What are modulating controls used for?

A modulating control valve is an automated valve that is used to control the amount of flow in a system or process. They go beyond simple shutoff or isolation (on/off) and actually allow precise control of the flow rate.

What does modulating furnace mean?

Unlike single-stage gas furnaces that operate ‘all ON’ or ‘all OFF,’ a modulating, variable-speed gas furnace is designed to minimize energy use by running at its low fan speed setting to meet the temperature you selected at the thermostat or control system.

What is a modulating control?

A modulating control valve precisely controls the process parameters like pressure, temperature, level, flow rate, etc. and adjusts the input/output positions to receive the optimal result.

What do you need to know about modulating control?

Modulating control requires a proportional control signal from room temperature control or BMS, and a precise control valve with proportional actuator. Proportional control signals are usually in the range of voltage 0-10V, 2-10V or current 0-20mA, 4-20mA (all can be reversed).

How are valve actuators used to modulate control?

The actuators on these valves use feedback and control signals to accurately open and close the valve. There are two distinct types of valves that can be used for modulating control: ” Rising Stem ” and ” Quarter-turn .” Both types operate using the same logic and principles.

Which is the best modulator for temperature control?

TA-Modulator is designed for proportional or 3-point control on all applications requiring tighter temperature control whilst offering energy savings. TA-Modulator also works well on oversized terminal units. In contrast to other valves on the market, TA-Modulator is able to measure both the pressure and the true flow through the valve.

Why is modulating control important in thermal power plant?

Modulating controls are extremely important to run a thermal power plant in the most efficient way with minimum pollution to the environment. Swapan Basu, Ajay Kumar Debnath, in Power Plant Instrumentation and Control Handbook, 2015