JP2023136653A - Field device and display object for field device - Google Patents

Abstract

To enable a worker patrolling a site to easily understand the type of a field device and a measurement target or a control target.SOLUTION: A field device 10 for measuring a physical quantity of a measurement target or controlling a control target, includes a display unit 14 that displays a single pictogram P representing both a device type of the field device 10 and the measurement target of the field device 10. The pictogram P may further represent a system to which the field device 10 belongs according to its use. The pictogram P may further represent a usage environment of the field device 10. The pictogram P includes a graphic symbol representing the device type and the measurement target, and the usage environment may be represented by a background color of the graphic symbol.SELECTED DRAWING: Figure 1

Description

The present invention relates to field devices used in plants and the like, and displays for field devices.

A large number of field devices are installed at sites such as industrial plants. Field devices include measurement devices such as flowmeters, positioners that control flow control valves, and the like. These field devices may have different appearances depending on the manufacturer even if they are of the same type, or may have similar appearances between different types of devices. Therefore, it is difficult for a worker who patrols the site and inspects each field device to grasp at a glance the type of each field device and the object to be measured or controlled.

Here, Patent Document 1 discloses a technique for graphically displaying the arrangement of a plurality of field devices on an external indicator different from the plurality of field devices. Patent Document 2 discloses a technology in which a field device converts information such as its own device type into a two-dimensional code and displays it.

JP2012-27674A JP2012-32855A

The technique described in Patent Document 1 is not suitable for use by workers who patrol the field because information on field devices cannot be obtained without moving to the indicator. The technique described in Patent Document 2 requires a two-dimensional code reading device, and it takes time and effort to understand the device type. Furthermore, in Patent Document 2, the measurement target or control target of the field device is not reflected in the two-dimensional code.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to enable a worker patrolling the field to easily understand the type of field device and the object to be measured or controlled.

In order to solve the above problems, a field device according to the present invention is a field device that measures a physical quantity of a measurement target or controls a control target, and the field device has a device type of the field device, and a field device that measures a physical quantity of a measurement target or controls a control target. and a display unit that displays a single pictogram representing both the control target and the control target.

As an example, the pictogram further represents a system to which the field device belongs according to its usage.

As an example, the pictogram further represents a usage environment of the field device.

As an example, the pictogram includes a graphic symbol representing the device type and the measurement target or the control target, and the usage environment is represented by the background color of the graphic symbol.

As an example, the display section is a display, and further includes a control circuit that displays the pictogram as an image and sets the pictogram displayed on the display section.

As an example, the pictogram includes a mark indicating the orientation of the pictogram.

As an example, the pictogram further represents the operating principle of the field device.

In one example, the pictogram further represents an accessory of the field device.

The printed matter for a field device according to the present invention is a display material for a field device provided on a field device that measures a physical quantity or controls a controlled object, and includes a display material that displays the device type of the field device and the measurement object or object of the field device. A single pictogram representing both the controlled object and is expressed by at least one of printing and engraving.

According to the present invention, a worker patrolling the site can easily understand the type of field device and the object to be measured or controlled.

FIG. 1 is a configuration diagram of a field device according to a first embodiment of the present invention. FIG. 2 is a table showing the correspondence between pictograms and information represented by the pictograms. FIG. 3 is a table showing the correspondence between pictograms and information represented by the pictograms. FIG. 4 is a table showing the correspondence between pictograms and information represented by the pictograms. FIG. 5 is a table showing the correspondence between pictograms and information represented by the pictograms. FIG. 6 is a table showing the correspondence between pictograms and information represented by the pictograms. FIG. 7 is a table showing the correspondence between pictograms and information represented by the pictograms. FIG. 8 is a table showing the correspondence between pictograms and information represented by the pictograms. FIG. 9 is a diagram showing an example of a pictogram. FIG. 10 is a configuration diagram of a field device according to the first embodiment of the present invention. FIG. 11 is a table showing the correspondence between pictograms and information represented by the pictograms. FIG. 12 is a diagram showing an example of a printed matter and an imprint for a field device according to a modification.

[First embodiment]
The field device 10 according to the first embodiment shown in FIG. 1 is configured as a measuring device. The field device 10 includes a piping section 11, a sensor 12, an operation section 13, a display section 14, and a control circuit 15. The field device 10 is installed at a site such as a plant in the middle of a pipe through which a predetermined fluid flows, and is configured to measure a physical quantity of the fluid as a measurement target.

