XHJB600 SF6 Gas Density Relay Calibration Instrument — a portable device dedicated to the standard conversion of SF6 gas pressure, with automatic calibration of SF6 density meters and pressure gauges.
The XHJB600 SF6 Gas Density Relay Calibration Instrument is a portable device dedicated to the standard conversion of SF6 gas pressure. It also supports automatic calibration of SF6 density meters and pressure gauges, making it a practical field tool for working with SF6 gas density relays.
Performance Characteristics
3.5-inch color LCD display with a Chinese operation interface, simple and convenient to use.
Simultaneously displays current pressure, equivalent pressure at 20°C, and ambient temperature.
Capable of storing 100 groups of test data permanently.
RS-232 interface available for uploading test data to a PC.
Instrument pipeline equipped with quick connectors for easy operation and low leakage.
Self-calibration function allows calibration and correction after prolonged use.
Utilizes a high-precision pressure sensor and magnetic fluid technology.
From Field Reading to 20°C Equivalent
SF6 density relays are judged on the equivalent pressure at 20°C, not on the raw field reading. The XHJB600 performs that standard conversion for you and puts the values side by side, so the operator sees the whole picture in one view:
| Displayed Value | What It Tells You |
|---|
| Current pressure | The pressure actually present in the SF6 gas at the moment of testing. |
| Equivalent pressure at 20°C | The standard-converted pressure at 20°C, used to judge the density relay’s condition. |
| Ambient temperature | The surrounding temperature that the conversion depends on. |
Together with the built-in self-calibration function and the quick-connector pipeline, the instrument keeps both the reading and the calibration reliable over a long service life.
Technical Data
| Measuring range | 0–1.000 MPa |
| Measuring accuracy | Class 0.25 |
| Pressure display resolution | 0.001 MPa |
| Temperature measuring range | -20°C–60°C |
| Temperature resolution | 0.1°C |
| Operating power | AC 220V ±10% 50Hz; DC 12V/1.5A |
The XHJB600 is aimed at the teams responsible for keeping SF6 density relays accurate and traceable:
Power grid metrology and calibration centres running SF6 density relay calibration and standard pressure conversion.
High-voltage switchgear manufacturers calibrating SF6 density meters and pressure gauges on the production and factory test line.
Substation maintenance teams carrying out periodic SF6 relay calibration with a portable, low-leakage instrument.
Power test and research institutes and third-party calibration service providers needing Class 0.25 accuracy.
Frequently Asked Questions
What is the XHJB600 used for?
It is dedicated to the standard conversion of SF6 gas pressure, and it also supports automatic calibration of SF6 density meters and pressure gauges.
What does it display at the same time?
It simultaneously displays the current pressure, the equivalent pressure at 20°C, and the ambient temperature on its 3.5-inch color LCD.
What are the measuring range and accuracy?
The measuring range is 0–1.000 MPa with Class 0.25 accuracy and a pressure display resolution of 0.001 MPa. The temperature range is -20°C–60°C with 0.1°C resolution.
How is test data handled?
The instrument permanently stores 100 groups of test data and provides an RS-232 interface for uploading test data to a PC.
How does it stay accurate over time?
A self-calibration function allows calibration and correction after prolonged use, and the instrument uses a high-precision pressure sensor with magnetic fluid technology. Its pipeline is fitted with quick connectors for easy operation and low leakage.
Portable, Accurate and Field-Ready
With a 3.5-inch color display, quick connectors and a self-calibration function, the XHJB600 brings standard SF6 gas pressure conversion and relay calibration to the field. Please contact us for configuration details.
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