CN209132354U - A kind of current monitoring tooling for the test of gas meter, flow meter esd immunity - Google Patents
A kind of current monitoring tooling for the test of gas meter, flow meter esd immunity Download PDFInfo
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- CN209132354U CN209132354U CN201821866772.3U CN201821866772U CN209132354U CN 209132354 U CN209132354 U CN 209132354U CN 201821866772 U CN201821866772 U CN 201821866772U CN 209132354 U CN209132354 U CN 209132354U
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- monitoring
- gauge outfit
- flow meter
- gas meter
- monitoring side
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Abstract
The utility model discloses a kind of current monitoring toolings for the test of gas meter, flow meter esd immunity, including multiple for measuring the gauge outfit of tested gas meter, flow meter current value, and the monitoring side for connecting tested gas meter, flow meter, the gauge outfit is equipped with positive electrode and negative electrode, the monitoring side is connect with tested combustion gas apparent source, the monitoring side includes positive monitoring side and negative monitoring side, and the anode of gauge outfit is connect with positive monitoring side, and the cathode of gauge outfit is connect with negative monitoring side.The utility model can be monitored the electric current in gas meter, flow meter during the ESD test of gas meter, flow meter, improve comprehensive and accuracy when gas meter, flow meter detection；And simply cost is relatively low and easy to maintenance for component production itself, while user can also select different gauge outfits as needed.
Description
Technical field
The utility model relates to gas meter, flow meter the field of test technology, specially a kind of to try for gas meter, flow meter esd immunity
The current monitoring tooling tested.
Background technique
Gas meter, flow meter needs to carry out esd immunity test after the completion of production, and combustion is examined using immunity experiment
Whether the performance and function of gas meter comply with standard.But during carrying out esd immunity test, not to combustion gas
Whether the electric current of table wiring board, which is abnormal, is paid close attention to.But if use ten thousand multimeters or other once current monitorings
Equipment removes the electric current on monitoring gas meter, flow meter route during electrostatic, and current monitoring equipment or multimeter are easy to be tested
Electrostatic damage in journey causes unnecessary loss.
For example, gas meter, flow meter is using corresponding single-chip microcontroller and after opening SNOOZE mode, when carrying out ESD test,
Single-chip microcontroller is due to that can make wiring board electric current increase 700 μ A suddenly and remain unchanged by electrostatic interference, assist side power down weight
Restore again after opening normal.For above-mentioned single-chip microcontroller operational mode, conventional current monitoring can only survey primary current before the test, quiet
Electric current is monitored again after extracting battery after electric immunity experiment.The electricity that this method will can not increase suddenly in wiring board
Stream, which detects, to be come, also can not just learn electric current in static discharge in wiring board whether normal variation, it is easy to cause combustion gas
The erroneous detection of table route or missing inspection.
Utility model content
The purpose of this utility model is to provide for a kind of current monitoring for the test of gas meter, flow meter esd immunity
Tooling can be monitored the electric current in gas meter, flow meter during the ESD test of gas meter, flow meter, improve gas meter, flow meter monitoring
When comprehensive and accuracy；And simply cost is relatively low and easy to maintenance for component production itself, while user can also be according to need
Select different gauge outfits.
In order to realize above-mentioned purpose of utility model, the utility model uses following technical scheme: one kind being used for gas meter, flow meter
The current monitoring tooling of esd immunity test, including multiple gauge outfits for being used to measure tested gas meter, flow meter current value, and
For connecting the monitoring side of tested gas meter, flow meter, the gauge outfit is equipped with positive electrode and negative electrode, the monitoring side and tested combustion gas apparent source
Connection, the monitoring side include positive monitoring side and negative monitoring side, and the anode of gauge outfit connect with positive monitoring side, the cathode of gauge outfit with bear
Monitoring side connection.
The gauge outfit for monitoring current in current monitoring tooling is connected to gas meter, flow meter by positive monitoring side and negative monitoring side
After upper, monitoring personnel can carry out real-time monitoring to electric current by gauge outfit.
Compared with prior art, using the electric current for the test of gas meter, flow meter esd immunity of above-mentioned technical proposal
Tooling is monitored, is had the following beneficial effects:
One, using the current monitoring tooling for the test of gas meter, flow meter esd immunity of the utility model, Neng Gou
The electric current in gas meter, flow meter is monitored during the ESD test of gas meter, flow meter, further gas meter, flow meter is monitored, is mentioned
Comprehensive and accuracy when high gas meter, flow meter monitors.
Three, multiple gauge outfits are equipped with, testing staff user can also can select different gauge outfits, electric current simultaneously as needed
The scope of application for monitoring tooling is wider.
It is two, simple that cost is relatively low and easy to maintenance, when the gauge outfit in current monitoring tooling is damaged by static electricity, replacement damage
Gauge outfit can be used continuously, convenient and practical and be avoided that economic loss.
Preferably, the range of each gauge outfit is not identical, is separately connected positive monitoring side and negative monitoring side after multiple gauge outfits are in parallel.
