CN112985548A - Tracking type water level meter calibration device and calibration method using same - Google Patents
Tracking type water level meter calibration device and calibration method using same Download PDFInfo
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- CN112985548A CN112985548A CN202110420015.3A CN202110420015A CN112985548A CN 112985548 A CN112985548 A CN 112985548A CN 202110420015 A CN202110420015 A CN 202110420015A CN 112985548 A CN112985548 A CN 112985548A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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Abstract
The invention relates to the field of water level detection, in particular to a tracking type water level meter calibration device and a method for calibrating by using the same, wherein the device comprises: a horizontal base; a fixed rod fixed on the horizontal base; the moving rod is telescopically connected with the top end of the fixed rod; the calibration platform is arranged on the moving rod; the vernier caliper is connected with the fixed rod through the fixed rod, and a water container is installed at the top end of the vernier caliper; the calibration controller is arranged on the calibration platform and is electrically connected with the tracking type water level meter arranged on the calibration platform, and the fixed rod is provided with a sampling number control button electrically connected with the calibration controller. The calibration device of the tracking type water level meter provided by the scheme of the invention can be used for carrying out tracking speed calibration, sensitive threshold calibration, indicating value error calibration, repeatability error calibration, indicating value stability calibration and the like on the tracking type water level meter.
Description
Technical Field
The invention relates to the field of water level detection, in particular to a calibration device of a tracking type water level meter and a calibration method by using the calibration device.
Background
The tracking water level meter is a common instrument in river model tests and is mainly used for measuring the water level in the river model tests and the harbor model tests. Newly manufactured, in-service, and after maintenance tracking water level gauges need to be verified and calibrated to verify their metrological performance. In the prior art, because standard equipment or a standard device for verifying the tracking type water level meter does not exist, one or two items are usually verified and calibrated manually according to the conditions of the existing instruments, the workload is high, the efficiency is low, and meanwhile, the verification can be performed by professional technicians, so that the verification efficiency and the accuracy of the tracking type water level meter are limited to a certain extent. In view of the technical problems that the conventional verification item of the tracking type water level meter is not completely implemented at one time and has low efficiency, a special verification device is required to be provided so as to verify the tracking type water level meter.
Disclosure of Invention
The invention provides a tracking type water level gauge checking device and a method for checking by using the same, aiming at overcoming the problems in the prior art.
The invention provides a tracking type water level meter calibration device in a first aspect, which comprises:
a horizontal base;
the fixed rod is fixed on the horizontal base;
the moving rod is telescopically connected with the top end of the fixed rod;
the calibration platform is arranged on the moving rod;
the vernier caliper is connected with the fixed rod through a fixed rod, and a water container is installed at the top end of the vernier caliper;
the calibration controller is arranged on the calibration platform and is electrically connected with the tracking type water level meter arranged on the calibration platform, and the fixed rod is provided with a sampling control button electrically connected with the calibration controller.
Preferably, the horizontal base comprises a chassis, a horizontal adjusting screw arranged on the chassis and a horizontal indicator.
Preferably, the moving rod is connected with the fixed rod through a fastening nut, and the protruding length of the moving rod is adjusted by the fastening nut.
Preferably, the vernier caliper is fixed on the fixed rod, the fixed rod is fixed on the fixed rod through screws, and a plurality of adjusting handles are further arranged on the vernier caliper.
Preferably, the calibration device further comprises a platform support member, the platform support member is riveted on the moving rod, and the calibration platform is fixed on the platform support member.
Preferably, the tracking type water level meter is fixed on the calibration platform through a plurality of bolts;
the communication port of the tracking type water level meter is connected with the signal input port of the calibration controller through a communication cable, and the power port of the tracking type water level meter is connected with the power supply output interface of the calibration controller through a power supply cable.
The second aspect of the present invention further provides a method for performing calibration by using the tracking type water level meter, where the calibration method includes the following steps:
s1, installing a tracking type water level meter on the calibration platform, and leveling the horizontal base;
s2, sliding the vernier caliper to a zero scale position, and injecting 50ml of clean water into the water container;
s3, adjusting the moving rod to enable the measuring pin of the tracking type water level meter to be in contact with the water surface of the water container;
s4, carrying out tracking speed verification and sensitivity threshold verification on the tracking type water level meter by using the vernier caliper;
s5, performing indication error check and repeatability error check on the tracking type water level meter by using the vernier caliper;
s6, performing indication stability verification on the tracking type water level meter by using the vernier caliper;
and S7, when the indexes are verified, generating a table file according to the verification data, and storing the table file in the calibration controller.
