Technical Specifications of Explosion-proof Flow Switch NK600EXD

Product Description‌

The NK600EXD is a corrosion-resistant, explosion-proof flow switch designed for both pneumatic and hydraulic systems. It provides reliable monitoring for:

Coolant/lubricant flow interruption detection

Pump dry-run protection

Key Technical Parameters‌

Category Specifications

• Measurement Range‌ 1–150 cm/s (water), 3–300 cm/s (oil), 20–2000 cm/s (air)
• Output Signals‌ PNP, NPN, Relay (SPDT with NO+NC contacts)
• Power Supply‌ 24V DC ±20%
• Current Rating‌ Max. 400mA (PNP/NPN), 1A @ 48V AC/DC (relay)
• Standby Current‌ ≤80mA
• Flow Indication‌ 6-segment LED bar
• Setting Method‌ Potentiometer adjustment
• Pressure Rating‌ 100 bar
• Temp. Gradient‌ ≤4°C/s (medium)
• Response Time‌ 1–13s (typical 2s)
• Initialization Time‌ 8s
• Electrical Protection‌ Reverse polarity, short-circuit, overload protection
• Explosion Proof‌ ExdII CT6
• IP Rating‌ IP67
• Temperature Ranges‌ ‌Medium‌: -20–100°C, ‌Ambient‌: -20–80°C, ‌Storage‌: -20–100°C
• Connection‌ M12 connector
• Materials‌ ‌Probe/Housing‌: Stainless steel
• Repeatability‌ ±2%

Ordering Notes‌

Verify the following before finalizing orders:

• Model compatibility
• Measurement range accuracy
• Output signal type
• Optional accessories