CN100526824C - Measuring apparatus, measuring system and operation method thereof - Google Patents
Measuring apparatus, measuring system and operation method thereof Download PDFInfo
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- CN100526824C CN100526824C CNB2004100686879A CN200410068687A CN100526824C CN 100526824 C CN100526824 C CN 100526824C CN B2004100686879 A CNB2004100686879 A CN B2004100686879A CN 200410068687 A CN200410068687 A CN 200410068687A CN 100526824 C CN100526824 C CN 100526824C
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Abstract
This invention refers to pressure measurement equipment with a controller for controlling the operation and/or data process, a sensor for measuring a variable and providing the first measurement data, an output interface for outputting said measured data.
Description
Technical field
The present invention relates to a kind of measuring equipment that is used for gaging pressure, a kind of measuring system with at least two such measuring equipments reaches a kind of be used to the operate such measuring equipment and the method for measuring system.
Background technology
In using, a large amount of technology all must measure differential pressure.Usually known differential pressure measurement equipment has a pressure transducer.This pressure transducer has two pressure and separates diaphragm, and these two diaphragms are spaced from each other and all are positioned on the transmission line.In the space of pressure equilibrium medium between two Separation membranes.The position that deviates from this pressure equilibrium medium in Separation membrane one side is an independently space, and wherein first pressure is preponderated in the first Separation membrane side, and second pressure is preponderated in the second Separation membrane side.In addition, this differential pressure measurement equipment has integrated board-like capacitor, and its electric capacity depends on dominant pressure.Capacitance to this board-like capacitor carries out the electric capacity valuation, and by measuring the circuit differential, it is current signal in 4 to the 20mA scopes as codomain that corresponding pressure is converted to one.
This well-formed's embodiment can measure the differential pressure of the ducted gas that for example links to each other with this differential pressure measurement equipment.Measurement with liquid of precipitated solid need be provided with a capillary pipeline in each differential pressure measurement equipment, block to avoid the transmission line zone.
Such embodiment needs more complicated design and more cost.When the differential pressure between the top cover of the bottom of measuring a container and container when determining to be superimposed with the filling grade of pressure, ever-increasing kapillary has also caused hydrostatic column, thereby produces measuring error.
Another known differential pressure measurement apparatus embodiments comprises the standard pressure instrumentataion of two routines, and this equipment has the sensor of positive embedded installation, and each sensor has the current output terminal that is used to export measurement data.This measurement data transfers to a discrete electronic evaluation, obtains difference between current therein.At this moment, the difference between the current signal of the current signal of first pressure instrumentataion and second pressure instrumentataion obtains by a mimic channel or a microprocessor.Therefore this configuration does not need capillary pipeline, has eliminated otherwise the measuring error that can produce.But the shortcoming of existence is owing to two unit measuring equipments of needs and an additional assessment apparatus that is connected to electronic evaluation wherein, thereby causes installation very complicated.Providing independently, assessment apparatus has also caused extra cost.
Summary of the invention
The purpose of this invention is to provide a kind of measuring equipment that is used for gaging pressure that can handle various measurement data, especially a kind of measuring system that obtains differential pressure with simple device.A kind of method of operating such measuring equipment or such measuring system is provided with also having advantage.
This purpose is by following measuring equipment, measuring system and the method that is used to operate such measuring equipment and measuring system realizes.
Be used for the measuring equipment of gaging pressure, have controller, be used to control the operation of this measuring equipment and/or handle measurement data; Sensor is used to measure a variable, so that first measurement data to be provided; Output interface is used to export this first measurement data; Wherein, this measuring equipment has a communication interface that communicates with another one second measuring equipment, described second measuring equipment has another sensor, be used for measurand, so that second measurement data to be provided, and when connecting second measuring equipment or second measuring equipment by communication interface and be activated, this measuring equipment is designed to receive this second measurement data, Combined Treatment first and second measurement data, and export the measurement data of this Combined Treatment.
Measuring system, have at least two measuring equipments that independently are used for gaging pressure, each measuring equipment is respectively applied for measurand, wherein at least one measuring equipment designs according to above-mentioned measuring equipment, and wherein two measuring equipments, promptly first measuring equipment and second measuring equipment are connected to each other by communication interface, to transmit measurement data at least.
