BSI Standards PublicationIndustrial-process measurement and control — Data structures and elements in process equipment catalogues Part 21: List of Properties LOP of automated valves fo
Characterization scheme
IEC 61987-1 outlines a classification system for industrial process measuring equipment according to the variables being measured To incorporate the List of Properties (LOPs) from any technology sector into the IEC Common Data Dictionary (CDD), it is essential to develop a characterization scheme for the device types within that technology area.
The area of technology considered in this standard concerns final control elements The characterisation of the area for the CDD is provided in Table A.1
The area of final control elements belongs to the domain of “Process Automation” in the CDD This area consists of two sub-areas for:
– control valves and automated on/off-valves, and
The sub-area for control valves and automated on/off valves includes a detailed structure, as illustrated in Figure 1, while the process regulators section only lists device types Typically, the term "valve" refers to a complete assembly, which includes the valve body, actuator, and additional components like positioners and feedback units Consequently, the next sub-level categorizes the different types of valves based on their valve body assembly.
“actuator” in Figure 1 also has the substructure shown in Figure 2
Figure 1 – Characterization of final control elements on the basis of IEC 60534-1
OLOP and DLOP
An Operating List of Properties (OLOP) outlines key aspects of a device type, including its operational environment, design requirements, and relevant boundary conditions for its point of operation.
“aspect” is described in IEC 61987-11 Among a range of possible aspects, the operating aspect represented by the OLOP is the most important
The Device List of Properties (DLOP) serves to define specific device types, such as globe control valves, pneumatic linear actuators, and positioners It details the mechanical and electrical construction, as well as the performance characteristics of each device Each DLOP is tailored to describe a unique device type comprehensively.
Two OLOPs are available for automated valves: one for valve body assemblies and process regulators, and another for actuators This distinction is essential due to the varying specifications required for each component.
Figure 3 shows the relationship between the OLOP and DLOPs for valve body assemblies
The OLOP is applicable to both the generic DLOP and the specific DLOPs for various device types, such as globe valves and gate valves, which have distinct valve body assemblies.
Figure 3 – Assignment of OLOP and DLOPs for valve body assembly
Figure 4 shows the relationship between the OLOP for actuators and the actuator DLOPs The
OLOP is applicable to both generic DLOP and specific DLOPs designed for various device types, including linear electrical actuators and rotary pneumatic actuators, which vary in construction and power source.
Figure 4 – Assignment of OLOP and DLOPs for actuators
At advanced construction levels, OLOPs and DLOPs encompass property blocks that are universally applicable to all process variables or device types This section of IEC 61987 outlines these generic block structures.
Further parts of this standard series specify the block structures and properties of OLOPs and DLOPs for particular construction principles.
Cardinality and polymorphism
The principles of cardinality and polymorphic areas outlined in IEC 61987-10 and IEC 61987-11 offer significant flexibility in describing devices and their environments, particularly when utilizing the block structure in the LOP.
• Cardinality allows a LOP element, for example a property block describing a particular feature of a device, to be repeated as many times as necessary
• Polymorphism allows the introduction of a complete property block from a selection of property blocks at a particular structure level of a LOP
In final control elements, cardinality facilitates the replication of the "End connection" block For instance, a final control element may feature four end connections: two for the controlled medium and two for steam heating, necessitating four end-connection property blocks These connections can include two flanges, one threaded connection, and one welded joint.
5 Operating List of Properties (OLOP)
Generic block structure
An operating list of properties (OLOP) outlines the operational conditions and design parameters for a device, without detailing the device's specific characteristics, which are instead found in the device list of properties (DLOP).
An OLOP functions like an engineering datasheet by gathering essential data about the operational environment of a device This encompasses details on the process medium, ambient conditions, design safety requirements, and plant infrastructure, all of which are thoroughly documented in the OLOP.
The generic block structure of an OLOP for valve body assemblies and process regulators aligns with the structure outlined in Table 1, which is also applicable to measuring equipment as per IEC 61987-11 Detailed descriptions of the individual blocks can be found in sections 5.2 to 5.7 Additionally, the generic block structure for the OLOP of actuators and valve accessories adheres to this general framework.
