Digital Signal Transmission Industrial networks that transmit data using digital signals often are an integral part of a data acquisition or process control solution.
Digital Signal Transmission In contrast to analog transducers that sense continuous variables such as pressure and temperature, many transducers provide an output that is one of two states: high or low, open or closed.
NOISE Noise is unavoidable in PC based data acquisition systems. There is board induced noise which can be measured by shorting an analog input to ground and taking a series of readings and plotting them in a histogram.
RS-232 Wiring and Connector Diagrams RS-232 is widely used for connections between data acquisition devices and computer systems. RS-232 devices are defined as either DTE (usually a computer) or DCE (usually an interface device).
RS-232 , RS-422 , RS-485 Why use RS-232 vs RS-485 and what is the real difference between RS-422 and RS-485? First, lets define each one.
Voltage Dividers In order to measure a signal which varies over a range greater than the input range of an analog or digital input of a measuring device, a voltage divider can drop the voltage of the input signal to the level the analog or digital input can measure.
Troubleshooting Thermocouple Input Devices Testing a thermocouple input measuring device is as simple as connecting a short across the input terminals.
Common Problems with Data Acquisition Devices Traditional printer drivers are very benign; they are only active, and use the printer port when you tell an application to print.
Testing a PC's RS-232 Port There are many factors involved in communicating with an RS-232 device from a PC.
Single-Ended vs Differential Inputs One of the most common questions asked is the difference between single-ended and differential inputs, and what applications they should be considered in.
Low Pass Filters - Reduce Electrical Noise on an Analog Input Signal. A low pass filter is placed on the signal wires between a signal and an A/D board
Measuring a 4-20ma Input With a Voltage Input Device It is extremely simple and inexpensive to measure 4-20ma with a device that will measure only Voltage.
Contact Closure Inputs Many times it is necessary to monitor a contact closure using a PC. Some applications include monitoring a relay closure on a machine to record on-off times, or simply as an alarm to notify someone of an open freezer door.
Scaling It is very often necessary to convert a voltage, millivot or current reading into a more useful value such as PSI, GPM, LBS, etc.
Sources of Noise Noise is unavoidable in PC based data acquisition systems. There is board induced noise which can be measured by shorting an analog input to ground and taking a series of readings and plotting them in a histogram.
Overview of GPIB protocol IEEE-488 refers to the Institute of Electrical and Electronics Engineers (IEEE) Standard number 488 and is commonly called GPIB (General Purpose Interface Bus).
Plug-in Cards Although the microprocessor and digital network technologies have fundamentally reinvented the ways in which today's data acquisition systems handle data
The RS-232 protocol Information being transferred between data processing equipment and peripherals is in the form of digital data which is transmitted in either a serial or parallel mode.
Strain Gage Technical Data The most universal measuring device for the electrical measurement of mechanical quantities is the strain gage.
RS485, RS422 and RS232 Why use RS232 vs RS485 and what is the real difference between RS422 Vs RS485? First, lets define each one. Keep in mind that all three are considered SERIAL, as opposed to IEEE-488 which is PARALLEL.
Wireless Signals & Faraday Cages in Temperature Measurement Whether you want roses in January or fresh salmon in August, a temperature-controlled supply chain...
Cellular Monitoring: Process Monitoring with Cellular Technology Cellular monitoring is ideal for applications and data logging where updated information is not required in real time.
Reactive Maintenance vs. Proactive Maintenance: You’re Paying 2-5X More for Maintenance Proactive maintenance, reactive maintenance, and the many benefits of switching to proactive maintenance.
Preventive or predictive: what is the right type of maintenance for your process? Predictive maintenance differs from preventive as it allows you to repair or replace equipment before it runs-to-failure
Industry 4.0 — The Next Industrial Revolution Imagine a manufacturing facility where everything goes as planned.
Get Started with Predictive Maintenance Examine how to maximize the ROI of your equipment, along with the other advantages of implementing a maintenance plan.
5 Reasons to Wirelessly Measure Relative Humidity Monitoring Relative Humidity in Lab can be challenging. Choose the most simple and powerful way by using wireless transmitters.
Shaping the Future of Rotational Molding with Wireless Temperature Monitoring Wireless sensor system successfully improves process control for roto-molding machine manufacturer.
Monitor and Protect High-Value Assets During Storage and Transport High-value assets such as aerospace systems must be monitored and protected while in transit to the final assembly location...
Wireless Monitoring Solution Keeps Fruit Quality High and Energy Costs Low Discover how a wireless temperature monitoring system can provide a more precise and cost-effective way to cool produce.
Differentiating State, Event and Pulse Data Loggers and Defining Applications Data loggers are instruments that monitor and record changes in conditions over time.
Cardinal Glass Reduces Risk of High-Value Asset Loss with Omega’s New Data Logging Software Cardinal Glass needed a way to interface their humidity control sensors to their human machine interface (HMI).
Server Room Remote Environmental Monitoring Monitoring temperature and relative humidity conditions in a server room is essential to maintaining the operating efficiency of this critical infrastructure.
5 Ways IIoT Sensors Can Add Value to Your Process Here's 5 Ways IIoT Sensors Can Add Value to Your Process
Temperature Monitoring During Transportation, Storage and Processing of Perishable Products This White Paper provides some background to temperature and humidity logging in logistics and discusses equipment options.
Wireless Sensors Wireless sensors are standard measurement tools equipped with transmitters to convert signals from process control instruments into a radio transmission.
Data Acquisition In the simplest form, a technician logging the temperature of an oven on a piece of paper is performing data acquisition.
Chart Recorders A chart recorder is an instrument used to record various process and electrical signals.
Anemometer An anemometer is an instrument used to measure the speed or velocity of gases either in a contained flow, such as airflow in a duct, or in unconfined flows, such as atmospheric wind.
Accelerometers An accelerometer is a device that measures the vibration, or acceleration of motion of a structure.
Rotameters The rotameter is an industrial flow meter used to measure the flowrate of liquids and gases. The rotameter consists of a tube and float.
Data Loggers Technically speaking, a data logger is any device that can be used to store data.