Jinyu Magnet (Ningbo) Co., Ltd. , https://www.magnetbonwin.com
This type of combined probe applied to the safe operation monitoring of the fan speed reducer integrates sensing, conversion, and transmission circuits for measuring oil temperature, oil level, and vibration signals, and directly outputs 4 to 20 mA corresponding to these safety parameters. The standard current signal can be connected with various general-purpose secondary instruments or computer digital acquisition monitoring systems.
The probe temperature measurement uses platinum resistance sensor and semiconductor integrated device; the oil level measurement adopts the principle of thermal conduction sensing; the magnetoelectric sensor used for vibration measurement can directly obtain the speed signal of mechanical vibration, through the amplifier and band pass filter. True-RMS converters convert the complex vibration waveform within the effective bandwidth to true RMS conversion and ultimately produce a 4-20mA output from the voltage/current drive circuit.
The combination probe is a small integrated stainless steel anti-corrosion structure, the output transmission method has a long-term anti-jamming capability, plus a good seal and seismic, explosion-proof measures to enable it to work long-term online in the harsh environment of the measurement site. The combination probe can conveniently obtain important parameters closely related to the safe operation of the tested object at the same time. Therefore, it is also suitable for direct safety monitoring of other rotating machinery, reciprocating machinery and other equipment, and it is essential for modern industry, national defense, and scientific research. Less vibration safety monitoring unit.
l Outer shape and installation structure: The KR-939SB3 integrated three-parameter integrated probe is a stainless steel fully-enclosed waterproof structure with a weight of about 0.6kg. The probe is in the form of an external thread and is installed in the threaded mounting hole of the fan decelerator. The probe rod is inserted to reduce speed. In the box, the lubricating oil temperature, the lubricating oil level, and the box vibration signal in the gear box are obtained to complete the transmission output. Thread specifications and probe depth must be stated at the time of ordering.
l Temperature measurement characteristics: Lubricant temperature measurement range: 0 ~ 100 °C, temperature measurement synthesis error: ± 1 °C
l Oil level measurement characteristics: Lubricant oil level measurement range: -10 ~ 40? (0? is the normal position of the reducer under the oil limit position), oil level measurement integrated error: ± 5? The heat is about 2 minutes; the response damping time is about 1 minute; the measured medium must be a non-conductive medium.
l Vibration measurement characteristics: Vibration measurement range: 0 ~ 20 ?/s, the measurement output is proportional to the true rms value (RMS) of the vibration speed, vibration measurement frequency range: 10 ~ 1000HZ, vibration measurement synthesis error: ± 1?/s
l Signal output characteristics: Active current output: DC/4~20mA, requiring passive resistive load. Maximum load resistance measurement (with transmission line resistance): Rmax=(V-15)/0.02 (where V is the supply voltage)
l Power supply characteristics: Operating voltage: DC/24V±2V, no-load working voltage: DC/18V, maximum protection voltage: DC/30V, rated current: DC/80mA, maximum instantaneous operating current: 150mA, internal polarity polarity Protection
KR-939SB3 three-parameter combination probe
KR-939SB3 type integrated three-parameter (oil temperature, oil level, vibration) combination probe is a general-purpose combined probe with non-bus structure in the safety monitoring system of Xinli KR-939 series cooling tower fan. It can be directly connected with the "KR-939B3 fan safety monitor" to achieve single device monitoring. Can also be connected with a variety of general secondary instruments, or computer data acquisition and measurement and control systems (DCS, PLC, etc.).