JP2003194702A - Recording medium, displaying program and device for measuring particle size distribution - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for measuring particle size distribution which can rapidly carrying out setting work by improving the operability in the case of utilizing a help function. <P>SOLUTION: The setting screen 25c of the displaying device is provided with a plurality of setting items 42 necessary to measure the particle size distribution, and with help buttons 43 corresponding to these setting items 42, respectively. When the help button 43 is operated, the change into a guiding screen is carried out, and the guidance relative to the setting item corresponding to the operated help button is displayed. In addition, when a specific term in the guidance is selected, the change into a reference screen is carried out, and information relative to the content of term is displayed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a particle size distribution measuring device for measuring the particle size distribution of various samples.

[0002]

2. Description of the Related Art Particle size distribution measuring devices are widely used for quality control in various fields such as chemical products, powder coatings, chemicals, cosmetics and processed foods. Such a particle size distribution measuring device is composed of, for example, a light scattering type particle size distribution meter and a personal computer connected to the particle size distribution meter. The light scattering type particle size distribution analyzer is a device for measuring a particle size distribution based on detecting scattered light scattered by particles when a particle of a sample is irradiated with laser light. On the monitor screen of the personal computer, a graph of particle size distribution, numerical values, etc. are displayed based on the result measured by the particle size distribution meter. Further, various settings necessary for measuring the particle size distribution are made on the monitor screen.

By the way, the operators who operate the particle size distribution measuring apparatus are not limited to skilled persons who are familiar with the measurement of particle size distribution, but also beginners who have little knowledge. For such beginners, when making various settings on the screen of the monitor, it is naturally unclear about the setting items. Therefore, in order to deal with such an unclear point, a help menu is provided on the setting screen of the monitor. When this help menu is selected, a help screen is displayed, and the operator selects an index on this help screen or searches for a keyword to extract guidance related to the setting item. Then, the extracted guidance is viewed, and the setting operation is performed according to the guidance. In this way, even a beginner who is unfamiliar can use the help function to operate the measuring device by himself / herself to some extent.

[0004]

However, in the conventional particle size distribution measuring apparatus, since it is necessary to select the index or search by the keyword as described above after selecting the help menu, the operation becomes very complicated. However, there is a problem that setting work takes time and effort.

On the other hand, by clicking the help button at the corner of the setting screen with the mouse to move to the required help display item and clicking again at that position,
Displaying a description of that item has already been adopted in personal computers. However, even in this case, the operation of clicking the help button twice and the operation of moving the help button are necessary, and the person who is unfamiliar with the operation may not be able to perform the operation well and may have to try again.

Further, when the guidance obtained by the help function contains technical terms and the like and the meaning thereof is to be known, conventionally, the manual of the product was referred to or the term dictionary was searched. , This was also a very time-consuming task and was inefficient.

The present invention is intended to solve the above problems, and its object is to improve the operability when using the help function and to measure the particle size distribution so that a quick setting operation can be performed. To provide a device.

[0008]

A particle size distribution measuring apparatus according to the present invention is based on setting means (for example, a personal computer) for making settings necessary for measuring the particle size distribution, and contents set by this setting means. A device equipped with a measuring means for measuring the particle size distribution (for example, a light scattering type particle size distribution meter), in which a setting screen, a guide screen and a reference screen are displayed on the display device of the setting means. There is. On the setting screen, setting items necessary for measuring the particle size distribution and link means (for example, a help button) for shifting to the guidance screen related to the setting items are displayed.
Guidance relating to the setting item is displayed on the guidance screen based on the operation of the linking means. On the reference screen, based on the selection of a specific term in the guidance displayed on the guidance screen, information regarding the content of the term is displayed.

By doing so, when there is an unknown setting item, the guidance related to the setting item is immediately displayed only by operating the link means. Therefore, it becomes unnecessary to perform index selection, keyword search, movement of the help button, etc. on the help screen, which has been conventionally performed. In addition, if you find a term in the guidance that you want to know more about, you can select the term and the information about the term will be displayed. There is no need to search for.
Thus, in the present invention, when the help function is used, necessary information is immediately obtained, so that the operability is remarkably improved, and as a result, the setting operation can be performed quickly. If there are a plurality of setting items on the setting screen, the link means may be displayed corresponding to each setting item.

