Multi-station calibrating device for pressure transmitter

Abstract

The utility model relates to the technical field of pressure transmitter detection equipment, in particular to a multi-station calibrating device for a pressure transmitter, which is characterized by comprising a box body and a panel, a plurality of threaded stations are arranged on the panel, quick connectors are arranged on the threaded stations, and the quick connectors are generally matched with a pressure transmitter to be calibrated and a standard pressure gauge; the panel is also provided with a manual / automatic control knob, a station selection knob, an indicating lamp and a signal input interface; one side of the box body is provided with an air source interface, a signal output interface, a power interface and a delay control knob, and the air source interface is communicated with each thread station through a pressure pipeline in the box body; the signal input interface is connected with a corresponding to-be-detected pressure transmitter, and the signal output interface is connected with a terminal computer. The beneficial effects of the utility model are that: can accomplish the calibration of one or more pressure transmitters or pressure sensors at one time, have two functions of manual calibration and automatic calibration, improve the calibration efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure transmitter detection equipment technical field, concretely is a kind of pressure transmitter multistation calibrating device. BACKGROUND

[0002] Traditional detection pressure transmitter or pressure sensor is all using single station mode, i.e. only one pressure transmitter or pressure sensor can be detected each time. The utility model discloses a portable pressure transmitter test calibrating device, including the standard pressure transmitter of being detected with the pressure transmitter of being measured simultaneously the pressure of the same test point on the object to be tested is detected in real time, the two-way pressure signal of being detected in real time to the pressure transmitter of being measured and standard pressure transmitter is compared and analyzed and the relationship curve of two-way pressure signal with time change is obtained corresponding operation processor and the display of the relationship curve of two-way pressure signal with time change is synchronously and intuitively displayed with operation processor interface and the display is tested object, including the manifold that can detect the internal pressure in real time and the pressure pump that can provide variable pressure for manifold. The calibrating device mentioned in the document can detect multiple pressure transmitters or pressure sensors, but there is a single detection form problem, and it cannot meet the calibrating needs in various situations. SUMMARY

[0003] The utility model discloses a kind of pressure transmitter multistation calibrating device, overcome the deficiency of prior art, can simultaneously complete the calibrating of one or more pressure transmitter or pressure sensor, with manual calibration and automatic calibration switching function, easy to operate, improve detection efficiency, solve the problem of lower efficiency of existing calibrating equipment.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A pressure transmitter multi-station calibrating device, comprising a box body and a panel, the panel is provided with a plurality of threaded stations, the threaded stations are provided with quick connectors, the connecting ports of the quick connectors are matched with the connecting ends of the pressure transmitters to be detected and the standard pressure gauges in common, the quick connectors are external thread quick connectors or internal thread quick connectors, which are selected according to the connection types of the pressure transmitters; the panel is further provided with a hand / automatic control knob, a station selection knob, an indicator lamp and a signal input interface; one side of the box body is provided with an air source interface, a signal output interface, a power supply interface and a delay control knob, the air source interface is connected with the threaded stations in communication through pressure pipelines in the box body; the signal input interface is connected with the corresponding pressure transmitters to be detected through wiring; the box body is provided with a controller, a single-chip microcomputer in the controller is connected with a signal input and indicator lamp control circuit, a signal output circuit, a hand / automatic control circuit, a station selection circuit, a delay control circuit and a power supply circuit, the hand / automatic control circuit is connected with the hand / automatic control knob, the delay control circuit is connected with the delay control knob, and the station selection circuit is connected with the station selection knob; the power supply circuit is connected with the power supply interface, and the signal output interface is connected with a terminal computer through a cable.

[0006] Further, the power supply interface is connected with an external DC 24v power supply, and the model of the power supply circuit is an LM2596 switching voltage regulator.

[0007] Further, each threaded station is provided with a position indicator lamp for indicating whether the station is in detection and a signal input interface for receiving the signal of the pressure transmitter to be detected.

[0008] Further, the number of the threaded stations is six, which are arranged in a rectangular array.

[0009] Further, the signal output interface is any one of 4-20mA, 1-5V, 0-10V and 0-5V signal transmission forms.

[0010] Further, the pressure pipelines are connected by pipe joints made of engineering plastic pipes or metal pipes, or are formed by drilling a whole metal piece.

[0011] Further, the model of the single-chip microcomputer is ATmega8.

