Special Purpose Diodes Interview Questions & Answers
1. Explain what is a zener diode? Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. 2. Explain what is…
Convert 4-20ma current output to foundation fieldbus
Here we are discussing about how to convert smart transmitter HART type output current 4-20ma into foundation fieldbus signal. The block diagram for connecting smart transmitter to FF device. Terminal…
Boiler Drum Level Transmitter Calibration
Steam Drum Level is both a critical and difficult measurement to make. Control of the water level in the drum must be precise. A water level that is too high…
DP Flow Transmitter Re-Ranging Calculation
DP Flow Transmitter Re-Ranging Calculation is used to find the DP Flow transmitter revised flow with Existing DP, Existing Flow & New DP.
Instrumentation Symbols Legend
Piping and Instrumentation Diagrams (P&IDs) use specific symbols to show the connectivity of equipment, sensors, and valves in a control system. These symbols can represent actuators, sensors, and controllers and…
Calculate Process Temperature using a Thermocouple
Suppose you walk up to this thermocouple, installed to measure the temperature of an enclosed process vessel, and connect a sensitive voltmeter to the terminals at the junction head: Determine…
Calculate the Thermocouple’s Measurement Junction Temperature
Type K thermocouple A type K thermocouple is inserted into a process, with a digital multimeter connected to its terminals. The ambient temperature at the DMM’s test lead connections is…
Calculate the Voltage across Voltmeters of Thermocouple
Suppose three different voltmeters are connected to a thermocouple, with each voltmeter having a different ambient temperature: Calculate the amount of voltage registered by each of the three voltmeters, as…
Type E thermocouple Calculations
Type E thermocouple Calculate the amount of voltage “seen” by the voltmeter given the following measurement and reference junction temperatures: T1 = 233 oC ; T2 = 31 oC ;…
Thermocouple Measurement and Reference Junction Temperatures
Thermocouple Measurement and Reference Junction Temperatures Calculate the amount of voltage “seen” by the voltmeter given the following measurement and reference junction temperatures: T1 = 589 oF ; T2 =…