Operate the method for above-mentioned measuring system and/or above-mentioned measuring equipment, wherein in first measuring equipment, obtain and provide first measurement data, and first measurement data is exported from this first measuring equipment by an output interface, wherein, second measurement data of second measuring equipment is received by first measuring equipment, first measurement data that is obtained and second measurement data that receives in first measuring equipment by Combined Treatment, and when receiving second measurement data and Combined Treatment first and second measurement data, be output by output interface by the measurement data of the first measuring equipment Combined Treatment.
A special preferred pressure instrumentataion has controller, is used to control the operation of this pressure instrumentataion; Output interface is used to export measuring equipment; And sensor, be used to measure a physical descriptor as first measurement data.In this, the function of this pressure instrumentataion is the measuring equipment as a standard, in order to determine a force value by this sensor, wherein is output a corresponding signal by this output interface.In order to determine differential pressure, this pressure instrumentataion has an interface of communicating by letter with the second other measuring equipment, and the assembling of this second measuring equipment is identical with first pressure instrumentataion the most favourable.Especially, this second measuring equipment also has a controller, and an output interface independently is used to export independently sensor of measurement data and, be used to measure a physical descriptor and with it as second measurement data, and communication interface.These two pressure instrumentataions link to each other by this communication interface, to carry out two communications between pressure instrumentataion.Except that the transmission measurement data, preferably also at two pressure instrumentataions especially exchanging control data between controller at them.For this measurement data of Combined Treatment, particularly obtain differential pressure, one in these two pressure instrumentataions is passed through this communication interface and sends measurement data to another pressure instrumentataion.The pressure instrumentataion that receives or its controller start the reception of measurement data and receive and by the Combined Treatment of the measurement data of its oneself sensor record, and the result of Combined Treatment is used as the combined measurement data and is output afterwards.The measurement data that receives except the Combined Treatment of controller itself and the ability of the measurement data of self, this controller can also activate a corresponding overhead data processor.
Therefore, a corresponding measuring system comprises the pressure instrumentataion of at least two physical separation, be used to measure each physical descriptor, wherein these two measuring equipments are connected to each other by a communication interface, and this interface is used to transmit the measurement data at least of a pressure instrumentataion to another pressure instrumentataion.The pressure instrumentataion that receives this measurement data is designed to handle this measurement data that receives and own measurement data measured own accordingly, especially for determining and exporting a differential pressure value.
Other favourable embodiments are described in the dependent claims.
When this pressure instrumentataion is the pressure instrumentataion of a standard, and by the data of its output interface output by the sensor measurement of oneself, and when connecting one second pressure instrumentataion and when this second pressure instrumentataion receives second measurement data, obtain the differential pressure of this first and second measurement data, and export this differential pressure by its output interface.Advantageously, this pressure instrumentataion is when connecting one second pressure instrumentataion, and except the measurement data of Combined Treatment, promptly differential pressure data particularly can also be exported its own measurement data, and necessity, can also export the measurement data of reception.This controller preferably has a program, be used for detecting automatically the connection of second measuring equipment, to switch to second operator scheme from first operator scheme automatically, wherein in first operator scheme by its oneself pressure of sensor measurement and export corresponding measurement data, in second operator scheme, produce differential pressure data, and this differential pressure data that is provided for substituting or being attached on the own measurement data is exported.
This output interface be preferably designed as transmission by one independently sensor measurement measurement data and/or transmit the measurement data of Combined Treatment.At this moment, this output interface can be designed to a unit interface, is independent of this communication interface.For example, this makes that independently the measurement data of the simulation in the measurement data of the measurement data of sensor or Combined Treatment can be by this communication interface output from one.And on the other hand, the measurement data of numeral and, necessary, control data also can be by this communication interface transmission.Also output interface can be designed to the configuration of an element of communication interface.Under such configuration mode, this communication interface is used for carrying out data communication between two measuring equipments when connecting one second measuring equipment.This communication interface also is being used to export as unit measuring equipment run duration by the measurement data of sensor measurement independently simultaneously.At this moment, that this communication interface can be designed to simulate or digital, this depends on preferred predetermined the application.
In an embodiment who preferably is different from other, this pressure instrumentataion comprises a controller, microprocessor particularly, be used to handle measurement data and the data that receive, except the basic operation of controlling this measuring equipment, this measuring equipment also has an independently measurement processor, and particularly a subtraction device is used to handle data and the measurement data that receives by the sensor measurement of himself.Difference between this controller and this measurement processor is favourable, especially during the simulated operation of the digit manipulation of this controller and this measurement processor.