[0012] Compared with the prior art, the device has the following beneficial effects:

[0013] 1) By arranging a plurality of calibrating stations on the panel of the device, the calibration of one or more pressure transmitters or pressure sensors can be completed at the same time, the device has hand calibration and automatic calibration functions, is convenient to operate and has high automation degree.

[0014] 2) By setting hand / automatic control knob, station selection knob and delay control knob, various forms of verification can be carried out according to the specifications and types of the detected pressure transmitter or pressure sensor, the operation steps of the operator are reduced, the detection efficiency is greatly improved, and the problem of low efficiency of the existing verification equipment is solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the pressure transmitter multi-station verification device of the utility model;

[0016] Figure 2 It is a right view of Figure 1 ;

[0017] Figure 3 It is a right view of Figure 1 ;

[0018] Figure 4 It is a control system block diagram of the embodiment of the utility model;

[0019] Figure 5 It is a single-chip microcomputer circuit schematic view in the embodiment of the utility model;

[0020] Figure 6 It is a power supply circuit schematic view in the embodiment of the utility model;

[0021] Figure 7 It is a hand / automatic control circuit schematic view in the embodiment of the utility model;

[0022] Figure 8 It is a signal output circuit schematic view in the embodiment of the utility model;

[0023] Figure 9 It is a station selection circuit schematic view in the embodiment of the utility model;

[0024] Figure 10 It is a signal input and indicator lamp control circuit schematic view in the embodiment of the utility model;

[0025] Figure 11 It is a quick connector structure schematic view in the embodiment of the utility model.

[0026] In the drawing: 1 - box body; 2 - threaded station; 3 - controller; 4 - hand / automatic control knob; 5 - station selection knob; 6 - delay control knob; 7 - position indicator lamp; 8 - signal input interface; 9 - pressure pipeline; 10 - gas source interface; 11 - signal output interface; 12 - panel; 13 - power supply interface; 14 - quick connector. DETAILED DESCRIPTION

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] Please refer to Figures 1-3 、 Figure 11 A pressure transmitter multi-station calibration device, comprising a box body 1 and a panel 12, the panel 12 is provided with six threaded stations 2 arranged in a rectangular array, the threaded stations 2 are provided with quick connectors 14, the connecting ports of the quick connectors 14 are matched with the connecting ends of the pressure transmitters to be detected and the standard pressure gauges in general, the quick connectors 14 can be external thread quick connectors or internal thread quick connectors, in the embodiment, the quick connectors 14 select the quick connector structure mentioned in the prior application of the applicant (the announcement number is CN 221325773 U), the quick connector threaded connection mode is a general thread, without using any transition joint, eight different specifications of threads can be connected (i.e. internal thread: NPT1 / 2, ZG1 / 2, G1 / 2, M20x1.5; external thread: NPT1 / 2, ZG1 / 2, G1 / 2, M20x1.5), which can be selected according to the connection type of the pressure transmitter, and the operator only needs to assemble the pressure transmitter to be detected with the upper end connecting port of the quick connector 14 during calibration.

[0029] One of the six threaded stations 2 is installed with a standard pressure gauge, and the other five are installed with pressure transmitters to be detected. The pressure transmitters to be detected can also be pressure sensors. A position indicating lamp 7 indicating whether the station is in detection and a signal input interface 8 receiving the signal of the pressure transmitter to be detected are arranged near each threaded station 2.

[0030] The panel 12 is also provided with a hand / auto control knob 4, a station selection knob 5, a position indicating lamp 7 and a signal input interface 8; one side of the box body 1 is provided with an air source interface 10, a signal output interface 11, a power supply interface 13 and a delay control knob 6, the air source interface 10 is connected with each threaded station 2 through the pressure pipeline 9 in the box body 1; the pressure pipeline 9 can be connected by engineering plastic pipes or metal pipes through pipe joints, or be a whole metal piece drilled and processed, the engineering plastic pipe or metal pipe scheme has the advantages of convenient connection and low cost. The whole metal piece drilling and processing scheme has the advantages of long service life, high strength and not easy to damage.

