MCMD-CSF6 Gas Density Relay Calibration Instrument

MCMD-CSF6 Gas Density Relay Calibration Instrument

Model: MCMD-C Quantity: 1 set Manufacturer: Hubei MECI Electric Power Equipment Co., Ltd

Category: SF6

Keywords: MCMD-CSF6 Gas Density Relay Calibration Instrument

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Product Overview

The MCMD-C SF6 Gas Density Relay Calibration Instrument is an intelligent, fully automated device for calibrating SF6 gas density relays. It employs single-cycle instruction microcomputer technology, achieving a processing speed 20 times faster than that of conventional single-chip microcontrollers. This instrument enables on-site calibration of both pointer-type contact-output and smart current-output SF6 density relays, utilizing an interrupt-driven approach to capture relay operation in real time, thereby ensuring more accurate and timely measurements.

This instrument is a portable calibration device that can perform standard pressure conversion for SF6 gas under any ambient temperature conditions, and it can also be used to calibrate SF6 density meters and pressure gauges.

In a closed container, the pressure of SF6 gas at a given temperature is representative of its density. By convention, the SF6 gas pressure at 20°C is taken as the reference value. During field verification, pressure readings taken at different ambient temperatures must be converted to their equivalent values at 20°C in order to assess the performance of the SF6 density relay.

Product Features

1. The relay tester employs a mixed-signal, single-cycle, high-speed microcontroller as its core, offering abundant resources, powerful functionality, and robust data-processing capabilities. By integrating A/D conversion, D/A conversion, a reference voltage source, and analog amplification within the microcontroller itself, the peripheral circuitry is simplified, resulting in excellent stability and high accuracy.

2. The instrument can perform fully automatic calibration of both analog and digital density relays.

3. The initial state of contacts in density relay sets 1 to 3 can be either normally open or normally closed, and the instrument can simultaneously measure both the actuation and reset values for all three sets of contacts. Therefore, this instrument is capable of fully automatic calibration for all new and legacy models of density relays.

4. The instrument features an 8.4-inch extra-large color LCD display, capacitive touch operation, and a Chinese-character user interface, making it simple and convenient to use.

5. During measurement, the instrument simultaneously displays the current pressure, the pressure at 20°C, and the ambient temperature, thereby resolving the challenges associated with on-site calibration of SF6 density relays.

6. The testing process is fully automated, thereby eliminating errors caused by human factors.

7. The instrument can store 1,000 sets of measurement data permanently without loss, ensuring traceability for every measurement.

8. The instrument can upload test data to a PC via the RS-232 interface (with optional USB) and automatically generate dedicated test data reports; it can also print on-site test data and historically stored data using its built-in microprinter.

9. The instrument can perform calibration of ambient-pressure gauges and density meters at any ambient temperature.

10. All instrument tubing is equipped with imported quick-connect fittings, ensuring convenient connections and a low leak rate. 11. The instrument features a built-in clock function, allowing for timely time correction at any moment.

12. The instrument is equipped with an auto-calibration function. After prolonged use, the instrument can be calibrated and adjusted to ensure its measurement accuracy.

13. The instrument employs high-precision pressure sensors and world-leading magnetorheological fluid technology products.

14. The instrument is equipped with a variety of switch transition connectors, enabling verification of most switches without disassembly.

Technical Specifications

Measurement accuracy:

Greater than 0.2

Pressure display resolution:

0.0001MPa

Pressure measurement range:

0~1.0000 MPa

Temperature measurement range:

-40~120℃

Temperature measurement error:

≤±1.0℃

Working principle:

Employs built-in steel cylinders for automatic pressurization, eliminating the need for an external gas supply.

SF6 gas emissions

Minimal SF6 gas emissions throughout the entire verification process.

Display mode

Industrial-grade 8.4-inch extra-large touch LCD screen, displaying both measured values and pressure values at standard temperature on the same screen.

Operation Method

Fully Chinese-language, fully touch-based operation—simple, intuitive, and convenient.

Data Storage

Up to 1,000 sets of measurement data can be stored.

Data Printing

Built-in microprinter for printing test data

PC Communication Method

RS232 serial communication (USB optional)

Power supply:

Charging adapter input: AC 220V ±10%, 50Hz

Charging adapter output: DC 8.4V (with protection)

Total system power consumption

<10W

Instrument weight:

Host: 10.0 kg

Host external dimensions

Length 460 mm × Width 380 mm × Height 180 mm

MCMD-CSF6 Gas Density Relay Calibration Instrument

MCMD-CSF6 Gas Density Relay Calibration Instrument

Model: MCMD-C Quantity: 1 set Manufacturer: Hubei MECI Electric Power Equipment Co., Ltd

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Tel： 86-13307164232

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