Preferably, step S4 specifically includes:
s41, turning on a main power switch of the calibration controller, and preheating for 10 min;
s42, pressing the sampling control button, reading current water level data S1 and timing t1 by the calibration controller, adjusting the vernier caliper to enable a measuring needle of the tracking type water level instrument to continuously move upwards for 15cm along the water surface, pressing the sampling control button, reading the current water level data S2 and timing t2 by the calibration controller, and automatically calculating the ascending speed of the measuring needle according to the two water level data S1 and S2 and the counted time t1 and t 2;
s43, pressing the sampling control button after the scale of the vernier caliper is reset to zero, reading current water level data S3 and timing t3 by the calibration controller, adjusting the vernier caliper to enable a measuring needle of the tracking type water level meter to continuously move downwards for 15cm along the water surface, then pressing the sampling control button, reading the current water level data S4 by the calibration controller and timing t4, and then automatically calculating the descending speed of the measuring needle according to the two water level data S3 and S4 and the counted time t3 and t 4;
and S44, the calibration controller stores the walking speed data of the measuring needle acquired in the steps S42 and S43 in a storage area of the calibration controller, and judges whether the error between the walking speed of the measuring needle of the tracking type water level meter and the tracking speed parameter of the factory standard meets the requirement.
Preferably, step S4 further includes:
s45, adjusting the vernier caliper to a preset scale value, then pressing the sampling control button, reading the current water level data by the calibration controller, keeping the water surface of the water container stable, pressing the sampling control button once when adjusting the vernier caliper to ascend/descend 0.05mm, reading the corresponding water level data by the calibration controller, and repeating the operation for at least 5 times;
and S46, the calibration controller stores the water level data acquired in the step S45 in a storage area of the calibration controller, and judges whether the scale value change of the vernier caliper is consistent with the water level data change read by the calibration controller.
Preferably, step S5 specifically includes:
s51, adjusting the vernier caliper to a preset scale value, then pressing the numerical control button, reading the current water level data by the calibration controller, keeping the water surface of the water container stable, adjusting the vernier caliper to return to the preset scale value after every 20% of full-scale distance is increased or decreased, pressing the numerical control button again, reading the water level data by the calibration controller, and repeating the operation for at least 5 times;
and S52, the calibration controller stores the water level data acquired in the step S51 in a storage area, calculates the indicating value error and the indicating value repeatability error of the water level data, and judges whether the requirements are met.
Preferably, step S6 specifically includes:
s61, adjusting the vernier caliper to a preset scale value and fixing the vernier caliper, pressing the numerical control button after the water surface of the water container is stable, reading the current water level data by the calibration controller, and reading the water level data every 30min, wherein the operation is repeated for at least 4 times;
and S62, the calibration controller stores the water level data acquired in the step S61 in a storage area of the calibration controller, calculates the indicating value deviation of the water level data, and judges whether the requirements are met.
According to the calibration device of the tracking type water level meter, provided by the technical scheme, the tracking speed calibration, the sensitivity threshold calibration, the indication error calibration, the repeatability error calibration, the indication stability calibration and the like can be performed on the tracking type water level meter.
Drawings
FIG. 1 is a schematic structural diagram of a tracking type water level gauge calibration device;
FIG. 2 is a flow chart of a method of verifying a tracking level gauge.
Description of the reference numerals
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the inventive concept.
The embodiment of the invention provides a tracking type water level meter checking device, as shown in fig. 1, the tracking type water level meter checking device comprises: a horizontal base; a fixed rod 14 fixed on the horizontal base; a moving rod 16 telescopically connected to the top end of the fixed rod 14; a calibration platform 17 arranged on the moving rod 16; the vernier caliper 12 is connected with the fixed rod 14 through a fixed rod 6, and a water container 13 is installed at the top end of the vernier caliper 12; and the calibration controller 21 is arranged on the calibration platform 17, wherein a tracking type water level meter 22 to be verified is arranged on the calibration platform 17, the calibration controller 21 is electrically connected with the tracking type water level meter 22, and the fixed rod 6 is provided with a sampling control button 11 electrically connected with the calibration controller 21.
