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DDM60R Digital Density Monitor

DDM60R Digital Density Monitor are used to monitor the density of SF6 gas in sealed tanks . It has real-time re- mote transmission of SF6 gas density change data, real- izes online remote monitoring function, and can display the gas density digitally on site. When the density value reaches the set value, the contact output alarm signal. Suitable for medium voltage system monitoring. It can be used in the new substation building and the renova- tion and upgrading of existing substation.

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Dimensions1

SF₆ Gas Insulated Swithchgear (GIS)
SF₆ Insulated Circuit Breaker
SF Insulated Pole-Mounted Switch
SF₆ Insulated Transformer
SF₆ Insulation Current Transformer or Voltag Transformer
SF₆ Insulated Bus System

Local digital display and control.
The microswitch is used as the signal output device to realize the free switching between normally open and normally closed points.
Temperature Compensated.
The alarm value can be set on site and can be ap- plied to cabinets with different alarm values.
Small size, installation interface can be customized, convenient and reliable.
RS485 bus interface, easy to do the system expan- sion, and to achieve telemetry, remote control func- tions. Strong EMC capability.

Remote part of the main electrical performance indicators and specifications

Operating voltage	10~30VDC	EMC Class	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
Power consumption	<1W(max. 1.5W)
Communication mode	RS485
Communication protocol	Modbus RTU
Baud Rate	9600bps

Technical parameters

Technical parameters
Scale range	-0.1 ~ 0.9MPa
Accuracy of transmitter	Pressure：±0.5%FS Temperature：±1℃ Pressure at 20℃: ±1.0%FS
Degree of protection	IP65
Ambient conditions	-40℃ ~ +70℃ , 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	Preset cable
Insulation property(contact part)	Insulation resistance: >100MΩ (DC500V) Power frequency withstand voltage: 2kV, 50/60Hz, 1min
Contact type	Magnetic holding electronic relay
Impact rating	30 g
Contact electrical parameters	Maximum switching voltage：380VAC/240VDC Maximum switching current：5A
Watch glass	Laminated safety glass
Weight	0.3kg