In the present invention, when a light scattering type particle size distribution meter is used as a measuring device, the setting screen includes a refractive index as a setting item, and based on the fact that the link means corresponding to the refractive index is operated, Guidance regarding the refractive index is displayed on the guide screen. Here, if the guidance on the guidance screen includes a refractive index file as a term, list data representing the refractive index for each component of the sample is displayed on the reference screen based on the selection of the term. In this case, if there is a relationship between the file name of the refractive index file and the numerical value of the refractive index in the list data, even if the list data is not displayed, only the file name of the refractive index file Can be selected. Further, in the present invention,
By converting the instruction manual of the measuring device into electronic data, it is possible to display the guidance related to the setting items and the information regarding the content of the term based on the electronic data.

The display program of the present invention displays setting items required for particle size distribution measurement and link means for shifting to a guidance screen related to the setting items on the setting screen, and guidance related to the setting items. Is a program for displaying information on the guidance screen and information regarding the content of a specific term in the guidance on the reference screen. A recording medium of the present invention stores the above display program. As a recording medium, a semiconductor memory (RO
In addition to M) and a hard disk, various recording media such as a general-purpose magnetic disk, a CD-ROM, a CD-R, a CD-RW, and a memory card can be used.

[0012]

1 is a diagram showing the configuration of a particle size distribution measuring apparatus according to the present invention. In FIG. 1, a particle size distribution measuring apparatus A includes a particle size distribution meter 1, a PC (personal computer) 2 connected to the particle size distribution meter 1, and a printer 3 connected to the PC 2. The particle size distribution meter 1 constitutes the measuring means of the present invention, and the PC 2 constitutes the setting means of the present invention.

The particle size distribution meter 1 is a light scattering type particle size distribution meter, and includes a circulation system including a motor 4, an ultrasonic oscillator 5, a circulation pump 6, an ultrasonic bath 7 and a drain valve 8, a semiconductor laser 9 and a projection laser. The optical system includes an optical lens 10, a flow cell 11, a wide-angle scattered light detection sensor 12, a forward scattered light detection sensor 13, a signal processing circuit 14, and a CPU 15. Reference numeral 16 is an automatic injection pump attached as an option, and 17 is a dispersion medium tank.

FIG. 2 is a flow chart showing the procedure for measuring the particle size distribution using the particle size distribution measuring apparatus A of FIG. First, the settings necessary for measuring the particle size distribution are made on the PC 2 (step S1). Details of this setting will be described later. When the setting is completed, next, the sample is put into the ultrasonic bath 7 (step S2). When the automatic injection pump 16 is attached as in FIG. 1, the dispersion medium in the dispersion medium tank 17 is automatically supplied from the pump 16 to the ultrasonic bath 7. After loading the sample, the ultrasonic oscillator 5 is driven to vibrate the ultrasonic bath 7, and the motor 4
At step S3, the circulation pump 6 is driven to circulate the sample (step S3). During this circulation process, the particles of the sample are irradiated with laser light in the flow cell 11, and the signal processing circuit 14 and C are supplied based on the intensity of the scattered light received by the sensors 12 and 13.
The data necessary for calculating the particle size distribution is measured by the PU 15 (step S4). The measured data is sent to the PC2, and the arithmetic processing based on the measured data is performed in the PC2 (step S5). The particle size distribution calculated as a result of the calculation is displayed on the screen of the monitor of the PC 2 (step S
6). In addition, the printer 3 prints the measurement result if necessary.

FIG. 3 is a diagram showing the principle of particle size measurement by a light scattering type particle size distribution meter. When the particle P of the sample in the flow cell 11 is irradiated with the laser light having the wavelength of 650 nm from the semiconductor laser 9 through the light projecting lens 10, the laser light hits the particle P and is scattered, and the scattered light is detected by the wide-angle scattered light detecting sensor 12 and the front. The scattered light detection sensor 13 receives the light. The wide-angle scattered light detection sensor 12 is composed of a silicon photodiode, and the forward scattered light detection sensor 13 is composed of a ring-shaped 36-segment silicon photodiode array. If the particle size is large, the scattered light will be concentrated forward,
A large received light output Y is obtained from the forward scattered light detection sensor 13. On the other hand, when the particle diameter is smaller than the wavelength of the laser light, the scattered light is scattered in all directions, and the light reception output of the wide-angle scattered light detection sensor 12 increases. Therefore, the particle size distribution of the particles P can be calculated by detecting an electric signal corresponding to the intensity of scattered light obtained from each of the sensors 12 and 13.