In this embodiment, the horizontal base needs to be leveled for use, the fixed rod 14 is fixed, and the position of the calibration platform 17 can be changed correspondingly by adjusting the extending length of the moving rod 16. Preferably, the water container 13 is an aluminum-shell water container, the bottom of which is bonded to the top of the vernier caliper 12, and when the calibration is performed, the aluminum-shell water container holds water. The bottom of the calibration platform 17 is provided with a probe hole 20, and a probe of a tracking type water level meter 22 passes through the probe hole 20 and tracks the water surface position of the water container 13 so as to measure the water level data. The vernier caliper 12 is adjusted to move a water container 13 installed at the top end of the vernier caliper, causing a water level change. The calibration controller 21 is used for reading water level data and calibrating various parameters of the tracking water level meter 22 by matching with the data acquisition control button 11.
On the basis of the example of the invention, according to a preferred embodiment, the horizontal base comprises a chassis 2, horizontal adjusting screws (1, 4, 5 in fig. 1) arranged on the chassis 2 and a horizontal indicator 3. In practical application, the steam pocket in the level indicator 3 is centered by adjusting the level adjusting screw, so as to level the base.
On the basis of the embodiment of the present invention, according to a preferred embodiment, the moving rod 16 is connected with the fixed rod 14 through a fastening nut 15, an invisible part of the moving rod 16 extends into the moving rod 16, and the protruding length of the moving rod 16 is adjusted by using the fastening nut 15.
On the basis of the embodiment of the present invention, according to a preferred embodiment, the vernier caliper 12 is fixed on the fixing rod 6, the fixing rod 6 is fixed on the fixing rod 14 through a screw 7, and the vernier caliper 12 is further provided with a plurality of adjusting handles (8, 9, and 10 in fig. 1). The adjusting handle is used for adjusting the vernier caliper 12 to move up and down according to scales, and the water container 13 arranged at the top end of the vernier caliper 12 moves along with the vernier caliper, so that the water level is changed.
And, the fixed link 6 is also provided with a digital control button 11, the digital control button 11 is electrically connected with the calibration controller 21 by wire, and the calibration controller 21 starts to check and read the water level data in the water container 13 in real time when being pressed.
On the basis of the embodiment of the present invention, according to a preferred embodiment, the calibration device further includes platform supports (18, 19 in fig. 1), the platform supports are riveted on the moving rod 16, and the calibration platform 17 is fixed on the platform supports. The calibration platform 17 is fixed to the platform support by means of a plurality of countersunk fixing screws, for example.
On the basis of the embodiment of the present invention, according to a preferred embodiment, the tracking type water level gauge 22 is fixed on the calibration platform 17 by a plurality of bolts.
The communication port of the tracking type water level meter 22 is connected with the signal input port of the calibration controller 21 through a communication cable for signal transmission, and preferably, the communication port of the tracking type water level meter is connected with the RS-485 input port of the calibration controller. And a power supply port of the tracking type water level meter 22 is connected with a power supply output interface of the calibration controller 21 through a power supply cable for electrifying.
According to the tracking type water level indicator checking device provided by the embodiment of the invention, the tracking type water level indicator 22 can be completely and quickly checked and calibrated, and the checking and calibrating precision is improved.
The invention also provides a method for verifying the tracking type water level meter, and the tracking type water level meter is actually verified by using the tracking type water level meter verifying device.
