ZMJ100XD Series Density Monitors
These instruments are used to monitor SF6 gas density in sealed tanks. They are applied to indicate gas density and to provide a signal outputs when the density reaches preset threshold values. They are designed to monitor High Voltage systems.
Drawing of ZMJ100XD Series Density Monitors
Application of ZMJ100XD Series Density Monitors
Gas Insulated Switchgear (GIS)
Gas Insulated Lines (GIL)
SF6 circuit breakers
Gas insulated busbar systems
Features of ZMJ100XD Series Density Monitors
Using gas compensation, greater precision of the set point
Class 1.0 full scale display
Indoor or outdoor installation suitable
The micro switch will switch freely between open and closed points.
Up to four node pairs can be realised with several choices, such as double alarms and double locks, making monitoring more safe and efficient
Strong resistance to shock
No need to fill oil, no danger of oil leakage
Normally closed contacts will not falsely alarm due to vibration
Technical Data of ZMJ100XD Series Density Monitors
| Scale range: | -0.1 to 0.9MPa (customizable) |
| Set point Accuracy: | Class 1.0 （±10 kPa） @ –30...+50 °C |
| Indication accuracy： | Class 1.0 （±10 kPa） @ 20 °C |
| Degree of protection: | IP65 |
| Ambient conditions: | -40°C to 60°C |
| Leakage rate: | < 1 × 10-9 Pa·m3/s , Relative humidity ≤ 95%RH |
| Pressure connection: | M20 × 1.5, (customizable) |
| Location: | Bottom or back |
| Electrical connection: | Connect the plug when plugging, wire diameter 0.2...2.5 mm2 |
| Insulation properties: | Insulation resistance: >100 MW (500 V DC) |
| Withstand voltage: | 2kV, 50/60 Hz 1 min (to case) |
| Contact type: | Micro Switch |
| Impact rating: | 50g |
| Contact ratings: | 30W/50VA, 1A max. |
| 220VDC/380V 50/60Hz max. |
| Window: | Laminated safety glass |
| Weight: | 1kg |
| Pressure sensitive components: | imported bellows and Bowden tubes |
Options of ZMJ100XD Series Density Monitors
Different measuring ranges
Wide temperature range -60°C to +60°C
Can detect SF6, Air, N2, SF6+N2 and other gases
Remote transmission function
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