In simple embodiment, communication interface can comprise that a simple cable that transmits the analogue measurement data connects.But this connection interface of preferably communicating by letter comprises the bus system of a standard, and for this reason, each of this measuring equipment has the interfacing equipment of a corresponding outfit.Except interface, can also use based on wireless interface here based on cable.
In the measuring system that is made of two measuring equipments that interconnect by communication interface, measuring equipment or controller wherein are suitable to main equipment, and another measuring equipment is as slave.Preferably also carry out the Combined Treatment of measurement data as this measuring equipment of main equipment.Take in theory two identical measuring equipments of main equipment or slave unit except using, also can use the measuring equipment of standard to come to send the measurement data that has write down to a specific measuring equipment measurement data that this specific measuring equipment processing receives and the measurement data of separate records by communication interface.
The advantage of this measuring equipment is that it has display unit, is used to show the value that himself sensor is measured during single-set operation.When this measuring equipment connects by communication interface, measurement data that this measuring equipment Combined Treatment receives and the own data of measuring, and on this display unit to substitute or the modes of the data of additional oneself measurement show the data of this processing.As during the ducted pressure instrumentataion of an arbitrary end of wave filter, thus the main flow voltage of the display of a measuring equipment in can display pipes, and the display of another measuring equipment shows differential pressure.Particularly when two measuring equipments were very close to each other, this had been avoided providing an independently demand of the common measurement data of handling of display demonstration.
Description of drawings
Below in conjunction with accompanying drawing an exemplary embodiment is described in more detail.
Fig. 1 is an exemplary measurement system with two by the pressure instrumentataion of a communication interface interconnection.
Fig. 2 is the system that does not have bidirectional communication link between two measuring equipments.
Embodiment
Fig. 1 represents an exemplary measuring system, and this system has two measuring equipment M1, M2, and these two equipment all link to each other with pipeline L.Medium G such as liquid or gas flow by pipeline.This medium G, i.e. liquid or solid, the pipeline of flowing through.The medium G filter apparatus F that flows through, this filter apparatus and pipeline L constitute one.In such system, typical, first pressure p 1 is preponderated in the inflow side of pipeline L, and greater than second pressure p 2 of the outflow side of this filter apparatus.Shown in exemplary embodiment in, obtained a pressure differential deltap p2.0Pa by this filter apparatus F from exemplary first pressure p, 1 24.0Pa and second pressure p, 2 22.0Pa.When this filter apparatus F when from medium G, leaching increasing particle after a while and taking place to block, it is big that this pressure differential deltap p becomes.Therefore, this pressure differential deltap p is that a filter apparatus F is necessary the indicator that keeps.
The first measuring equipment M1 has a first sensor S1, is arranged on the inflow side of pipeline L, is used for detecting and measuring first pressure p 1.The second measuring equipment M2 also has a sensor S2, is arranged on the outflow side of pipeline L, is used to measure second pressure p 2.
Two measuring equipment M1 and M2 all have a controller C, and promptly a microprocessor is used to control this measuring equipment M1 and M2.Simultaneously, this controller C can come the initialization assignment and handles according to the measurement data I1 that is provided by sensor S1 and S2 and I2.
Measurement data I1 that is provided by sensor S1 and S2 and I2 be aanalogvoltage or current signal preferably.But, also can use the sensor S1 and the S2 that have been converted to digital signal.This measurement data I1 and I2 directly or by controller C are sent to an output interface IA1, IA2; D1, D2.For example, best output interface IA1, IA2 are used for numeral or preferably simulate the measurement data I1 of the current value in the output 4-20mA scope, I2.Also can export continuous measurement data signals, or the measured data values of series of discrete.Additional or replacement, this output interface can be by a display D1, and D2 constitutes, and shows this measurement data in visual mode.
