1/25/2024 0 Comments Minco product company![]() ![]() This section of the Sensors and Instruments Solutions Guide will provide you with a basic understanding of Minco’s sensing and instrumentation technology. Several potential sensing technologies may meet the essential environmental and performance specifications of your application. Determine which sensing technology options meet your requirements sensing accuracy at a calibration point and/or over a temperature spanĢ.Is there high electromagnetic interference potential from power switching, rectification, or radio waves?įinally, define the significance of these performance specifications in your application:.Is the medium chemically reactive (corrosive) or hazardous (explosive)?.What is the sensed medium (a surface or immersed in solid, liquid or gas)?.Define the typical and extremes of these environmental conditions: The factors listed below can help you define the sensing requirements for your application. Many factors should be a part of the sensor system design process. Understand and define your application requirements Your Sensors & Instruments Solutions Guide How to Get Startedġ. Point sensing: A thermistor bead can be made the size of a pin head for small area sensing.High sensitivity: A thermistor may change resistance by tens of ohms per degree temperature change, versus a fraction of an ohm for RTDs.However, models with tighter interchangeability or extended temperature ranges often cost more than RTDs. Low sensor cost: Basic thermistors are quite inexpensive.There are wide variations of performance and price between thermistors from different sources. Some manufacturers offer thermistors with positive coefficients. Sensitivity is many times that of RTDs but useful temperature range is limited. Resistance drops dramatically and non-linearly with temperature. A typical thermistor shows a large negative temperature coefficient. ThermistorsĪ thermistor is a resistive device composed of metal oxides formed into a bead and encapsulated in epoxy or glass. Note, however, that many Minco RTDs have time constraints faster than equivalent thermocouples. ![]()
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