QBJ-31ZW axial displacement monitoring and protection instrument is compatible with TSI system for axial displacement monitoring

Compatible with TSI system for comprehensive axial displacement monitoring and protection.

This monitoring and protection instrument, equipped with a QBJ-3800XL eddy current sensor, measures and protects against critical parameters including axial displacement and differential expansion of industrial units. The system utilizes non-contact eddy current sensor technology, widely applied across power generation, machinery, chemical processing, metallurgical operations, and various industrial sectors.

Eddy current sensors operate by generating high-frequency electromagnetic fields that interact with measured objects to determine displacement. This technology offers significant advantages including extensive linear range, high precision, exceptional sensitivity, broad frequency response, stable temperature characteristics, and immunity to interference from oil, steam, or other industrial media.

• Axial displacement output display with separate positive/negative alarm and danger relay contact outputs
• Range configuration with current output corresponding to 4-20mA
• Disconnection detection protection with relay output blocking and 5-second delay recovery
• Gap voltage detection and output display with automatic return to displacement detection
• Customizable alarm/danger value settings within operational range
• Four-level selectable alarm/danger relay output delay settings (0.1S, 1S, 3S, 6S)
• Alarm/danger value memory with date recording (year, month, day)
• Optional RS485 communication interface
• Automatic return to measurement state after inactivity period

• RS485 half-duplex asynchronous communication mode
• Data transmission interrupt polling mode operation
• String-based data transmission protocol
• 9-bit data format with 8 data bits and 9th bit for address/data designation