Bently Nevada 991 Thrust Transmitter (Model: 991-06-70-01-05)

The Bently Nevada 991 Thrust Transmitter (Model: 991-06-70-01-05) is designed specifically for applications requiring axial displacement (thrust) monitoring, such as in centrifugal air compressors, pumps, motors, and fans. It provides a 4 to 20 mA proportional output for machinery control systems, integrating seamlessly with industry-standard control protocols.

Key Features

Integrated Proximitor Sensor: Built-in Proximitor functionality eliminates the need for an external unit.
Dynamic Output: Provides a non-isolated “PROX OUT” and “COM” terminal, as well as a coaxial connector for vibration and gap voltage diagnostics.
Adjustable Span and Zero: Non-interacting zero and span potentiometers under the transmitter label for easy loop adjustments.
Test Input Pin: Allows verification of loop output using a DC voltage source.
Power-Up Inhibit Circuit: Prevents signal errors from line voltage transients at startup.
Not OK/Signal Defeat Circuit: Ensures machinery protection by disabling high outputs or false alarms in case of faulty probes or connections.
Versatile Mounting Options: Supports both DIN-rail clips and bulkhead mounting.
Durability in Harsh Environments: Potted construction enables operation in high-humidity settings up to 100% condensing.

Technical Specifications

Parameter	Specification
Input	Compatible with 3300 NSv proximity probe
Output Signal	4 to 20 mA proportional axial displacement
Power Requirement	2-wire, loop-powered
Mounting Options	35 mm DIN-rail clips or bulkhead mounting
Approval Ratings	CSA Division 2, ATEX Zone 0, ATEX Zone 2, ABS maritime
Transmitter Weight	0.43 kg (0.9 lbm)

Environmental Limits

Operating Temperature: -35°C to +85°C (-31°F to +185°F)
Storage Temperature: -51°C to +100°C (-60°F to +212°F)

Mechanical Specifications

Transducer Tip Material: Polyphenylene sulfide (PPS)
Transducer Case Material: AISI 303 or 304 Stainless Steel (SST)

Ordering Information Breakdown

Model: 991-06-70-01-05
- A: Full-Scale Range: 0.6 mm (±0.3 mm)
- B: System Length: 7.0 meters (23.0 feet)
- C: Mounting Option: 35 mm DIN-rail clips
- D: Agency Approval: CSA Division 2, ATEX Zone 0/2, ABS maritime approval

The Bently Nevada 991 Thrust Transmitter is an optimal choice for OEMs seeking a reliable axial displacement monitoring solution, with robust design features suitable for challenging industrial environments.

About Us

Meloauto – Your Trusted Supplier for Original, Brand-New PLC and DCS Parts Meloauto offer a vast selection of products from globally recognized brands, including Allen Bradley, Bently Nevada, Honeywell, ABB, GE Fanuc, Siemens, Invensys Triconex, ICS Triplex, Foxboro, Yokogawa, Schneider, and Hima, among others. With tens of thousands of new parts ready to ship, Meloauto has successfully served customers across over 50 countries worldwide. We focus on supplying discontinued and hard-to-find items, ensuring each product is in brand-new, original condition.

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