FIG. 4 is a block diagram showing the hardware configuration of the PC 2. Reference numeral 21 is an input device including a keyboard and mouse, and 22 is an R storing various parameters and the like.
OM, 23 is a RAM for temporarily storing data, 24 is a CPU as a calculation means and a control means, 25 is a display device that constitutes a monitor, 26 is a storage device composed of a hard disk, and 27 is a particle size distribution measuring apparatus A. Is an external interface for The storage device 26 constitutes the storage means of the present invention.

FIG. 5 shows a display screen 25a on the display device 25 of the PC 2. The display screen 25a includes a menu display section 31 for displaying various menus, an operation section 32 for performing operations such as stopping the device and driving a circulation pump, a data display section 33 for displaying measurement data in graphs and numerical values, and prior to measurement. It is composed of an operation unit 34 for performing pretreatment operations such as optical axis adjustment, drainage, and air removal.

The menu display section 31 is provided with a setting button 35. By selecting the setting button 35, the mode is set to the setting mode, and the setting in step S1 of FIG. 2 is performed. In this setting, for example, system conditions, measurement conditions, and display conditions are set. As the system conditions, the circulation speed of the sample, the operating time of the ultrasonic oscillator, the intensity of ultrasonic waves, etc. are set. As the measurement conditions, the number of data acquisitions, the presence / absence of operation of the ultrasonic oscillator during measurement, and the like are set. The display conditions are: distribution form in frequency distribution, number of iterations, relative refractive index, particle size standard,
The graph form, presence / absence of integrated distribution graph in integrated distribution, integrated display type, style of graph, display graph axis, presence / absence of standard notation, etc. are set. The data thus set is stored in the RAM 23 or the storage device 26 (FIG. 4).
Is stored in a predetermined area of. FIG. 6 is a table showing an example of data stored in the RAM 23 or the storage device 26.

Next, details of the setting in step S1 of FIG. 2 will be described. In FIG. 5, when the setting button 35 of the menu display unit 31 is clicked with the mouse provided in the input device 21, the setting mode is set, and the display screen is switched to the setting type selection screen 25b as shown in FIG. On this screen 25b, one of the above-mentioned system conditions, measurement conditions, and display conditions to be set is selected. 41a is an OK button operated when setting is performed under the selected condition, and 41b is a cancel button operated when setting is not performed. Now, for example, when "display condition" is selected and the OK button 41a is clicked, the screen is switched to the display condition setting screen 25c as shown in FIG.

On the setting screen 25c, settings relating to frequency distribution, cumulative distribution, graph, etc. are made. FIG. 8 is a screen for setting the frequency distribution, and here, as the setting items 42, five setting items of distribution form, number of repetitions, relative refractive index, particle size reference, and graph form are displayed. Further, a help button 43 provided corresponding to each of these setting items 42 is displayed. The help button 43 is an example of the linking means in the present invention, the help button 43a corresponds to the distribution form, the help button 43b corresponds to the number of repetitions, the help button 43c corresponds to the relative refractive index, and the help button Reference numeral 43d corresponds to the particle diameter standard, and help button 43e corresponds to the graph form. 44 is a refractive index button for selecting a relative refractive index, and 45a is an OK button to be operated when all the settings are completed.
A button, 45b is a cancel button operated when canceling the setting.

When the operator makes a setting on the setting screen 25c, for example, if he / she is not sure about the setting of the relative refractive index, the help button 4 corresponding to the relative refractive index.
Click 3c with the mouse. Then, the screen is switched to the guide screen 25d as shown in FIG. On this guidance screen 25d, setting items corresponding to the help button 43c,
That is, guidance related to setting the relative refractive index is displayed. By looking at this guidance, the operator knows that he can select the relative refractive index by clicking the refractive index button 44 (FIG. 8) and opening the refractive index file. In addition, 48 is a return button for returning to the setting screen 25c of FIG.

Further, as shown in FIG. 9, specific terms such as the relative refractive index 46 and the refractive index file 47 appearing in the guidance are colored and underlined so that the mouse can be used with a mouse. It is selectable. If you are unsure of the meaning of these terms, click them with your mouse. Now, for example, when the relative refractive index 46 is clicked, the screen switches to the reference screen 25e as shown in FIG.
On this reference screen 25e, a commentary on the relative refractive index,
Related reference information is displayed. The operator can know the information regarding the relative refractive index by viewing this explanation. Reference numeral 49 is a return button for returning to the guide screen 25d in FIG. 9, and 50 is a return button for returning to the setting screen 25c in FIG.

