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防风雨3通道4~20mA电流环路保护器,24V

货品号码 AL-CL3W-24
库存
现有数量1
价格表 (未税)
数量 价格
1 - 9 ¥587.30
10 - 24 ¥552.06
25 - 99 ¥516.82
100 + 请来电垂询
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描述

The AL-CL3W-24 is a high performance 3-stage weatherproof protector that provides superior protection of differential or common mode lines from transients and surges. These units will protect up to three 4-20 mA circuits. Provisions for use with shielded cable are provided.

The first stage is comprised of a differential gas discharge tube. Stage two is a pair of current limiting series resistors and the final stage is a low capacitance diode array. The use of three terminal differential gas discharge tubes provides superior common and differential mode protection against conducted transients versus the use of lower cost two terminal tubes. The second stage series resistance limits the power dissipation of the fast diode clamp array in the third stage. This allows time for the slower but higher power gas tubes to flash over. The diode array clamps the leading edge of fast transients to safe levels until the high power gas tubes turn on. This eliminates the damaging leading edge spike that single stage gas tube protectors let leak through. The diode array's low capacitance assures that the suppressor will not degrade the high-speed signals. The 3-stage design can handle higher-level transients than a protector that uses only diodes.

For mounting to masts up to 2 inches in diameter, the HGX-PMT25 mast mounting kit is available (sold separately).

For additional information and complete specifications, see data sheet below.


特征
  • 可保护多达三对线路并有针对屏蔽线缆的结构
  • 防风雨ABS接线盒
  • 可拆卸螺丝端子板
  • 该款为24V型号,还有12V和15V型号可选
应用
  • 4~20mA传感器和控制器
  • 工业过程控制
  • HART路灯控制器
  • 收费亭、吊桥及铁路道口和信号
  • 脉冲输入电路