The piping section 11 is a hollow member, connected to the piping, and allows the fluid to flow therethrough. The sensor 12 converts the physical quantity of the fluid flowing inside the piping section 11 into an electrical signal. The operation unit 13 includes operation buttons and the like that accept operations by an operator. The display unit 14 is a display such as a liquid crystal display device, and in addition to displaying physical quantities measured by the field device 10, displays an image of a pictogram P to be described later.

The external shape of the field device 10 differs depending on the type of measuring device the field device 10 is. For example, the field device 10 such as a liquid level meter or a hydrometer does not need to have the piping section 11.

The control circuit 15 is composed of a microcomputer or the like, and controls the entire field device 10. The control circuit 15 measures the physical quantity by processing the electrical signal from the sensor 12 and acquiring the physical quantity represented by the electrical signal. The control circuit 15 outputs the measured physical quantity to the outside via a communication module (not shown) or displays it on the display unit 14. The control circuit 15 displays a pictogram P representing various information regarding the field device 10 at once on the display unit 14 based on the operator's operation on the operation unit 13. Specific examples of the pictogram P are illustrated in FIGS. 2 to 9.

The pictogram P shown in FIGS. 2 and 3 is configured as a single pictogram representing both the device type of the field device 10 on which the pictogram P is displayed and the measurement target. The pictogram P includes a frame P1 and a graphic symbol P11 placed within the frame P1.

The circle symbol P11 represents a pressure gauge as a device type. Similarly, the graphical symbol P12, which is a V-shaped polygonal line, represents a flowmeter. The graphical symbols P13 and P14, which are a combination of a circle and a horizontal line within it, represent a hydrometer or a liquid level system. The graphical symbols P13 and P14 are distinguished by the position of the horizontal line. The graphical symbol P15, which is a combination of a circle and a vertical line connected to the circle, represents a thermometer. The graphic symbol P16, which is a combination of a circle and a V-shaped broken line that partially overlap, represents a differential pressure gauge.

As can be understood by comparing FIG. 2 and FIG. 3, the wavy polygonal line diagram symbol P21 shown in FIG. 3 represents a liquid as a measurement target. On the other hand, as shown in FIG. 2, each pictogram P without a graphic symbol representing a measurement target (a pictogram with only the graphic symbol of the device type) represents a gas as a measurement target. Note that the pictogram P representing a liquid level gauge, etc., indicates a liquid as a measurement target even if it does not have the graphic symbol P21, since the measurement target is a liquid and not a gas. Like these, the pictogram P can also represent a measurement target by not including a specific graphic symbol. The technical idea that the pictogram P represents specific information by not including a specific graphic symbol is also adopted for other information that the pictogram P represents, such as the device type. As the graphical symbol representing the measurement target, a graphical symbol representing another fluid, such as a mixture of gas and liquid, may be prepared. Moreover, as a graphic symbol representing a measurement target, a graphic symbol representing water, oil, solution, fluid temperature, etc. may be prepared.

As shown in FIG. 4, the pictogram P may represent the belonging system by frame shapes such as frames P1 to P3, in addition to the device type and measurement target. The affiliated system is a system divided according to the usage of the field device 10, and includes a control system, a monitoring system, and a redundant system. The control system is a system used for various controls such as flow rate control. The physical quantity measured by the field device 10 belonging to this control system is used, for example, as a feedback value for feedback control. The monitoring system is a system that monitors the presence or absence of abnormalities. Physical quantities measured by field devices 10 belonging to this monitoring system are used for abnormality monitoring. For example, if the physical quantity exceeds a predetermined threshold value, an abnormality is detected. The redundant system is a system that makes at least one of the control system and the monitoring system redundant. The redundant field device 10 operates as a substitute for the failed control or monitoring field device 10 when the field device 10 fails.

In the pictogram P, a rectangular frame P1 represents a control system, a rectangular frame P2 with rounded corners represents a monitoring system, and a rectangular frame P3 with a cutout (hexagonal in this case) in the shape of a rectangular corner represents a redundant system. represents.

As shown in FIG. 5, the pictogram P may represent the usage environment of the field device 10 in addition to the device type and measurement target by the background color within the frame (the background color of the graphic symbol). In FIG. 5, the ground color is expressed by dot density. The ground color may be a specific color such as red or yellow.

