KOBOLD – NE‑304 – Dual‑Channel Electrode Relay / Conductive Level Monitoring

The KOBOLD NE‑304 is a dual‑channel electrode relay designed for reliable conductive liquid level monitoring and control. Compatible with KOBOLD conductive probes (NES, NEH, NEW, LNK series), it supports two independent level sensors—ideal for pump-up/pump-down or high-/low-level control. DIN‑rail or wall mountable, this rugged relay features adjustable sensitivity, LED diagnostics, and SPDT relay outputs for seamless integration in industrial fluid systems.

Key Features:

• Model: NE‑304 (dual‑channel electrode relay)  

• Brand: KOBOLD Messring GmbH  

• Channels: Two independent electrode circuits for multi-point sensing  

• Supply Options: 230 VAC / 110 VAC / 24 VAC ±15% @ 50–60 Hz; ~4 VA power consumption  

• Electrode Excitation: Max 10 VAC, 0.5 mA; sensitivity adjustable 0–50 kΩ; suitable for ≥ 20 µS/cm conductivity  

• Response Time: Approx. 1 s  

• Outputs: Two floating SPDT relays rated up to 250 VAC @ 5 A (600 VA)  

• Enclosure: Makrolon® housing; IP 40 rated; terminals IP 20; DIN‑rail or wall mount  

• LED Indicators: Power LED (green), fault/status LEDs (red) per channel  

• Operating Range: –20 °C to +60 °C; dimensions 75 × 55 × 110 mm