SF6 Density Relay Calibrator/Density Monitor | Testing Precautions?

SF6 Density Relay Calibrator/Density Monitor/Density Relay Verifier - Testing Precautions and Features?

The testing precautions and features of the density relay calibrator are as follows:

I. Main Features

1. High-Precision Measurement: Employs a high-precision sensor, enabling simultaneous and accurate measurement and verification of pressure and contact action values, ensuring reliable data.

2. Strong Compatibility: One device can typically be compatible with the verification of density relays for various gases such as SF6, N2, and mixed gases, suitable for different pressure levels and contact types.

3. Intelligent Operation: Built-in microprocessor automatically controls the pressure increase/decrease rate, displays the pressure-time curve in real time, and automatically determines contact action, records data, and generates reports, improving efficiency.

4. Integrated Functions: Integrates multiple functions such as automatic vacuuming, gas filling, precision measurement, and data recording. Some devices feature automatic temperature compensation, achieving integrated testing.

5. Portable Design: Compact structure, easy to carry to the field, meeting the on-site verification needs of substations, power plants, etc.

II. Test Precautions

1. Safety Preparation: Before calibration, ensure the equipment is reliably grounded and operators wear protective equipment. For SF6 gas equipment, connect the calibrator in a well-ventilated area and strictly use qualified pipes and connectors to prevent gas leakage.

2. Correct Wiring: Accurately identify the relay alarm, interlock, and other signal terminals, and ensure secure wiring. Use a stable voltage source provided by the instrument to avoid accidental triggering or electric shock risks.

3. Control Process: The pressure increase and decrease processes should be gradual. Operation should be even slower when approaching the theoretical contact action value to avoid pressure overshoot leading to misjudgment or equipment damage.

4. Key Focus Areas: Closely observe the synchronicity between the pressure gauge reading and contact action, and accurately record the action and reset values of each signal. After calibration, be sure to release the gas before disassembling the connectors and check the relay's sealing.

5. Environment and Data: Pay attention to the effect of ambient temperature on pressure; perform temperature conversions if necessary. Properly preserve calibration records to provide a basis for equipment condition assessment.

In conclusion, the correct use of the density relay calibrator is crucial for ensuring the safe operation of electrical equipment. The MS-401 density relay calibrator's main function is to measure the alarm value, lockout value, alarm response value, and lockout response value of SF₆ gas density relays. The measurement process supports single-lockout and double-lockout measurements. The instrument also features calibration functions for pressure gauges at room temperature and 20°C.

1. Simple Operation: All testing processes are completed automatically by the instrument, requiring no manual intervention and avoiding cumbersome manual gas path adjustments.

2. Convenient Testing: This product is a portable instrument equipped with various types of transition connectors, allowing for on-site calibration of density relays of most switch types without disassembly.

3. Highly Intelligent: The calibration process does not require a constant temperature chamber; it calibrates SF₆ gas density relays and pressure gauges within any effective temperature range. Utilizing a dynamic pressure and temperature compensation algorithm, it automatically completes pressure measurement and 20°C value conversion, simultaneously displaying the pressure at the measured ambient temperature, the pressure at the ambient temperature and 20°C, and the ambient temperature, completely solving the problem of difficult on-site calibration of SF₆ gas density relays.

4. Powerful Functions: During SF₆ gas density relay calibration, it simultaneously tests one set of alarm signals and two sets of interlock signals, and also features calibration functions for both room temperature and 20-degree pressure gauges.

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