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How do cable length and cable quality affect analog sensors?
A question came in recently concerning the maximum recommended cable length for analog sensors. If the resistance of the conductor (the cable) gets high enough, the sensor’s signal can be degraded to the point where accuracy suffers, or even to the point where it becomes unusable. …
What is an analog temperature sensor?
Analog Devices analog temperature sensors provide current or voltage output proportional to the absolute temperature with accuracies of up to ±1°C. To better suit your varied design needs, our portfolio of temperature sensors are available in multiple package options.
How does an analog temperature sensor work?
How does temperature sensor work? The basic principle of working of the temperature sensors is the voltage across the diode terminals. If the voltage increases, the temperature also rises, followed by a voltage drop between the transistor terminals of base and emitter in a diode.
How big of a cable do I need for an analog sensor?
Analog Voltage Signals (0…10V, -10…+10V, etc): Generally, we recommend that cable length for analog voltage signals be limited to 50 feet* . Cable lengths longer than 50 feet can (and often are) used provided the factors mentioned above are considered and addressed, but the safe bet is stay under 50 feet.
Why do you need a long cable for a sensor?
It’s also assumed that the cable is not routed near high-energy AC sources, against which even a shielded cable offers little protection. If longer cables lengths are necessary, or if the application is electrically “noisy”, your best bet is to consider sensors with a digital interface.
What kind of temperature sensor do I Need?
FT Series digital infrared temperature sensors are designed to provide wide temperature detecting ranges, high responsiveness, long detecting distances, and easy installation and settings.
Can a thermocouple be used as a temperature sensor?
Thermocouples and other contact-type temperature sensors cannot be used because they are damaged by high temperatures. With typical infrared temperature sensors, accurate measurement is impossible due to the influence of infrared energy emitted from the flames.