SA-939SB3 three parameter combination probe

This combination probe for monitoring the safe operation of wind turbine gearboxes integrates sensing, conversion, and transmission circuits for measuring oil temperature, oil level, and vibration signals inside, directly outputting the corresponding safety parameters4～20mAStandard current signal can be connected to various general-purpose secondary instruments or computer digital acquisition and monitoring systems.

Probe temperature measurement uses platinum resistance sensors and semiconductor integrated devices; The oil level measurement adopts the principle of capacitive sensing; A sensor used for vibration measurement that directly obtains the acceleration signal of mechanical vibration, which is amplified, bandpass filtered, integrated once, and true RMS（RMS）Transformer, which converts the vibration waveform within the effective bandwidth into true effective value conversion; The final oil level, temperature, and vibration are all generated4～20mAOutput.

Temperature measurement characteristics:

Lubricating oil temperature measurement range:0～100 ℃, temperature measurement comprehensive error: ±1℃

Oil level measurement characteristics:

Lubricating oil level measurement range:0～50㎜（10The oil level measurement error is:<=±1㎜

ambient temperature-40～65℃(Extreme temperature resistance)-50～150℃）

Vibration measurement characteristics:

Vibration measurement range:0～20 ㎜/s Measure the effective values of output and vibration velocity（RMS）Proportional, vibration measurement frequency range:10～1000HZVibration measurement error:<=±1㎜/s

Signal output characteristics:

Active current type output:DC/4～20mA Require passive resistive loads. Load resistance:< 300ohm