Multi-Function & Ex d Limit Switch Boxes

• The ALS400 series flameproof valve monitor (Multifunction & Ex d) is a rotary position indication device used in hazardous area of Class I, Division 1, Groups B, C, D T6 (CSA approved), Ex II 2 G Ex db IIC T6 Gb and Ex II 2 D Ex tb IIIC T85°C Db (ATEX & IECEx approved). The device can be armed with not only micro mechanical switch, inductive switch or hermetically sealed switch, but also armed with 4-20mA modular or AS-i field bus module, and digitize the perceived valve position signal and send it to the remote PLC or PC terminal. The visual indicator on the top of the device can also clearly display the valve position for local detection.