Hot-wire Sentence Examples

The thermal G G detectors are especially useful for the purpose of quantitative measurements, because they indicate the true effective or square root of mean square value of the current or train of oscillations passing through the hot wire.

The capacity of the condenser is then altered until the maximum current, as indicated by a hot wire ammeter, is produced in the circuit.

Hot-wire ammeters are, however, liable to a shift of zero, and means are always provided by some adjusting screw for slightly altering the sag of the wire and so adjusting the index needle to the zero of the scale.

From this it follows that hot-wire ammeters are generally not capable of giving visible indications below a certain minimum current for each instrument.

Hot-wire instruments working on the sag principle can be used in any position if properly constructed, and are very portable.

In constructing a hot-wire instrument for the measurement of high frequency currents it is necessary to make the working wire of a number of fine wires placed in parallel and slightly separated from one another, and to rpass the whole of the current to be measured through this strand.

In certain forms, hot-wire instruments are well adapted for the measurement of very small alternating currents.

Numerous forms of hot-wire or thermal voltmeter have been devised.

In the Hartmann and Braun form of hot-wire voltmeter, the fine wire is fixed between two supports, and the expansion produced when a current is passed through it causes the wire to sag down, the sag being multiplied by a gear and made to move an indicating needle over a scale.

Consider, for instance, a hot-wire instrument, such as a Cardew's voltmeter.

More rapid changes in wind speed may be measured using a ` hot wire anemometer ' .

Using highly sensitive digital hot-wire anemometers and digital data-logging barometers this was also ruled out for many of the anomalous door events.

Mean velocity measurements were taken by using a precision constant temperature linearized hot-wire anemometer designed for low speed water flows.