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ZMJ100PR Density Monitor

ZMJ100PR Density Monitor is used to monitor the den- sity of SF₆ gas in the sealed gas tanks, which can locally display the gas density on-site, and send alarm signals 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. Ideally suited for the high voltage systems. It can be used in the new substation building and the renovation and up- grading of existing substation.

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Drawing

Application

Feature

Technical Data

Options

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

With temperature compensation, ensuring higher measuring accuracy.
Mechatronics design, has precision mechanical struc- ture, and has real-time remote transmission function of electronic signals and on-site dispalyand control.
RS485 bus interface, easy to do the system expan sion, and to achieve telemetry, remote control func tions.
Strong EMC capability.
Suited for different indoor and outdoor installation re- quirements.
AISI 304 hermetically sealed stainless steel case.
The connecting parts are made of AISI 316 stainless steel.
The field display value and output signal are not af- fected by the external environment such as alti tude.
Up to sets of contacts, can achieve a variety ofas dou-ble 4options such alarm and double lock forsafer and more reliable monitoring.

Technical Parameters for Remote Module

Operating voltage	10~30VDC	EMC tests	IEC61000-4-2：Level 4 IEC61000-4-3：Level 3 IEC61000-4-4：Level 4 IEC61000-4-5：Level 3 IEC61000-4-6：Level 3 IEC61000-4-8：Level 5
Power consumption	<0.5W
Communication mode	RS485
Communication protocol	Modbus RTU
Baud rate	9600bps

Technical parameters

Case diameter	100mm
Scale range	-0.1 ~ 0.9MPa(customizable)
Accuracy	±1.0%FS（+20±1℃) , ±1.8%FS（-20℃~ +60℃)（gas）
Degree of protection	IP65
Ambient condition	-20℃ ~ +60℃ realative humidity ≤ 95%
Leakage rate	≤ 1×10-9 Pa·m3/s (Helium leakage inspection)
Process connection	M20 x 1.5 (customizable)
Installation method	Radial or axial
Electrical connection	Pluggable connector, wire diameter 1~ 2.5 mm2 (1.5mm2 recommended)
Insulation property	Insulation resistance: >100MΩ (DC500V) Power frequency with stand voltage: 2kV, 50/60Hz, 1min
Contact type	Magnetic snap-action switch (80% Ag, 20% Ni, 10µm gold plated)
Impact rating	50g(Oil-filled), 30 g(Non-oil-filled)
Contact electrical parameters	30W/ 50VA，1A. max. 220VDC/ 380V 50/ 60Hz max.
Watch glass	Laminated safety glass
Weight	≈ 1.2kg
Pressure element	Bourdon tube

Withstand voltage: 2.5kV，50/60 Hz 1min Oil filled or not
Can detect SF₆, Air, N₂, SF₆+N₂ and other gases Communication: 4-20mA(Two wire)
Wider temperature range: optional -40℃ ~ +60℃ or -60℃ ~ +60℃
Optional measurement accuracy：±1.6%FS（+20± 1℃) , ±2.4%FS（-20℃~ +60℃)（gas phase）