ZMJ60XDR Density Monitor
ZMJ60XDR Density Monitors are used to monitor SF6 gas density in sealed tanks. They are applied to indicate the gas density and to provide signal outputs when the density reaches the set values. Furthermore, it can transmit the real-time SF6 gas density data remotely, to achieve online remote monitoring function. They are designed to monitor High Voltage systems. They can provide multiple solutions to support new substations and the renovation and upgrading of existing substations.
Application of ZMJ60XDR Density Monitor
SF6 Gas Insulated Swithchgear (GIS)
SF6 Insulated Circuit Breaker
SF6 Insulated Pole-Mounted Switch
SF6 Insulated Transformer
SF6 Insulation Current Transformers or Voltage Transformers
SF6 Insulated Bus System
Features of ZMJ60XDR Density Monitor
Higher accuracy from reference chamber temperature compensation technology.
Suitable for indoor or outdoor installation
Micro-switch that can switch freely between normally open and normally closed points
Up to 4 pairs of switches, multiple options such as double alarms and double locks can be realized, making monitoring more secure and reliable
High shock resistance, reducing need for oil and the potential hazard of oil leakage.
Normally closed contact will not false alarm due to vibration.
RS485 bus interface, easy to expand current system for telemetry and remote control functions.
Strong EMC capability
Technical Data of ZMJ60XDR Density Monitor
| Scale range: | -0.1 ~ 0.9MPa |
| Accuracy of set pressure point: | ±10 kPa @ –30～+60 °C（gas） |
| Accuracy of indication: | ±10 kPa @ –30～+60 °C（gas） |
| Pressure： | ±0.5%FS |
| Temperature： | ±1℃ |
| Pressure at 20℃： | ±1.0%FS |
| Degree of protection: | IP65 |
| Ambient condition: | -30℃~ +60℃, relative humidity：≤95%RH |
| Leakage rate: | ≤1 x 10-9Pa·m3/s (Helium leak inspection) |
| Pressure connection: | M20 x 1.5 (customizable) |
| Installation method: | Radial or Axial |
| Electrical connection: | Pluggable connector, wire diameter 0.2～2.5 mm2 |
| Insulation resistance: | >100MΩ (DC500V) |
| Withstand voltage: | 2kV, 50/60Hz, 1min |
| Contact type: | Microswitch |
| Impact rating: | 50 g |
| Contact electrical parameters: | 10(1.5)A, 250V AC 0.1(0.05)A, 250V DC |
| Watch glass: | Laminated safety glass |
| Weight: | ≈1.2kg |
| Pressure element: | Bellow |
Technical Parameters for Remote Module
Operating voltage: 10~30VDC
Power consumption :<0.5W
Communication mode :RS485
Communication protocol: Modbus RTU
Baud rate: 9600bps
EMC tests:
IEC61000-4-2: Level 4
IEC61000-4-3: Level 3
IEC61000-4-4: Level 4
IEC61000-4-5: Level 4
IEC61000-4-6: Level 3
IEC61000-4-8: Level 5
IEC61000-4-9: Level 5
IEC61000-4-10: Level 5
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