As shown in FIG. 5, a high density of dots or a red background color indicates that the field device 10 is used in an environment where there are hazardous substances (for example, an environment where the measurement target is a hazardous substance). A low density of dots or a yellow background color indicates that the field device 10 is being used in an explosion-proof area. Since the usage environment is represented by the background color within the frame of the pictogram P, it is possible to use expressions similar to the conventional method of notifying dangerous substances by color, and workers can intuitively You can understand the usage environment.

As shown in FIGS. 6 and 7, the pictogram P may include a mark P31 or P32 indicating its direction. The triangular mark P31 is arranged at the lower left corner of the frame P1 of the pictogram P. The band-shaped mark P32 is arranged at the lower side of the frame P1 of the pictogram P. Since the field devices 10 are installed in various orientations, the orientations of the pictograms P also vary. If the orientation is different, the pictogram P will be difficult to recognize. Furthermore, as shown in FIGS. 6 and 7, the graphical symbols P14 and P21 of the hydrometer are difficult to distinguish from the graphical symbols P13 and P21 of the liquid level meter (FIG. 3) when viewed from upside down. The mark P31 and the mark P32 allow the direction of the pictogram P to be easily understood.

As shown in FIG. 8, the pictogram P may represent the operating principle of the field device 10 using graphical symbols P41 to P44. The symbol P41 indicates that the operating principle of the pressure gauge is a diaphragm type. The symbol P42 indicates that the operating principle of the differential pressure gauge is differential pressure detection using a pair of diaphragms. The graphical symbol P43 indicates that the operating principle of the flowmeter is Coriolis type. The graphical symbol P44 indicates that the operating principle of the flowmeter is an electromagnetic type using a coil.

As shown in FIG. 9, the pictogram P can simultaneously represent the various information described above. The pictogram P shown in FIG. 9 represents a flowmeter as the device type of the field device 10 displaying the pictogram P (graphic symbol P12), a fluid as the measurement target (graphic symbol P21), and a monitoring system as the affiliated system. (frame P2). Furthermore, the pictogram P shown in FIG. 9 represents a dangerous substance as the usage environment (red background color), and represents an electromagnetic type (graphic symbol P44) as the operating principle. Furthermore, the pictogram P in FIG. 9 is upside down (mark P31). As shown in FIG. 9, by arranging a plurality of graphical symbols inside the frame, multiple pieces of information regarding the field device 10 (information represented by each graphical symbol or no graphical symbol) can be displayed using a single pictogram. be done.

Note that the specific form of the pictogram P is arbitrary and is not limited to the forms shown in FIGS. 2 to 9. The various information may be represented by, for example, a combination of one or more of a graphic symbol, various marks such as the mark P31, a frame shape, and a specific graphic symbol or the absence of a mark.

As explained above, the field device 10 configured to measure the physical quantity of the measurement target includes the display unit 14 that displays a single pictogram P representing both the device type of the field device 10 and the measurement target. Good. Using this single pictogram P, a worker who patrols the site and inspects a large number of field devices can easily identify the device type and measurement target by simply looking at the field device 10 (more specifically, the display section 14). At the same time, it can be grasped intuitively. Therefore, the worker can easily grasp this information.

As described above, the pictogram P may further represent the system to which the field device 10 belongs according to its use. Thereby, the operator can visually and intuitively understand the purpose of the field device 10, and therefore can easily understand the purpose.

As described above, the pictogram P may further represent the usage environment of the field device 10. Thereby, the operator can visually and intuitively understand the usage environment of the field device 10, and therefore can easily understand the usage environment.

As described above, the pictogram P includes a graphical symbol representing the equipment type and the measurement target (for example, a combination of graphical symbols P11 and P21 or a graphical symbol P11 alone), and the usage environment is represented by the background color of the graphical symbol. It is good. Although the background color of the graphic symbol is the ground color inside the frame P1 etc. in the above example, the frame P1 etc. may not be provided. The background color of the graphical symbol may be, for example, the color surrounding the graphical symbol. With the above configuration, the worker can visually and intuitively grasp information related to his/her own safety, and therefore can easily grasp the information.

Note that the above-mentioned belonging system and usage environment are not determined until the field device 10 is actually installed at the site. Therefore, the control circuit 15 may have a function of setting the pictogram P displayed on the display section 14. For example, the control circuit 15 stores pictogram P candidates for each system to which it belongs and/or usage environment. After determining the system to which the field device 10 belongs and/or the usage environment, the operator operates the operation unit 13 to select the pictogram P representing the determined system and/or usage environment. As a result, the pictogram P displayed on the display unit 14 is set. After this, the control circuit 15 displays the set pictogram P on the display section 14. With such a configuration, it is possible to display a pictogram that appropriately represents the affiliated system and/or usage environment.