When the refractive index file 47 is clicked in FIG. 9, the screen switches to the reference screen 25f as shown in FIG. On the reference screen 25f, list data showing the refractive index of each component of the sample is displayed. Here, Compound, Common Name,
Chemical formula (Symbol / Formula), absolute refractive index (RI: Refra
ctive Index) and each solvent (Water, IPA, Mineral O
The relative refractive index in il) is displayed. The operator
The details of the refractive index of each sample can be known by looking at this list data. Reference numeral 51 is a send button for displaying the list data of the next page, 52 is a return button for returning to the guide screen 25d in FIG. 9, and 53 is a return button for returning to the setting screen 25c in FIG.

As shown in the lower part of the guide screen 25d of FIG. 9, there is a relation between the file name of the refractive index file and the numerical values of the refractive index in the above list data. , For example, the first three digits of the file name are
If it is "19", it means that the value of the relative refractive index is 1.19. By doing so, an expert can select the refractive index only from the file name of the refractive index file without displaying the list data as shown in FIG.

As described above, in the present embodiment, the setting screen 2
Even if the setting item of 5c is unknown, the guidance related to the setting item can be immediately displayed by simply clicking the help button 43 corresponding to the setting item. Therefore, it is not necessary to perform index selection, keyword search, or double-clicking and moving the help button on the help screen as in the related art, and the information necessary for setting can be quickly obtained. In addition, even if an unknown term appears in the guidance, the explanation is displayed simply by selecting the term, so it is possible to save the trouble of checking the instruction manual or the terminology dictionary.

In the above embodiment, the help button 43a is associated with each of the plurality of setting items 42.
43e are provided, one setting item 42 may be provided, and in this case, a single help button is provided.
Further, in the above embodiment, the help button 43 is provided as a linking means to shift to the guidance screen 25d. However, in addition to this, for example, the color of each character of the setting item 42 is reversed, an underline is provided, etc. Then, by clicking the character of the setting item 42, the guidance screen 25d of FIG. 9 is displayed.
You can also move to. Alternatively, a box for inputting the setting item name may be displayed on the screen, and the guide screen 25d may be switched by inputting characters.

Further, by storing the electronic data of the instruction manual of the particle size distribution measuring apparatus A in the storage device 26 of the PC 2, the above-mentioned guidance, terminology, refractive index data list, etc. can be stored in the electronic data of the instruction manual. Can be displayed based on. This electronic data is the help button 43
The electronic manual can be browsed on the display device 25 of the PC 2 not only when is operated but also at any time. Further, the electronic data of the instruction manual is not limited to that stored in the storage device 26 in advance, and may be data recorded in a CD-ROM or the like. In this case, CD-R
An OM or the like is set in a disk drive (not shown) of the PC 2 each time, electronic data is read and stored in the storage device 26.

FIG. 12 is a flow chart showing the operation of the PC 2 in the setting mode. The computer program that is the basis of this flowchart is stored in the ROM 22 or the storage device 26. Therefore, RO
The M22 or the storage device 26 constitutes the recording medium of the present invention, but the recording medium is not limited to these.
Various computer-readable recording media as described above can be used. The CPU 24 reads the above program from the recording medium and executes the processing of FIG.

Next, according to the flow chart of FIG.
The procedure in the setting mode will be described. The CPU 24 monitors whether or not the setting type is selected on the setting type selection screen 25b of FIG. 7 (step S11), and when the cancel button 41b is operated and the setting type is not selected (step S11: NO). , End as it is. When the OK button 41a is operated to select the setting type (step S11: YES), the setting screen 25c of FIG. 8 is displayed on the display device 25 according to the type (step S12). Then, it is checked whether or not the setting on the setting screen 25c is completed (step S13), and if the setting is completed (step S13: YES), the process is ended. On the other hand, if the setting is not completed (step S13:
NO), and then it is determined whether or not the help button 43 has been pressed (step S14). If the help button 43 is not pressed (step S14: NO), step S13
Return to and wait for the completion of the setting on the setting screen 25c.

