Product Short Description
99005-50-01-00 is an industrial-grade vibration signal transmitter manufactured by Bently Nevada (Baker Hughes). It perfectly matches 3300 NSv non-contact proximity probes and extension cables. The device adopts eddy-current non-contact measurement principle, converts mechanical radial shaft peak-to-peak vibration displacement signals into standard 4–20 mA DC analog current loop signals. It integrates probe excitation, signal conditioning, amplification, linearization, filtering and fault detection functions. This dedicated configuration provides 0–5 mils peak-to-peak measuring range, 5.0 meters total probe-cable system length, standard 35 mm DIN rail mounting.
Description
Core Measurement Specifications
- Full-Scale Measuring Range: 0–5 mils peak-to-peak (0–125 μm peak-to-peak)
- System Total Cable Length: 5.0 meters
- Matching Probe: Bently Nevada 3300 NSv proximity probe
- Effective Linear Working Gap: 0.5 mm – 1.75 mm (20–55 mils)
- System Sensitivity: 7.87 V/mm (200 mV/mil)
- Measurement Linearity Accuracy: ±1.5% full scale range
- Minimum Measurable Target Diameter: 9.5 mm
- Standard Calibration Target: AISI 4140 carbon steel
Electrical Specifications
- Power Supply Mode: 2-wire loop-powered
- Operating Supply Voltage: +12 VDC to +35 VDC
- Output Signal: 4–20 mA DC, proportional to peak-to-peak vibration amplitude
- Maximum Allowable Loop Resistance: 1000 Ω (including cable resistance, at 35 VDC)
- Typical Current Limiting Value: 23 mA
- Probe Fault Alarm Current: <3.6 mA (Not OK signal for probe disconnection/damage)
- Frequency Response Bandwidth: 5 Hz – 6 kHz (+0 / -3 dB)
- Temperature Stability: Scale factor variation ≤±10% within 0 °C to +70 °C
- Secondary Dynamic Output: Isolated PROX OUT analog vibration signal + BNC coaxial port
- Maximum Lead Length to BNC Port: 3 meters
Mechanical & Structural Specifications
- Mounting Mode: 35 mm standard DIN rail mounting
- Transmitter Overall Dimensions: 76.2 mm × 101.6 mm × 50.8 mm
- Transmitter Net Weight: 0.43 kg
- Total System Shipping Weight: 1.5 kg
- Housing Material: High-strength industrial anti-corrosion engineering plastic
- Internal Structure: Fully potted sealed circuit board
- External Adjustment: Independent non-interacting zero potentiometer & span potentiometer
Environmental Specifications
- Transmitter Operating Temperature: -35 °C to +85 °C
- Transmitter Storage Temperature: -52 °C to +100 °C
- Probe Operating Temperature: -52 °C to +177 °C
- Humidity Resistance: 100% condensing environment, non-submerged operation
- Protection Rating: IP65
- Anti-interference Performance: Fully complies with industrial EMC electromagnetic compatibility standards
- Anti-vibration Performance: 10–2000 Hz, 10 g acceleration resistance
Certifications & Compliance
- API 670 Machinery Protection Standard Compliance
- CE Industrial Safety Certification
- CSA NRTL/C Certification
- RoHS Lead-Free Compliance
Core Functional Features
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Integrated Internal Proximitor Design
No external independent proximitor module required; probe excitation, signal amplification, linearization and filtering are fully integrated inside the transmitter, achieving compact and simplified on-site installation.
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Dedicated 0–5 mils pp Measuring Range
Professional customized small-amplitude vibration measurement range, perfectly matching low-vibration OEM rotating machinery alarm threshold settings.
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5.0 Meters Fixed System Cable Length
Matched probe + extension cable total length 5m, stable signal transmission, low attenuation, standard configuration for most on-site installation spaces.
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Standard DIN Rail Mounting Structure
35 mm DIN rail installation, plug-and-play wiring, suitable for compact industrial control cabinet internal arrangement.
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Independent Non-Interfering Zero & Span Calibration
External adjustable zero and span potentiometers under label cover, realizing accurate loop current calibration without mutual interference.
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Built-In Test Input Interface
Supports function generator signal injection, completing fast loop output verification and on-site debugging without equipment disassembly.
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Complete Not OK Fault Protection Circuit
Automatically detects probe damage, cable breakage and loose connection faults; outputs <3.6 mA low-current alarm signal to completely avoid false high-vibration alarms.
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Power-On Startup Inhibit Function
Blocks abnormal transient signals during power-on startup to prevent system false alarm actions.
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Dual Signal Output Architecture
Primary 4–20 mA analog signal for PLC/DCS control and alarm; secondary dynamic vibration signal for advanced machinery fault diagnosis and analysis.
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High Reliability Sealed Packaging
Fully potted internal circuit, resistant to dust, moisture and strong electromagnetic interference in harsh industrial sites.
Main Application Scenarios
- Centrifugal air compressors & process gas compressors
- Industrial oil pumps, water pumps and pipeline centrifugal pumps
- Low-power high-speed induction motors
- Industrial fans, blowers and exhaust equipment
- Petrochemical processing small rotating machinery
- Oil & gas field auxiliary rotating production equipment
- Power plant auxiliary rotating machinery
- Wastewater treatment rotating machinery
- Machinery predictive maintenance & health management systems
- All industrial occasions requiring API 670 standard small-amplitude shaft vibration protection
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