Why Negative Readings in Gas Detectors ?
Why Negative Readings in Gas Detectors ? This is a common question that is frequently asked. As recently as today in fact. So, why do you sometimes see negative readings
How to do 4-20mA Conversions Easily
Generally it is possible to generate a “custom” linear equation in the form of y = mx + b for any linear responding instrument relating input directly to output, a more general
Example of 3-15 psi to 4-20mA Conversion
A current-to-pressure transducer is used to convert a 4-20 mA electronic signal into a 3-15 PSI pneumatic signal. This particular transducer is configured for reverse action instead of direct, meaning
Surface Grinding Process using PLC Program
Implement PLC ladder logic for automatic surface grinding process. Grinding process is an example PLC Program using RSLOGIX 500 software. PLC based Grinding Process Step Conditions: Start PB is to
Drilling Process using PLC Program
Drilling process is one the example Program in PLC using RSLOGIX 500. PLC Drilling Machine Step Conditions: Start PB is to start the process. At initial, Job in sensor, Drill
Instrumentation Earthing
Earthing is the process of creating an alternative path for the flow of fault/excessive currents safely into the ground in the presence of minimal resistance or impedance. The primary purpose
Different Types of Thermometers
Thermometers can be classified according to the nature of substance which expands. Expansion of solids (a). Bimetallic thermometers Expansion of liquids (a) Liquid in glass thermometers (b)
Questions on Thermocouple and Pyrometer
Study the Temperature Sensors Questions and Answers for your interview preparation. This article focus on Thermocouple and Pyrometer Questions. Thermocouple and Pyrometer 1. Define Seebeck effect? When a pair of
Disadvantages of Resistance Temperature Detectors
Resistance Temperature Detectors (RTDs), are sensors used to measure temperature. Many RTD elements consist of a length of fine wire wrapped around a ceramic or glass core but other constructions
PLC Practice Questions
Explain what the following PLC Practice Questions on “ladder-logic” circuit does, and identify the meaning of each symbol in the diagram: PLC Practice Questions Explain why the TSH uses a normally-open contact