Abstract: Experimental data was collected to examine the behavior of RTD probes in various thermal buffers in refrigerator and freezer applications. From the warm-up time vs. temperature curves, a thermal time constant was determined by fitting an exponential line to the data. Also, the behavior of the buffers during typical operation as the refrigeration compressor cycled on and off was observed. Using this data, recommendations on buffers for refrigerators and freezers are made.
At CAS DataLoggers we often receive calls from users working in resistance measurement applications, for example using string pots to measure movement, measuring thermistors/RTDs for temperature, measuring the resistance on test samples, and many more applications. In this white paper, we’ll cover a few simple ways you can reduce error and improve accuracy at the low, mid- and high resistance ranges.
The Internet of Things (IoT) is a popular phrase for the increasing development and market saturation of Internet-capable physical objects such as appliances and control systems. CAS DataLoggers covers several industry opportunities presented by today’s wireless dataloggers including models with new mobile apps which let users remotely monitor temperature and control processes from anywhere.
What is a datalogger? These products are widely-used measurement and data storage tools that monitor your product or process 24/7. Using a data logger you can keep an eye on temperature, humidity, current/voltage or just about any kind of data. In this article the Application Specialists at CAS DataLoggers walk you through the basics of data loggers and what they can do for your business or organization.
Technicians and engineers often use thermistors to log temperature in applications which require increased accuracy for more demanding projects. To accomplish this, they use the Steinhart–Hart equation to get much more precise readings across the sensors’ temperature ranges. Users most commonly work with it in applications measuring water or machine temperatures. As part of our free tech support, we at CAS Data Loggers often provide help in this area for customers.
While grounding can prevent and resolve many power issues, it can also create serious issues of its own. One of the most common problems is known as ground loop feedback--often resulting when different electrical circuits are powering a system and its peripherals. This can also be a seasonal issue as hot dry temperatures can create signal noise for equipment end users, so the Application Specialists at CAS DataLoggers have put together this brief introduction to help reduce o...
Recent local, state and federal mandates such as RICE NESHAP require the reduction of harmful emissions (both particulate and NOx) from diesel engines used in off-road equipment, generators and more. After the emissions reduction equipment has been installed, it’s also necessary to monitor engine performance. Authored by CAS DataLoggers, this paper will review the datalogging requirements for this application, the sensors required, and sensor mounting considerations.
Capturing and simulating the high-speed rotations involved in automated machines and test rigs often plays a major role in industrial automotive applications. Common requirements are accurate speed measurement over a large range of operation, detection of speed changes, capturing jitter, jitter simulation, and angle-based data acquisition. The Applications Specialists at CAS DataLoggers have put together this article to present some practical approaches to accomplish these ta...
Turning Point Analysis is a method of data compression for arbitrary waveforms. The incoming waveform is sampled at speed and analyzed in real time to identify the turning points (Maxima and Minima) of the waveform, and the value and time of the turning point are also logged to memory for later recovery. Using series 3 dataTaker dataloggers, the Applications Specialists at CAS DataLoggers have assembled this tutorial to examine this subject, including a simple method of nois...
Attenuation is a reduction of signal strength during transmission, such as when sending data collected through automated monitoring. Attenuation is represented in decibels (dB), which is ten times the logarithm of the signal power at a particular input divided by the signal power at an output of a specified medium. For example, an office wall (the specific medium) that changes the propagation of an RF signal from a power level of 10 milliwatts (the input) to 5 milliwatts (the...
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