Micro Ohm Meter
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Contact resistance micro-ohm meter is available in two models. One with max 100 a dc max other is having 200 amp dc max. It is important to measure the contact resistance of a high voltage contact joint or of a circuit breaker with high current . IEC specifies minimum 100 A . Circuit breaker contact resistance meter employs constant current source and test is based on four terminal measurement method and hence the effect of test cable resistance is eliminated. The instrument is provided with large LCD display to show the test current value, measured resistance value. There is internal printer through which the results can be quickly printed or results can be saved to pc through a USB port. In case the instrument reaches a high temperature level, user gets high temperature alarm. Brief specifications: Test current : 50 A or 100 A dc ( model for 100 A) 50A/100A/150A/200A dc ( model for 200A) Resistance range: 1-39999.9 嵉„¦/ 1-19999.9μ Ω( 50 A/100A) 1-12999.9 μ Ω /1-9999.9 μ Ω( 150A/200A) Accuracy: 0.5% ± 0.5 μΩ Maximum output voltage: 5v Power: AC 220V± 10% Frequency: 50 hz Operating temperature: -20 ËšC- 40 ËšC Relative humidity: â‰Â¤ 80%rh, no condensing Weight: 8 kg( 100 A version) . 10 kg( 200A version)
Skinfold Callipers
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Libratherm offers digital large display industrial grade Hygro-thermometer to monitor in the surrounding environment the Temperature and Humidity values on redgreen display. Large display size allows long distance visibility and hence ideal for Industrial use and can be easily mounted at height on the wall. The integrated standard T +Rh sensor module is available with 2-meter cable and for long distance sensing very much away from the display unit, suitable Libratherm make T +Rh transmitter can be used. To generate audiovisual alarms on deviation of T and Rh values from the desired settable values the inbuilt indicating lamps with beeper are provided in model HTI-2000-A and HTI-4000-A.
Voltage Scanner
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Libratherm Digital Voltage scanner model LVS-3, designed to monitor the incoming 3 phase AC supply voltage. It displays the AC voltage across 2 phases (like RY, YB & BR) sequentially at regular interval of time. LVS-3 also monitors one of the phase failures and phase reversal condition, under voltage and over voltage condition compared to the factory set values. The respective status is indicated on the front panel LEDs. In case of any of the abnormalities in the supply voltage a relay output is provided to indicate the false conditions. Under normal operation the relay will remain energized and under faulty condition the relay de-energizes. The relay contacts (rated for 5A @ 230VAC) can be used to trip the external load or contactor operating on 3-phase AC supply. LVS-3 is a useful instrument to protect the 3 phase loads like AC motors and it is widely used by the electrical panel builders. LVS-3 is rugged, reliable and field proven and is available in 14 DIN size of (96 x 96 x 120) mm. ApplicationProtection of 3 phase loads like motors, pumps, transformers etc… against failure and reversal of any one phaseSuitable to use on Electrical control panels
dynamometer
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The DYNA-4000 is an instrument for testing the resistance ability on PET bottle or cans.Designed for easy operation and maintenance, and fully conforms to tests requirements according to international standard. The pressure test of containers is made up to a predefined pressure point (trial test) or until destruction. CHARACTERISTIC PLC integrated User-defined test cycle (up to 4 step of force and holding time) satisfies test request Full stainless steel and aluminium machine Various safety design RS232C output Touch screen LCD Dynamic Display: satisfies/ hour/ date Display: product name/ operator/ batch N0/ sample N0 Can store 10 operators and 30 products User defines the batch number and sample number Reviews the real time testing graph
3 Ph Voltmeter with Built in Selector Switch
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Oscillating Disc Rheometer
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The oscillating Disc type Rheometer is an efficient, simple and reliable testing equipment. It is quite easy to operate. The Rheometer describes precisely and quickly curing and processing characteristics of vulcanizable rubber compounds. It works on a very simple principle. A test piece of rubber compound is contained in a sealed test cavity under positive pressure and maintained at a specified elevated temperature. A Rotor ( biconical disc )is embedded in the test piece and is oscillated through a small specified rotary amplitude. This action exerts a shear strain on the test piece and the torque (force) required to oscillate the disc depends upon Stiffness (shear modulus) of the rubber compound.The stiffness of the specimen compound increases when cross links are formed during cure. The direct Proportionately posited between the shear modulus and the cross linking density is based on the statistical theory of rubber elasticity .At a constant temperature of the test, a cross linking isotherm is the function of time of that property which serves to measure the course of the cross linking reaction. In the context of Rheometer, the cross linking isotherm is thus the function of time, of the oscillating shear force F, or of the Rheometer indication proportional to it, occurring at a given temperature as a result of vulcanization. A plot of this torque (force) value against time gives a typical graph called "Cure Curve or Rheograph". A trained eye can monitor the initial trough i.e. processing behavior of the compound, the slope of rise during cure phase i.e. curing characteristics and final shape of the curve. Internationally designated parameters like MI, MH, TS2, TS5, TC50, TC90 etc. are markers which can be used to describe a graph. The Cure Curve obtained with Rheometer is a finger print of compound's vulcanization & processing character. ApplicationIn order to produce consistent quality of rubber product, it is of vital importance that compounded rubber is of consistent quality. The process of mixing is subject to variations due to Ingredients variations Machinery variation Man variation Batch to batch variation as the compound is mixed in batches. To minimize the effect of above four variables one has to design technique to overcome it. If randomly selected batches are subjected to Rheometeric analysis, one could in a large sample size, workout upper and lower control limits, range, mean and standard deviation, with reference to Rheological parameters. Each batch on testing can be classified in Pass/Fail criteria depending upon the quality control limits. Based on this, the internationally acceptable control called "Statistical Quality Control" (SQC) can be designed. One can also design quality control gates which can be marked on the screen so that a quick decision can be made regarding acceptability or rejection . Rheometer is a versatile instrument and of numerous applications . A compounder can use it to his advantage in areas like development of new compound, rationalization of existing compound both in terms of quality and economics, optimization of curing process in the manufacturing process to get a better yield. It is up to the user to design his own techniques with the help of this excellent tool to suit his process.
Multi Range Viscometer
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We are offering herzog multi-range viscometer (hvm 472) determines direct kinematic viscosity of transparent and opaque liquids fully automated. The easy to operate hvm 472 includes 2 multi-range capillaries with 100 fold measuring range, requires only 18 ml, and delivers precise results. A revolutionary auto sampler offers truly continuous operation, spent sample vials automatically discharge, allowing new samples to be added at any time, even mid-test! for rapid analysis within viscosity range of 0.5 to 600mm2s, the hvm 472 offers the smart alternative to run samples using 20-fold range fast run (fr) capillaries. The hvm 472 shows excellent precision and accuracy in full compliance with astm d445.