Joulemeter, Low Voltage
Product Code : LSK-PL-10282
Joulemeter, Low Voltage (SKU LSK-PL-10282) measures the electrical energy, from 1 mJ to 9999 J, or the power, from 1 mW to 200 W, delivered in low-voltage AC or DC circuits. Students use it in heat and electricity practicals such as specific heat capacity. Science Lab Supplies, a manufacturer based at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, produces the meter and supplies it directly to schools, colleges, tender contractors and distributors.
Specifications
A switch selects the mJ/mW or J/W range, and the auto-ranging four-digit display then reads energy or power directly. All connections use 4 mm sockets. The J/W range accepts load currents up to 10 A and powers up to 200 W, while the mJ/mW range is limited to 10 mA.
| Parameter | Value |
|---|---|
| SKU | LSK-PL-10282 |
| Energy range | 1 mJ to 9999 J |
| Power range | 1 mW to 200 W |
| Ranges | mJ/mW and J/W, switch-selected |
| Display | Auto-ranging, four digits |
| Maximum load current | 10 A (J/W); 10 mA (mJ/mW) |
| Supply voltage | 20 V DC, 14 V AC (rms) |
| Input resistance (no load) | 2 MΩ |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Low Voltage Joulemeter
The joulemeter replaces the voltmeter, ammeter and stopwatch combination in electrical heating experiments, reading the energy supplied to a heater directly in joules. That makes it useful for specific heat capacity, latent heat and power measurements in school physics and college heat and thermodynamics labs.
- Specific heat capacity of a metal block or water.
- Specific latent heat of fusion or vaporisation.
- Class 10 electricity: electrical energy and power.
- Energy used by small, low-current loads on the mJ/mW range.
Standard Scope of Supply
This low-voltage joulemeter is supplied as a single meter as described above, with its range switch, four-digit display and 4 mm connection sockets. A low-voltage supply, immersion heater, calorimeter block and leads are separate items that can be listed on the same quotation.
Packing, MOQ and Lead Time
Send the number of meters you need, one for a demonstration or a class set, and the quotation will show the packing, delivery time and price for that quantity. Heaters, heating blocks and supplies can be added so the heat and thermodynamics lab equipment arrives together.
Science Lab Supplies has an Importer-Exporter Code and, as a registered exporter, can ship to buyers in Oman, the Philippines, Nepal, Bangladesh, Zambia and Rwanda. For questions, write via the contact page; to price several items, use the enquiry cart; for tender supply, see the lab tender page.
Frequently Asked Questions
What is the difference between the two ranges?
The J/W range reads up to 9999 J or 200 W with load currents up to 10 A. The mJ/mW range reads up to 9999 mJ for small loads, with current limited to 10 mA.
Can it be used on AC as well as DC?
Yes. It measures energy or power in AC and DC circuits. The stated supply voltage is 20 V DC or 14 V AC (rms), so it is intended for low-voltage circuits only.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. The meter is produced at its works in Saha, Ambala, India, and you receive the quotation directly from the maker without an intermediary.
Can a class set be quoted for a tender?
Yes. Share the quantity, delivery location and specification, and the meters will be quoted item by item with any heaters or blocks in the same tender.
Related Heat and Energy Equipment
An electrical-heating experiment needs a heater, something to heat, a low-voltage supply and a meter. These four items complete that setup around the joulemeter, or offer a student alternative, and they can all go on one quotation for a heat laboratory.
- Student Digital Joulemeter — reads 1 J to 999,999 J with a built-in timer.
- Immersion Heater — 50 W, 12 V heater for calorimeter blocks.
- Calorimeter Heating Block — 1 kg block with heater and thermometer holes.
- Multitap Transformer — 0–12 V AC supply, 6 A continuous.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
