Bently Nevada 990-10-XX-02-00 163930-01

Product Short Description

This product is an industrial-grade eddy current proximity vibration transmitter manufactured by Bently Nevada (Baker Hughes). It fully matches 3300 NSv series non-contact proximity probes and extension cables. The device converts mechanical radial shaft vibration displacement signals into standard 4–20 mA DC analog current signals proportional to peak-to-peak vibration amplitude. It integrates probe excitation, signal conditioning, amplification, linearization, fault detection and diagnostic signal output functions. Model 990-10-XX-02-00 with modification code 163930-01 adopts bulkhead fixed mounting, supports full-scale range of 0–10 mils peak-to-peak vibration, and is specially customized for OEM rotating machinery vibration monitoring, alarm and control system integration.

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Description
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Description

Electrical Specifications

Power Supply: +12 VDC to +35 VDC, 2-wire loop-powered design
Standard Output Signal: 4–20 mA DC, proportional to peak-to-peak radial vibration displacement
Full-Scale Measuring Range: 0–10 mils peak-to-peak (0–254 μm peak-to-peak)
Loop Measurement Accuracy: ±1.5% full scale range (tested at 250 Ω loop resistance)
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)
Sensitivity Rating: 7.87 mV/μm
Temperature Stability: Scale factor variation ≤±10% within 0 °C to +70 °C
Dynamic Diagnostic Output: Non-isolated PROX OUT & COM terminals + coaxial BNC connector
Maximum Lead Length to BNC Port: 3 meters

Probe & Mechanical Specifications

Compatible Probe Model: Bently Nevada 3300 NSv non-contact proximity probe
System Total Cable Length: XX meters (customizable 5m / 7m / 9m options)
Effective Working Gap Range: 0.5 mm – 1.75 mm (20–55 mils) between probe tip and metal target
Minimum Measurable Target Diameter: 9.5 mm
Mounting Mode: 02 = Bulkhead screw fixed mounting (distinguished from DIN rail mounting)
External Zero & Span Adjustment: Non-interacting independent potentiometers
Physical Dimensions: 76.2 mm (H) × 101.6 mm (W) × 50.8 mm (D)
Transmitter Net Weight: 0.2 kg

Environmental & Construction 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
Internal Structure: Fully potted sealed circuit, dust-proof, moisture-proof and anti-interference
Housing Material: Industrial anti-corrosion engineering plastic

Certifications

CSA/NRTL/C, CE compliance, general industrial safety certification

Core Functional Features

Integrated Internal Proximitor Sensor Design

No external independent proximitor module required; probe excitation, signal amplification and conditioning are fully integrated inside the transmitter, realizing compact and simplified on-site installation.
0–10 mils pp Custom Full-Scale Range (Mod 163930-01)

Special customized measuring range for medium-amplitude rotating machinery vibration monitoring, matching OEM system alarm threshold settings.
Bulkhead Fixed Mounting Structure (02 Code Configuration)

Adopts panel/bulkhead screw mounting instead of DIN rail, suitable for machinery local control box and compact equipment internal installation.
Independent Non-Interacting Zero & Span Calibration

External adjustable zero and span potentiometers under label cover, realizing accurate loop current calibration without mutual interference.
Built-In Test Input Interface

Supports function generator signal injection, realizing fast loop output verification and on-site debugging without dismounting equipment.
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.
Power-On Startup Inhibit Function

Blocks abnormal transient signals during power-on startup to prevent system false alarm actions.
Dual Signal Output Architecture

Primary output: 4–20 mA analog signal for PLC/DCS control and alarm; Secondary output: dynamic vibration + gap voltage analog signal for advanced machinery fault diagnosis and analysis.
High Reliability Sealed Packaging

Fully potted internal circuit, resistant to dust, moisture and strong electromagnetic interference in harsh industrial sites.

Application Scenarios

This transmitter is specially designed for OEM factory matching radial shaft vibration displacement continuous monitoring of medium and large high-speed rotating machinery:

Centrifugal air compressors & gas compressors
Industrial oil pumps, water pumps and pipeline pumps
High-voltage induction motors & high-speed rotating motors
Industrial fans, blowers and exhaust equipment
Petrochemical processing rotating machinery
Oil & gas field production rotating equipment
Power plant auxiliary rotating machinery
Wastewater treatment rotating equipment
Machinery predictive maintenance & health management systems

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