The checking method comprises the following steps:
s1, leveling the horizontal base;
specifically, the steam pocket in the level indicator 3 is centered by adjusting the level adjusting screws 3, 4 and 5, so that the base is leveled;
s2, sliding the vernier caliper 12 to the zero scale position, and injecting 50ml of clean water into the water container 13;
s3, adjusting the moving rod 16 to make the measuring needle of the tracking type water level meter 22 contact with the water surface of the water container 13;
specifically, the extending length of the moving rod 16 is adjusted by rotating the fastening screw cap 15, so that the vertical distance from the bottom of the calibration platform 17 to the opening of the water container 13 is about less than the length of the measuring needle of the tracking type water level meter 22 to be calibrated, and the measuring needle of the tracking type water level meter 22 can be contacted with the water surface so as to acquire water level data;
s4, carrying out tracking speed verification and sensitivity threshold verification on the tracking type water level meter 22 by using the vernier caliper 12;
s5, performing indication error check and repeatability error check on the tracking type water level meter 22 by using the vernier caliper 12;
s6, performing indication stability verification on the tracking type water level meter 22 by using the vernier caliper 12;
and S7, when the indexes are verified, storing a table file generated by the verification data in the calibration controller 21.
In the embodiment of the present invention, the verifying the tracking type water level meter 22 includes: tracking speed check, sensitivity threshold check, indicating error check, repeatability error check, indicating stability check and the like. In the calibration process, the tracking water level meter 22 obtains water level data by the fact that the measuring needle of the tracking water level meter is always in contact with the water surface of the water container 13.
According to a preferred implementation manner of the embodiment of the present invention, step S4 specifically includes:
s41, turning on a main power switch of the calibration controller 21, and preheating for 10 min;
s42, pressing the sampling control button 11, reading current water level data S1 and timing t1 by the calibration controller 21, adjusting the vernier caliper 12 to enable the measuring needle of the tracking type water level gauge 22 to continuously move upwards for 15cm along the water surface, pressing the sampling control button 11, reading the current water level data S2 by the calibration controller 21 and timing t2, and automatically calculating the ascending speed of the measuring needle according to the two water level data S1 and S2 and the counted time t1 and t 2;
s43, pressing the sampling control button 11 after the scale of the vernier caliper 12 is reset to zero, reading current water level data S3 and timing t3 by the calibration controller 21, adjusting the vernier caliper 12 to enable the measuring needle of the tracking type water level gauge 22 to continuously move downwards for 15cm along the water surface, then pressing the sampling control button 11, reading the current water level data S4 by the calibration controller 21 and timing t4, and then automatically calculating the descending speed of the measuring needle according to the two water level data S3 and S4 and the counted time t3 and t 4;
and S44, the calibration controller 21 stores the walking speed data of the measuring needle acquired in the steps S42 and S43 in a storage area of the calibration controller, and judges whether the error between the walking speed of the measuring needle of the tracking type water level gauge 22 and the tracking speed parameter of the calibration standard meets the requirement.
In the embodiment of the present invention, the verification of the tracking speed of the tracking type water level meter 22 is realized through the above steps S41-S44. In steps S42 and S43, when the vernier caliper 12 is adjusted to be raised/lowered, the water container 13 is raised/lowered, and the stylus of the tracking type water level gauge 22 is always in contact with the water surface of the water container 13, thereby acquiring the change of the water level data. In this embodiment, the tracking-type water level meter 22 to be measured can be calibrated by adjusting the moving speed of the vernier caliper to be greater than the tracking speed of the water level meter.
According to a preferred implementation of the embodiment of the present invention, the step S4 further includes:
s45, adjusting the vernier caliper 12 to a preset scale value, then pressing the sampling control button 11, reading the current water level data by the calibration controller 21, keeping the water surface of the water container 13 stable, pressing the sampling control button 11 once when adjusting the vernier caliper 12 to ascend/descend 0.05mm, reading the corresponding water level data by the calibration controller 21, and repeating the operation for at least 5 times;
and S46, the calibration controller 21 stores the water level data acquired in the step S45 in a storage area of the calibration controller, and judges whether the scale value change of the vernier caliper is consistent with the water level data change read by the calibration controller 21.
In the embodiment of the present invention, the accuracy of the tracking type water level gauge 22 is verified through the above steps S45-S47. If the calibration controller 21 judges that the error between the change of the scale value of the vernier caliper and the change of the actual water level data meets the requirement, the sensitivity threshold of the tracking type water level meter 22 is qualified, otherwise, the sensitivity threshold is unqualified.
