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

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CZJ-B振動監(jiān)測保護儀
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三參數(shù)組合探頭KR－939SB3
SDJ-101位移振動保護變送器
SDJ-301軸向位移變送器
VB-Z230，VB-Z230AN振動變送器
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VRT-2（T）型振動速度（及溫度）變送器
SWZT-1F/A分體式振動溫度變送器
KR-939SB3型一體化
KR-939SB4型一體化四參數(shù)組合探頭
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HZD-B-8T/HZD-B-8B/振動變送器
HZD-B-4一體化振動變送器
HZD-B-1 振動變送器
HZD-B-8一體化振動變送器
HZD-B-5一體化振動變送器                    
HZD-B-9/HZD-B-9F振動變送器

KR－939SB3特點：

二線制振動速度傳感器SDJ-SG-2
振動速度傳感器HD-ST-2
HD-ST-3振動速度傳感器
YD9200A系列一體化振動變送器
ZHJ-402一體化振動溫度變送器
ZHJ-201振動溫度傳感器
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JM-B-7 智能振動監(jiān)測保護儀（雙通道）
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SG-2振動傳感器
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ZD-03型一體化防爆振動變送器
ZD-03A一體化振動變送器
ZD-05一體化振動溫度變送器
ZDI-01型軸振動變送器
YC-DO型脹差變送器
YZ-DO型軸向位移變送器

CZY-01型轉(zhuǎn)速變送器
YTD-1型位移變送器
殼振動速度傳感器
壓電式一體化振動變送器
一體化振動傳感器
ICP壓電加速度傳感器
一體化帶顯示振動變送器