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20.SS series Shock / Vibration Switch for ATEX Hazardous Area Environments
MURPHY 20.SS Series shockswitch
20.SS防爆电子式振动开关

MURPHY摩菲20.SS是一种电子设备,旨在保护设备免受损坏的冲击或振动。敏感机构检测到过度冲击,并在进一步损坏之前关闭设备。20.SS防震开关安装在经ATEX认证的外壳内,适用于危险区域应用。The 20.SS is an electromechanical device designed to protect equipment from damaging shock or vibration. The sensitive mechanism detects excessive shock and shuts down the equipment before further damage occurs. 20.SS shockswitches are housed in an ATEX certified enclosure, suitable for use in hazardous area applications.

MURPHY 20.SS series Shock / Vibration Switch for ATEX Hazardous Area Environments

 

产品特点

  • Shock and vibration protection
  • Adjustable sensitivity, 0 - 7g
  • Hazardous area, flame-proof case, certified to ATEX Ex II 2 G / Ex d IIC T6 Gb
  • Optional space heater, 24 VDC, 110 VAC or 240 VAC
  • Shock and vibration protection for moving machinery
  • ATEX hazardous area case: ATEX Directive 2014/34/EU EN 60079-0: 2009, EN60079-1: 2007, EN60079-31: 2009 II 2 G / Ex d IIC T6 Gb IP65 environmental protection

 

Description


20.SS系列是设计用于保护设备免受破坏性冲击的电子设备。这些灵敏的机制可以检测到过度的冲击,并在进一步损坏之前关闭设备。一组触点通过磁性锁存机构保持在锁存位置。随着冲击水平的增加,惯性质量对锁闩臂施加力,并迫使其远离磁性锁闩,从而导致锁闩臂分离并操作触点。灵敏度是通过调整磁铁和闩锁臂板之间的气隙获得的。20.SS封装在经ATEX认证的外壳中-见以下规范。The 20.SS series are electro-mechanical devices designed to protect equipment from damaging shock. These sensitive mechanisms detect excessive shock and shutdown the equipment before further damage occurs. A set of contacts is held in a latched position through a magnetic latch mechanism. As the level of shock increases an inertia mass exerts force against the latch arm and forces it away from the magnetic latch causing the latch arm to separate and to operate the contacts. Sensitivity is obtained by adjusting the air gap between the magnet and latch arm plate. The 20.SS is housed in an ATEX certified enclosure – see Specifications below.


Applications


Applications for the 20.SS series include any stationary machinery or equipment where excessive shock can be damaging or poses a threat to normal operations.

Typical applications:
? Cooling fans 冷却风扇
? Engines 发动机
? Pump Jacks 泵组
? Compressors压缩机
? Pumps泵
? Rotating and reciprocating machinery 旋转和往复机械

 

Options

Space Heater
Prevents moisture condensation inside the ATEX housing.

Specifications

Sensitivity range: 0 to 7 g (depending on mounting position)
Contact ratings:
5A @ 125 - 480 VAC;
0.5A @ 125 VDC;
0.25A @ 250 VDC;
2A resistive, 1A inductive @ 0 - 30 VDC.
Manual reset models:
2 SPDT microswitches.
Electrical connection: M20 x 1.5
Operating temperature: –40 to +55?C (–40 to +131?F)
ATEX case: Copperfree Cast Alloy, IP65
Standards: EN 60079-0: 2009, EN60079-1: 2007, EN60079-31: 2009
Execution: II 2 G / Ex d..IIC T6 Gb
Shipping weight: 3.6 kg
Shipping dimensions: 230 x 220x150 mm

 

产品资料下载Literature:

For more information about this product, you can view the related literature here:

 

 

 


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