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The 21747-040-00 is a standard Proximitor extension cable within the 7200 series proximity transducer system. The hardware has a length of 4.0 meters and features a standard flexible jacket configuration without a stainless steel armor tube. Serving as a signal relay component within the transducer loop, it connects the tail connector of a 7200 series 5mm or 8mm proximity probe to a remote Proximitor sensor.
Broad Temp, Oil Resistance & Flexible Routing
Low-Attenuation Coaxial Anti-Interference
Precise Calibration Impedance Matching
The cable transmits high-frequency eddy current displacement and dynamic vibration signals with low attenuation and high electromagnetic interference (EMI/RFI) immunity. In physical deployment, the 21747-040-00 extension cable cannot be used as a standalone unit. It must be paired with a designated 7200 probe length (e.g., combining with a 1.0-meter or 5.0-meter total length probe) to form a complete 5-meter or 9-meter measurement loop that matches the Proximitor sensor's calibrated impedance requirements, supporting an 80 mils (2mm) linear measuring range.
The 7200 5mm and 8mm Proximity Transducer Systems are non-contacting, gap-to-voltage transducer systems that measure static as well as dynamic distances between the probe tip and the observed target. The general application is any requirement for an accurate, non-contacting displacement measurement. However, the most common use is for shaft position and vibration measurements on rotating and reciprocating machinery. They are designed for use with virtually any machine type including pumps, centrifuges, electric motors, and generators. The systems offer 80 mils (2mm) of linear measuring range and are compatible with API 670 requirements.
A system consists of a probe with integral coaxial cable, an extension cable, and a Proximitor. All 7200 proximity transducer systems are compatible with 3300 and 9000 Monitoring Systems. The combination of a probe with an integral lead and an extension cable is designed to achieve a system length of either five or nine metres from the probe tip to the Proximitor. Probes are available with integral leads of various lengths to match the average extension cable lengths. Probes and cables of the same length, and Proximitors with the same part number, are completely interchangeable.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 21747-040-00 Extension Cable Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Oil & Gas Refining
Monitoring shaft vibration and axial thrust position in heavy-duty centrifugal compressors and charge pumps to prevent catastrophic failures during high-pressure refining processes.
Petrochemical & Chemical Processing
Measuring the radial vibration of reactor agitators and ethylene compressors to detect early stage bearing wear and misalignment, ensuring process safety.
Nuclear Power Generation
Measuring shaft displacement of reactor coolant pumps (RCP) and main feedwater pumps where unplanned downtime poses extreme safety and economic risks.
Hydroelectric Power Generation Industry
Monitoring the radial runout and vertical thrust bearing oil film thickness of hydro-turbines and generators to ensure structural integrity under fluctuating water flows.
Iron & Steel Manufacturing
Monitoring shaft vibration on large blast furnace blowers, oxygen compressors, and hot rolling mill drives to prevent unexpected production line stoppages.
Mining & Mineral Processing
Measuring the bearing vibration and gear shaft alignment of massive ball mills, sag mills, and primary crushers operating under continuous heavy loads.
CRITICAL NOTICE: Ensure total system length matches factory calibration (5m/9m); never cut or splice the cable. Always use connector insulators to prevent ground loops, and strictly maintain the minimum bend radius while routing through protective conduits to avoid mechanical damage.
21747-040-00 is equipped with series-specific internal shielding and stranded low-impedance conductors, allowing the cable to deliver sound immunity against electromagnetic interference. In practice, it must be strictly paired with a designated probe length to form a complete measurement loop that matches the Proximitor's calibrated impedance requirements.
It is the standard Proximitor extension cable within the Bently Nevada 7200 series proximity transducer system.
How do you use a product like 21747-040-00?
Lay it within cable trays or conduits, connecting one end to the tail connector of a 7200 series proximity probe and the other end to the input of the Proximitor sensor.
Does 21747-040-00 have a metal armor protection tube?
No, the suffix option -00 indicates a standard flexible jacket configuration without a stainless steel armor tube.
What type of conductor core is used inside 21747-040-00?
It utilizes a stranded low-impedance copper core conductor internally to withstand industrial mechanical vibrations.
What shielding structure does 21747-040-00 feature?
It is equipped with a series-specific coaxial internal shield to isolate field electromagnetic interference.
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