Table 1 – Generic block structure of an OLOP
Process conditions for final control elements
Process conditions at the inlet [c]
Liquid phase Vapor phase Gas phase Other material properties Process conditions at the outlet [c]
Liquid phase Vapor phase Gas phase Other material properties Calculation results
Operating conditions for device design
Normal environmental design conditions Limiting environmental design conditions Design conditions for external cleaning in place Process design conditions
Normal process design conditions Design conditions for internal cleaning in place Design conditions for valve body assembly
The block can be repeated multiple times through cardinality, indicated by a property named "number of " that directly precedes it, as outlined in IEC 61987-10.
Base conditions
The block base conditions must include the properties of reference variables utilized throughout the document, as these variables establish the reference state or conditions for calculating other variables, such as the normalized flow rate.
For example the conditions of pressure and temperature to be used to calculate density would be entered in the properties “absolute base pressure” and “base temperature”
NOTE Base conditions are often standardized for particular industries or applications.
Process case
General
The block process case shall contain the properties required to characterize the process media at the point of control It comprises at least the sub-blocks:
• Process conditions for final control elements
A process case encompasses the data associated with a specific operating point of the plant, particularly at the site of the final control element It includes essential process medium-related information, such as pressure, temperature, viscosity, and conductivity.
Process conditions for final control elements
The block process conditions for final control elements must include characteristics that define the operating state and the physical properties of process media across various phases This encompasses several key blocks.
• Process conditions at the inlet
• Process conditions at the outlet
• Calculation results of control devices
5.3.2.2 Process conditions at the inlet
The inlet block process conditions must include the characteristics of the common process variables for a stream that consists of one or more phases at the final control element's inlet.
5.3.2.3 Process conditions at the outlet
The outlet block process conditions must reflect the characteristics of the common process variables for a stream that includes one or more phases at the final control element's outlet.
5.3.2.4 Calculation results of control devices
The block calculation results of control devices shall comprise the results of calculations based on the current process case such as flow coefficients or sound pressure levels.
Other process case variable
The block other process case variable contains text properties which allow the user to characterize variables that are not foreseen in the block process case variables
The cardinality property “number of other process case variables” allows the block to be replicated the required number of times to describe all other process case variables.
Operating conditions for device design
General
The block operating conditions for device design shall contain properties describing the nominal conditions to be found at the control point It comprises five sub-blocks:
• Design conditions for valve body assembly
NOTE The corresponding blocks in the DLOP are described in 6.11.
Installation design conditions
The block installation design conditions shall contain properties that describe the installation conditions at the control point It comprises one block:
The block deployment design conditions shall contain properties that describe installation conditions at the control point
Examples are the proposed mounting orientation of the device or the special process conditions given.
Environmental design conditions
The block environmental design conditions shall contain properties that describe the environmental conditions outside the process, under which the final control element will be operated It comprises three blocks:
• Design conditions for external cleaning in place
The block normal environmental design conditions must specify the range of operating conditions for which a device is intended, including factors such as ambient temperature and climate class.
The block defining environmental design conditions must include properties that describe the extreme values affecting the final control element, such as mechanical shock, the maximum and minimum rates of ambient temperature change, and the maximum and minimum storage temperature values, as well as vibration.
The final control element shall be able to withstand these extreme values without permanent impairment of its operating characteristics
5.4.3.4 Design conditions for external cleaning in place
The block design requirements for cleaning in place must include specifications that outline the conditions exceeding standard ambient levels, along with the duration of these conditions during the cleaning process.
Process design conditions
The block process design conditions shall contain properties that describe the process variables for which the device shall be designed to control or withstand It comprises two blocks:
• Design conditions for internal cleaning in place
NOTE 1 The process design and operating design conditions are generally associated with the lines or equipment, and are not related to the process case
NOTE 2 Users can either use the process case or the normal process design conditions to specify the process conditions, but typically not both
The block normal process design conditions must include properties that define the range of process conditions at the control point, ensuring that the final control element operates within its specified performance limits These limits are represented as maximum and minimum values for parameters such as process pressure and temperature.
