SF6 Testing Instrument
LQHV-615 Intelligent SF6 Density Relay Calibrator
Essential Tool for SF6 Switch Maintenance
This precision calibrator verifies SF6 gas density relays in high-voltage switches, ensuring compliance with DL/T596-2021 standards. Its patented temperature compensation technology eliminates the need for constant temperature chambers - perform accurate 20℃ equivalent pressure conversions in any field conditions.
Product Parameters
Technical Parameters
| Measuring range | Dew point value:-80℃~+20℃ |
| Moisture content:0~19999uL/L | |
| Accuracy of measurement | ±1.0℃(-60℃~+20℃) |
| ±2.0℃(-80℃~-60℃) | |
| The resolution of the | Dew point value: 0.1℃ |
| Moisture content: 1uL/L | |
| Response time(+20℃,0.1mpa) | 63% need 5s, 90% need 45s(-80℃~+20℃) |
| 63% need 10s,90% need 240s( +20℃~-80℃) | |
| Sampling flow | 0.6L/min±20% |
| Pressure range | 0～1.0Mpa |
| The use of temperature | -20℃~+60℃ |
| Environmental humidity | 0～100%RH |
| Charging time | 4 hours |
| The whole machine size | 250×150×300mm3 |
| The weight of The machine | 4.4kg |
Core Specifications
Measurement Range: 0-1.0MPa (custom ranges available)
Accuracy: ±0.1% FS (with imported pressure sensors)
Temperature Compensation: -30℃ to +60℃ ambient range
Contact Testing: Supports 3 contact groups (NO/NC configurations)
Why Choose This Density Relay Tester?
Advanced Compensation Technology
Our dynamic P-T algorithm automatically converts readings to 20℃ equivalents, solving the #1 challenge in field calibration - temperature variation errors.
Military-Grade Components
German pressure sensors + 32-bit microprocessor deliver lab-grade accuracy (±0.05% repeatability) in rugged field conditions.
Zero-Gas-Waste Design
Patented low-flow verification consumes 80% less SF6 gas than conventional methods, saving $420/year in gas costs (avg. 50 tests/year).
Compliance & Applications
Meets Global Standards:
DL/T596-2021 (China Power Equipment Testing)
IEC 62271-1 (HV Switchgear Standards)
ANSI C37.122 (US GIS Standards)
Critical Use Cases:
Preventive maintenance for GIS substations
Troubleshooting false alarms in circuit breakers
Commissioning new SF6 equipment
Gas recycling plant quality control
Smart Data Management
500-test memory with timestamped records
USB/PC software generates Word/PDF reports
On-board printer for instant field reports
Includes 2-year warranty + free calibration software updates
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