Our Products
Our offered Product range includes Electric Digital Temperature Controller, Dual Setpoint Temperature Controller, Curie Temperature Kit, Programmable Digital Temperature Controller and Bosch Digital Wall Temperature Scanner.
V- TECH manufactures a very extensive package of process controllers. The single and dual-loop controllers are microprocessor-based and modular built. They are standard equipped with different control algorithms, including on-off, PID-A, PID-B and TPSC.Thermocouple health alarms, Accutune III automatic PID-tuning and Fuzzy Logic overshoot suppression are among the possibilities. Remote setpoints, digital inputs, alarm relays and transmitter power are a few of the numerous other options. A series setpoint programs, for example for annealing furnaces that have to run a temperature program, completes the portfolio.
VT DC1000 Series digital controllers
General purpose controllers
VT DC1010: 1/16 DIN 48 x 48 mm
VT DC1020: 1/8 DIN 48 x 96 mm
VT DC1030: 3/16 DIN 72 x 72 mm
VT DC1040: 1/4 DIN 96 x 96 mm
1 universal analog input
2 control outputs 4-20mA, relay or SSR
Alarm relay
Optional setpoint programming
The V-Tech Dual Setpoint Temperature Controller is a precision-engineered device designed to maintain accurate temperature control in industrial, laboratory, and commercial applications. This advanced controller allows users to set two independent temperature setpoints, ensuring precise regulation for heating and cooling processes.
Key Features:
Dual setpoints for independent temperature thresholds
High-accuracy microprocessor-based control
User-friendly interface with an intuitive digital display
Versatile compatibility for various heating and cooling applications
Reliable performance with durable design and high-quality sensors
Alarm sys
Objective: Determination of dielectric constant of PZT material with Temperature variation and thus determining Curie Temperature.
Theory: Ferro-electricity usually disappears above a certain temperature called the transition (or Curie) temperature. Knowledge of the Curie temperature and the variation of the dielectric constant below and above the Curie temperature are of interest to the physicists and the engineers.
In this experiment an LC circuit is used to determine the capacitance of the dielectric cell and hence the dielectric constant. The circuit details are shown below:
DC : Dielectric Cell
SC : Standard Capacitor
L : Induction
X : Ferroelectric Sample
The dielectric cell DC is placed in PID controlled hot air furnace. The temperature of the furnace can be measured by inserting a thermocouple in a hole (provided on one of the Teflon discs), so that it touches one of the capacitor (metal) plates.
The audio oscillator is incorporated inside the instrument. If CSC and CDC represent the capacitances of the standard capacitor and dielectric cell respectively and if VC1 and VC are the voltages across SC and DC then
By measuring VSC & VDC and using the value of CSC we can determine the capacitance of the dielectric cell containing the sample.
If C0 represents the capacitance of the dielectric cell without the crystal and the plates separated by air gap whose thickness is the same as the thickness of the crystal then C0 is given by
Where r represents the radius of the crystal and d represents its thickness
The dielectric constant of the crystal at any given temp. is given by
The Setup facilitates determination of dielectric constant of PZT sample at different temperature. Dielectric Constant increases as temperature increases, and near Curie temperature, it shows a steep increase and reaches a peak at Curie Temperature.
Features:
High Accuracy Control
History management
300 pattern setting
Temperature & Humidity PID group
Convenient communication data management
Various output type.
Nunes Instruments , is in the field of Instrumentation Sales Service & Repairs with 40 years of experience. We provide service & repairs to your old high precision instruments and equipment. We provide cost effective service & Repair to any brand, any make instruments with service warranty. Why not try once?
Instruments of Any Type, Any Make, Analog/Digital, Any Condition Indian or Import
Laboratory Instrument, Test Equipment,
Scientific, Measuring, Precision Instrument,
Analytical, Bio Medical, Survey, Electrical,
Electronic Instruments , Weather, Metrology.
VT120 features Spot Detection technology that can detect objects instantly when placed on a wall, panel or foor. Since the VT120 never needs calibration, can focus on the job without worrying about accuracy. Three modes drywall, universal and concrete make this the right detector for multiple jobs. Universal mode sees throughmore material, it sees "anything in anything". This device offers sound and a light to show user when something is detected behind a wall, panel or under fooring.Intuitive radar scanner for almost all materials User benefit incl. Reason to believe Spot measurement provides accurate detection on narrow surfaces.Centre finder offers visual guidance, to clearly identify the precise location of the object's centre.Dual Power Source allows for use with a 12 V Li-ion battery or with standar d alkaline batteries.
Mr. Sebastian Francis Nunes (Nunes Instruments)
11A/1, 11A/2, Sundaram Street, Rathinapuri, Coimbatore, Tamil Nadu - 641027
https://www.v-techasia.in
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