Process design condition variables are distinct from process operation variables, representing the permissible minimum and maximum values for plant operations It is essential that the final control element functions safely and reliably within these defined conditions.
5.4.4.3 Design conditions for internal cleaning in place
The block design requirements for cleaning in place must include specifications that outline the conditions exceeding standard process design parameters, along with the duration of these conditions during the cleaning of pipes using the device in situ.
Design conditions for valve body assembly
This section outlines the design criteria for valves, including the maximum differential pressure when the valve is closed, permissible leakage rates, allowable sound pressure levels, and travel times.
Pressure-temperature design conditions
The block pressure and temperature design conditions must include properties that define the extreme combinations of process temperature and pressure that may arise during plant operation Additionally, the block should encompass a sub-block for further specifications.
The cardinality property “number of design deratings” determines the number of times the design deratings block is replicated, in order to map a temperature-pressure derating curve
NOTE For pipe specifications the deratings are implicit in the pipe rating; for vessels they can be specified by the use of this block.
Process equipment
General
The block process equipment shall contain properties that describe the process equipment at which the point of control is located The block contains the sub-block:
Line or nozzle
The block line or nozzle shall contain properties that describe the connection end of a piece of a line
The properties of the line or nozzle end connections are collected in separate sub-blocks The end connection block is identical for OLOP and DLOP
The cardinality property “number of end connections” allows multiple connections to be described
Line connection properties differ from valve connection properties, as lines are sized according to specific piping specifications and design criteria that do not consider valve design The size of the valve connection is typically determined only after selecting and sizing the instrument Additionally, valve sizes are often smaller than line sizes and may not be available in all end connection styles and materials that are offered for lines.
Physical location
General
The block's physical location includes properties that define conditions beyond the environmental and process factors present at the instrument's site It consists of several sub-blocks.
The cardinality property “number of physical locations” allows all the locations to be described, where parts of the final control element are to be deployed.
Available power supply
The block available power supply shall contain properties that describe the available power supply It may contain the following sub-blocks:
The cardinality property of "electrical line power supply" enables the description of multiple power sources when various types are available within a plant.
Process criticality classification
The block process criticality classification is essential for ensuring plant safety, focusing on properties that define criticality classification while excluding hazardous area classifications, such as safety integrity levels.
Area classification
The block area classification shall contain properties that describe the equipment’s internal, local and remote area, including the wiring concept
The cardinality property “number of area classifications” allows more locations to be described The property “type of area classification” describes the location
6 Device List of Properties (DLOP)
Basic structure
General
The first level structure of the generic Device List of Properties (DLOP) for final control elements closely follows the structure outlined in IEC 61987-1, reflecting the significant similarities between measuring equipment and final control elements Differences are detailed in section 6.1.3.
Generic block structure
Table 2 shows the generic block structure of the Device List of Properties (DLOP)
Should a device not offer a particular function, for example digital communication, the corresponding block is not filled out or used in the DLOP structure
Each block consists of a standard set of properties, along with additional sub-blocks when necessary These sub-blocks can either be generic for a group of similar devices or specific to a particular device type Additionally, sub-blocks may include other blocks within them.
Subclauses 6.2 to 6.15 describe the blocks in the generic structure as shown in Table 2 In general, the individual properties have not been described unless they are of special interest, as all carry a definition which can be viewed in the Common Data Dictionary
A description of the blocks to be found below the generic level is to be found in subsequent parts of the IEC 61987 series
Table 2 – Generic block structure of a DLOP
Reference conditions for the device
Deployment conditions Start-up conditions Environmental design ratings
Normal environmental conditions Limiting environmental conditions External cleaning in place conditions Process design ratings
Normal process conditions Limiting process conditions Limiting conditions Internal cleaning in place conditions Pressure-temperature design ratings
The block can be repeated multiple times through cardinality, indicated by a property named “number of ” that precedes it, as outlined in IEC 61987-10 Additionally, the block features a polymorphic area, which includes a control property for polymorphism along with a value list and several polymorphic sub-blocks corresponding to the values in that list.
