AP/2/ENQ/HOD/24-25 (2nd call)

Experimental set-up for Calibration of a wattmeter using DC potentiometer with following features/items: Regulated power supply 2 volts, 100 mA to operate the potentiometer. calibrated electronic standard cell voltage 1.0186 volts. Regulated power supply 0-5 volts/0.5 amps with milliammeter 0- 500mA for current coil of wattmeter. Regulated high voltage power supply 0-250 DC volts with voltmeter 0-250 volts for pressure coil of wattmeter. A panel mounting wattmeter 0-125 watt is required to perform the experiment Galvanometer for null balance. A volt ratio box for measurement of higher voltage. Complete circuit diagram with wattmeter connections to be provided on the front panel of the instrument. with standard accessories

Experimental set-up for Low resistance measurement using Kelvin’s double bridge with following features: Range: 0.2 micro ohm to 11 ohms, with an Accuracy of 0.05 % Required accessories: Spot Reflecting Galvanometer. DC Source 10 A with one analog current meter. Attachment of 1 meter length. Brass clamp with terminals for zero setting. with standard accessories

Experimental set up for Unknown capacitance measurement using De-Sauty’s bridge with following specifications: Source: Sine wave signal of 1KHz. The Amplitude of AC switch indicating lamp is provided on the Bakelite board. Two sockets are to be provided for the output of AC signals. Detector: For detecting small AC signals in the output, Null Detector is required as in-built with digital display. Circuit Diagram:The circuit layout on the board is to be provided out to facilitate convenient working. 4 or 5 mm socket required for making connection. Features: R2 --- Three decade resistance dials having value 10×1000, 10×100 and 10×10 ohms R1 ---- Single decade resistance dial having value 10× 100 ohms C1 ---- Unknown capacitor. C2 ---- Two fixed standard capacitors having value 0.01mfd 0.1mfd (loss free) With standard accessories

Experimental set-up for calibration of a 1-phase watt-hour meter with following scopes: • To adjust & calibrate a single-phase energy meter by direct loading method • To adjust & calibrate a single-phase energy meter by comparing with a sub-standard meter Specifications: • Static Energy meter single phase: Under test (Local) duly mounted, wired and terminated • Static Energy meter single phase: Sub-standard meter (ISI Mark) duly mounted, wired and terminated • Voltmeter: Moving Iron AC portable of class 1.0 accuracy and range 0 - 300 V AC • Ammeter: Moving Iron AC portable of class 1.0 accuracy and range 0 - 10 A AC • Wattmeter: Dynamometer type AC single phase, multi-range with current coil 5 / 10 Amp and Potential coil 75 / 150 / 300 V AC • Variac: Variable Voltage transformer (Portable – table / floor mounting type with enclosure) Input: 230V AC and Output: 0–270V / 8 Amp AC • Variable Load: Made up of 3 Load resistors of 70 ohms / 700 W each duly mounted and connected / terminated to form different loads (35 to 210 ohms) as per external connections • Digital stop clock: Portable with START / STOP & RESET operation • Set of necessary 4 mm spring loaded patch cords for interconnections • Detailed Instruction Manual Supply to be connected: 230V, 1phase, 50 Hz, AC mains

Experimental set-up for calibration of a 3-phase watt hour meter with following specifications: • To adjust & calibrate a three-phase energy meter by direct loading method • To adjust & calibrate a three-phase energy meter by comparing with a sub-standard meter Specifications: Static Energy meter three phase: Under test (Local) duly mounted, wired and terminated Static Energy meter three phase: Sub-standard meter (ISI Mark) duly mounted, wired and terminated Voltmeter: Moving Iron AC portable of class 1.0 accuracy and range 0 - 300 V AC Ammeter: Moving Iron AC portable of class 1.0 accuracy and range 0 - 10 A AC Wattmeter: Dynamometer type AC single phase, multi-range with current coil 5 / 10 Amp and Potential coil 75 / 150 / 300 V AC Variac: Variable Voltage transformer (Portable – table / floor mounting type with enclosure) Input: 230V AC and Output: 0–270V / 8 Amp AC Variable Load: Made up of 3 Load resistors of 70 ohms / 700 W each duly mounted and connected / terminated to form different loads (35 to 210 ohms) as per external connections Digital stop clock: Portable with START / STOP & RESET operation Set of necessary 4 mm spring loaded patch cords for interconnections Detailed Instruction Manual Supply to be connected: 440 V, 3-phase, 50 Hz, AC mains

Experimental set up for calibration of an LVDT using screw gauge with the following specifications: Measurement Range 10/20 mm Excitation Frequency: 2.5 kHz Sensitivity: 10 mV DC/ mm Linear Range: Full Scale Signal conditioner output: 0.1 V DC or maximum displacement Display: 3 1/2Digit LED with Polarity Indicator Micrometer Least count: 0.01 mm Inbuilt regulated DC supply Power Supply: 220 V, 50 Hz With standard accessories

Experimental set up for temperature measurement and calibration of a thermocouple sensor with the following specifications: K type thermocouple with digital panel meter Output for monitoring Test pins for monitoring at all stages Mercury thermometer & heater 10 watts (Optional) 3.5 digit DPM as temperature indicator Interconnection: 2/4mm banana sockets DC Supply: Built in IC regulated power supplies 220V±10%, 50Hz mains operated With standard accessories

Experimental set up for calibration of a load cell sensor with the following specifications: Bridge made up of 4 strain gauges mounted on a specially alloy materials type load cell Built in excitation voltage for the bridge 3.5 digit SSD for direct reading stain in Kg. Built in precision signal amplifier. Multi turn potentiometer for zero adjustment. Different loads to be provided for building up of load. Test pins for monitoring at all stage outputs. Interconnection: 2/4mm banana sockets DC Supply: Built in lC regulated power supplies 220V ±10%, 50Hz mains operated With standard accessories

Experimental set up for temperature measurement and calibration of an RTD sensor with the following specifications: Mercury thermometer and heater 10W RTD(Pt-100) probe with protect cover Bridge circuit for transducer Differential amplifier with feedback Lead compensation system Sockets to be provided to study the process to find out the error rate 3.5 digit Digital Panel Meter as temperature indicator Interconnection: 2/4mm banana sockets 220V, 50Hz mains operated With standard accessories

Experimental set up for calibration of a bourdon tube using dead weight tester with the following specifications: Instrument Oil is SAE 10 or 20 or equivalent. Plunger element is clamped in an MS block. Block is the junction for screw assembly, pressure gauge and oil cup. Valves to be used at the bottom of the pressure gauge and oil cup to control oil flow. The unit is to be mounted on a base plate with three leveling screws. Different known weights to be provided for calibration experiments. With standard accessories