Dwyer Instrumentation
For many years, Dwyer Instruments has been known and appreciated as a trusted leader in the measurement and control sectors. The company has made a name for itself by manufacturing innovative instrumentation solutions for the worldwide HVAC and process automation markets. Dwyer is first and foremost an instrument company. When we need to take a measurement, be it flow, pressure, or temperature, we look to Dwyer’s products as the types of devices that serve the basic function of a measurement instrument.
The company’s instrumentation lineup spans air velocity instrumentation, pressure gauges, rugged transmitters designed for tough environments, and a few other types of measuring devices. Dwyer is a unique company in a couple of ways: It covers a breadth of technologies which delivers advanced temperature and process controllers, and proximity controls built for demanding automation tasks. In a world where even the best instruments sometimes need constant "tuning" or recalibrating to be truly reliable, Dwyer has carved out a nice niche for itself by delivering straightforward instruments that give straightforward results.
FAQs
What does Dwyer Instruments make?
Dwyer produces pressure, flow, temperature, level, air velocity, and air quality instrumentation used in industrial, commercial, and HVAC applications.
What are Dwyer’s most popular products?
Their Magnehelic differential pressure gauges, Digihelic controllers, flow meters, air velocity sensors, and Love Controls temperature controllers are among their best-known products.
Does Dwyer Instruments offer digital or smart devices?
Many Dwyer products include digital displays, electronic transmitters, Modbus or BACnet communication, and advanced diagnostics.
How do I choose the right Dwyer instrument for my application?
You match the device to the variable you’re measuring—such as pressure, flow, or air velocity—along with the range, environmental conditions, and mounting requirements.
Where is Dwyer Instruments located?
Dwyer is headquartered in Michigan City, Indiana, and serves customers worldwide through distributors and direct industrial channels.
Analog and Digital Control Signals: The Basics
Digital Signals
Digital signals are represented in either a true or false. There is no gray area with digital signals. An example of this might be a light switch. A light switch is either on or off. Another example of this might be a motor that is running or not running. Digital signals can be generated with both AC and DC circuits with varying voltages, currents and resistance. Some practical examples of using digital signals in an industrial environment might be if a pump is running or not running or a whether a valve is open or closed.
Analog Signals
Analog signals convey information in the form of a range. A light switch might be on or off as a digital signal, but a dimmer switch would be an analog signal. It can be on or off, but it can also be somewhere in between. A practical example of using analog signals in an industrial environment would be if there is a need to measure the level of a tank; whether it's full, empty or somewhere in between. Analog signals can take many different forms with some of the more common being a 4 to 20 milliamp signal or a 0 to 5 or 0 to 10 volt signal.
Communication
Communication in a device can either be sent or received. Whether that data is sent or received depends on the type of information. Is there a need to monitor the status of something? If so, an input needs to be received about that information. Is there a need to control something? If so, an output needs to be sent about what needs to occur. Receiving inputs and setting outputs are both things that can be accomplished by using both digital and analog signal types. Therefore, the signals are referred to as analog outputs (AO), analog inputs (AI), digital inputs (DI) or digital outputs (DO).