The alternative sub-blocks are located directly beneath the marked block and pertain exclusively to the subsequent structural level For clarity, the table includes only those block levels that are technically relevant, while additional structural elements necessary for forming polymorphic areas, such as those outlined in IEC 61987-22, are not displayed.
Relationship to IEC 61987-1
The generation of DLOPs must consider the structure outlined in IEC 61987-1, with several key amendments: a new block for final control elements, labeled as Parameters of , has been introduced; a separate block titled “Digital communication” has been created to define the properties of a digital communication interface that serves as both input and output; the section previously known as “Operating conditions” has been renamed to “Rated operating conditions” to clarify its distinction from the OLOP's “Operating conditions for device design”; the section on “Mechanical construction” has been updated to “Mechanical and electrical construction” and expanded; finally, “Documentation” has been established as a separate aspect.
The DLOP encompasses additional elements beyond those specified in IEC 61987-1, which are essential for detailing the calibrations and tests performed by the manufacturer, as well as the device components, accessories, and accompanying documentation.
Identification
Block identification must include essential properties for clear equipment identification, such as the manufacturer or supplier, product type, and designation Additional details, like the serial number and version of the supplied equipment, can be included as needed.
Application
The block application shall contain properties describing the designated use of the equipment.
Parameters of <device group>
The block parameters of the include values that are specific to that group, such as the flow coefficient, the maximum allowable force for a globe valve, and the limit stops for an actuator.
Function and system design
General
The block function and system design shall contain properties describing system aspects relevant to the characterization and operation of the equipment.
Dependability
The block dependability shall contain properties describing the dependability of the device in accordance with IEC 61069-5 and IEC 61508-6, where applicable.
Input
General
The block input shall contain information about the means by which an instrument receives its control signal
NOTE This block is normally only needed for positioners and feedback units.
Control input
The block control input shall contain all possible input signal types that may be used by an instrument to acquire its control signal
The block type of control input defines the function and associated process variable, with the correct signal input block chosen through the polymorphism control property labeled “Control input type” within the sub-block “Type of control input” that includes the polymorphic area The designation “ input” in Table 2 represents a variety of input type blocks.
Should the input to be described not be contained within the list of input types, the block
“Manufacturer-specific input” shall be used
NOTE Digital inputs are specified in the Digital communication block
Each block input, for example “analog current input”, shall contain properties describing the electrical specifications of the signal interface
Type of auxiliary input
The block defines properties that identify the function and associated process variable, with the appropriate signal input block chosen through the polymorphism control property “Auxiliary input type” found in the sub-block “Type of auxiliary input” within the polymorphic area The designation “ input” represents a variety of input type blocks.
Should the input to be described not be contained within the list of output types, the block
“Manufacturer-specific input” shall be used
NOTE Digital inputs are specified in the Digital communication block
Each input, such as "analog current input," must include properties that detail the electrical specifications of the signal interface and how the signal is assigned to a process variable.
The “ input” blocks vary in content, with analog signal blocks typically containing different parameters compared to those for binary, frequency, and pulse signals These blocks may include various sub-blocks.
Output
General
The block output shall contain properties describing the signals’ output by the instrument
The number of outputs offered by the instrument is to be entered in the cardinality property
“number of outputs” which replicates the output block the corresponding number of times
If an instrument offers more than one output of the same type, the properties for each shall be entered separately
NOTE This block is normally only needed for positioners and feedback units.
Type of output
The "output type" property of polymorphism control in the "Type of output" sub-block specifies the signal output type to be described, effectively replicating the desired block along with all its associated properties The block name " output" in Table 2 represents a variety of output type blocks.
• Binary electronic output (transistor, thyristor etc.)
• Pneumatic/hydraulic output for positioner
Should the output to be described not be contained within the list of output types, the block
“Manufacturer-specific output” shall be used
NOTE Digital outputs are specified in the Digital communication block
The content of the “ output” blocks varies, with analog signal blocks typically containing different parameters compared to binary signal blocks These blocks may include various sub-blocks.