[0031] The signal input interface 8 is connected to the corresponding pressure transmitter to be detected through a wire; the box body 1 is provided with a controller 3, the single-chip microcomputer in the controller 3 is connected to a signal input and indicator light control circuit, a signal output circuit, a manual / automatic control circuit, a station selection circuit, a delay control circuit and a power supply circuit, the manual / automatic control circuit is connected to a manual / automatic control knob, the delay control circuit is connected to a delay control knob, and the station selection circuit is connected to a station selection knob; the power supply circuit is connected to a power supply interface 13, and the signal output interface 11 is connected to a terminal computer through a cable. The signal output interface 11 is in the form of 4-20mA.

[0032] See Figures 4-10 The model of the single-chip microcomputer is ATmega8, which is a high-performance, low-power 8-bit AVR microprocessor. The ATmega8 has two 8-bit timers / counters with a prescaler (Separate Prescale) in a comparison mode. A 16-bit timer / counter with a prescaler (14 Separate Prescale) in a comparison and capture mode, the ATmega8 can reach a performance close to 1MIPS / MHz, which is 10 times higher than the running speed of a common CISC single-chip microcomputer. The power supply interface 13 is connected to an external DC 24v power supply, and the model of the power supply circuit is a LM2596 switching voltage regulator, which can output DC 5V.

[0033] In the use of the embodiment of the utility model, 1-5 pressure transmitters to be detected and a standard pressure gauge are respectively connected to the quick connector 14 on the corresponding threaded station 2, the air source interface 10 is connected to compressed air, the signal detected by the pressure transmitter to be detected is sent to the signal output interface 11 under the control of the single-chip microcomputer and is connected to the terminal computer, the pressure data of the pressure transmitter or pressure sensor to be detected is displayed, and whether the pressure transmitter to be detected is qualified is determined by comparing the display of the standard pressure gauge.

[0034] The manual / automatic control knob 4 is used for mode switching, the station selection knob 5 is used for selecting the pressure transmitter of a specific station for detection in the manual mode by the operator by rotating the station selection knob 5. The delay control knob 6 can set the interval time of automatic detection between 2-6 seconds at will, so that the detection of a batch of pressure transmitters can be conveniently and quickly completed.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure transmitter multi-station calibrator apparatus, characterized by: The box body and the panel are provided with several threaded workstations, and the threaded workstations are provided with quick connectors, the connecting ports of the quick connectors are matched with the connecting ends of the pressure transmitters and the standard pressure gauges, the quick connectors are external thread quick connectors or internal thread quick connectors, and the pressure transmitters are selected according to the connection types of the pressure transmitters; The panel is further provided with a manual / automatic control knob, a workstation selection knob, an indicator lamp and a signal input interface; one side of the box body is provided with an air source interface, a signal output interface, a power supply interface and a delay control knob, the air source interface is connected with the threaded workstations through pressure pipelines in the box body; the signal input interface is connected with the corresponding pressure transmitters through wiring; The box body is provided with a controller, the single-chip microcomputer in the controller is connected with a signal input and indicator lamp control circuit, a signal output circuit, a manual / automatic control circuit, a workstation selection circuit, a delay control circuit and a power supply circuit, the manual / automatic control circuit is connected with the manual / automatic control knob, the delay control circuit is connected with the delay control knob, and the workstation selection circuit is connected with the workstation selection knob; the power supply circuit is connected with the power supply interface, and the signal output interface is connected with a terminal computer through a cable.

2. The pressure transmitter multi-station calibrator of claim 1, wherein: The power supply interface is connected with an external DC 24v power supply, and the model of the power supply circuit is an LM2596 switching voltage regulator.

3. The pressure transmitter multi-station calibrator of claim 1, wherein: Each threaded workstation is provided with a position indicator lamp for indicating whether the workstation is in detection and a signal input interface for receiving the signal of the pressure transmitter to be detected.

4. The pressure transmitter multi-station calibrator of claim 1, wherein: The number of the threaded workstations is six, and the threaded workstations are arranged in a rectangular array.

5. The pressure transmitter multi-station calibrator of claim 1, wherein: The signal output interface is any one of 4-20mA, 1-5V, 0-10V and 0-5V signal transmission forms.

6. A pressure transmitter multi-station calibrator as defined in claim 1, wherein: The pressure pipelines are formed by connecting engineering plastic pipes or metal pipes through pipe joints or are formed by drilling a whole metal piece.

7. A pressure transmitter multi-station calibrator as defined in claim 1 wherein: The model of the single-chip microcomputer is ATmega8.

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