Student Digital Joulemeter
Product Code : LSK-PL-10312
Student Digital Joulemeter (SKU LSK-PL-10312) measures the electrical energy delivered to a load, from 1 J up to 999,999 J, and times the run with a built-in timer. Designed for student use, it serves energy and specific heat practicals in Class 10–12 physics and college labs. Science Lab Supplies manufactures the meter at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India; schools, colleges, tender contractors and distributors buy it from the factory directly.
Specifications
A microprocessor combined with a precision voltage multiplier calculates the energy passed to the load from 0–15 V AC or 0–21 V DC inputs at up to 10 A. Readings appear on a 2 x 16 character LCD, and a 9 V DC mains adaptor, included, powers the unit.
| Parameter | Value |
|---|---|
| SKU | LSK-PL-10312 |
| Energy range | 1 J to 999,999 J |
| Accuracy | 3% (1% typical) |
| Input voltage | 0–15 V AC or 0–21 V DC (maximum) |
| Maximum load current | 10 A AC/DC |
| Timer | Built in, with start and stop buttons |
| Display | 2 x 16 character LCD |
| Power | 9 V DC mains adaptor (included) |
| Dimensions | 90 x 90 x 33 mm |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Student Digital Joulemeter
The joulemeter replaces the voltmeter, ammeter and stopwatch otherwise used to work out energy as voltage x current x time. Pressing start powers the load and begins timing and metering together; pressing stop ends all three at once, so the energy figure matches the heating period exactly.
- Class 10 physics (Electricity): electrical energy and power in a heater or lamp circuit.
- Class 11 physics (Thermal Properties of Matter): specific heat capacity of metal blocks or water.
- B.Sc. and diploma labs: efficiency of small motors and heaters.
Standard Scope of Supply
Each order comprises the Student Digital Joulemeter with its built-in timer and the 9 V DC mains adaptor that powers it. The low-voltage supply for the load, the heater and connecting leads are separate items; heaters and calorimeter blocks from the same range can be quoted alongside.
Packing, MOQ and Lead Time
Request a quotation for a single joulemeter or for one per bench across the lab. Science Lab Supplies sets out packing, delivery time and price for the number you give, and heaters or calorimeters can be added to the same quotation.
As a registered exporter holding an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Sri Lanka, Vietnam, Malaysia, Peru, Egypt and Iraq. The business is registered under Udyam as a manufacturing enterprise (UDYAM-HR-01-0014546) and for GST (GSTIN 06ADEPJ0574F2ZU). Enquiries go through the contact page or enquiry cart; tender details are on the lab tender page.
Frequently Asked Questions
What voltages and currents can the joulemeter handle?
Inputs of 0–15 V AC or 0–21 V DC maximum, with a load current of up to 10 A AC or DC. Stay within those limits.
How accurate is the energy reading?
The stated accuracy is 3%, although 1% is typical in use. The display covers 1 J to 999,999 J, enough for long heating runs.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. The joulemeter is produced in the company's own Saha, Ambala plant in India, and the quotation you receive is issued by that plant.
Does the timer switch the load on and off?
Yes. The start button starts the timer and the joulemeter together and powers up the load; the stop button stops both and disconnects the input power from the load.
Related Heat and Energy Equipment
These four items complete an electrical-heating practical around the joulemeter: an alternative meter, a heater and the blocks or vessel it heats. Together they make a heat and thermodynamics lab equipment set for specific heat work, on one quotation.
- Joulemeter, Low Voltage — reads energy from 1 mJ to 9999 J or power up to 200 W.
- Immersion Heater — 50 W, 12 V heater with 4 mm sockets for calorimeter blocks.
- Calorimeter Heating Block — 1 kg metal blocks for specific heat capacity.
- Copper Calorimeter Set — calorimeter in an outer vessel, complete with stirrer.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
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