In addition, this measuring equipment M1, M2 have one as shown in the figure with the communication interface ICI1 of two measuring equipment M1 and M2 interconnection, ICI2.This connection can be known based on cable or based on the form of wireless transmission link.That signal of communication can be simulated or digital form is transmitted, and this depends on selected interface shape.Especially, communication interface I2C preferably adopts known to the I2C bus form of Philips at the early-stage development eighties.Communication interface ICI1, I2C, ICI2 are used for transmitting control data and measurement data I2.The transmission of control data is in order to make two measuring equipments synchronous, and they are harmonious aspect separately functional, and the measuring equipment M1 that establishes one of them is as basic equipment or main equipment, and another measuring equipment M2 is as second or slave.Accordingly, preferably bus I2C is designed to carry out the transmitted in both directions of control signal.In principle, the transmitted in both directions of measurement data I1 and I2 also is fine.
According to alternative embodiment, a communication interface is used for from a measuring equipment M2 just enough to another measuring equipment M1 transmission measurement data I2.The output interface IA2 of one of them measuring equipment M2 can be used to replace an independently communication interface for this reason, and corresponding therein another measuring equipment M1 has at least one receives measurement data I2 as communication interface input interface as main equipment.In principle, each measuring equipment M1, M2 provide a signaling interface enough.
In a preferred embodiment, measuring equipment particularly the controller C of measuring equipment M1 comprise one automatically detect second and initiatively measuring equipment M2 be connected to the program of communication interface ICI1.At this moment, controller C determines the first measuring equipment M1 as main equipment, and the second measuring equipment M2 is as slave unit.Preferably by communication interface ICI1, I2C, ICI2 pass to second measuring equipment to this information, and such second measuring equipment just needn't be as main equipment work.
Which is determined by manner known in the art as main equipment among measuring equipment M1 and the M2.Especially, measuring equipment M1, M2 can determine therein.
In a special preferred embodiment, main equipment i.e. the first measuring equipment M1, and Combined Treatment is by communication interface ICI1, I2C together, ICI2, the first measurement data I1 that provides by sensor S1 independently and the second measuring equipment M2 receive the second measurement data I2.Under the situation of a pressure instrumentataion system, the Combined Treatment of the first and second measurement data I1 and I2 preferably includes subtraction process.This subtraction obtains measurement data difference Δ I=I1-I2, and it represents differential pressure Δ p=p1-p2.
In a simple embodiment, the second measurement data I2 is exported by output interface IA2 by the second measuring equipment M2, and shows on display D2.By contrast, the first measuring equipment M1 is poor by its output interface IAI output measurement data, and shows the poor Δ I of this measurement data on display D1.When described pipeline L with filter apparatus F is monitored, two display D2 and D1 can be used for easily reading on the one hand the force value I2 of second pressure p 2 of the outflow part of pipeline L, read the difference DELTA I by the pressure differential Δ p of this filter apparatus F on the other hand.In order to read or the purpose of remote transmission, these two values also can obtain by output interface IA2 and IA1 and/or by communication interface ICI1 and ICI2.
In the embodiment in figure 1, the pressure instrumentataion of two standards is connected to each other, as the unit pressure instrumentataion that does not have corresponding communication link I2C, each equipment all provides the force value p1 that measures by independently sensor S2 and S1 and p2 as measurement data I1 and I2, and by output interface IA1 and IA2 and/or display D1 and D2 output.When two measuring equipment M1 are connected by communication interface I2C with M2, switch to master device functionality under the help of the suitable control program of one of them measuring equipment in controller C, another measuring equipment M2 switches to the slave function simultaneously.This measuring equipment M1 with master device functionality automatically calculates the measurement data difference Δ I between the measurement data I2 that receives from measurement data I1 independently with from another measuring equipment M2, exports then and/or shows that described measurement data is poor.After finishing communication linkage by communication interface I2C, two measuring equipment M1 and the M2 particularly first measuring equipment M1 switch the basic function of apparatus for returning-back of bills measuring equipment.
Fig. 1 has drawn these components identical in fact with the form of 26S Proteasome Structure and Function, Fig. 2 represents another embodiment, wherein have only an equipment M1 in two measuring equipments to have the specific function that comprises Combined Treatment measurement data I1 and I2, and another measuring equipment M2 is the measuring equipment of a standard, the measurement data I2 that it has got by a suitable output interface IA2 output.The first measuring equipment M1 with the corresponding measurement data of Combined Treatment has shown an interface ICI1, is used to receive the second measurement data I2 of the second measuring equipment M2.This situation may be particularly related to the input and output interface of a particular communication interface ICI1 or a merging, is used to receive the second outside measurement data I2 and export the data of himself, particularly measurement data I1 of himself and differential pressure data Δ I.