When the help button 43 is pressed (step S14: YES), the guidance of the setting item corresponding to the pressed help button is displayed on the guide screen 25d in FIG. 9 (step S15). Then, it is determined whether or not to return to the setting screen 25c, that is, whether or not the return button 48 is pressed (step S16), and if the return button 48 is pressed (step S16: YES), the process returns to step S12. The setting screen 25c of FIG. 8 is displayed. If the return button 48 is not pressed (step S16: NO), then it is determined whether or not the term included in the guidance on the guidance screen 25d is selected (step S17), and the term must be selected. For example, the process returns to step S16 and waits for the return button 48 on the guidance screen 25d to be pressed (step S17:
NO).

On the other hand, if a term is selected (step S1)
(7: YES), information about the content of the selected term is displayed on the reference screens 25e and 25f of FIGS. 10 and 11 (step S18). Then, it is determined whether or not to return to the guidance screen 25d, that is, whether or not the return buttons 49 and 52 are pressed (step S19), and if the return buttons 49 and 52 are pressed (step S19: YES), step S15
It returns to and displays the guide screen 25d of FIG. If the return buttons 49 and 52 are not pressed (step S19: N
O), next, it is determined whether or not to return to the setting screen 25c, that is, whether or not the return buttons 50 and 53 are pressed (step S20), and if the return buttons 50 and 53 are pressed (step S20: YES). ), And returns to step S12 to display the setting screen 25c of FIG. If the return buttons 50 and 53 are not pressed (step S20: NO), step S1
Return to 9 and return button 49, 52 to the guidance screen 25d
Wait for is pressed.

13 to 15 show other examples of screens,
FIG. 7 shows a screen when “system condition” is selected. 13 shows an example of a setting screen, FIG. 14 shows an example of a guide screen, and FIG. 15 shows an example of a reference screen. When the system condition is selected, the screen switches to the system condition setting screen 25g as shown in FIG. On the setting screen 25g, three setting items, that is, the circulation speed, the ultrasonic operation time, and the ultrasonic intensity are displayed as the setting items 61. Further, a help button 62 provided corresponding to each of these setting items 61 is displayed. The help button 62a corresponds to the circulation speed, the help button 62b corresponds to the ultrasonic operation time, and the help button 62c corresponds to the ultrasonic intensity. 63a is OK to operate when all settings are completed
A button 63b is a cancel button operated when canceling the setting. Also in this example, instead of the help button 62, various link means as described above can be used.

When the operator makes a setting on the setting screen 25g, for example, if he / she is not sure about the setting of the ultrasonic operation time, he / she clicks the corresponding help button 62b. Then, the screen is the guide screen 2 shown in FIG.
Switch to 5h. On this guidance screen 25h, a setting item corresponding to the help button 62b, that is, guidance related to the setting of the ultrasonic operation time is displayed. Reference numeral 65 is a return button for returning to the setting screen 25g of FIG.

In FIG. 14, when the content of the term 64 appearing in the guidance is unknown, the term 64 is clicked, and the screen is the reference screen 25 as shown in FIG.
Switch to i. On the reference screen 25i, explanations and reference information regarding the ultrasonic operation time are displayed. 67
a is a return button for returning to the guide screen 25h in FIG. 14,
67b is a return button for returning to the setting screen 25g of FIG.

On the reference screen 25i of FIG. 15, similarly to the guide screen 25h of FIG. 14, it is possible to select an underlined term 66. When this term is selected, explanation or reference information of the selected term is made. Is a new reference screen (not shown)
Is displayed in. In this way, by making the terms selectable on the reference screen, the reference screen can be displayed over a plurality of layers.

The present invention is not limited to the above-mentioned embodiment, and various other forms can be adopted. For example, in FIGS. 8 and 13, the help buttons 43a to 43e, 6 are displayed.
Although "HELP" is displayed on 2a to 62c, the linking means of the present invention may have a function of shifting to a guidance screen displaying guidance of setting items, and the display of "HELP" is not always required. It does not have to be marked with.

Further, in the above embodiment, the light scattering type particle size distribution measuring apparatus is described as an example, but the present invention can be applied to a particle size distribution measuring apparatus using a method other than the light scattering type, For example, as described in JP-A-2000-74816, a particle size distribution by a pore electrical resistance method utilizing the fact that the inter-electrode resistance changes depending on the volume of particles in the electrolytic solution passing through the tube pores. It can also be applied to a measuring device.

[0038]

According to the present invention, by operating the link means on the setting screen, the guidance related to the setting item is immediately displayed, and by selecting the term in the guidance, information on the term is displayed. Is displayed, the operability is improved, the information necessary for setting can be quickly obtained, and the setting work can be performed efficiently.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a particle size distribution measuring device according to the present invention.

