Product Overview
MOEORW-WQM80 is an all-in-one self-pressurizing calibrator with built-in air storage tank and electric booster pump, eliminating external gas cylinder configuration for field testing. The device adopts 32-bit ARM control system and imported high-precision pressure sensors with Class 0.1 measurement accuracy, realizing fully automatic inflation, pressure stabilization and deflation cycles without manual air source adjustment. It integrates density relay contact verification, indication error test and contact resistance measurement functions, automatically converting real-time ambient pressure to standard P20 value. The built-in pump auto-supplements pressure when tank pressure is insufficient during testing, suitable for remote outdoor sites without portable gas cylinders, widely applied in unattended substation inspection and heavy-duty batch calibration work.
Technical Parameters
|
Item |
Specification |
|
Display |
7-inch 800×480 color touch screen |
|
Measurement Accuracy |
Class 0.1 |
|
Pressure Calibration Range |
0 ~ 1.0 MPa, resolution: 0.0001 MPa |
|
Contact Resistance Test Range |
0 ~ 200 Ω, resolution: 0.01 Ω, precision ±5% |
|
Temperature Measurement Range |
-50°C ~ 150°C, precision ±0.5°C, resolution 0.1°C |
|
Power Consumption |
5 W (standby); Max 20 W (automatic boosting) |
|
Gas Storage System |
Internal integrated booster pump & air tank, auto pressure replenishment |
|
Storage Capacity |
Up to 1000 groups of complete test records |
|
Print System |
High-speed thermal printer supporting full Chinese test reports |
|
Power Supply |
Built-in lithium battery / AC 220 V 50 Hz external power |
|
Host Dimension |
460 × 380 × 320 mm |
|
Net Weight |
15 kg |
|
Testable Contact Combinations |
Arbitrary combination of single/double alarm, single/double lockout, overpressure contact |
Main Functional Features
1.Hardware & Structural Design Integrated closed air circuit with internal booster pump, no external gas cylinder required; independent test gas port, signal acquisition terminal, temperature probe socket and grounding terminal; large-size touch screen with clear real-time pressure, temperature and contact state display; built-in data loss protection chip to retain records after power failure.
2.Core Performance Advantages Automatic pressure replenishment logic: the pump starts automatically when tank pressure lower than threshold and stops upon reaching upper limit; multi-mode indication calibration (full range / rated pressure / hysteresis); one-cycle automatic inflation → pressure holding → deflation without human intervention; automatic calculation of P20 error and contact switching difference after test completion.
3.On-Site Application Value No SF6 test gas consumption, reducing long-term operation cost and greenhouse gas emission; adaptable to remote outdoor substation sites without portable gas supply; supports U disk CSV data export and on-site report printing; multi-joint transition accessories match most mainstream SF6 switch models without relay disassembly.
Application Fields
1.Remote unattended substations, mountain wind farm booster stations without gas cylinder carrying condition
2.Electrical testing institutions focusing on large-volume batch calibration of density relays
3.High-voltage complete equipment manufacturers production line inspection
4.Power grid emergency maintenance teams for rapid on-site fault verification
5.Metallurgy, chemical industry self-owned high-voltage power distribution station maintenance
Applicable Standards
1.DL/T 259-2012 Calibration Regulation for SF6 Gas Density Relays
2.DL/T 596-2021 Preventive Test Code for Power Equipment
3.JJG 1073-2011 Verification Regulation of Pressure-Type SF6 Gas Density Controllers
4.GB/T 22065-2008 Pressure-Type SF6 Gas Density Controllers
5.State Grid Substation Inspection General Management Regulation Volume 39
FAQ
Q: Why does the booster pump run continuously during testing?
A: The internal air tank pressure is lower than the test threshold; wait for automatic pressure replenishment to complete before formal testing.
Q: Is external gas cylinder allowed to connect to the device?
A: Unnecessary, the built-in self-pressurizing system meets all calibration pressure requirements; external air source access is not designed.
Q: What temperature environment is prohibited for long-term instrument storage?
A: Storage environment must maintain -20°C ~ 70°C with relative humidity ≤90%, corrosive gas atmosphere is forbidden.
Q: Can I stop the test halfway and restart directly?
A: Click "Stop" button, the system automatically releases pipeline residual pressure, reset all parameters and restart calibration procedure.
Q: Does the device support firmware upgrade via USB flash drive?
A: Yes, firmware upgrade operation is supported through the USB data interface.
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