According to a preferred implementation manner of the embodiment of the present invention, step S5 specifically includes:
s51, adjusting the vernier caliper 12 to a preset scale value, then pressing the numerical control button 11, reading the current water level data by the calibration controller 21, keeping the water surface of the water container 13 stable, adjusting the vernier caliper 12 to return to the preset scale value after each 20% full-scale distance rise or fall, pressing the numerical control button 11 again, reading the water level data by the calibration controller 21 at the moment, and repeating the operation for at least 5 times;
s52, the calibration controller 21 stores the water level data acquired in the step S51 in a storage area, calculates the indicating value error and the indicating value repeatability error of the water level data, and judges whether the requirements are met.
In the embodiment of the invention, the indication error check and the indication repeatability error check are carried out on the same measuring and reading check point through the steps S51-S52.
According to a preferred implementation manner of the embodiment of the present invention, step S6 specifically includes:
s61, adjusting the vernier caliper 12 to a preset scale value and fixing, pressing the sampling control button 11 after the water surface of the water container 13 is stable, reading the current water level data by the calibration controller 21, and reading the water level data once every 30min, wherein the operations are repeated at least 4 times;
s62, the calibration controller 21 stores the water level data acquired in the step S61 in a storage area, calculates the indicating value deviation of the water level data, and judges whether the requirement is met.
In the embodiment of the present invention, the indication stability verification is performed on the same read check point at different time points through the steps S61-S62.
According to a preferred implementation manner of the embodiment of the present invention, after the indexes are verified, the calibration controller 21 uses a voice to prompt the completion of the calibration step, and stores the table file generated according to the verification data in the storage area. When the calibration controller 21 recognizes that the USB flash disk is inserted, the data is automatically copied into the USB flash disk, and the voice prompts that the copying operation is finished.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, but these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall into the protection scope of the invention.
Claims (10)
1. The utility model provides a tracking formula water level gauge verifying attachment which characterized in that, tracking formula water level gauge verifying attachment includes:
a horizontal base;
the fixed rod (14) is fixed on the horizontal base;
the moving rod (16) is connected with the top end of the fixed rod (14) in a telescopic way;
a calibration platform (17) arranged on the moving rod (16);
the vernier caliper (12) is connected with the fixed rod (14) through a fixed rod (6), and a water container (13) is installed at the top end of the vernier caliper (12);
the calibration controller (21) is arranged on the calibration platform (17), the calibration controller (21) is electrically connected with a tracking type water level meter (22) arranged on the calibration platform (17), and a sampling number control button (11) electrically connected with the calibration controller (21) is arranged on the fixed rod (6).
2. The tracking-type water level indicator checking device according to claim 1, wherein the horizontal base comprises a chassis (2), a horizontal adjusting screw arranged on the chassis (2) and a horizontal indicator (3).
3. The tracking-type water level gauge calibration device according to claim 1, wherein the moving rod (16) is connected with the fixed rod (14) through a fastening nut (15), and the protruding length of the moving rod (16) is adjusted by the fastening nut (15).
4. The tracking-type water level indicator checking device according to claim 1, wherein the vernier caliper (12) is connected with the fixing rod (6), the fixing rod (6) is fixed on the fixing rod (14) through screws, and a plurality of adjusting handles are further arranged on the vernier caliper (12).
5. The tracking type water level indicator checking device according to claim 1, further comprising a platform support member, wherein the platform support member is riveted on the moving rod (16), the calibration platform (17) is fixed on the platform support member, wherein the tracking type water level indicator (22) is fixed on the calibration platform (17) through a plurality of bolts, and a measuring pin through hole (20) is formed in the bottom of the calibration platform (17);
the communication port of the tracking type water level meter (22) is connected with the signal input port of the calibration controller (21) through a communication cable, and the power supply port of the tracking type water level meter (22) is connected with the power supply output interface of the calibration controller (21) through a power supply cable.
6. A method of verification using a tracking water level gauge verification device, wherein the tracking water level gauge verification device is a device according to any one of claims 1 to 5;
the method comprises the following steps:
s1, installing a tracking type water level meter (22) on the calibration platform (17) and leveling the horizontal base;
s2, sliding the vernier caliper (12) to a zero scale position, and injecting 50ml of clean water into the water container (13);
s3, adjusting the moving rod (16) to enable the measuring needle of the tracking type water level meter (22) to be in contact with the water surface of the water container (13);
s4, carrying out tracking speed verification and sensitivity threshold verification on the tracking type water level meter (22) by using the vernier caliper (12);
s5, performing indication error check and repeatability error check on the tracking type water level meter (22) by using the vernier caliper (12);
s6, performing indication stability verification on the tracking type water level meter (22) by using the vernier caliper (12);
and S7, after the indexes are verified, generating a table file according to the verification data, and storing the table file in the calibration controller (21).