Digital communication
General
The block digital communication shall contain information about the digital communication interfaces provided by the device
The number of interfaces offered by the equipment is to be entered in the cardinality property
The "number of communication interfaces" replicates the "Digital communication interface" block multiple times Each interface can be assigned a unique PCE identifier or tag name, along with its corresponding category and function as needed.
NOTE This block is normally only needed for positioners and feedback units.
Digital communication interface
The block digital communication interface must include properties that define its functional, metrological, and electrical characteristics The "type of communication" property specifies the communication interface, such as HART, PROFIBUS PA, or FOUNDATION fieldbus H1 If the desired communication interface type is not listed among the output types, "Manufacturer-specific output" should be utilized.
Examples of commercially available products include HART, PROFIBUS PA, and FOUNDATION Fieldbus H1 This information is provided for user convenience and does not imply IEC's endorsement of these products.
Performance
General
The block performance shall contain properties that describe the performance of final control elements The properties shall be compiled into the sub-blocks:
• Reference conditions for the device
The cardinality property defines the number of performance variables for which a performance statement is generated, effectively replicating the block accordingly Each output can be assigned a unique PCE identifier or tag name, along with its relevant category and function as needed.
Reference conditions for the device
The block reference conditions for the device shall contain properties describing the conditions under which the measuring equipment was tested and for which the performance specifications apply.
Performance variable
The block performance variable will include characteristics that detail the accuracy and dynamic response of the measuring equipment under specified reference conditions, organized into distinct sub-blocks.
• Reference conditions for the performance variable
• Absolute performance for
6.9.3.2 Reference conditions for the performance variable
The block reference conditions shall contain properties describing the conditions under which the measuring equipment was tested and for which the performance specifications apply
NOTE The reference conditions block is replicated with the process variable block Normally the conditions will remain the same, however, there are some cases, where they will be different
The block percentage performance reflects the accuracy of an output as a percentage of scale, value, or scan, and can be expressed over a single range or multiple measurement intervals It includes standard accuracy statements as well as properties related to the influence of external factors and the dynamic behavior of the measuring equipment Information regarding dynamic and long-term behavior is detailed in the sub-blocks.
The block dynamic behaviour shall contain properties that describe the response of a device to a preset change in input
The block long-term behaviour shall contain properties that change in the output of a device over a fixed period of time
6.9.3.4 Absolute performance for
The block absolute performance for must include properties that define the accuracy of an output as an absolute value, which can be expressed over a single range or multiple measurement intervals Alongside standard accuracy statements, it should also address the impact of external factors and the dynamic behavior of the measuring equipment Details regarding dynamic and long-term behavior are recorded in the sub-blocks.
The block dynamic behaviour shall contain properties that describe the response of a device to a preset change in input
The block long-term behaviour shall contain properties that change in the output of a device over a fixed period of time.
Rated operating conditions
General
The block rated operating conditions must outline the properties that define the equipment's operational limits, ensuring it functions without permanent impairment and remains within safe operating parameters This section will include four essential sub-blocks.
NOTE The rated operations block in the DLOP provides confirmation that the requirements of the design operating conditions block of the OLOP can be met by the equipment, see 5.4.
Installation conditions
The block installation conditions shall contain properties describing the installation conditions necessary to obtain the specified performance of the equipment It shall comprise the following sub-blocks:
The block deployment conditions shall contain properties that describe the deployment of the equipment in the pipe required to obtain the specified performance of the equipment
The block start-up conditions shall contain properties that describe the start-up conditions which shall be upheld to ensure that the device performs within its specified limits.
Environmental design ratings
The block environmental design ratings will include properties that outline the environmental conditions for the safe storage and operation of the equipment within its specified limits, ensuring no permanent impairment of its performance This block will consist of three distinct sections.
• External cleaning in place conditions
The block normal environmental conditions shall contain properties describing the range of conditions of the environment within which the equipment is designed to operate within specified performance limits
The block limiting environmental conditions shall contain properties describing the extreme values which an influence quantity can assume without causing permanent impairment of the operating characteristics of the equipment
6.10.3.4 External cleaning in place conditions
The block external cleaning in place conditions shall contain properties describing the allowable conditions for the external cleaning of the device.