FIG. 2 is a flowchart showing a procedure of particle size distribution measurement.

FIG. 3 is a diagram showing a principle of particle size measurement by a light scattering type particle size distribution meter.

FIG. 4 is a block diagram showing a hardware configuration of a PC.

FIG. 5 is a diagram showing a display screen on a display device of a PC.

FIG. 6 is a table showing an example of set data.

FIG. 7 is a diagram showing a setting type selection screen.

FIG. 8 is a diagram showing a setting screen.

FIG. 9 is a diagram showing a guide screen.

FIG. 10 is a diagram showing a reference screen.

FIG. 11 is a diagram showing another reference screen.

FIG. 12 is a flowchart showing the operation of the PC in the setting mode.

FIG. 13 is a diagram showing another example of a setting screen.

FIG. 14 is a diagram showing another example of a guide screen.

FIG. 15 is a diagram showing another example of the reference screen.

[Explanation of symbols]

A Particle size analyzer 1 Particle size distribution meter 2 PC (personal computer) 21 Input device 25 display 25c setting screen 25d guidance screen 25e Reference screen 25f reference screen 25g setting screen 25h guidance screen 25i reference screen 26 storage devices 42 setting items 43 Help button 46,47 terms 61 setting items 62 Help button 64,66 terms

Claims (9)

[Claims] 1. A setting means for making settings necessary for measuring the particle size distribution, and a measuring means for measuring the particle size distribution based on the contents set by the setting means, wherein the setting means is a setting item. In a particle size distribution measuring apparatus having a display device having a screen for displaying, and an input device for setting setting items on the screen, the display device can display a setting screen, a guidance screen, and a reference screen. In the setting screen, the setting items necessary for measuring the particle size distribution and the linking means for shifting to the guidance screen related to the setting items are displayed. Displays the guidance related to the setting item based on the operation of the link unit according to the operation of the input device, and the guidance displayed on the guidance screen on the reference screen. Based on the specific terms of is selected according to the operation of the input device, a particle size distribution measuring apparatus characterized by information about the contents of the terms in question appear. 2. The particle size distribution measuring apparatus according to claim 1, wherein a plurality of the setting items are displayed on the setting screen, and the link means is displayed corresponding to each of the setting items. The particle size distribution measuring apparatus, wherein on the guidance screen, guidance related to a setting item corresponding to the link means is displayed based on the operation of the link means according to the operation of the input device. 3. The particle size distribution measuring device according to claim 1 or 2, wherein the measuring device detects scattered light scattered by the particles when the particles of the sample are irradiated with laser light. A particle size distribution measuring device, characterized in that it is a light scattering type particle size distribution meter for measuring particle size distribution. 4. The particle size distribution measuring apparatus according to claim 3, wherein the setting screen includes a refractive index as a setting item, and the guidance regarding the refractive index is provided based on the operation of the link means corresponding to the refractive index. A particle size distribution measuring device characterized by being displayed on a guidance screen. 5. The particle size distribution measuring apparatus according to claim 4, wherein the guidance on the guide screen includes a refractive index file as a term, and the refractive index for each component of the sample is determined based on the selection of the term. A particle size distribution measuring device characterized in that the displayed list data is displayed on a reference screen. 6. The particle size distribution measuring device according to claim 5, wherein the file name of the refractive index file and the numerical value of the refractive index in the list data are associated with each other. apparatus. 7. The particle size distribution measuring apparatus according to any one of claims 1 to 6, further comprising storage means for storing an instruction manual of the measuring apparatus as electronic data, and guidance and terminology related to setting items. The information regarding the content of (1) is displayed based on the electronic data of the instruction manual stored in the storage means. 8. A display program for displaying a setting screen, a guide screen and a reference screen on the display device in a particle size distribution measuring device for measuring the particle size distribution based on the contents set on the setting screen of the display device. Then, a process of displaying a setting item necessary for measuring the particle size distribution on the setting screen and a linking unit for shifting to a guidance screen related to the setting item, and the linking unit is operated. On the basis of the above, a process of displaying guidance related to the setting item on the guidance screen, and based on selection of a specific term in the guidance, information on the content of the term is displayed on the reference screen. A display program that causes a computer to execute processing. 9. A computer-readable recording medium in which the display program according to claim 8 is stored.