KM202EX

Product Description

The KM202EX casing vibration transmitter features an aluminum alloy terminal head with terminal output connections. It is a high-performance vibration and temperature transmitter designed for monitoring the periodic vibration of a wide range of rotating machinery. The transmitter is typically mounted on the bearing housing or machine casing to detect bearing degradation and measure absolute vibration.

The transmitter incorporates an integrated construction in which a shear-mode piezoelectric sensing element, together with the amplification and integration circuitry, is encapsulated within an internal metallic enclosure. The internal assembly is electrically and thermally isolated from the external stainless-steel housing. This dual-housing design prevents the  formation of ground loops to eliminate electrical interference and minimizes the effects of thermal shock and mounting-base stress.

The transmitter operates on a two-wire, loop-powered configuration and provides a standard 4–20 mA output proportional to vibration amplitude. The output signal can be interfaced directly with PLC, DCS, and SCADA systems, providing reliable data to support predictive maintenance programs.

The instrument features a hermetically sealed construction with excellent immunity to electromagnetic interference and supports long-distance signal transmission. Its lightweight enclosure facilitates field installation, while its superior thermal conductivity enhances the stability and reliability required for continuous long-term operation.

Key Specifications

Electrical Specifications

• Power Supply:10-30 VDC, Loop Powered

• Output(Temperature)：

     Output Signal: 4–20 mA, ±5%

     Maximum Measuring Range: -40 –120 °C
  

• Output(Vibration)：

     Output Signal: 4–20 mA, ±5%

     Maximum Measuring Range:0–50.8 mm/s rms

• Frequency Response:

    10-1000 Hz (±5%)

    3-2000 Hz (±3 dB)

• Repeatability: ±2%

• Max Transverse Sensitivity: 5%

• Turn on time: 25 s

• Vibration Limit: 200 g

• Shock Limit: 3000 g

• Loop Impedance: 700 Ω @ 24 VDC

• Resonant Frequency: 12 kHz

  
  

Physical Specifications                                                                                                                                                                   

• Sensing Element:

     Vibration: Shear-mode PZT Ceramic

     Temperature: Pt100
  

• Material: 316L Stainless Steel

• Output connection: Terminal Block

• Ingress Protection: IP66

• Weight: 356 g

  
  

Environmental Specifications:

• Operating Temperature: -40-10 °C

• Operating Humidity: 5%-95% RH, non-condensing

  
  

Hazardous Area Approvals:

•  ATEX: 

             II 1G Ex ia IIC T4 Ga

             II 2G Ex db IIC T4 Gb

             II 2D Ex ib IIIC T130 °C Db

              （-40 °C to +80 °C）

• CNEx:       

      Ex ia IIC T6 GaEx ib IIIC T80℃ Db 

      Ex db IIC Gb,Ex tb IIIC Db            

• CSA/NRTL/C:

              Ex ia IIC T4

              AEx ia IIC T4

              Class I Division 1, Groups A,B,C,D

              Class II Division 1, Groups E,F,G

              Class III Division 1

              T4 @ Ta ≤ 80 °C