Process design ratings
The block process design ratings must include properties that define the operational conditions for the equipment to function accurately without causing permanent damage to its characteristics The design may consist of a maximum of three blocks.
• Internal cleaning in place conditions
The block normal process conditions shall contain properties describing the range of process conditions within which a device is designed to operate within specified performance limits
The block limiting process conditions shall contain properties describing the extreme values which a process quantity can assume without causing permanent impairment of the operating characteristics of the equipment
6.10.4.4 Internal cleaning in place conditions
The block cleaning in place conditions shall contain properties describing the allowable conditions for the in-line cleaning of the device.
Pressure-temperature design ratings
The block pressure-temperature design ratings must include properties that define the safe operating range of the equipment based on pressure and temperature Additionally, it should specify the extreme temperature and pressure values that the equipment can endure without compromising its integrity, although these conditions may lead to permanent damage The block will also feature a sub-block for further details.
The cardinality property “number of design deratings” determines the number of times the design deratings block is replicated, in order to map a temperature-pressure derating curve
The block design deratings shall contain properties describing the extreme conditions which the device or pipe can withstand without being a risk to persons and environment.
Mechanical and electrical construction
General
The block mechanical and electrical construction shall contain properties describing the constructional details of the equipment and its subcomponents It may comprise the following sub-blocks:
Overall dimensions and weight
The block overall dimensions and weight shall contain properties describing the general mechanical details of the equipment.
Structural design
The block structural design must include detailed properties that outline the construction of the device It should feature sub-blocks that represent the different mechanical components of the equipment, such as valve style, body, end connections, and trim style.
Explosion protection design approval
The block explosion protection design approval shall contain properties describing the type of protection offered by the equipment as well as the hazardous areas in which it may operate.
Codes and standards approval
The block codes and standards approval shall contain properties of codes and standards for which the equipment is approved, for instance pressure equipment directive.
Operability
General
The block operability shall contain properties describing the design, operating concept, structure and functionality of the human interface of the equipment The block shall contain the sub-blocks:
Basic configuration
The block basic configuration shall contain properties describing the means provided to influence the basic settings of the equipment.
Parametrization
The block parametrization shall contain properties describing the means provided to configure the equipment.
Adjustment
The block adjustment shall contain properties describing the means provided for the adjustment of the equipment.
Operation
The block operation shall contain properties describing the means provided for the operation of the equipment.
Diagnosis
The block diagnosis shall contain properties describing the diagnostic facilities provided by the equipment.
Power supply
The block power supply must include specifications for both permanent and temporary power to ensure the equipment operates effectively Various sub-blocks can be utilized for this purpose.
Certificates and approvals
The block certificates and approvals shall contain properties describing the certificates and approvals that can be supplied with the equipment The following sub-blocks can be used:
• Approval for use in special applications
Component part identifications
The block component part identifications can contain properties identifying and describing the component parts of the final control element (see Clause 7), or a list of recommended spare parts
The same approach as described in IEC 61987-11 is valid also for LOPs for the final control elements
The same approach as described in IEC 61987-11 is valid also for LOPs for the final control elements
Device type dictionary – Classification of final control elements
The IEC Common Data Dictionary (CDD) serves as a vital resource for the classification of data, with the working version accessible at http://std.iec.ch/cdd/iec61987/cdddev.nsf/ As parts of IEC 61987 are established as international standards, the normative versions will also be available in the IEC Common Data Dictionary at http://std.iec.ch/iec61360 This system supports electronic business processes across various industries by facilitating error-free information sharing through common concepts and classification models, ultimately enhancing data integrity and management of product and service portfolios.
Table A.1 presents the classification scheme for equipment used in industrial-process automation, serving as the foundation of this standard Each device type is assigned a unique identifier, corresponding to an object code in the IEC Common Data Dictionary (CDD).
“LOP” in Table A.1 indicates the device types and LOPs which will be available in further parts of the IEC 61987 series
Table A.1 – Classification scheme for final control elements
Industrial-process automation equipment, identified as LOP, facilitates either partial or fully automated operations The final control element, referred to as IEC-ABA000, quantitatively responds to control signals to execute control actions This includes control valves, which adjust fluid flow rates proportionally, and automated on/off valves, which regulate flow based on the state of a signal from a control or safety instrumented system, identified as IEC-ABD340.
