Honeywell 10307 Series Proximity Transducers – 10307/1

Technical Dossier

Product Details And Specifications

Honeywell 10307 Series Technical Notes

The Honeywell 10307 Series proximity transducers are eddy-current (non-contact) displacement measurement devices engineered for continuous, high-reliability operation in heavy industrial environments. Deployed extensively in rotating machinery protection systems across petrochemical refineries, nuclear power stations, offshore platforms, and large-scale chemical processing facilities, the 10307 Series forms a core sensing layer in vibration monitoring and shaft displacement measurement architectures. These transducers are fully compatible with Honeywell's TDC 3000 and Experion PKS distributed control system (DCS) platforms, as well as third-party machinery protection systems conforming to API 670 standards. The 10307/1 variant is the primary single-channel proximity transducer in this family, designed for radial vibration and axial position measurement on turbines, compressors, pumps, and motors. Its eddy-current operating principle provides immunity to oil contamination, pressure, and temperature variations — critical factors in refinery and power generation environments where sensor reliability directly impacts plant uptime and safety system integrity.

The Evolution of 10307 Series Architecture

The 10307 Series was introduced as part of Honeywell's machinery monitoring instrumentation portfolio during the expansion of DCS-integrated condition monitoring in the 1980s and 1990s. Early variants were designed to interface directly with Honeywell's PM (Process Manager) and HPM (High-Performance Process Manager) I/O subsystems, providing analog 4–20 mA or voltage output signals representing gap distance and vibration amplitude. As industrial standards evolved — particularly with the widespread adoption of API 670 (Machinery Protection Systems) — the 10307 Series was refined to meet tighter linearity, temperature coefficient, and EMI immunity specifications. The series operates on the eddy-current principle: a high-frequency oscillator drives a coil in the probe tip, and the impedance change caused by a conductive target (typically a steel shaft) is converted to a DC voltage proportional to gap distance. Driver/oscillator electronics are housed in a separate extension cable and driver unit, making the 10307 a three-component system: probe, extension cable, and driver. Compatibility between these three components is version-locked — mixing components from different calibration sets will produce measurement errors. As the TDC 3000 platform has entered its extended lifecycle support phase and Experion PKS has become the current-generation DCS, the 10307 Series occupies a mature/legacy classification. Honeywell continues to provide lifecycle support, but new installations are directed toward the 3300 XL Series and compatible Bently Nevada 3500 Series alternatives. For existing installations, the 10307 remains the only drop-in compatible replacement without recalibration of the monitoring system.

10307 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified, commonly stocked models within the Honeywell 10307 proximity transducer family. Each model is classified by function and physical configuration:

Proximity Probes (Sensing Elements)

• 10307/1: Single-channel 8mm eddy-current proximity probe, standard range 0–2mm, 200 mV/mil output sensitivity, M10 thread mount.
• 10307/2: Single-channel 11mm proximity probe, extended range 0–4mm, suitable for larger shaft diameters and higher vibration amplitudes.
• 10307/3: 5mm miniature proximity probe for confined installation spaces, 0–1mm range, used in high-speed turbine applications.
• 10307/4: 14mm large-diameter probe for axial position measurement on thrust bearings, 0–6mm range.
• 10307/5: High-temperature variant, rated to 180°C continuous, used in steam turbine bearing housings.
• 10307/6: Stainless steel body probe for corrosive environments (offshore, chemical reactors), AISI 316L construction.
• 10307/7: Dual-tip differential probe for differential expansion measurement on large turbine casings.
• 10307/8: ATEX/IECEx Zone 1 certified intrinsically safe probe for hazardous area classification.

Extension Cables

• 10307/CE-1: 1-meter coaxial extension cable, matched impedance, for standard probe-to-driver connection.
• 10307/CE-5: 5-meter extension cable, armored jacket, for installations requiring remote driver mounting.
• 10307/CE-9: 9-meter extension cable, high-flex variant for dynamic cable routing in rotating machinery enclosures.

Driver / Oscillator Units

• 10307/DR-1: Standard driver/oscillator unit, 24 VDC supply, -24V DC output signal, DIN rail mount.
• 10307/DR-2: Dual-channel driver for two-probe configurations (X-Y radial vibration measurement), single enclosure.
• 10307/DR-IS: Intrinsically safe driver unit, Zener barrier integrated, for Zone 1 hazardous area installations.
• 10307/DR-HT: High-temperature driver rated to 85°C ambient, for hot utility rooms adjacent to furnaces or boilers.

Calibration & Accessory Modules

• 10307/CAL: Factory calibration kit for 10307 probe/cable/driver system, includes target material reference standard (AISI 4140 steel).
• 10307/MTG-KIT: Mounting bracket and locknut assembly for M10 and M14 probe thread configurations.

Quality Control for the 10307 Series Range

Proximity transducer systems require system-level verification — probe, cable, and driver must be tested as a matched set. DriveKNMS applies the following test protocol to all 10307 Series units:

• Gap vs. Output Linearity Test: Each probe is mounted on a precision micrometer fixture with an AISI 4140 steel target. Output voltage is recorded at 0.1mm increments across the full measurement range. Linearity deviation must not exceed ±1% of full scale.
• Sensitivity Verification: Output sensitivity (mV/mil or V/mm) is confirmed against the factory calibration certificate. Units outside ±2% of nominal sensitivity are rejected.
• Driver Supply Current & Output Impedance Check: Driver units are powered at nominal 24 VDC and tested for supply current draw, output voltage range, and output impedance. Abnormal current draw indicates internal oscillator degradation.
• Cable Continuity & Shield Integrity: Extension cables are tested for center conductor continuity, shield continuity, and insulation resistance (minimum 100 MΩ at 500 VDC). Damaged shield braid — a common failure mode in high-vibration installations — is identified and rejected.
• System Integration Test: Probe, cable, and driver are tested as a complete system. Final output signal is verified against the calibration curve before packaging.
• Environmental Inspection: Probe tip, connector bodies, and cable jacket are inspected for mechanical damage, corrosion, and thread condition. Units with compromised sealing or connector damage are not dispatched.