Description

Technical Parameters

Product Overview & Applications

Product Overview

it is an intelligent SF6 gas density relay calibration instrument. The calibrator adopts high-precision pressure sensor and high-rate A/D converter, combined with 32-bit high-performance microprocessor can perform performance verification on various SF6 gas density relays, can accurately measure the pressure value at the current temperature when the signal is acting, automatically complete the standard pressure conversion of any ambient temperature to 20 °C, and has the functions of printing, storage and U disk transfer,while automatically identifying faults during the test process and automatically judging the status of density relay contacts. This product is easy to carry, simple to operate,
high test accuracy, strong stability and good reliability, reflecting the characteristics of "intelligent" instrument.

Applications

1. Electrical Substations & Switchyards:Calibration of SF6 density relays in circuit breakers, disconnect switches, and gas-insulated switchgear (GIS).
2.Power Transmission & Distribution Networks:Maintenance of high-voltage equipment (e.g., 66kV–800kV circuit breakers) reliant on SF6 gas.
3.Railway Electrification Systems:Testing SF6 relays in traction power systems and railway substations.
4. Industrial Power Plants & Manufacturing Facilities:Calibrating SF6 relays in critical circuit breakers protecting heavy machinery (e.g., steel mills, data centers).
5. Wind and Solar Farms:Servicing SF6 breakers in renewable energy substations.
6.Gas-Insulated Substations (GIS):Precision calibration of density monitors in compact GIS installations.
7. Maintenance and Service Companies:On-site or workshop-based calibration services for utility clients.

Key Features & Advantages

1. High test accuracy
2. Highly intelligent
4. Friendly man-machine interface
5. Supporting transition joints
6. Less air consumption
7. Support data storage
8. Support printing
9. U disk transfer
10. Easy to carry
11. Powerful PC software

Operating Conditions

Environmental Conditions

Temperature:0°C to 45°C (operating range)

Humidity:<85% RH (non-condensing)

Altitude:<2000 meters above sea level

Environment:Clean, dry, well-ventilated area

Avoid:Rain, dust, corrosive gases, strong electromagnetic fields

Additional Information

Included Accessories:

1. Standard Accessories:

Main Calibration Unit×1

SF6 Gas Hose Set(high-pressure, sealed) ×2

Quick-Connect Couplings(various sizes) ×1 set

Pressure Adapters(for different relay types) ×1 set

Digital Temperature Probe×1

Communication Cable(USB/RS232) ×1

Power Cord(with grounded plug) ×1

Protective Carrying Case×1

2. Connection Components:

Sealing Gaskets and O-rings(assorted sizes) ×1 set

Pressure Fittings(brass/stainless steel) ×6

Extension Hoses(1m, 2m lengths) ×2

Bleed Valve Adapter×1

Gas Flow Control Valve×1

Maintenance & FAQs

Q: What is an SF6 density relay calibrator used for?

A: It is used to test, calibrate, and verify the accuracy of SF6 gas density relaysinstalled in high-voltage equipment like circuit breakers and GIS (Gas-Insulated Switchgear). It ensures the relays trigger alarms or shutdowns at the correct gas pressure levels

Q: Why is calibrating SF6 density relays important?

A: SF6 gas is critical for insulation and arc quenching in high-voltage equipment. If the density relay fails or is inaccurate:

Safety Risk:Low gas density can lead to insulation failure or explosions.

False Alarms:Incorrect readings cause unnecessary shutdowns.

Gas Leaks:Undetected leaks waste expensive SF6 gas and harm the environment.

Q: How does the calibrator work?

A: It connects to the density relay via sealed hoses.

Applies precise pressure (simulating gas density) using an internal pump or external gas source.

Measures the relay's response (alarm/lockout points) and compares it to standard values.

Adjusts or validates the relay's settings.

Q: Can it be used on energized equipment?

A: No.The equipment must be de-energized, isolated, and depressurizedbefore calibration. Safety protocols for SF6 gas handling must be followed.

Q: What types of relays can it test?

Mechanical density relays

Digital (smart) density monitors

Pressure gauges with contacts (alarm/lockout)

Single-stage or two-stage relays.

Hot Tags: sf6 gas density relay calibrator, China sf6 gas density relay calibrator manufacturers, factory

Technical Specifications

Measurement accuracy	0.2 F·S
Pressure display resolution	0.001MPa
Pressure measurement range	0~0.99MPa
Temperature measurement range	-20℃~80℃
Temperature measurement error	±0.5℃
SF6 gas emissions	Very little SF6 gas emissions are emitted during the entire calibration process
How it is displayed	Industrial-grade 7-inch full-color high-definition LCD screen, while displaying the measured pressure value and the equivalent pressure value at 20°C
Mode of operation	Touch screen
How to print	Array printing
Data storage	Up to 1000 measurement data can be stored
Working power supply	24V lithium battery power supply
Power consumption of the whole machine	≤20W
Main unit dimensions/weight	400×320×160(mm³)/ 6.2kg
Accessory box size/weight	400×370×200(mm³) / 4.8kg

SF6 Gas Density Relay Calibrator