S-Range Digital Joulemeter
Product Code : EL-E-11075
Quick Answer: The S-Range Digital Joulemeter is an electronic joule and wattmeter for a.c. or d.c. inputs, used to measure the energy supplied to electric heaters in calorimetry and to compare the input and output energies of motors and dynamos.
Last updated: October 2026
Key Features
- Four internal shunts give maximum current ranges of 0.7 mA, 7 mA, 0.7 A and 7 A a.c.
- Maximum input of 15 V a.c.; maximum input power can be doubled on d.c.
- Each current range has three joule ranges, selected by a slide switch
- Meter output sockets for display of watts
- Input frequency: d.c. or 50 to 1000 Hz a.c.
- Input resistance of 1M Ohm
Technical Specifications
| Specification | Value |
|---|---|
| Input voltage | 0-15 V a.c. |
| Current ranges (a.c.) | 0.7 mA, 7 mA, 0.7 A, 7 A |
| Current maxima (d.c.) | 1 mA, 10 mA, 1 A, 10 A |
| Joule ranges | Three per current range, slide switch |
| Input frequency | d.c. or 50 to 1000 Hz a.c. |
| Input resistance | 1M Ohm |
About This Product
Beyond calorimetry and motor or dynamo investigations, the meter can be used at a more advanced level to measure the energy stored in a capacitor. It can show that maximum power is dissipated when source and load resistance are equal, and that no power is dissipated in a purely reactive load. With an oscilloscope, input voltage can be compared with instantaneous power, and average and peak powers and the effect of phase angle variation can be demonstrated.
Frequently Asked Questions
Q1. What other measurements can it support?
It can be used to determine the specific heat capacity of a metal and to measure the enthalpy changes of reactions taking place in a solution.
Q2. How do the d.c. ranges differ from a.c.?
On d.c. the maximum input power can be doubled, with current maxima of 1 mA, 10 mA, 1 A and 10 A instead of 0.7 mA, 7 mA, 0.7 A and 7 A.
Related: Energy, SEP Energymeter, Joule Gun.
For a quotation on the S-Range Digital Joulemeter, contact School Equipments India.
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