It is provided with the gauge outfit of multiple and different ranges, current monitoring can be carried out to the gas meter, flow meter of different size, expand use scope.
Preferably, the positive monitoring side and negative monitoring side are equipped with multiple, and each gauge outfit is singly connected with a positive monitoring side
An independent detection circuit is formed with negative monitoring side.No matter whether the meter range in independent detection circuit, each
Gauge outfit can be individually used for monitoring current, and current monitoring tooling can simultaneously be monitored multiple gas meter, flow meters at this time.
Preferably, further include for on-off observation circuit selection switch, selection switch be connected to positive monitoring side and gauge outfit
Between, or switch is selected to be connected between negative monitoring side and gauge outfit.Monitoring personnel can select according to the gas meter, flow meter of different size
The gauge outfit of different ranges, selection switch is so that replacement gauge outfit is more convenient.
Preferably, the selection switch is equipped with multiple, selects the quantity of switch identical as gauge outfit quantity, a gauge outfit and one
A selection switch series connection forms a monitoring branch, is separately connected positive monitoring side and negative monitoring side after multiple monitoring branch circuit parallel connections.
It preferably, further include short switch for preventing gauge outfit to be damaged since electric current is excessive, the short switch
It is connected in parallel with gauge outfit, gauge outfit can be effectively prevent to be damaged since electric current is excessive.
Preferably, the short switch be equipped with it is multiple, the quantity of short switch is identical as gauge outfit quantity, a gauge outfit with it is short
After way switch is in parallel, a monitoring branch is formed with corresponding selection switch connection.
Preferably, there are four the gauge outfit is set, the selection switch and short switch are again provided with four.
Detailed description of the invention
Fig. 1 is structural representation of the utility model for the current monitoring tooling of gas meter, flow meter esd immunity test
Figure；
Fig. 2 is the circuit connection diagram monitored inside tooling in the present embodiment 1；
Fig. 3 is the circuit connection diagram monitored inside tooling in the present embodiment 2；
Fig. 4 is the structural schematic diagram of current monitoring tooling in the present embodiment 3.
Appended drawing reference: 1, gauge outfit；2, positive monitoring side；3, negative monitoring side；4, selection switch；5 short switches.
Specific embodiment
The embodiments of the present invention is described more fully below with reference to reference to attached drawing.
It is as shown in Figure 1 the knot of the current monitoring tooling for the test of gas meter, flow meter esd immunity of the utility model
Structure schematic diagram, tooling are equipped with multiple gauge outfits 1 for being used to measure current value, and the range of each gauge outfit 1 is all different.In this implementation
In example, there are four the gauge outfit 1 for measuring electric current is set, and the range of four gauge outfits 1 is respectively as follows: 0-10A, 0-500mA, 0-1mA
With 0-100 μ A.The side of tooling is set there are two the positive monitoring side 2 and negative monitoring side 3 for connecting gas meter, flow meter, and multiple gauge outfits 1 are simultaneously
Positive monitoring side 2 and negative monitoring side 3 are separately connected after connection.When monitoring, the table of different ranges is selected for different gas meter, flow meter models
First 1, monitoring personnel is monitored the electric current in gas meter, flow meter by the power supply that positive monitoring side 2 and negative monitoring side 3 connect gas meter, flow meter.
Wherein, tooling is equipped with the selection switch 4 for selecting different gauge outfits 1, and by control selections switch 4, tester can be selected
The current terminal for selecting the access gas meter, flow meter of gauge outfit 1 of different ranges is monitored.
Communication etc. is powered in pyroelectric monitor on to gas meter, flow meter, inside gas meter, flow meter can generate biggish electric current, may result in
Electric current is excessive to cause gauge outfit 1 to be damaged.In order to avoid there is above-mentioned damage accident, short circuit is additionally provided in tooling in the present embodiment and is opened
It closes.Short switch is arranged in a one-to-one correspondence with gauge outfit 1, and a gauge outfit 1 and a short switch are connected in parallel can be every with effective protection
A gauge outfit 1.When being monitored using monitoring tooling, selection switch 4 and short switch are closed at, corresponding gauge outfit 1
Positive and negative anodes are then shorted, and gauge outfit 1 is shown as 0 at this time, and gas meter, flow meter powers on after stable a period of time electric current is stablized again short switch
It disconnects, then the display of gauge outfit 1 at this time is then gas meter, flow meter real-time current value.
The present embodiment mainly applies the test of gas meter, flow meter esd immunity to be monitored the electric current in gas meter, flow meter, and
Before doing ESD test, the current monitoring tooling fixed is sealed in gas meter, flow meter electric power loop, it is quiet when being carried out to gas meter, flow meter
When discharge of electricity, if electric current is abnormal variation, it can be shown by tooling real-time monitoring.
Embodiment 1:
The circuit connection diagram that Fig. 2 show gauge outfit 1 inside the tooling of embodiment 1, selects switch 4 and short switch.
