ZHJ-301 Trinity Detector Three Parameter Combination Probe

Introduction to ZHJ-301 Cooling Tower Fan Trinity Detector Three Parameter Combination Probe

The three parameter combination probe (oil level temperature vibration combination) is a universal non bus structure combination probe used in the cooling tower fan safety monitoring system by Zhengzhou Hangke Instrument Co., Ltd. It can be connected to various general-purpose secondary instruments or computer data acquisition and control systems (DCS, PLC, etc.) for use.

This combination probe used for monitoring the safe operation of wind turbine gearboxes integrates sensing, conversion, and transmission circuits for measuring oil temperature, oil level, and vibration signals internally. It directly outputs 4-20mA standard current signals corresponding to these safety parameters and can be paired with 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, which directly obtains the acceleration signal of mechanical vibration, and converts the vibration waveform within the effective bandwidth into true effective value (RMS) through an amplifier, bandpass filter, first-order integration, and RMS converter; The final oil level, temperature, and vibration each produce 4-20mA output.

ZHJ-301 Trinity Detector Three Parameter Combination Probe

The external thread form is installed in the threaded hole on the upper part of the fan gearbox (or other tested equipment), and the probe is inserted into the gearbox to obtain the lubricating oil temperature, lubricating oil level, and box vibration signal in the gearbox, and complete the transmission output.

Temperature measurement characteristics: Lubricating oil temperature measurement range: 0-100 ℃, comprehensive temperature measurement error: ± 3 ℃
Oil level measurement characteristics: Lubricating oil level measurement range: -10~40mm, comprehensive error of oil level measurement: ± 5mm (0mm is the oil limit position below the normal oil level of the gearbox, and the measured medium must be non-conductive)
Vibration measurement characteristics: Vibration measurement range: 0-20mm/s, measurement output is proportional to the true effective value (RMS) of vibration velocity, vibration measurement frequency band range: 10-1000HZ, comprehensive vibration measurement error: ± 1mm/s
● Signal output characteristics: Current type output: DC/4-20mA, large load resistance calculation (including transmission line internal resistance) Rmax=(V-15)/0.02 (where V is the supply voltage)
Power supply characteristics: Recommended working voltage: DC/24V ± 2V, no-load working voltage: DC/15V, high overload voltage: DC/36V, large instantaneous working current: 200mA, built-in voltage polarity reversal protection
Environmental characteristics: Environmental temperature range: -20~80 ℃, environmental humidity range: 0~100% (ports sealed with 704 silicone rubber), environmental vibration conditions: not less than 3 times the upper limit of the vibration range.

Zhengzhou Hangke Instrument Co., Ltd

Main business: eddy current sensors, vibration sensors, tachometers, integrated vibration transmitters, integrated eddy current sensors, pressure transmitters, temperature sensors, speed sensors, shaft vibration transmission protection meters, shaft vibration monitoring instruments, shaft displacement monitoring instruments, portable vibration meters, thermal expansion sensors, vibration temperature combination probes, three parameter combination probes, four parameter combination probes