The GE / Bently Nevada 21504-00-20-10-02 is an 8mm standard mount proximity probe from the 7200 series for noncontacting vibration and shaft position measurements on rotating and reciprocating machinery. Engineered for API 670 compliance and industrial reliability, this probe delivers linear output with exceptional accuracy in harsh operating environments.
## Technical Specifications
• **Sensing Tip Diameter:** 8mm with 0.2mm surface finish tolerance
• **Overall Case Length:** 200 mm
• **Cable Length:** 1 meter unarmored lead
• **Connector:** Miniature male coaxial
• **Measurement Range:** 0.25 mm to 2.0 mm (10–80 mils)
• **System Accuracy:** ±0.02 mm (±0.8 mils) or ±4% when calibrated
• **Output Signal:** 200 mV/mil (7.87 V/mm) linear
• **Linearity Tolerance:** ±9.5% system tolerance
• **Frequency Response:** DC to 10 kHz (-5% @ 10 kHz)
• **Phase Response:** ±3° deviation from 2 Hz to 10 kHz
• **Operating Temperature:** -51°C to +177°C (probe tip)
• **Thermal Drift:** 0.03% per °C (-34°C to +177°C)
• **Response Time:** 80 dB shielding
• **ESD Protection:** 15 kV
• **IP Rating:** IP68 submersible (30 m/1 hr)
• **Chemical Resistance:** 500-hour salt spray, 10% H₂SO₄ immersion
• **Thread:** 3/8-24 (1.5 N·m torque)
## Key Features
• NACE MR0175 compliant stainless steel construction (ASTM A276 316L)
• RoHS 3 (2015/863/EU) and REACH SVHC <0.1% compliant
• Wide temperature operating range suitable for severe service applications
• Submersible IP68 rating for washdown and submerged environments
• Superior salt spray and chemical resistance for offshore and petrochemical duty
## Typical Applications
Gas and steam turbines, compressors, centrifuges, pumps, electric motors and generators, rotating and reciprocating machinery in oil and gas and petrochemical industries.
## Compatibility & Integration
Compatible with Bently Nevada 3300 and 9000 monitoring systems. Meets API 670 requirements.
