Instrumentation

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.
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The Displacement Measuring Setup is designed to demonstrate and measure linear displacement using an LVDT (Linear Variable Differential Transformer). It features a ±10 mm range LVDT sensor interfaced with a digital indicator capable of displaying up to ±1999 counts. The system comes equipped with front panel potentiometers for easy zero adjustment and calibration, making it suitable for precise measurements in laboratory or industrial environments.

Key Features

• ±10 mm LVDT range with high-resolution indicator

• 3½ digit digital display for clear and accurate readings

• Easy front panel calibration and zero adjustment

• Low system inaccuracy and high repeatability

• Robust 6-core shielded cable with DIN connector for stable signal transmission

• Operates on standard 230V AC power supply

The Light Dependent Resistance (LDR) Measurement Trainer is a versatile educational module designed to study the characteristics and behavior of LDR sensors under varying light intensities. The trainer features a linear variable resistor for manual simulation, with both linear and angular displacement options available. An adjustable excitation source and regulated power supply enable dynamic experiments, while test points and an external LDR provide full measurement visibility and accessibility.

Key Features

• Models support both linear and angular displacement measurements

• Adjustable excitation voltage (0–10V peak-to-peak) and frequency (50 Hz to 1 KHz)

• 3½ digit LCD display for clear resistance/voltage readouts

• Built-in regulated 0–5V DC power supply

• External LDR sensor with accessible 2mm output connectors

• 12V variable bulb light source for controlled illumination

• Multi-colored 4mm test points for waveform observation and interconnections

The Multiplexer and Demultiplexer Trainer is a digital electronics training system used to understand data selection and distribution techniques. It allows students to perform experiments on MUX and DEMUX circuits using onboard ICs, switches, and LED indicators.

A multiplexer selects one input from many inputs and forwards it to a single output, while a demultiplexer distributes one input signal to multiple outputs. This trainer provides hands-on learning through real-time circuit connections and observations.

  Key Features

• Built-in regulated +5V power supply

• Multiple MUX and DEMUX ICs onboard

• Interactive input switches for logic control

• LED indicators for output visualization

• Pulse generator for clock/input signals

• Patch panel for flexible connections

• Clearly labeled test points

• Compact and durable design

• Supports multiple experiments

 Applications

• Study of digital switching circuits

• Implementation of Boolean functions using MUX

• Used in communication systems for data routing

• Memory addressing and decoding

• Teaching aid in engineering laboratories

• Used in data acquisition systems

The Strain Measurement Trainer is a comprehensive educational tool designed to teach the fundamentals of strain gauge-based measurements. Featuring a stainless steel beam with precision foil-type resistance strain gauges, the setup offers hands-on experience in calibrating and analyzing strain under applied loads. With its rigid metal mounting and convenient connector interface, the trainer provides a stable and reliable platform for learning stress-strain principles.

Key Features

• Stainless steel beam with high precision strain gauges

• 3½ digit indicator for clear strain value readings

• Potentiometer-based bridge balancing for accurate calibration

• 10V DC bridge excitation for optimal sensitivity

• Sturdy, rigid metal frame for reliable beam support

• Compatible with educational labs and training modules

The V-Tech Low Resistance Jig ZLI0024 is a high-accuracy testing fixture designed for low-resistance measurements in electronic, industrial, and laboratory applications. Engineered for precise and repeatable connections, this jig ensures reliable resistance testing of components such as bus bars, connectors, PCB traces, and power resistors.

Key Features:

• High-Precision Low-Resistance Measurement – Ensures accurate readings for ultra-low resistance components.
• Four-Wire (Kelvin) Connection – Minimizes lead and contact resistance for enhanced accuracy.
• Robust & Durable Construction – Designed for long-term use in demanding testing environments.
• Easy-to-Use Clamping Mechanism – Provides stable and repeatable connections for consistent results.
• Compatible with Precision Ohmmeters – Works seamlessly with micro-ohmmeters and resistance meters.
• Low Thermal EMF Design – Reduces errors due to temperature variations, ensuring stable measurements.

The Notch Apparatus is a precision-engineered setup for academic and experimental analysis of flow measurement over notches. Constructed with mild steel tanks and a brass notch for durability, this apparatus is ideal for demonstrating discharge characteristics in open channels. It includes a measuring tank with a drain valve and gauge glass for accurate volume readings and a sump tank for water recirculation.

Key Features

• Brass notch for accurate flow measurement

• M.S. storage and sump tanks for durability

• Measuring tank with gauge glass and drain valve

• Compact, easy-to-install educational setup

• Operates on a single-phase power connection