三位一体探头传感器KR939SB3中英文说明书
参数组合探头传感器kr939sb3
hf-sb3型一体化三参数（油温、油位、振动）组合探头，是公司hf-sb3系列冷却塔风机安全监控系统中，一种非总线结构的通用型组合探头。它可以直接与“hf-sb3型风机安全监控器”配接，实现单台设备监控。也可以与多种通用二次仪表，或计算机数据采集测控系统(dcs、plc等)连接使用。
这种应用于风机减速箱安全运行监测的组合探头，在其内部分别集成了测量油温、油位、振动信号的传感、转换和变送电路，直接输出与这些安全参量对应的4～20ma标准电流信号，可以配接各种通用型二次仪表或计算机数字采集监控系统。
kr939sb3 three parameter combination (oil level temperature vibration combination) probe is a general type combined probe that is used in cooling tower fan safety monitoring system. it can be connected with a variety of general two instruments, or computer data acquisition and control system (dcs, plc, etc.).
this is applied to the fan gear box combined probe for safe operation of monitoring, in its internal integrated measuring temperature, oil level, vibration signal sensing, conversion and transmission circuit of direct output and the security parameters corresponding to the 4 ~ 20ma standard current signal, can be matched with a variety of general-purpose two meter or computer digital acquisition monitoring system.
the probe temperature measurement with platinum resistance sensor and semiconductor integrated device; level measurement using a capacitive sensing principle; sensor for measuring vibration, mechanical vibration acceleration signal acquisition, band-pass filter, an integral and true effective value through the amplifier (rms) converter, the vibration waveform in the effective bandwidth of it effective value conversion; finally, the oil temperature, vibration generated by the 4 ~ 20ma output.
main technical performance and indicators
external and installation structures;kr939sb3 three parameter combination probe, the probe is an external thread form, is installed in the threaded installation hole of the fan reduction box, and the probe rod is inserted into the reduction box, so as to get the lubricating oil temperature, the lubricating oil level and the box vibration signal in the reduction box, and complete the transformation output. thread specifications and probe inserts need to be declared at the time of order. see figure1.
[figure 1] exterior pattern
temperature measurement characteristics;measurement range of lubricating oil temperature：0～100 ℃ ，compreh
-ensive error of temperature measurement：±1℃
oil level measurement characteristics:measurement range of lube oil level：0～50㎜（10 mm for the gear box under normal oil level oil limit position）, maximum error of oil level measurement： <= ±1㎜
ambient temperature from -40 to 65 c（extreme temperature resistance from -50 to 150 c）
vibration measurement characteristics： range of vibration measurement：0～20 ㎜/s ，the measurement output is proportional to the effective value of the vibration velocity (rms). frequency range of vibration measurement: 10～1000hz, maximum error of vibration measurement: <=±1㎜/s
signal output characteristics;active current type output：dc/4～20ma ，requirements for passive resistive load。maximum load resistance：< 300 ohm
supply characteristics of power supply：working voltage：dc/24v±4v，maximum protection voltage：dc/30v ，rated current：dc/80ma, maximum instantaneous working current：120ma，internal voltage ambient temperature range：－20～80℃，ambient humidity range：0～100％（the port is sealed with 704 silicone rubber seals）
electrical connections： two four bit terminals：+24v power supply、gnd、it 、t-com、io、o-com、iv、v-com：it temperature current signal output；io oil level current signal output；iv vibration current signal output：the typical connection refer to the schematic diagram of the connection principle of the probe [figure 2].
[figure 2] the schematic diagram of the connection principle of the probe
1# power v+, red
2# public v-, black
3# temperature t, grey
4# vibrate a, blue
5# oil level l, brown
6# shielded g, shielding layer
polarity reverse protection。
environmental characteristics：
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三位一体探头传感器KR939SB3中英文说明书
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