Joule & Watt Meter

Capable of making direct measurement of electrical energy or power supplied to a load and is therefore a valuable tool for pupil-based work as well as simplifying many demonstrations (IPC-1952-M). The direct readings mean that the need for voltmeter, ammeter, stop watches and calculators is eliminated and fast and accurate results can be obtained. The science understanding can therefore be gained from scientific investigations rather than mathematical manipulation, making it ideal for pupil-based investigations at GCSE, Standard Grade level and A-level in science and technology courses.

Its many uses include experiments with an electrical heater, determination of energy stored in a capacitor, calculating the power supplied by a DC source to a resistive load and measurement of the specific latent heat of steam.

The meter has been designed to measuring energies from 0.01mJ to 9999J in AC or DC and displayed via an auto-ranging four digit LED display. Power measurement ranges from 0.1mW to 200W for DC circuits and 0.1mW to 140W in AC circuits.

Two range settings are available, via a toggle switch, the lower range being mJ/mW (max. current 10mA) and the higher range being J/W (max. current 10A). All electrical connections are via 4mm sockets.

Description : Joule & Watt Meter

Description:                 Joule & Watt Meter.

Part Number:               IPC-1952-M

Electrical Supply:         220-240VAC, 50-60Hz

Dimensions:                 180 x 190 x 85mm overall.

Mass:                           1.6kg

Max. input voltages:    20VDC, 14VAC (rms).

Input resistance:          2MΩ (No load).

Max. load currents:     J/W range = 10A, mJ/mW range = 10mA

Max. energies:            mJ range = 0.01mJ to 9999mJ, J range = 0.01J to 9999J (both auto-ranging).

Max. powers:               mW range = 0.1mW to 200mW, W range = 0.1W to 200W

Accuracy:                   Typically ±5% of full-scale reading.