7. The method according to claim 6, wherein step S4 specifically comprises:
s41, turning on a main power switch of the calibration controller (21), and preheating for 10 min;
s42, pressing the sampling control button (11), reading current water level data S1 and timing t1 by the calibration controller (21), adjusting the vernier caliper (12) to enable the measuring needle of the tracking type water level meter (22) to continuously move upwards for 15cm along the water surface, then pressing the sampling control button (11), reading the current water level data S2 by the calibration controller (21) and timing t2, and then automatically calculating the upward speed of the measuring needle according to the two water level data S1 and S2 and the counted time t1 and t 2;
s43, after the scale of the vernier caliper (12) is reset to zero, the sampling control button (11) is pressed, the calibration controller (21) reads current water level data S3 and times t3, the vernier caliper (12) is adjusted to enable the measuring needle of the tracking type water level meter (22) to track the water surface and continuously move downwards for 15cm, then the sampling control button (11) is pressed, the calibration controller (21) reads the current water level data S4 and times t4, and then the descending speed of the measuring needle is automatically calculated according to the two water level data S3 and S4 and the counted time t3 and t 4;
s44, the calibration controller (21) stores the walking speed data of the measuring needle acquired in the steps S42 and S43 in a storage area of the calibration controller, and judges whether the error between the walking speed of the measuring needle of the tracking water level meter (22) and the tracking speed parameter of the factory standard meets the requirement or not.
8. The method according to claim 6, wherein step S4 further comprises:
s45, adjusting the vernier caliper (12) to a preset scale value, then pressing the sampling control button (11), reading current water level data by the calibration controller (21), keeping the water surface of the water container 13 stable, pressing the sampling control button (11) once when adjusting the vernier caliper (12) to ascend/descend 0.05mm, reading corresponding water level data by the calibration controller (21), and repeating the operation for at least 5 times;
and S46, the calibration controller (21) stores the water level data acquired in the step S45 in a storage area of the calibration controller, and judges whether the scale value change of the vernier caliper is consistent with the water level data change read by the calibration controller (21).
9. The method according to claim 6, wherein step S5 specifically comprises:
s51, adjusting the vernier caliper (12) to a preset scale value, then pressing the sampling control button (11), reading current water level data by the calibration controller (21), keeping the water surface of the water container 13 stable, adjusting the vernier caliper (12) to return to the preset scale value after every 20% of full-range distance is increased or decreased, pressing the sampling control button (11) again, reading the water level data at the moment by the calibration controller (21), and repeating the operation for at least 5 times;
s52, the calibration controller (21) stores the water level data acquired in the step S51 in a storage area, calculates the indicating value error and the indicating value repeatability error of the water level data, and judges whether the requirements are met.
10. The method according to claim 6, wherein step S6 specifically comprises:
s61, adjusting the vernier caliper (12) to a preset scale value and fixing the vernier caliper, pressing the numerical control button (11) after the water surface of the water container 13 is stable, reading the current water level data by the calibration controller (21), and reading the water level data every 30min, wherein the operations are repeated at least 4 times;
s62, the calibration controller (21) stores the water level data acquired in the step S61 in a storage area, calculates the indicating value deviation of the water level data, and judges whether the requirements are met.
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| CN202110420015.3A CN112985548A (en) | 2021-04-19 | 2021-04-19 | Tracking type water level meter calibration device and calibration method using same |
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| CN202110420015.3A CN112985548A (en) | 2021-04-19 | 2021-04-19 | Tracking type water level meter calibration device and calibration method using same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702887A (en) * | 2021-08-29 | 2021-11-26 | 蒋涛 | Horizontal type verification and calibration system and method for ultrasonic evaporation sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702887A (en) * | 2021-08-29 | 2021-11-26 | 蒋涛 | Horizontal type verification and calibration system and method for ultrasonic evaporation sensor |
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