Tag Archives: isolation

Why You Need Channel-to-channel Isolation

Data Acquisition > Voltage > DI-245 Editor’s update: All information in this application note applies equally to model DI-808 data logger with a built-in Web server, and model DI-2008 Thermocouple, Voltage and Pulse Data Acquisition System. It’s difficult to temper excitement about DATAQ Instruments’ model DI-245 data acquisition system. Beyond thermocouple-based measurements and a superb voltage measurement Read More

DI-730 Tackles Tough Industrial Measurements

Data Acquisition > Voltage > DI-730 Imagine this measurement environment: Simultaneous measurements of 400+ source volts and 50 millivolt current shunts that are hundreds of volts off-ground. Now imagine trying to make this measurement against the background noise of SCRs chopping the motor supply at a 10 kHz rate. Traditional PC-based instrumentation vaporizes in this Read More

Learn the Importance of Isolation In Four Easy Lessons

Data Acquisition > Voltage The concept of isolation when applied to instrumentation can be difficult to grasp for many who do not have formal instrumentation training or experience. Yet, an understanding of what it is, why it’s important, and when you need it, is fundamental for safe and productive measurements in so many measurement applications. This Read More

DI-730 Data Acquisition System Aids Moon Roof Design and Qualification

Data Acquisition > Voltage > DI-730 It was a good, long run, but the strip chart recorder our customer had used for years was finally being replaced with a state-of-the-art PC-based data acquisition system. The recorder had become unreliable, and the paper records were tedious to analyze, and difficult to archive. The only problem was Read More

Variable Speed Drive Measurements using the DI-730 Data Acquisition System

Data Acquisition > Voltage > DI-730 Motors using variable speed drives are found at virtually all levels of production, from mining raw materials and processing them into finished goods, to transporting those to market. Examples include open pit mining machines, steel and steel rolling mills, aluminum rolling mills, paper mills, heavy duty cranes, heavy duty Read More

How to Make Safe and Accurate Thermocouple Measurements Using Isolated Instrumentation

Data Acquisition > Thermocouple > DI-1000TC Thermocouples are the most widely used devices for temperature measurements. They are: Rugged; Inexpensive; Simply constructed (welded wires composed of dissimilar metals); Used to measure temperature ranges spanning thousands of degrees; Fast in their response to changes in temperature. But these attractive characteristics do not come without a price. Read More