Product introduction

Explosion-proof miniature limit switch 
 
The explosion-proof miniature limit switch is an on-site instrument panel for displaying information and data signal feedback on the gate valve part of the automation control system software. It is used to output the data signal of the gate valve's apocalyptic or closed part by the amount (contact point) of the gate valve. Procedures control acceptance or electronic computer sample visits, and execute the next procedure after confirmation. The product can also be used as the key of the automation control system software, valve interlocking maintenance and remote control alarm marking, and can be combined with the explosion-proof valve control cabinet to form detailed data signal manipulation and return functions.
 
1. The indicator value is visualized and conspicuous, moisture-proof and reliable;
 
2. The "Quick Position" camshaft is installed according to the spline shaft and the spring yellow, and can be easily adjusted without special tools;
 
3. Multi-contact terminal block, with 8 standardized contacts, safe and convenient wiring;
 
4. Standard two-way cable socket;
 
5. Equipped with anti-hair loss anchor bolts, which are not easy to fall off when screwed on the upper side when disassembling;
 
6. The connecting part of the stainless steel spindle bearing and the fixing bracket conform to the NAMUR specification.
 
1. More terminal blocks can be selected
 
2. There are DPDT, proximity switch, magnetic switch can be selected
 
3, 4 kinds of connection support frames conform to NAMUR specifications
 
4. The product meets both international standards and European standards
 
5. Explosion-proof grade Eexd II B T6, Eexd II C T6, in line with EN50014/50018
 
Features of explosion-proof miniature limit switch:
 
1. The three-dimensional position indicator can clearly display the position of the information gate valve.
 
2. Die-cast aluminum alloy casing, powder coating, compact design, beautiful appearance, reduced gate valve packaging volume, reliable quality.
 
3. Multi-line sockets Double 1/2 NPT tube sockets.
 
4. Data signal feedback device.
 
5. The position of the power switch can be clearly identified by the indicator.
 
6. Multi-contact internal connection with 8 contact points inside the pcb circuit board (6 for the power switch, 2 for the spiral electric hose connection) The plug-in board conforms to the specifications of the small power switch, and the DPDT power switch can be selected and the valve Intelligent transmitter (4~20mA), foot pedal switch, proximity switch, magnetic switch, etc. and can be used for relay connection.
 
7. "Quick position" camshaft; the adjustable camshaft of the travel switch is installed according to the spline shaft and the spring yellow; the position of the power switch camshaft can be adjusted quickly without special tools.
 
8. Replace wiring with PCB board to avoid short circuit failure.
 
9. Working temperature: -20～70℃, moisture-proof, pollution-proof and waterproof grade: IP67, explosion-proof grade: ExdII BT6, Eexd IICT6, in line with EN50014/50018 specifications.
 
10. Double wiring ports, standardized contacts, wiring safety and convenience.
 
11. The support frame is easy to install. There are 4 kinds of support frame that meet the NAMUR standard, and the support frame meets the ISO5211 standard. All rotary electric actuators can be installed very easily.
 
12. Anti-hair loss anchor bolts, the anchor bolts attached to the top cover are not easy to fall off when disassembling.
 
13. Convenient installation, part of the stainless steel spindle bearing connection and fixing bracket conform to VDI/VDE 3845, NAMUR specifications.
 
14. Corrosion resistance.
 
15. There are two kinds of basic type and explosion-proof type.