As described above, the pictogram P includes the mark P31 indicating the orientation of the pictogram P and the like. Thereby, the operator can easily understand the orientation of the pictogram P and the information that the pictogram P represents.

As mentioned above, the pictogram P further represents the operating principle of the field device 10. Thereby, the operator can visually and intuitively understand the operating principle of the pictogram P, and therefore can easily understand the operating principle.

A large number of field devices 10 are installed at sites such as industrial plants, and the display portions 14 of these field devices 10 are difficult to distinguish at first glance, even among different types of field devices 10 (for example, flow meters, pressure gauges, differential pressure gauges, thermometers, etc.). Therefore, it is difficult to determine the device type of the field device 10 including the above-mentioned parts at first glance. Furthermore, the object to be measured cannot be confirmed from the outside of the field device 10. Furthermore, in the field, if the measurement by the field device 10 does not go well, a very dangerous situation may occur. required to do so. Here, the display unit 14 of the field device 10 is generally small, and when considering displaying the measured values and the like, the display space for information such as the device type is limited. In this embodiment, the field device 10 displays various information using a single pictogram P, so that a worker patrolling the site can easily visually grasp information that is difficult to grasp from the outside. The display space of the pictograms P can be saved more than when each type of information is individually displayed as a character string or a plurality of pictograms.

[Second embodiment]
A field device 20 according to the second embodiment shown in FIG. 10 is configured as a positioner that controls the operation of a flow control valve 30.

The flow control valve 30 includes an actuator 31, a valve shaft 32, a valve body 33, and a piping section 34. The actuator 31 displaces the valve body 33 via the valve shaft 32 to open and close a flow path of a piping section 34 that is connected to the piping of the plant and forms a flow path through which fluid flows. This controls the flow rate of fluid flowing through the plant piping. Although the flow control valve 30 is configured as a gate valve which is a direct-acting valve in FIG. 10, it may be a globe valve which is another direct-acting valve, a butterfly valve or a ball valve which is a rotary valve, or the like.

The field device 20 as a positioner controls the operation of the flow control valve 30, that is, the valve opening degree of the valve body 33, based on a control signal (for example, an electric signal or a pneumatic signal) from a host device. The field device 20 includes a feedback lever 21 , an operating section 22 , a display section 23 , and a control circuit 24 .

The feedback lever 21 is engaged with a pin 32A provided on the valve shaft 32, and rotates in conjunction with the displacement of the valve shaft 32, that is, the valve body 33. The operation unit 22 includes operation buttons and the like that accept operations by an operator. The display unit 23 is a display such as a liquid crystal display device, and displays an image of a pictogram Q, which will be described later.

The control circuit 24 converts a control signal from a host device into an air signal, supplies the converted air signal to the actuator 31, and operates the actuator 31 using the air signal. At this time, the control circuit 24 detects the rotation angle of the feedback lever 21 using a sensor (not shown), uses the detected rotation angle as a feedback value, and performs feedback control using the air signal as the operation amount for the actuator 31. By such an operation, the valve body 33 is displaced so that the valve opening degree is specified by the control signal from the host device. The control circuit 24 performs a process of converting a control signal into an air signal by controlling, for example, a nozzle flapper mechanism that converts a control signal (electrical signal) into an air signal, a pilot relay that amplifies the air signal, and the like. The control circuit 24 is composed of, for example, a microcomputer.

The control circuit 24 displays a pictogram Q representing various information regarding the field device 20 at once on the display unit 23 based on the operator's operation on the operation unit 22. A specific example of the pictogram Q is illustrated in FIG.

As shown in FIG. 11, the pictogram Q displayed on the display unit 23 is configured as a single pictogram representing at least both the device type of the field device 20 on which the pictogram Q is displayed and the control target. . The control objects represented by the pictogram Q include the type of flow rate control valve 30 whose operation is directly controlled by the field device 20 as a positioner, and the fluid in the piping controlled by the field device 20 as a positioner via the flow rate control valve 30. including at least one. Like the pictogram P, the pictogram Q is configured as a single pictogram including a frame Q1 and a graphic symbol Q11 and the like placed within the frame Q1.

