bently nevada 146054-12-05-02-05 24 VDC Power Supply Accelerometer with 34 Bar Pressure Rating and Hermetic Seal for Solids Monitoring

The 3300 Ceramic Capped Probe is a state-of-the-art solution for monitoring machinery in aggressive chemical or high-pressure environments. The alumina cap and 304 stainless steel probe case provide robust protection and increased life for applications in anhydrous ammonia or other extreme pH environments. The ceramic capped probe is compatible with the 3300 Proximitor Sensor and extension cable.

Our Bently Nevada ceramic-capped probes are rated to 34 Bar (500 psi) pressure. Modifications are available for applications involving higher pressures.

The 146054, 146055, and 164517 probes were developed for applications that expose only the front of the probe case assembly to corrosive gases and liquids. These ceramic probe assemblies prevent corrosive gases and liquids from entering the front end of the probe case. We leak test the front-end ceramic to metal interface with helium to ensure a hermetic seal. These probes do not have a rear fitting or stainless steel tube, so that the rear of the probes are not sealed. You must not expose the rear of these probes to destructive environments such as water, NH3, NH4OH, hydrogen sulfide, etc.

The 146056 ceramic probe assembly has the rear fitting and stainless steel tubing to prevent corrosive gases and liquids from entering both the front and rear of the probe case. We leak test the front-end ceramic to metal interface with helium to ensure a hermetic seal. The fitting at the rear end of the probe is unsealed when it leaves the factory. You can disconnect the tubing and the fittings from the probe case and slide them out of the way while gapping and installing the probe. Once you have secured and correctly gapped the probe, you should tighten the fittings to completely seal the rear of the probe.

Unless otherwise noted, the following specifications are for a 3300 5 mm system including Proximitor Sensor, extension cable and probe between +18°C and +27°C (+64°F to +80°F), with a -24 Vdc power supply, a 10 kW load, and an AISI 4140 steel target. Performance characteristics apply to systems that consist solely of 3300 XL components. The system accuracy and interchangeability specifications do not apply when using a transducer system calibrated to any target other than our AISI 4140 steel target.

1.52 mm (60 mils). Linear range begins at approximately 0.25 mm (10 mils) from target and is from 0.25 to 1.78 mm (10 to 70 mils) (approximately -4 to -16 Vdc).

The linear range of the ceramic-capped probes are shifted compared with standard 3300 XL probes. The probes are very robust but cannot withstand direct mechanical loads on the probe tip. Gap the probe electrically and avoid contact with the target surface.

Configuring the monitor when using ceramic-capped probes requires extra care. Due to the shift in the curve from that of a standard 3300 XL probe, the probe tip may contact the shaft before the probe reaches lower OK limit. Your installation may require a monitor modification to accommodate this condition.

Standard 5-metre or 9-metre system: 7.87 V/mm (200 mV/mil) ±6.5% including interchangeability error when measured in increments of 0.25 mm (10 mils) over the 60 mil linear range from 0°C to +45°C (+32°F to +113°F).

• Probe Tip Material: Alumina ceramic (Al2O3)
• Probe Case Material: AISI 304 stainless steel
• Probe Cable Specifications: 75 Ω coaxial, fluoroethylene propylene (FEP) insulated probe cable in the following total probe lengths: 0.5, 1, 2, 5, or 9 meters

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

• This device may not cause harmful interference
• This device must accept any interference received, including interference that may cause undesired operation

European Community Directive: RoHS Directive 2011/65/EU

Cables associated with the product(s) mentioned in this datasheet have an EFUP designation of 15 years, in accordance with SJ/T 11364-2024.

• 2019 Rules for Conditions of Classification, Part 1, 1-1-1/7.7, 1-1-A3, 1-1-A4
• 2019 Rules for Conditions of Classification, Part 1, Offshore Units and Structures 1-1-4/9.7, 1-1-A2, 1-1-A3