SDJ-501 Shaft Vibration Protection Transmitter with 4-20mA Output and Two-Stage Alarm Relay for Real-Time Monitoring of Rotating Machinery
Price:
Negotiations
MOQ:
1
Delivery Time:
Negotiable
Brand:
OEM
Product Description
SDJ-501 Shaft Vibration Protection Transmitter
The SDJ-501 is a single-channel speed monitoring and protection transmitter designed for rotating machinery with sliding bearings. This advanced transmitter provides real-time rotational speed measurement and protection for equipment including steam turbines, fans, compressors, motors, and pumps.
Key Applications
Ideal for rotating machinery with various sliding bearings, including steam turbines, fans, compressors, motors, pumps, and similar industrial equipment.
Output Interface Features
- 4-20mA output terminals (4-20mA "+" and "-")
- On-site LED displays showing machine operating status (OK, alarm, interlock Danger, disconnection BREAK)
- Isolated two-stage alarm relay output terminals SPDT
- Vibration values displayed on-site and via PLC or DCS systems
- Buffered output of original signal for status monitoring instruments
- Flexible power supply options: 24VDC, 220VAC, or 110VAC
Continuous Speed Monitoring System
The SDJ-501 provides online real-time measurement of rotor speed while simultaneously outputting two levels of alarms. This enables early detection and protection of rotating machinery, extending equipment life and reducing maintenance requirements.
Installation & Setup
For units with existing eddy current probe systems, installation involves simple wiring connection and alarm point setting. The measurement point requires a groove engraved on the shaft (minimum 2.5cm deep and 7mm wide) for probe installation.
Factory Pre-Calibrated
All parameters are pre-adjusted and calibrated before leaving the factory. Typically, no further adjustments or calibrations are required after installation - simply connect the corresponding cables for immediate operation.
Adjustable Parameters
- Two-stage alarm point settings
- 4-20mA output zero point "ZERO"
- Instrument full-scale range calibration
- Alarm reset ("RESET") functionality
Technical Specifications
| Output Type | Active 4-20mA |
| Maximum Load | Up to 750Ω |
| Wiring Configuration | 3-wire protection transmitter |
| Relay Type | SPDT single-pole double-throw |
| Maximum Relay Load | 2A |
| Grounding Requirement | Single-point grounding system |
Customization Options
The SDJ-501 protection transmitter can be customized to meet various field requirements, with different full-scale ranges available for selecting total speed values. A low-frequency option is also provided for measuring zero speed of steam turbines.
Note: For 220VAC or 110VAC power supply options, a separate DC +24V converter power supply is required for isolated power supply.
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Company
OUTER ELECTRONIC TECHNOLOGY (HK) LIMITED
Location
NO. 7-A5, ZHONGHANGBEIYUAN BUILDING, 42 ZHONGHANG ROAD, HUAQIANGBEI SUBDISTRICT, FUTIAN DISTRICT, SHENZHEN , CHINA
Contact Person
Biona