High Accuracy Intelligent SF6 Density Relay Calibration Instrument

Overview

SF6 gas density relay is an important component used to monitor the change of SF6 gas density in the SF6 switch body during operation. Due to the infrequent action of SF6 gas density relay in field operation, it often has inflexible action, poor contact and other phenomena after a period of time, and some also show that the temperature compensation performance of density relay becomes worse, Sudden change of ambient temperature often leads to misoperation of SF6 density relay. Therefore, DL / T596-1996 preventive test code for power equipment stipulates that each SF6 switch user shall regularly calibrate the SF6 gas density relay.SF6 density relay calibrator is developed according to DL / t259-2012: Calibration Specification for SF6 density relay issued by the national energy administration.

The instrument adopts 7.0 inch color LCD touch screen for human-computer interaction, which is more convenient to operate. Built in high-capacity rechargeable lithium battery pack provides ultra long standby time. The standard USB interface is configured, and the historical data can be exported to the USB flash disk through the interface.

Technical Indicators

Verification object: alarm 1, alarm 2, locking 1, locking 2, overpressure alarm contact signal

Calibration range: 0 ~ 1MPa (absolute pressure)

Instrument accuracy: grade 0.15

Pressure display resolution: 0.0001mpa

Inlet pressure: 0.9 ~ 1MPa (relative pressure)

External interface: USB (supports USB mobile storage devices no larger than 4GB)

Working environment: temperature - 10 ~ 50 ℃ (the best operating temperature is 5 ~ 50 ℃)

Relative humidity: 5 ~ 90% RH

Display resolution: 800 × 480 (pixel) color touch screen

Storage capacity: 50 groups

Measured contact voltage: DC24V

Temperature acquisition mode: manual / automatic

Air inlet connection: φ 4 butt type quick plug

Air inlet pipe: standard configuration φ 4 / PFA pipe

Measurement connection: φ 4 butt type quick plug

Measuring pipeline: standard configuration φ 4 / PFA pipe

Exhaust connection: φ 4 quick connector

Exhaust pipe: Standard φ 4 / PFA pipe

Mobile power supply: rechargeable lithium battery pack, which can work continuously for 8 hours

Charging voltage: 100 ~ 240VAC, 50 / 60Hz

Overall dimension of host: 325mm long × 275mm wide × Height 140mm

Overall dimension of accessory box: 360mm long × 250mm wide × Height 110mm

Instrument weight: 4.5kg