APPLICATION AND FUNCTION OF THE KR-939SB3 PROBE
THE APPLICATION AND FUNCTION OF THE KR-939SB3 PROBE
CORE FUNCTION
1.Multi-parameter Integrated Monitoring
Integrates platinum resistance (oil temperature), thermal conductivity (oil level), and magnetic-electric (vibration) sensing circuits. With a single installation, it can obtain three key state parameters, avoiding the complex wiring and calibration required by single-point sensors.
2.Standard Signal Output and System Compatibility
The 4–20 mA signal has strong anti-interference capabilities and can be directly connected to DCS, PLC, digital display meters, or KR-939B3 monitors to achieve remote real-time monitoring, alarms, and data recording.
3.Fault Warning and Life Assurance
Timely alarms are triggered when oil temperature is too high, oil level is too low, or vibration is abnormal, preventing major faults such as lubrication failure, gear wear, and bearing damage, extending equipment lifespan, and reducing the risk of unplanned downtime.
2.4
| Application | Monitoring Focus | Industry |
| Cooling tower fan gearboxes | Lubrication condition and housing vibration | Power, chemical, metallurgy, HVAC |
| Industrial gearboxes / reducers | Oil temperature, oil level, meshing vibration | Machinery manufacturing, mining, building materials |
| Large motors / pumps / compressors | Bearing oil temperature, oil level, vibration | Petrochemical, water treatment, energy |
Installation and Usage Tips
1.Install on the upper threaded hole of the reducer / equipment, insert the probe into the oil chamber, and ensure that the oil level measurement section covers the normal working range.
2.The oil level measurement requires a non-conductive medium. After powering on, preheat for about 2 minutes, and the response damping is about 1 minute.
3.The signal cable should be shielded and grounded. The load resistance is calculated according to the formula: Rmax = (supply voltage - 15) / 0.02 (Ω).
4.Regularly calibrate the oil temperature and vibration parameters, inspect the seals and probe wear, and ensure long-term stability in harsh industrial environments.
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