ACI RTDs
Manufactured by Automation Components, Inc. (ACI), RTDs function with superb accuracy and reliability. They do the one thing we ask of them—measure temperature. For all but a few engineering applications, the measurement of temperature with an RTD can be trusted as the most accurate solution within a range of possibilities. ACI’s construction of RTDs emphasizes not only the accurate reading of temperature but also the ability to do so in a wide range of environments for a long time without failure or significant drift.
This is an environmentally friendly product that is uncomplicated enough to allow for quick and easy installation by most professionals who encounter it in the field. Yet, despite its apparent simplicity, it is a highly sophisticated sensor that makes use of a precision resistance temperature detector element. ACI RTDs can be trusted to perform well and last long in virtually any environment. From reading the temperature of an outdoor refrigeration unit to doing the same for equipment found in an industrial setting, there is an RTD from ACI that can accommodate your need.
FAQs
What are ACI RTDs used for?
ACI RTDs are used for precise temperature measurement in industrial processes, building automation, HVAC controls, and energy management systems.
How accurate are ACI RTD temperature sensors?
ACI RTDs offer high-accuracy temperature readings due to stable platinum resistance elements, tight tolerance options, and robust calibration standards.
What types of ACI RTDs are available?
ACI manufactures duct, immersion, strap-on, outside air, averaging, and industrial-grade RTDs designed for multiple installation environments.
Are ACI RTDs compatible with BACnet, Modbus, or building automation controllers?
Yes, ACI RTDs integrate seamlessly with most BAS platforms and major control systems through standard 2-wire or 3-wire RTD configurations.
How do ACI RTDs compare to thermistors or thermocouples?
ACI RTDs provide superior long-term accuracy, stability, and linear temperature response, making them ideal for critical control and monitoring applications.
What is an RTD?
What is an RTD?
RTD stands for Resistance Temperature Detector. RTDs use a specific type of metal that, depending on the resistance measured in the metal, can measure temperature. Thin film element RTDs use a very thin layer of resistive metal adhered to a substrate, typically ceramic, and coated in glass or epoxy. Wire wound element RTDs provide greater accuracy and a wider temperature measurement range, however, over time the element wire can become stressed leading to slight measurement errors. Coiled element RTDs are the most common type of RTD and allow for strain free measurement on the wire element while still providing accurate measurement.
How do RTD elements work?
As the temperature of a metal increases, the metal's resistance to the flow of electricity increases. As the temperature of the RTD resistive element increases, the electrical resistance, measured in ohms, also increases. Each metal has a certain resistance measurement at different temperatures. Based on the resistance that is measured in a given type of metal, it can be determined what the temperature is. The most common types of metals used in RTDs are platinum, nickel and copper.
What are some advantages and disadvantages of RTDs?
RTDs provide a high level of accuracy over a wide operating range. Because of their accuracy, they are often used in situations where temperature measurement is critical. RTDs are rarely used at temperatures above 660 degrees Celsius and they do not provide the same level of accuracy or resolution as thermistors at lower temperatures.