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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 multi- ple solutions to support new substations and the reno- vation and upgrading of existing substations.

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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

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 stain- less steel.
The on-screen display value and output signals are im- mune 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-pres- sure alarm, dual alarm or double locking and many other options, making the monitoring more secure and reliable.

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 X 1.5 sealing head cable size: 1.5mm2 recommended, upper limit 2.5mm2
Insulation properties	Insulation resistance: >100 MΩ (500 V DC) Withstand voltage：2kV，50/60 Hz, 1min
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

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）