed with varying degree of sub cooling.

SERVICE REQUIRED:-Suitable bench area to mount the instrument.15 amps, Single Phase A.C. supply with earthing connection

This is made as a specified by IP-15, ASTM-D-97/57 & IS-1448-1970 the pour point is the lowest temperature at which the oil will just fail to flow. The apparatus consists of a main cooling bath made of stainless steel sheet and stand unit with drain plug and cover with provision for fitting thermometer and a filling aperture for adding freezing mixture. A glass jar for containing oils, jacket, disc and gasket as specified are also provided.

SERVICE REQUIRED:-20w/40 Lubricating Oil Sample.Salt.Ice.Suitable Table space to mount apparatus.

The J P T I consists of vertical cylinder fitted in a large enclose, with top and bottom open to ensure undisturbed natural convection apparatus. Perspex sheet provided at the front side of enclosure for visual display. Heating element provided inside the cylinder to heat it uniformly and the heat is dissipated from other surface by natural convection to ambient air. Thermocouples cylinder surface and one more thermocouple record the ambient temperature in the duct. The heater input can be varied with the help of a dimmerstat and measured by voltmeter and an ammeter. SPECIFICATION:-Diameter of the Brass Cylinder - 38 mmLength of the Brass Cylinder - 540 mmHeater - Cartridge Type.Temperature indicator - 0 - 300 0CVoltmeter - 0 - 300 VAmmeter - 0 - 5 ADimmerstat - 1000 wattThermocouple - No. 1 to 7 on the Brass CylinderThermocouple - No. 8 Duct (Room) Temperate

FEATURES:-Heat transfer coefficient in natural convection conditions can be calculated.Variation of local heat transfer coefficient over the entire length of verticalcylinder can be studied.Average value of heat transfer coefficient can be obtained from suitable correlation& can be compared with the experiments can be performed for various values of heat input.Ideal for group studies demonstration.

SERVICE REQUIRED:-Suitable bench area.15 amps, Single Phase A. C. supply with earthing connection

The J.P.T.I. unit consists of a three slabs of different materials namely mild steel, wood & Bakelite. Nicrome heater is provided to supply heat input across these composite walls. Total heater assembly comprises of a heater bound between two aluminium plates, on both sides of this heater identical structures of composite wall are placed. Thermocouples are provided at proper position in the composite wall to record desired inside temperature of composite wall. Multichannel temperature indicator is used to measure this temperature. Small hand press provided to press the wall on each other & to ensure that no air gap remaining between two plates. Heat input to heater is given through a variance & measured by voltammeter & ammeter. By varying heat input & combinations of the composite structure wide range of experiment can be performed.

SPECIFICATION:-Diameter of Slab = 0.3 mThickness of Bakelite plate = 0.012mThickness of Press Wood plate = 0.012 mThickness of MS Plate = 0.012mTemperature indicator = 0 300 0CAmmeter = 0 - 5 AVoltmeter = 0 300 VDimmerstate = 1000 wattHeater = Mica Type

FEATURES:-The temperature distribution across the composite wall can be studied for givenarrangement of slabs.The change in temperature distribution across the composite walls by alteringcombination of slabs can be observed.

RANGE OF EXPERIMENT:-To determine total thermal resistance and thermal conductivity of composite wall.To plot temperature gradient along composite wall structure.

SERVICE REQUIRED:-Suitable bench area to mount the instrument.15 amps, Single Phase A.C. with earthing connection.

It is used to determine the amount of carbon deposit when oil is evaporated under specified condition. The Carbon residue values or crude oil, residue etc. are useful in the manufacture of various lubricants. The Apparatus consists of Spun Sheet Iron Crucible 25cc capacity, sheet iron hood and sheet iron block on a stand with triangular wire bridge. SERVICE REQUIRED:-

20W/40 Oil Sample.Glass Syringe.Digital Weight Pan.Burner.Test Tube Holder. Suitable Table space to mount apparatus.

This apparatus is used for penetration test on a wide variety of materials such as grease, Petroleum, Bitumen, Tar, Wax, Polish, food stuff, Rubber asphalts and pharmaceuticals Creams. A given force is applied over a given of a millimetre and expressed as penetration. It consists of a head support mounted on a vertical rod which can be adjusted for height. A rack and pinion and pointer assembly provides fine adjustment of a needle tip to sample and incorporates a slipping clutch mechanism which makes reading of Penetration and subsequent resetting of a sample and accurate operation. The dial is graduated from 0-400 in on tenth millimetre Sub Division. The instrument is supplied with two samples containers made of aluminium. The penetration is the distance in millimetre that a standard needle penetrates vertically into a sample of the material under fixed conditions of loading time and temperature. This instrument measures the reading on round dial fitted on a Aluminium Painted stand having adjustable penetration needle, holder sample container and transfer dish.

SERVICE REQUIRED:-Grease Sample.Suitable Table space to mount apparatus

This is used for determining drop point of greases as per IP 31, 132 & ASTM-D-566. It is an indication of the critical temperature of the solid or semi solid to the liquid state. The apparatus consists of brass sleeve and case with metal cup and a glass boiling tube with cork fitted to a bath (Beaker) is provided a stirrer is also provided in the bath.

SERVICE REQUIRED:-Grease Sample. Suitable Table space to mount apparatus.15 Amps. Single Phase Electrical Connection .

The J. P. T. I. unit consists of a hemisphere surrounded by hot water. The instrument determines Stefan Boltzmann constant. Water heating tank is provided to supply hot water. Stefan Boltzmann constant is determined from the temperature raise rate when blacked disc is inserted at the centre of disc from hemisphere by radiation & its temperature begins to rise.

SPECIFICATION:-Hemisphere dia. - 0.205 m.Base Bakelite plate - 0.05 m.Test disc dia. - 0.0195 m.Thickness of test disc - 0.003 m.Thermocouples on hemisphere - 4 Nos.Water tank of capacity with immersion heater. - 8 litreThermocouple on test disc - 1 No.Temperature indicator. - 0-300 oC FEATURES:-The phenomenon of heat transfer by radiation can be understood well.Stefan Boltzmann constant can be calculated.Easy to operate.Ideal for group studies and demonstration.

SERVICE REQUIRED:-Suitable bench area to mount the instrument.15 amps, Single phase A. C. supply with earthing connection.

This Apparatus determines melting point of petroleum products. it is made according to IP 133 and ASTM-D-127/49. IT consists a rectangular block of aluminium with built in electric heating element. The temperature is controlled by energy regulator .An adjustable lens is provided for viewing exact melting point supplied with capillaries. SERVICE REQUIRED:-Suitable Petroleum Product Sample.Suitable Table space to mount apparatus.15 Amps. Single Phase Electrical Connection .