A fan-shaped graphical symbol Q11 represents a positioner as a device type. The fan-shaped graphical symbol Q11 is a symbol simulating the rotation of the feedback lever 21. In this way, if the graphic symbol is a symbol that imitates the shape or operation of the device that represents the information, the operator can easily and intuitively grasp the content of the pictogram Q. This also applies to the graphic symbol of the pictogram P. The symbols P43 and P44 of the pictogram P imitate the shapes of parts (U time or coil) related to the operating principle they represent.

Graphical symbols Q21 to Q23 to the left of the graphical symbol Q11 represent control signals input to the field device 20 as a positioner. The diagram symbol Q21 does not specify whether the control signal is an electric signal or an air signal. The graphical symbol Q22 indicates that the control signal is an electrical signal. The graphical symbol Q23 indicates that the control signal is an air signal. A graphical symbol Q24 on the right side of the graphical symbol Q11 represents a manipulated variable signal output from the field device 20 as a positioner and input to the flow rate control valve 30. Note that the output of the positioner may be omitted. The graphical symbol Q24, like the graphical symbol Q23, represents an air signal.

The circle symbol Q31 represents a rotary valve as a flow rate control valve to be controlled by the field device 20. The diagram symbol Q32 represents a diaphragm valve as a flow rate control valve to be controlled by the field device 20. The diagram symbol Q33 represents a butterfly valve as a flow control valve to be controlled by the field device 20. The graphical symbols Q32 and Q33 and the arc portion of the graphical symbol Q11 may or may not be in contact with each other. A pictogram Q (see the top row and the third row from the top) without a graphical symbol representing a controlled object, such as graphical symbols Q31 to Q33, represents a direct-acting valve as a flow rate control valve to be controlled by the field device 20. A direct operated valve may be represented by doubling the arc of the graphical symbol Q11, making the arc a thick line, or adding a chord to the graphical symbol Q11. As shown above, the graphical symbols may represent the type of direct-acting/rotary valve as the equipment type, or may represent the detailed type such as a diaphragm valve as the equipment type.

The graphical symbols Q22 to Q24 and Q32 to Q33 are symbols that imitate graphical symbols used in piping system diagrams (for example, graphical symbols defined by JIS standards). By using such graphic symbols, the operator can more intuitively and easily grasp the information represented by the pictogram Q. Note that the graphical symbols of the pictogram P may also be modeled after the graphical symbols used in piping system diagrams.

The symbol Q41 indicates that the fluid to be controlled via the flow rate control valve 30 of the field device 20 is a liquid. A pictogram Q without the graphical symbol Q41, that is, without a graphical symbol representing a controlled object via the flow rate control valve 30, represents that the controlled object is gas. As the graphical symbol representing the object to be controlled via the flow rate control valve 30, a graphical symbol representing another fluid, for example, a mixture of gas and liquid, may be prepared. As the graphic symbol representing the object to be controlled via the flow rate control valve 30, a graphic symbol representing water, oil, solution, fluid temperature, etc. may be prepared.

The diagram symbol Q51 represents a limit switch that is provided as an accessory of the field device 20 and detects whether the valve body 33 is fully closed or fully opened. In this way, pictogram Q may represent any accessory. The pictogram P may also be configured to represent an accessory.

As described above, the field device 20 configured to control a controlled object may include the display section 23 that displays a single pictogram Q representing both the device type of the field device 20 and the controlled object. With this single pictogram Q, a worker who patrols the site and inspects a large number of field devices can intuitively grasp the device type and control target at the same time just by looking at the field device 10 in question. Therefore, the worker can easily grasp this information.

As mentioned above, the pictogram P may further represent an accessory to the field device. This allows the operator to visually and intuitively easily grasp the accessories.

Like the pictogram P, the pictogram Q may represent at least one of the system to which it belongs, the usage environment, the orientation, and the principle of operation. Similar to the first embodiment, the system to which it belongs and the environment in which it will be used are not determined until the field device 20 is actually installed at the site. Therefore, the control circuit 24 may have a function of setting the pictogram Q displayed on the display section 23. The description and effects of these specific configurations are based on the first embodiment.

The specific form of the pictogram Q is arbitrary, and the operation type (manual/electric/air/hydraulic/hydraulic, etc.) of the flow rate control valve 30 may be represented by a graphic symbol or the like.