NOTE A control valve/automated on/off valve comprises a valve body assembly, an actuator and if required other valve accessories
The IEC-ABD341 valve body assembly is a crucial component of a control valve or automated on/off cut-off valve It creates a pressure-retaining envelope that houses a closure member, which is essential for regulating the flow rate.
IEC-ABD342 x valve with linear motion valve with a closure member that is moved linearly into or away from a seat to modulate the flow
The IEC-ABD343 globe valve features linear motion, allowing the closure member to move perpendicularly to the seat plane In contrast, the IEC-ABD344 diaphragm/pinch valve also utilizes linear motion, altering fluid flow by deforming a flexible closure member.
The IEC-ABD346 x gate valve features linear motion with a flat gate that moves parallel to the seat plane, while the IEC-ABD345 x valve utilizes rotary motion, allowing its closure member to rotate towards or away from the seat to control flow Additionally, the IEC-ABD347 ball valve operates with rotary motion, incorporating a spherical closure member that has an internal passage, with the center of the spherical surface aligned with the shaft axis.
IEC-ABD349 x butterfly valve valve with rotary motion with a circular body and a rotary motion disk closure member, pivotally supported by its shaft
NOTE The shaft and/or closure member can be centered or offset
Classification Definition Identifier LOP eccentric plug valve valve with rotary motion with an eccentric closure member that may be in the shape of a spherical or conical segment
IEC-ABD348 x plug valve valve with rotary motion with a closure member that is cylindrical or conical, with an internal passage
The IEC-ABD351 segmented ball valve features a rotary motion mechanism, utilizing a closure member shaped as a segment of a sphere Notably, the center of the spherical surface aligns with the axis of the shaft, ensuring efficient operation and precise control.
IEC-ABD350 actuator that part of a control valve/automated on/off valve which transforms a signal into a corresponding movement controlling the position of the internal regulating mechanism (closure member)
NOTE The signal or energizing force can be pneumatic, electric, hydraulic, or any combination thereof
The IEC-ABD series includes various types of linear and rotary actuators designed for specific control mechanisms The IEC-ABD353 is a linear actuator that moves perpendicularly to the seating plane, while the IEC-ABD354 utilizes a pneumatic signal for motion control The IEC-ABD356 operates with an electrical signal, and the IEC-ABD355 relies on hydraulic signals For electro-hydraulic control, the IEC-ABD357 is available, alongside the manual control option of the IEC-ABD358, which uses a handwheel In the rotary actuator category, the IEC-ABD359 modulates flow by rotating into or away from a seat, with the IEC-ABD360 using pneumatic signals, the IEC-ABD365 employing electrical signals, and the IEC-ABD361 utilizing hydraulic signals The IEC-ABD363 features electro-hydraulic control, while the manual rotary actuator, IEC-ABD362, also uses a handwheel Lastly, the IEC-ABD364 serves as a valve/actuator accessory, enhancing control functions for automated on/off valves.
NOTE Examples are positioners, relays, solenoid valves, airsets, handwheels, and limit switches
The IEC-ABD366 positioner is an actuator and valve accessory that is mechanically linked to a moving component of a final control element or its actuator It automatically adjusts its output to the actuator, ensuring that the closure member maintains a desired position in relation to the input signal.
An I/P converter is an actuator or valve accessory that receives a current signal from one system and converts it into a pneumatic signal for a second system According to ANSI/ISA 75.05.01-2000, this device is referred to as a transducer.
