ZMJ100P Density Monitor
ZMJ100P Density Monitors are used to monitor SF6 gas density in sealed tanks. They are applied to indicate gas density and to provide signal outputs when the density reaches preset threshold values. 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.
Drawing of ZMJ100P Gas Density Monitor
Application of ZMJ100P Gas Density Monitor
SF6 Gas Insulated Switchgear (GIS)
SF6 Insulated Circuit Breakers
SF6 Insulated Pole-Mounted Switch
SF6 Insulated Transformers
SF6 Insulated Current Transformers or Voltage Transformers
SF6 Insulated Busbar Systems
Feature of ZMJ100P Gas Density Monitor
With temperature compensation, ensuring higher measuring accuracy
Suitable for indoor or outdoor installation
AISI 304 hermetically sealed stainless steel case
Gas line connecting parts are made of AISI 316 stainless steel
The on-screen display value and output signals are immune from the impact of external environment, such as altitude
Electric contact switch design can ensure the precise and stable SF6 gas density monitoring
Up to 4 sets of switch contacts can achieve over-pressure alarm, dual alarm or double locking and many other options, making the monitoring more secure and reliable.
Technical Data of ZMJ100P Gas Density Monitor
| Case diameter: | 100mm |
| Scale range: | -0.1～0.9MPa (customizable) |
| Accuracy: | ±1.0%FS（+20±1℃），±1.8%FS（-20℃～+60℃）（gas phase） |
| Degree of protection: | IP65 |
| Ambient conditions: | -20°C～+60°C, relative humidity ≤ 95%RH |
| Leakage rate: | ≤1 × 10-9 Pa·m3/s (Helium leakage inspection) |
| Process connection: | M20 × 1.5, (customizable) |
| Installation method: | Radial or Axial |
| Electrical connection: | Plug-in connection M20 × 1.5 sealing head |
| cable size: | 1.5mm2 recommended, upper limit 2.5mm2 |
| Insulation resistance: | >100 MW (500 V DC) |
| Withstand voltage: | 2kV, 50/60 Hz 1 min |
| Contact type: | Magnetic snap-action switch 80%Ag, 20%Ni, 10µm Gold plated |
| Impact rating: | 50g (oil-filled), 30g (non-oil-filled) |
| Contact electrical parameters: | 30W/50VA, 1A (upper limit ) 220VDC/380V 50/60Hz (upper limit ) |
| Watch glass: | Laminated safety glass |
| Weight: | ≈1.0kg |
| Pressure element: | Bourdon tube |
Options of ZMJ100P Gas Density Monitor
Oil-filled
Withstand voltage: 2.5kV 50/60 Hz, 1min
Wide temperature range ：Optional-40℃～+60℃or -60°C～+60°C
Measuring medium：SF6、Air、N2、SF6+N2 and other gases
Optional measurement accuracy：±1.6%FS（+20±1℃），±2.4%FS（-20℃～+60℃）（gas phase）
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