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A Method for Field Calibration of Ground Hydraulic Tester

A hydraulic tester and field calibration technology, applied in testing/calibration devices, instruments, measuring fluid pressure, etc., can solve the problem of hydraulic tester equipment accuracy, air tightness, airtightness reduction, hydraulic tester oil leakage, flowmeter Accuracy reduction and other problems, to achieve the effect of low cost, accurate and reliable value, and convenient implementation

Active Publication Date: 2018-01-16
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The general application method is to dismantle the flowmeter and digital display meter and send it to the inspection station for verification. Frequent disassembly will reduce the accuracy, air tightness and airtightness of the hydraulic tester equipment, resulting in lower accuracy of the flowmeter and oil leakage of the hydraulic tester. , pressure instability and other phenomena

Method used

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  • A Method for Field Calibration of Ground Hydraulic Tester
  • A Method for Field Calibration of Ground Hydraulic Tester

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Embodiment Construction

[0029] The steps of the calibration method involved in the present invention are:

[0030] Step 1: Selection of Calibration Equipment

[0031] The calibrator number is 744; the parameters are: current gear measurement range: (0~22) mA; measurement allowable error: 0.01%+0.005%.

[0032] Step 2: Calibration Preparation

[0033] Step 2.1: Power on and warm up

[0034] As the standard calibrator and the large-scale equipment where the digital display meter to be calibrated is normally connected to 220V, 50Hz mains power. Warm up for 15 minutes after starting up.

[0035] Step 2.2: Reference Signal Input

[0036] After power-on, according to the use requirements of the digital display meter FPI35010 to be calibrated, use the power supply of the experiment / work site to provide a stable reference signal of 4-20mA for the digital display meter FPI35010 to be calibrated.

[0037] Step 2.3: Device Connection

[0038] see figure 1 , according to the input signal type of the digit...

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Abstract

The invention relates to a method for on-site calibration of a ground hydraulic tester, which is especially suitable for the calibration requirements of digital display meters that are difficult to disassemble on large equipment. The working site is used to provide reference signals for the power supply system of airborne experimental equipment. Based on the characteristics that the calibrator can directly measure the pressure value and is light and easy to carry, it will pass the verification / calibration of the superior institution, and the accuracy level is five times higher than that of the digital display meter being calibrated. The above calibrator is used as the standard equipment for calibration, and directly measures the output pressure value of the equipment being calibrated at the work site, and calculates the error and uncertainty to obtain complete and accurate calibration data. This method can calibrate the digital display meter on site.

Description

technical field [0001] The invention relates to a method for on-site calibration of a ground hydraulic tester, which is especially suitable for the calibration requirements of digital display meters that are difficult to disassemble on large equipment. Background technique [0002] The ground hydraulic tester is a special equipment for testing aircraft performance. It has the function of cleaning its own pipeline during internal circulation and cleaning the pipeline connected to it during circulation. The system can manually control the cooler or automatically control the cooler through the digital display to cool the working oil. Its system oil temperature, test system pressure and test system flow are all displayed by digital display, and all operations and displays are concentrated on the panel. [0003] The general application method is to dismantle the flowmeter and digital display meter and send it to the inspection station for verification. Frequent disassembly will ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F25/00G01L27/00G01D18/00
Inventor 张蕊
Owner HARBIN
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