RTD Calibration
R.T.D. Accuracy checks for a resistance temperature detector/device (RTD) is often necessary to validate the accuracy of a new RTD. How They Work There are three basic types of RTDs:…
Thermocouple Calibration
Thermocouples Thermocouples measure temperature and are used quite often in process controls. How They Work When wires of two different thermoelectrically homogeneous materials are joined at one end and placed…
DP Transmitter Dry Leg & Wet Leg Calculations
In any process industry, level measurement is very important for safety and process purpose. The level can be measured by two methods. Direct method Indirect method Here we discuss the…
Open Tank DP Level Transmitter Calculations
Open Tank DP Level Transmitter Calculations for DP Transmitter installed at the exact at HP tapping point and below HP tapping point of the tank.
Valve Actuator Bench Set
Valve actuators provide force to move control valve trim. For precise positioning of a control valve, there must be a calibrated relationship between applied force and valve position. Most pneumatic…
HVAC Questions & Answers
Find the top Heating, ventilation, and air conditioning HVAC Questions & Answers for your interview preparation. HVAC Questions & Answers How Does a Refrigerant Compressor Work? The compressor constricts the…
Why Pressure & Temperature Compensation required for Orifice Flow Meters ?
Flow Measurement Pressure & Temperature Compensation. Orifice Flow Meters Temperature and Pressure Compensation requirement, purpose, advantages and formula
What is a Disc Valve ?
Disc valves (often referred to as eccentric disk valves, or as high-performance butterfly valves) are a variation on the butterfly design intended to improve seat shut-off. The disc’s center is…
Different Types of Flow Elements
Different Types of Flow Elements or Flow Sensors are Pitot tube, Annubar flow element, orifice, venturi, flow nozzle and Differential Pressure Flow Sensors.
Electrical Actuators
Electric motors have long been used to actuate large valves, especially valves operated as on/off (“shutoff”) devices. Advances in motor design and motor control circuitry have brought motor operated valve…