In an illustrated embodiment, first measuring equipment has an amplifying display D1, shows except that the Combined Treatment measurement data Δ I=I1-I2 self first measurement data D1.Nature, first measuring equipment also can have a demonstration that replaces or only show the display of measurement data difference.Also can show the second measurement data I2 that receives.Only export and show a kind of measurement data or handle after measurement data or merge the various measurement data of output and handle after measurement data also can be applied to this first embodiment naturally.
Has an independently electronic evaluation and the measuring system that do not have a special additional assessment apparatus also is fine.Also needn't between the sensor of two measuring equipments, use capillary pipeline, thereby may reduce measuring error and a worthwhile design.
The interface here can provide the interface of a merging or interface independently.Particularly, the electric current output that the twisted-pair feeder form can be provided on the one hand with export direct measurement data I1 and I2 or handle after measurement data Δ I, also can provide a digital interface as communication interface I2C on the other hand.
When having similar design or providing the additional measuring equipment of suitable data to be connected to this bus interface I2C for one, integrated program detects automatically, and automatically switches to program schema and come Combined Treatment intrinsic and measurement data I1 that receive and I2.Except automaticallying switch, display also can be asked outside the switching by the business personnel.
When connecting identical measuring equipment M1 of two designs and M2, for example the integrated program in first measuring equipment determines that measuring equipment M1 is as main equipment and carry out subtraction process.The digital value that deducts second pressure P 2 or the second measurement data I2 according to the digital value corresponding to first pressure p 1 or the first measurement data I1 calculates corresponding difference, and the electric current Δ I that is proportional to differential pressure Δ p accordingly shows by output interface IA1 output and/or by display D1.The integrated program of second measuring equipment is determined measuring equipment M2 as slave, and calculates and provide the digital value i2 of the second measurement data I2, by communication interface I2C it is transferred to the first measuring equipment M1.In addition, produce the electric current I 2 that is proportional to the second measurement data I2, and show by output interface IA2 output and/or by display D2.
Shown in measuring system in, the differential pressure of measuring is in order to monitor filter apparatus F.Ever-increasing differential pressure by filter apparatus F shows that the pollution of this filter apparatus F is more and more serious.This measuring system also can be used for other application systems.For example, differential pressure measurement can be used for finding out the filling extent in the container of the air pressure with stack.Be used for determining the filling extent of container by first pressure of first pressure instrumentataion acquisition with by the difference between second pressure of second pressure instrumentataion M2 acquisition, and, utilize a proportional current value to export this difference by output interface IA1.This measured value can be displayed on the optional display, perhaps directly with the form of corresponding force value, current value, perhaps with the form of given percentage difference.
Claims (18)
1, the measuring equipment (M1 that is used for gaging pressure; M2), have
Controller (C) is used to control this measuring equipment (M1; M2) operation and/or processing measurement data;
Sensor (S1) is used to measure a variable (p1), so that first measurement data (I1) to be provided;
Output interface is used to export this first measurement data (I1);
It is characterized in that,
This measuring equipment (M1) has a communication interface (I2C1 who communicates with another one second measuring equipment (M2), I2C), described second measuring equipment (M2) has another sensor (S2), is used to measure another variable (p2), so that second measurement data (I2) to be provided, and
When (I2C1, I2C I2C2) connect second measuring equipment or second measuring equipment (M2) when being activated, and this measuring equipment (M1) is designed to receive this second measurement data (I2 by communication interface; I2), Combined Treatment first and second measurement data (I1, I2; I2; And the measurement data (Δ I) of output after the Combined Treatment Δ I=I1-I2).
2, measuring equipment (M1 as claimed in claim 1; M2), wherein this controller (C) is designed to when the connection of second measuring equipment (M2) is activated, the measurement data (Δ I) after the control Combined Treatment and the output of first measurement data (I1).
3, measuring equipment (M1 as claimed in claim 1 or 2; M2), wherein this controller (C) is designed to that connection when second measuring equipment does not exist or when not being activated, control the output of first measurement data (I1).
4, measuring equipment (M1 as claimed in claim 1 or 2; M2), wherein this controller (C) is designed to detect automatically the connection or the activation of second measuring equipment (M2).
5, measuring equipment (M1 as claimed in claim 1 or 2; M2), wherein output interface is designed to physics and exports the first and second measurement data (I1; I2) and/or the measurement data after the Combined Treatment.
