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. The meter is manufactured by Science Lab Supplies at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and the factory itself issues quotations to schools, colleges, tender contractors and distributors.
Specifications
The joulemeter's ranges, limits and controls are set out below. In short, a microprocessor with a precision voltage multiplier works out the energy passed to a load from 0–15 V AC or 0–21 V DC at up to 10 A, shows it on a 2 x 16 character LCD and runs from an included 9 V DC mains adaptor.
| Specification | Value |
|---|---|
| SKU | LSK-PL-10312 |
| Design | Designed specifically for student use |
| Energy range | 1 J to 999,999 J |
| Accuracy | 3% |
| Typical accuracy | 1% |
| Circuitry | Microprocessor combined with a precision voltage multiplier |
| Input voltage | 0–15 V AC or 0–21 V DC (maximum) |
| Maximum load current | 10 A AC/DC |
| Timer | Built-in timing function |
| Start button | Starts timer and joulemeter together and powers up the load |
| Stop button | Stops timer and joulemeter and disconnects input power from the load |
| 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 circuit or in one of the Miniature Lamps on Clamp Stands.
- 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, checking the reading against V x I x t from a Digital Multimeter.
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. A low-voltage supply for the load, a heater and connecting leads can be added to the quotation, along with heaters and calorimeter blocks from the same range.
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 a heater, calorimeter or power supply 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). An energy-practical order can be sent from the contact page or listed in the enquiry cart, and tenders go through 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. Keep the load supply within those limits during every run.
How accurate is the energy reading?
The accuracy is 3%, although 1% is typical in use. The display covers 1 J to 999,999 J, which is enough for long heating runs in a specific heat practical.
Is Science Lab Supplies the manufacturer or a trader?
The joulemeter comes from Science Lab Supplies' own factory in Saha, Ambala, India, which manufactures it and sends the quotation, so no trading firm stands between the maker and your laboratory.
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 seven items complete an electrical-heating practical around the joulemeter: an alternative meter, a power supply, a heater and the blocks or vessels it heats. Together they make a heat and thermodynamics lab equipment set for specific heat work, all on one quotation.
- Joulemeter, Low Voltage — reads energy from 1 mJ to 9999 J or power up to 200 W.
- AC/DC Laboratory Power Supply — regulated AC and DC steps from 1 to 15 V, up to 10 A, with 4 mm connections.
- 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.
- Joule's Calorimeter — 5 x 7.5 cm copper calorimeter in a wooden outer vessel, with two terminals to a heating coil.
- Aluminum Calorimeter — aluminium vessel with an insulated handle for specific and latent heat work.
Browse the full Physics Lab range, the Heat range for calorimeters and conductivity apparatus, or all physics lab equipment.
Last updated: 22 October 2026
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