1900/65A (167699-02) BENTLY preamplifier module – compatible with 3300 XL, more accurate vibration monitoring!

Description

The BENTLY NEVADA 1900/65A (167699-02) is a precision-engineered industrial velocity transducer, representing a specific hardware revision within the esteemed 1900/65A product line. This device is designed for the permanent, continuous monitoring of absolute (seismic) vibration on the casings and structures of critical rotating machinery. Operating on a proven electromagnetic induction principle, it features a permanent magnet and coil assembly where relative motion between them generates a voltage output signal that is directly proportional to the velocity of the vibration. The core function of the 1900/65A (167699-02) is to detect and quantify overall vibration levels on bearing housings, gearboxes, pump bases, and other structural points, providing essential data for identifying mechanical faults such as imbalance, misalignment, bearing degradation, and structural resonance.

The intrinsic value of this specific model lies in its documented and consistent performance, guaranteed by the -02 hardware revision, which may indicate an improvement in materials, manufacturing process, or component sourcing for enhanced long-term reliability. Like its series counterparts, it is a self-powered device, eliminating the need for external power supplies and the associated cost and complexity of cabling and conditioning electronics. This makes the BENTLY NEVADA 1900/65A (167699-02) an exceptionally robust and low-maintenance solution, engineered to deliver unwavering performance in harsh environments characterized by extreme temperatures, moisture, and corrosive atmospheres. It provides a vital layer of machinery protection, forming a cornerstone of predictive maintenance strategies aimed at preventing catastrophic failures and unplanned downtime.

1900/65A（167699-02）BENTLY

Technical Specifications

Main Features and Advantages

The BENTLY NEVADA 1900/65A (167699-02) delivers a suite of features engineered for maximum durability and signal fidelity in demanding industrial settings. Its foremost advantage is its self-generating operation, which removes the requirement for external power, simplifying system architecture, reducing installation costs, and enhancing intrinsic safety in potentially hazardous areas. The specific 167699-02 revision signifies a product that has been refined for even greater reliability, potentially featuring upgraded internal components, improved sealing, or a more robust connector system to ensure long-term signal integrity and resistance to environmental degradation.

The transducer’s mechanical construction is a hallmark of its quality. The all-welded, corrosion-resistant stainless steel housing and hermetically sealed internal electronics provide an exceptional degree of protection against moisture, humidity, and chemical corrosion. This makes the 1900/65A (167699-02) ideally suited for challenging applications offshore, in coastal environments, or in chemical processing plants. Its wide frequency response captures a broad spectrum of vibration, from slow-speed machinery to higher-frequency events, making it versatile for monitoring a wide array of assets. The high-grade military-style connector ensures a secure, weatherproof connection that is far less prone to failure than cheaper plastic alternatives, guaranteeing a stable and reliable signal path for the life of the asset.

Application Field

The BENTLY NEVADA 1900/65A (167699-02) is deployed across a vast range of heavy industries where measuring the absolute vibration of machine structures is critical for assessing health and ensuring operational continuity. In power generation, it is a standard fixture on the bearing housings of steam and gas turbines, large motors, boiler feed pumps, induced draft fans, and coal pulverizers. In the oil and gas sector, this transducer is indispensable for monitoring the skid vibration of reciprocating and centrifugal compressors, critical pumps on offshore platforms, and machinery in pipeline pumping stations, where its ruggedness is paramount.

Within the petrochemical, chemical, and refining industries, the 1900/65A (167699-02) provides essential protection for large reactors, mixers, extruders, and centrifugal compressors. It is also fundamental in primary industries such as mining, metals, pulp and paper, and water treatment, where it is used on crushers, rolling mills, paper machine dryers, and large wastewater pumps. Any application that requires a supremely robust, maintenance-free, and highly reliable sensor for permanent vibration monitoring on machinery structures is an ideal application for this specific hardware revision of the BENTLY NEVADA 1900/65A.

1900/65A（167699-02）BENTLY

Related Products

1900/55: Another model in Bently Nevada’s Velomitor line, often with a different form factor or sensitivity.

3300 XL Proximitor System: The industry-standard eddy current system for measuring shaft relative vibration and position, providing complementary data to the seismic vibration from the 1900/65A.

1900/27: A 4-channel vibration transmitter designed to condition and convert the velocity signal from sensors like the 1900/65A into a 4-20 mA output for DCS/PLC systems.

3500/42M: A 4-channel analog monitor in Bently Nevada’s flagship 3500 system, used for high-level monitoring and protection.

1701/61: A compact, single-channel vibration transmitter often paired with a single velocity sensor for less complex applications.

1900/65A (other revisions): Other versions of the same transducer, such as an earlier -01 revision or later versions.