[Modified example]
The pictogram P or Q may be expressed by at least one of printing and engraving. Thereby, the pictogram P or Q is expressed by one or both of color and unevenness. For example, the pictogram P or Q may be printed directly on the device casing, directly stamped on the device casing, or expressed by both direct printing and stamping on the device casing. In this case, this printed and/or engraved portion becomes a display section that displays the pictogram P or Q. As another example, the field device 10 or 20 may have a display object on which the pictogram P or Q is printed and/or stamped as a display section that displays the pictogram P or Q. Examples of display objects on which the pictograms P or Q are printed include printed materials such as stickers that are affixed to the field device 10 or 20, or printed materials such as tags that are attached to the field device 10 or 20 with a string or the like. Printing includes offset printing, inkjet printing, three-dimensional printing, etc., and also includes painting as appropriate. Examples of display objects stamped with pictograms P or Q include metal plate-shaped markings that can be attached to field devices 10 or 20 such as tags with strings or the like. In addition to printing, a stamp may be made on a printed matter, or in addition to a stamp, a printing may be made on a stamped object. The display object may be anything for the field device, and may be prepared separately from the field device 10 or 20 and later attached or attached to the field device 10 or 20. FIG. 12 shows how a sticker 90, which is a printed matter on which a pictogram P is printed, is attached to the field device 10. In FIG. 12, a sticker 90 is attached to the side surface of the casing of the field device 10. In FIG. Further, FIG. 12 shows a state in which a tag 95, which is an engraved object with a pictogram P engraved thereon, is attached to the field device 10 with a string 96. Naturally, only either the seal 90 or the tag 95 needs to be provided on the field device 10. A frame such as frame P1 or Q1 of pictogram P or Q may be expressed by the outline of the displayed object. According to such a display, a pictogram can be added to an existing field device later. Furthermore, the orientation of the pictogram can be adjusted by the direction of pasting or attachment.

The present invention can be applied to general field devices that measure physical quantities to be measured or control objects to be controlled. Field devices that measure physical quantities to be measured or control objects to be controlled include field devices that measure physical quantities and also control objects to be controlled. The field device may be a combination of a positioner and a flow control valve, a flow control valve alone, a pump, or the like.

[Scope of the present invention]
Although the present invention has been described above with reference to the embodiments and modifications, the present invention is not limited to the embodiments and modifications described above. For example, the present invention includes various modifications to the above-described embodiments and modifications that can be understood by those skilled in the art within the scope of the technical idea of the present invention. The configurations listed in the above embodiments and modified examples can be combined as appropriate within a consistent range.

DESCRIPTION OF SYMBOLS 10... Field device, 11... Piping part, 12... Sensor, 13... Operating part, 14... Display part, 15... Control circuit, 20... Field device, 21... Feedback lever, 22... Operating part, 23... Display part, 24 ...Control circuit, 30...Flow rate control valve, 31...Actuator, 32...Valve stem, 32A...Pin, 33...Valve body, 34...Piping part, 90...Seal, P...Pictogram, P1-P3...Frame, P11-P16 , P21, P41-44...Picture symbol, P31-P32...Mark, Q...Pictogram, Q1...Frame, Q11, Q21-Q24, Q31-Q33, Q41, Q51...Picture symbol.

Claims (9)

A field device that measures a physical quantity to be measured or controls a controlled object,
comprising a display unit that displays a single pictogram representing both the device type of the field device and the measurement target or control target of the field device;
field equipment. The pictogram further represents a system to which the field device belongs according to its usage.
The field device according to claim 1. The pictogram further represents a usage environment of the field device,
The field device according to claim 1 or 2. The pictogram includes a graphic symbol representing the device type and the measurement target or the control target,
The usage environment is represented by the background color of the graphic symbol,
The field device according to claim 3. The display unit is a display, and displays the pictogram as an image,
further comprising a control circuit that sets the pictogram displayed on the display unit,
The field device according to any one of claims 2 to 4. The pictogram includes a mark indicating the orientation of the pictogram.
The field device according to any one of claims 1 to 5. the pictogram further represents the operating principle of the field device;
The field device according to any one of claims 1 to 6. the pictogram further represents an accessory of the field device;
The field device according to any one of claims 1 to 7. A field device display provided on a field device that measures a physical quantity or controls a controlled object,
A display for a field device, wherein a single pictogram representing both the device type of the field device and the measurement target or control target of the field device is expressed by at least one of printing and engraving.

Images