DATAQ Instruments Application Notes and News

Extracting Volume from Flow Using Counters

Data Acquisition > Starter Kits > DI-149 Counters are used in a wide variety of data acquisition applications, from measuring radiation exposure to counting the number parts coming off of an assembly line. A particularly useful counter function is extracting volume from flow. This information is critical in a host of industries. In the aerospace Read More

Single-ended vs. Differential: Confusion Reigns

Data Acquisition > Products There is a persistent quandary out there concerning the difference between single-ended and differential analog input configurations. Specifically, many have the impression that analog inputs configured to be  single-ended cannot measure negative-going voltages inputs. I’m not sure where or how this rumor got started, but it’s pervasive and has led many Read More

Be Mindful of Polarity When Making Thermocouple Measurements

Data Acquisition > Thermocouple A little vigilance will save you a lot of time and aggravation when making thermocouple measurements. A common mistakes people make when using thermocouples to acquire temperature data is to assume that the red wire is positive. I know what you’re thinking, “Isn’t it?” Nope. Contrary to popular belief (and what Read More

What’s All This Sink and Source Current Stuff?

Data Acquisition > Current Anyone who has connected to the digital outputs of data acquisition or data logger systems (for example the digital outputs of our DI-149 and DI-155 Starter Kits)  has wrestled with  sink and source current specs, and they continue to be a topic of confusion for many. When does sink current matter, Read More

Choosing an SD Memory Card

Data Logger > Products  SD memory cards are not created equal.  Because an SD memory card works in your digital camera, doesn’t necessarily mean that it will work with your stand-alone data logger. When used in a digital camera, the rate at which data is written to the SD card isn’t critically important. Sure, if Read More

Event Versus Analog Data Acquisition

Data Acquisition > Event, State, Count Customers always know what problem they need to solve. Often don’t know how to find the best solution, which sometimes leads to cramming square pegs into round holes. A recurring example is the attempt to use an analog data logger to record counts or times of an electromechanical process. Read More

What’s the Difference between Data Loggers and Data Acquisition?

Data Acquisition > Products or Data Logger > Products In two words: Not much. But it was not always so. There was a time not long ago when significant differences existed between these two basic system types. Consider the following typical data logger features versus its data acquisition cousin: Data loggers were battery powered. Data Read More

Use the EL-DataPad to Configure your EL-USB Temperature/Humidity Logger and Review Data

Data Logger > Lascar > EL-USB Series The size of a deck of playing cards, with an LCD touch-screen, the EL-DataPad allows you to configure your EL-USB temperature/humidity data logger and review recorded data, without the need for a PC. Simply plug your EL-USB data logger into the built in USB port and follow through Read More

A Simple Humidity Verification Test

Data Logger > Temperature and Humidity Since we sell many data logger products that can measure temperature and humidity customers often ask us how they can verify accurate humidity measurements. That’s a good question. Verifying temperature is easy, but humidity is an entirely different matter. Fortunately, ordinary salt possesses a valuable characteristic that we can Read More

Synchronized Data Acquisition Options

Data Acquisition > Ethernet > Distributed Synchronous Sometimes you need to acquire data from several different locations that are separated far enough from each other that they cannot be acquired by a single, multichannel system. This defines the need to synchronize readings from two or more data gathering systems. In situations like that, how you Read More