Vibro-Meter IPC704 244-704-000-042

Core Function Features

1. High-gain charge amplification circuit, convert pico-coulomb (pC) weak charge signals to standard industrial current output
2. Built-in configurable high-pass and low-pass analog filter to extract target mechanical vibration frequency band
3. Optional internal signal integrator to directly convert acceleration signal to velocity measurement output
4. Current modulation transmission technology with strong anti-interference, no voltage drop loss over long cable distance
5. Integral RFI/EMI suppression circuit to resist radio frequency and power frequency electromagnetic interference
6. Moulded aluminum alloy casing acts as Faraday shielding cage for external electromagnetic noise isolation
7. Dual-wire / three-wire transmission mode compatible, seamless docking with PLC, DCS and vibration monitoring rack
8. Wide operating temperature range adapting outdoor and heavy industrial site deployment

Technical Performance Parameters (Custom Model 244-704-000-042)

• Input Signal Type: Piezoelectric charge signal, dynamic range 100,000pC peak
• Gain Configuration (A2): Fixed factory gain for 10~200pC/g accelerometer matching
• Filter Parameters (B07 / C232): High-pass cut-off 0.7Hz, low-pass cut-off 232Hz, filter slope 12dB/octave
• Integrator Time Constant (D2.32): 2.32s velocity conversion integration parameter
• Output Mode (E2): 4–20mA isolated current output
• Full-Scale Measuring Range (F5000): Max vibration velocity output 5000mm/s peak
• Power Supply: 24VDC ±10, power consumption 3.5W
• Signal Transmission Distance: Max 1000m shielded twisted-pair cable
• Operating Temperature: -30°C ~ +85°C
• Storage Temperature: -40°C ~ +85°C
• Humidity: 5%–95% RH non-condensing
• Linearity Error: ≤0.03% full scale

Material & Structural Characteristics

• Outer Enclosure: Integral die-cast aluminum alloy shielding shell, black oxidation anti-corrosion surface treatment
• Internal Circuit Board: Double-sided gold-plated PCB with silicone conformal coating
• Wiring Terminals: Two-way M12 aviation plug industrial connector, waterproof dust-proof IP65 grade for field installation
• Dimensions: 120mm × 100mm × 80mm
• Net Weight: 0.45kg

Working Principle

1. Piezoelectric sensor generates weak high-impedance charge signal under mechanical vibration excitation, input to IPC704 charge amplification front-end
2. High-gain operational amplifier converts charge signal to low-impedance voltage signal; configurable filter circuit eliminates irrelevant frequency noise
3. Built-in integrator circuit converts acceleration waveform to velocity waveform according to preset time constant
4. Voltage signal converts to isolated 4–20mA standard current signal via V/I conversion circuit for long-distance transmission
5. Aluminum shielding shell and internal RFI filter jointly suppress external electromagnetic interference to guarantee signal fidelity

Installation Requirements

1. Two installation options: wall surface bolt fixing or DIN rail adapter mounting inside control cabinet
2. M12 aviation plug connection must tighten locking nut fully to reach IP65 waterproof protection level for outdoor field installation
3. Use shielded twisted-pair cable between conditioner and sensor; cable shielding layer single-point grounded at conditioner side
4. Avoid installing near frequency converters, high-power motors and contactors which generate strong electromagnetic interference
5. External 24VDC power supply must equip surge protection device for transient voltage suppression

Application Scenarios

• Steam turbine bearing housing vibration signal conversion
• Gas compressor gear box and blade vibration monitoring
• Hydraulic equipment dynamic pressure fluctuation measurement
• Wind turbine gearbox and generator vibration long-distance signal transmission
• Heavy metallurgy rolling mill mechanical fault early warning monitoring

Custom Model Specific Operation Notes

1. This customized model fixed filter band 0.7–232Hz, cannot modify filter parameters on site; reconfigure at factory if frequency band adjustment required
2. Do not connect voltage signal directly to charge input port to avoid burning front-end amplification circuit
3. Regularly check M12 aviation plug sealing ring aging condition for outdoor deployed units
4. Keep cable length within 1000m; signal attenuation and measurement error will increase beyond this distance
5. When multiple IPC704 units are deployed together, separate sensor cables and power cables to prevent cross-interference