Bently Nevada 3106-2800-300-20929-05 Eddy-Current Proximitor Product Specification

1. Product Overview

2. Full Model Coding Breakdown

1. 3106: Core series code, Bently 3106 standard proximitor platform with fixed oscillating & signal conditioning circuit, matched exclusive series proximity probe only, relies on full system capacitance matching between proximitor, probe and extension cable to guarantee rated sensitivity;

2. 2800: Total calibrated system length = 2800mm (probe + full extension cable total length), internal circuit capacitance and impedance preset locked for 2.8m total cable configuration; any unmatched cable length will cause measuring non-linearity or signal failure;

3. 300: Custom internal circuit configuration code: fixed rated negative DC power specification, dedicated EMI filter layout, exclusive terminal pin assignment for power supply, probe port and analog signal output, differentiates power consumption and wiring definition from other 3106 variant codes like 190;

4. 20929: Factory unique production serial batch number, traceable to original production workshop, component sourcing and calibration record;

5. 05: Revision modification version No.05, representing latest internal PCB component upgrade & factory parameter correction record of this batch product.

3. Core Electrical Performance Parameters

• Rated supply voltage: -17.5VDC ~ -26VDC DC negative power; when equipped with intrinsic safety barrier for hazardous area installation, input voltage shall be controlled between -23VDC ~ -26VDC; normal steady working current ≤12mA;

• Factory fixed standard sensitivity: 7.87V/mm (200mV/mil), consistent linear output within nominal effective measuring range of 2mm;

• Frequency response range: 0Hz ~ 10kHz, capable of collecting slow static axial drift and high-frequency dynamic radial vibration of high-speed rotating rotors;

• Analog signal output load capacity: max allowable external load resistance ≤10kΩ, directly compatible with Bently 3500 series monitor modules and industrial signal isolators;

• Built-in multi-stage EMI/RFI suppression circuit + internal overvoltage/overcurrent protection, effectively resist interference from on-site inverter, high-power motor and grid transient surge, avoid permanent circuit burnout under short-circuit or power spike fault.

4. Mechanical Structure & Environmental Working Condition

• Housing: Die-cast sealed aluminum alloy casing, dual mounting structure supporting standard DIN rail cabinet installation and field junction box panel fixed mounting without extra customized accessories; screw-type copper wiring terminals arranged by fixed pin definition corresponding to 300 circuit code for power, probe connection and signal output wiring;

• Working ambient temperature: continuous operating range -40℃ ~ +85℃, storage temperature: -55℃ ~ +90℃ under dry non-condensing environment;

• Working humidity: 5%RH ~ 90%RH, no internal condensation permitted to prevent circuit insulation corrosion and aging;

• Anti-vibration capability: withstand regular industrial equipment vibration 10Hz~55Hz; long-term deployment in corrosive gas, heavy oil mist and conductive metal dust environment is forbidden; for installation altitude above 1000m, proper operating load deration is required for heat dissipation compensation.

5. Matching Configuration & On-site Maintenance Specification

Daily Maintenance Rules

1. Periodically inspect casing sealing integrity and terminal screw fastening tightness to eliminate intermittent signal drop caused by loose wiring and moisture ingress; regularly clean surface dust to ensure internal circuit heat dissipation;

2. Spare replacement: only select full 2.8m factory pre-calibrated probe-cable assembly matching original configuration; refurbished replacement units must complete full-range linear calibration, long-time load aging and alternating high-low temperature impact test per original Bently factory standard before delivery;

3. Batch trace: trace original factory test data and calibration certificate via serial code 20929-05 when troubleshooting on-site measuring deviation.

6. Typical Application Fields