What is BS EN 61514 - Valve positioners with pneumatic outputs about?
BS EN 61514 is a European standard that specifies tests designed to determine the static and dynamic performance of single-acting or double-acting analogue positioners. The tests may be applied to positioners, which receive standard analogue input signals (as specified in IEC 60381 and IEC 60382) and have a pneumatic output.
BS EN 61514 is intended to provide definitions of positioner elements, actions, and characteristics, to specify uniform methods of measuring performance errors and effects of influence quantities on those characteristics, and to describe methods of reporting and evaluating the results of the measurement data obtained. The test conditions described in BS EN 61514 (for example range of ambient temperatures and power supply) relate to conditions that commonly arise in use.
Note: Positioners with pulsed or digital input signals, positioners with digital controllers and positioners with pulsed outputs are outside the scope of BS EN 61514.
Who is BS EN 61514 - Valve positioners with pneumatic outputs for?
BS EN 61514 on valve positioners with pneumatic outputs is useful for:
- Product manufacturers
- Product users
- Independent testing establishment
- Quality control personnel
- Pneumatic equipment manufacturers
Why should you use BS EN 61514 - Valve positioners with pneumatic outputs?
A control valve positioner adjusts the position of a valve based on the desired set point for a process variable, such as pressure, temperature, or flow. Pneumatic positioners are pneumatic signal receivers. The valve actuator is then supplied with the necessary air pressure by the positioner, allowing the valve to be moved to the desired position. Pneumatic positioners are intrinsically safe and can close a valve with a large amount of force.
BS EN 61514 provides manufacturers with guidelines for testing procedures, precautions, and basic test arrangements for the performance of the positioner. Using BS EN 61514 guidelines help with high quality, durability, quality management and long service life for its users.