IEC-ABD370 x solenoid valve actuator/valve accessory comprising a valve with linear action which is fitted with a solenoid for quick operation
IEC-ABD371 x limit switch actuator/valve accessory comprising a pneumatic, hydraulic or electrical device that relates to the valve stem to detect a single, preset valve stem position
NOTE A position switch is also called a limit switch
IEC-ABD368 x air operated valve actuator/valve accessory comprising a valve with a 2/2, 3/2 or 5/2 relay triggered by a pneumatic signal
IEC-ABD376 filter regulator actuator/valve accessory comprising a regulator that is used to control the supply pressure to the valve actuator and its auxiliaries
NOTE In ANSI/ISA 75.05.01-2000 a filter regulator is called an air set
The IEC-ABD377 is a lock-up relay actuator designed to maintain its energized position, while the IEC-ABD378 serves as a position transmitter actuator that is mechanically linked to the valve stem or shaft, generating and transmitting a pneumatic or electrical signal that indicates the valve's position.
NOTE Position feedback is the term used in IEC 60534-7
IEC-ABD369 x quick exhaust actuator/valve accessory that is a fast-acting valve used in a single-acting pneumatic actuator to quickly release pressure
The IEC-ABD380 actuator relief valve is a safety device designed to automatically relieve pressure in a system when it exceeds a predetermined limit, and it closes when the pressure drops below that limit This full lift pressure relief valve is specifically intended for use with gas or steam services.
IEC-ABD373 reversing amplifier actuator/valve accessory that operates a double- acting pneumatic actuator using a single-acting pneumatic or electro-pneumatic positioner or position switch
IEC-ABD379 volume booster actuator/valve accessory used together with a positioner to increase the positioning speed of a pneumatic actuator
IEC-ABD372 volume tank actuator/valve accessory comprising a gas tank that provides a back-up in the event of loss of instrument fluid supply
IEC-ABE322 flow modification accessory accessory of a control valve/automated on/off valve that is used to modify the characteristics of fluid flow
NOTE It usually comprises a device mounted in the pipeline upstream and/or downstream of the valve body assembly
The LOP diffuser is a flow modification accessory that includes a perforated plate or tube insert, designed with a fixed area and installed downstream of the valve body assembly Its primary functions are to minimize noise levels generated by the valve and to decrease the pressure drop across the valve.
The IEC-ABD383 is a restriction orifice flow modification accessory featuring a plate with multiple holes, while the IEC-ABD382 serves as a process regulator final control element, consisting of a self-actuating control valve designed to modulate fluid flow rates This setup is essential for maintaining a specified upstream or downstream process pressure.
IEC-ABD385 pressure reducing regulator process regulator that acts against a spring pressure to maintain a constant downstream pressure
IEC-ABD386 x back pressure/excess pressure regulator process regulator that acts against a spring pressure to maintain a constant upstream pressure
IEC-ABD387 x differential pressure regulator process regulator that acts against a spring pressure to maintain a constant differential pressure
The IEC-ABD374 flow regulator is designed to maintain a constant flow value by acting against a spring, while the IEC-ABD375 temperature regulator modulates fluid flow to ensure a predefined downstream process temperature is achieved.
IEC 60534-7, Industrial-process control valves – Part 7: Control valve data sheet
IEC 60770-1, Transmitters for use in industrial-process control systems – Part 1: Methods for performance evaluation
IEC 61360-1, Standard data element types with associated classification scheme for electric components – Part 1: Definitions – Principles and methods
IEC 61360-2, Standard data element types with associated classification scheme for electric components – Part 2: EXPRESS dictionary schema
IEC 62424, Representation of process control engineering – Requests in P&I diagrams and data exchange between P&ID tools and PCE-CAE tools
ISO 13584-25, Industrial automation systems and integration – Parts library – Part 25: Logical resource: Logical model of supplier library with aggregate values and explicit content
ISO 13584-42, Industrial automation systems and integration – Parts library – Part 42:
Description methodology: Methodology for structuring parts families
ISO 15926-2, Industrial automation systems and integration – Integration of life-cycle data for process plants including oil and gas production facilities – Part 2: Data model
ISO 15926-4, Industrial automation systems and integration – Integration of life-cycle data for process plants including oil and gas production facilities – Part 4: Initial reference data
ANSI/ISA 75.05.01-2000 Control valve terminology
CWA 15295:2005-08, Description of References and Data Models for Classification
ISA–TR20.00.01:2001, Specification Forms for Process Measurement and Control
NE 100 Version 3.2:2010, Use of Lists of Properties in Process Control Engineering