6, measuring equipment (M1 as claimed in claim 1 or 2; M2), wherein output interface is designed to communication interface (ICI1, element ICI2).
7, measuring equipment (M1 as claimed in claim 1 or 2; M2), wherein output interface be designed to be independent of communication interface (ICI1, ICI2).
8, measuring equipment (M1 as claimed in claim 1 or 2; M2), wherein first and second measurement data (I1, the output of output interface I2) and the measurement data after the Combined Treatment (Δ I) is designed to simulated data output.
9, measuring equipment (M1 as claimed in claim 1 or 2; M2), wherein first and second measurement data (I1, the output of output interface I2) and the measurement data after the Combined Treatment (Δ I) is designed to numerical data output.
10, measuring equipment (M1 as claimed in claim 9; M2), wherein first and second measurement data (I1, the output of output interface I2) and the measurement data after the Combined Treatment (Δ I) is designed to the I2C bus.
11, measuring equipment (M1 as claimed in claim 1 or 2; M2), its middle controller (C) has a measurement processor, be used to handle first and second measurement data (I1, I2) and the measurement data (Δ I) of Combined Treatment is provided.
12, measuring equipment (M1 as claimed in claim 11; M2), wherein said measurement processor is a subtraction device.
13, measuring system, have at least two measuring equipment (M1 that independently are used for gaging pressure, M2), each measuring equipment is respectively applied for measurand (p1, p2), wherein at least one measuring equipment (M1) designs according to the described measuring equipment of one of front claim, and two measuring equipment (M1 wherein, M2), promptly first measuring equipment (M1) and second measuring equipment (M2) are connected to each other by communication interface (I2C), to transmit the first and second measurement data (I1; I2) at least one in.
14, measuring system as claimed in claim 13, wherein first measuring equipment (M1) comes to communicate by communication interface (I2C) as main equipment, and (second measuring equipment (M2) is as slave for I1, Combined Treatment I2) to distribute measurement data.
15, measuring system as claimed in claim 14, wherein the controller (C) of first measuring equipment (M1) is as main equipment.
16, as claim 14 or 15 described measuring systems, wherein the controller (C) of second measuring equipment (M2) is as slave.
17. as claim 13 or 14 described measuring systems, each measuring equipment (M1 wherein, M2) be respectively arranged with a display (D1, D2) as output interface, and in first measuring equipment (M1) to measurement data (I1, I2) carry out during the Combined Treatment, the measurement data of this Combined Treatment (Δ I) is presented on the display (D1) of first measuring equipment (M1), and second measurement data (I2) is presented on the display (D2) of second measuring equipment (M2).
18. operational rights require 13-17 wherein each described measuring system and/or operational rights require the wherein method of each described measuring equipment of 1-12, wherein
In first measuring equipment (M1), obtain and provide first measurement data (I1), and
First measurement data (I1) is exported from this first measuring equipment (M1) by an output interface,
It is characterized in that,
Second measurement data of second measuring equipment (M2) (I2 i2) is received by first measuring equipment (M1),
First measurement data (I1) that is obtained and second measurement data that receives (I2, i2) in first measuring equipment (M1) by Combined Treatment, and
(I2 i2) and during Combined Treatment first and second measurement data, is output by output interface by the measurement data (Δ I) of the first measuring equipment Combined Treatment when receiving second measurement data.
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| CNB2004100686879A CN100526824C (en) | 2004-09-02 | 2004-09-02 | Measuring apparatus, measuring system and operation method thereof |
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| CNB2004100686879A CN100526824C (en) | 2004-09-02 | 2004-09-02 | Measuring apparatus, measuring system and operation method thereof |
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| FR3026182B1 (en) * | 2014-09-19 | 2018-04-13 | Valeo Systemes De Controle Moteur | DEVICE FOR MEASURING DIFFERENTIAL PRESSURE |
| CN105740182A (en) * | 2014-12-12 | 2016-07-06 | 深圳富泰宏精密工业有限公司 | System and method for preventing sensor from losing efficacy |
| CN107532963A (en) * | 2015-06-02 | 2018-01-02 | 巴尔克株式会社 | Measuring apparatus with output signal adjustment function |
| JP2019200067A (en) * | 2018-05-14 | 2019-11-21 | 横河電機株式会社 | Measuring system, measuring method, and pressure measuring device |
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