Thermistor

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Make your selection wisely as there are two basic types of thermistors...

PTC (positive temp coefficient) and NTC (negative temp coefficient).

We need NTC. Can you recommend best suitable for this machine?

Thanks

Antonio

Yes, Well, I will try!

They come in different packaging (construction), some are epoxy or glass enclosed and some are cylindrical metal cased. They vary in size like the size of a tiny earrin and I have seen them the size of a can transistor. Never worked with one larger than that. The ratings are in ohms and temp range and mounting configuration. Soe are installed in-line when dealing with fluids and some are mounted close t the source they are to control (monitor). Jameco Industries sells them and I think I had bought from OMEGA engineering in the past. Sorry I cannot recommend a particular NTC but try google and add keywords like NTC thermistor...

Hope to have been of help to you!

I will continue to research and help you with this..

NTC Thermistors

Ametherm's NTC Thermistors are available in a variety of sizes, shapes and packages.
Get the one that fits your application.

NTC Disc Thermistors

Surface Mount Thermistors

NTC Thermistor Probes

Our Disc NTC Thermistors are radial leaded with Lead Free tinned copper wire.
more info>>

Our Surface Mount NTC Thermistors are specially designed to react quickly to fluctuations in temperature.

more info>>

Our NTC Thermistor Probes are designed for durable performance in various environments.

more info>>

NTC Thermistor Applications

What is an NTC Thermistor?

Thermistors are temperature-sensing elements made of semiconductor material that has been sintered in order to display large changes in resistance in proportion to small changes in temperature. This resistance can be measured by using a small and measured direct current, or dc, passed through the thermistor in order to measure the voltage drop produced. Thermistors are an incredibly accurate category of temperature sensors. In general, thermistors are composed of sintered ceramics consisting of highly sensitive material with consistently reproducible properties of resistance versus temperature. more info>>

Calculating Beta

Predict the resistance of an NTC Thermistor at a given temperature

Steinhart & Hart Equation

Predict the resistance of an NTC Thermistor at a given temperature - Most accurate method

Calculating the Temperature Coefficient

NTC Thermistors are a good alternative to semiconductor circuitry for temperature related problems.

Accurate Temperature Measurements

Guidelines for achieving the most accurate measurements using an NTC Thermistor

Temperature Measurement

One of the easiest ways to measure temperature with an NTC Thermistor is to use a Wheatstone bridge.

Power Dissipation for Temperature Detection Circuits

Account for power dissipation in an NTC Thermistor temperature detection circuit.

Temperature Compensation Circuits

An NTC Thermistor is a common method of compensating for temperature changes in coils and solenoids.