In figure, K2, K4, K6 and K8 are short switch, are connected into positive monitoring side 2 and negative monitoring side with after corresponding 1 parallel connection of gauge outfit respectively
3, form the monitoring branch of multiple and different ranges.K9 in figure is the selection switch 4 that hilted broadsword is thrown more, selects switch 4 can only be simultaneously
It connects a monitoring branch to be monitored gas meter, flow meter, avoid due to operation error while opening multiple gauge outfits 1 and measure and make
It is damaged at gauge outfit 1.
Embodiment 2:
Fig. 3 is tooling inside gauge outfit 1, the circuit connection diagram of selection switch 4 and short switch in embodiment 2.With
Unlike embodiment 1, K1, K3, K5 and K7 tetra- switches are respectively adopted in the present embodiment as selection switch 4, four selections are opened
After pass 4 is connected with four gauge outfits 1 after in parallel with short switch respectively, it is connected into positive monitoring side 2 and negative monitoring side 3.Using this reality
Apply the connection method in example, tester operates different selection switches 4 according to the different gauge outfits 1 used, and when operation is brighter
It is really convenient.
Embodiment 3:
Fig. 4 is the structural schematic diagram of current monitoring tooling in this implementation 3, unlike embodiment 1 and embodiment 2, this
In embodiment, four gauge outfits are respectively connected with different positive monitoring side and negative monitoring side.At this point, being arranged in same current monitoring tooling
There are four independent detection circuit, a detection circuit equally includes gauge outfit, selection switch and short switch.In this way, detection people
Member simultaneously can detect different gas meter, flow meters by same tooling.In the present embodiment, each gauge outfit is not interfere with each other, institute
It can entirely different, identical or part difference with the range of four gauge outfits.
Claims (8)
1. a kind of current monitoring tooling for the test of gas meter, flow meter esd immunity, it is characterised in that: be used for including multiple
The gauge outfit (1) of tested gas meter, flow meter current value is measured, and the monitoring side for connecting tested gas meter, flow meter, the gauge outfit (1) are equipped with
Positive electrode and negative electrode, the monitoring side are connect with tested combustion gas apparent source, and the monitoring side includes positive monitoring side (2) and negative monitoring side
(3), the anode of gauge outfit (1) is connect with positive monitoring side (2), and the cathode of gauge outfit (1) is connect with negative monitoring side (3).
2. the current monitoring tooling according to claim 1 for the test of gas meter, flow meter esd immunity, feature exist
In: the range of each gauge outfit (1) is not identical, is separately connected positive monitoring side (2) and negative monitoring side (3) after multiple gauge outfits (1) are in parallel.
3. the current monitoring tooling according to claim 1 for the test of gas meter, flow meter esd immunity, feature exist
It is equipped in: the positive monitoring side (2) and negative test side multiple, each gauge outfit (1) is singly connected with a positive test side and negative examines
It surveys end and forms an independent detection circuit.
4. the current monitoring tooling according to claim 2 or 3 for the test of gas meter, flow meter esd immunity, feature
It is: further includes the selection switch (4) for on-off detection circuit, selection switch (4) is connected to positive monitoring side (2) and gauge outfit
(1) between, or selection switch (4) is connected between negative monitoring side (3) and gauge outfit (1).
5. the current monitoring tooling according to claim 4 for the test of gas meter, flow meter esd immunity, feature exist
It is equipped in: selection switch (4) multiple, the quantity of selection switch (4) is identical as gauge outfit (1) quantity, a gauge outfit (1) and one
A selection switch (4) series connection forms a monitoring branch, and the monitoring branch connects positive monitoring side (2) and negative monitoring side (3).
6. the current monitoring tooling according to claim 5 for the test of gas meter, flow meter esd immunity, feature exist
In: it further include the short switch for preventing gauge outfit (1) to be damaged since electric current is excessive, the short switch and gauge outfit (1)
It is connected in parallel.
7. the current monitoring tooling according to claim 6 for the test of gas meter, flow meter esd immunity, feature exist
It is equipped in: the short switch multiple, the quantity of short switch is identical as gauge outfit (1) quantity, a gauge outfit (1) and short switch
After parallel connection, it is connect with corresponding selection switch (4) and forms a monitoring branch.
8. the current monitoring tooling according to claim 7 for the test of gas meter, flow meter esd immunity, feature exist
In: there are four the gauge outfit (1) sets, the selection switch (4) and short switch are again provided with four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821866772.3U CN209132354U (en) | 2018-11-13 | 2018-11-13 | A kind of current monitoring tooling for the test of gas meter, flow meter esd immunity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821866772.3U CN209132354U (en) | 2018-11-13 | 2018-11-13 | A kind of current monitoring tooling for the test of gas meter, flow meter esd immunity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209132354U true CN209132354U (en) | 2019-07-19 |
Family
ID=67244974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821866772.3U Active CN209132354U (en) | 2018-11-13 | 2018-11-13 | A kind of current monitoring tooling for the test of gas meter, flow meter esd immunity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209132354U (en) |
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2018
- 2018-11-13 CN CN201821866772.3U patent/CN209132354U/en active Active
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