991-06-50-01-00 Thrust Transmitter

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	991-06-50-01-00
Minimum Order Quantity:	1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 991-06-50-01-00 Thrust Transmitter is a high-precision, loop-powered device designed for industrial automation systems requiring accurate axial displacement monitoring. Engineered for centrifugal air compressors, small pumps, motors, and fans, this transmitter converts the input from a 3300 NSv Proximity Probe into a precise 4 to 20 mA signal proportional to the shaft’s axial position. With a full-scale range of ±0.6 mm and a linear range of 0.25 to 1.65 mm (10 to 65 mils), the 991 transmitter provides real-time feedback for machinery protection, vibration monitoring, and control system integration. Its compact 7.4 x 6 x 10 cm form factor, lightweight 0.44 kg construction, and DIN-rail mounting clips allow installation in confined spaces typical of OEM applications. The transmitter supports a maximum system length of 5 meters (16.4 feet) with miniature coaxial ClickLoc connectors, ensuring secure signal transmission. Operating in harsh environments from -35°C to +85°C and storage up to +100°C, the unit includes potted construction for high humidity tolerance and robust circuitry, including non-interacting zero and span potentiometers, a test input pin, and Power-up Inhibit and Not OK/Signal Defeat circuits, providing reliable 4 to 20 mA output even under extreme conditions.

Applications

1. Centrifugal Air Compressors
The 991 Thrust Transmitter monitors axial thrust of shafts in compressors, providing a 4–20 mA signal to control systems. With ±0.6 mm full-scale capability, it enables early detection of shaft misalignment and reduces maintenance downtime.

2. Small Industrial Pumps
In small pumps, the transmitter ensures accurate measurement of axial displacement under variable flow conditions. Its linear range of 0.25–1.65 mm allows precision thrust monitoring, optimizing pump efficiency and preventing mechanical failures.

3. Motor Shaft Protection
Installed on electric motors, the transmitter provides continuous axial displacement feedback. Loop-powered operation with maximum 1,000 Ω loop resistance ensures compatibility with standard 24 Vdc control systems.

4. Fan Systems in HVAC or Process Plants
The 991 Transmitter tracks axial movement in high-speed fans. With operating temperatures from -35°C to +85°C, it maintains reliable performance in harsh industrial environments while enabling predictive maintenance.

5. OEM Machinery Control Integration
Original equipment manufacturers can integrate the transmitter into compact machinery designs. Its 5 m system length option, miniature coaxial ClickLoc connectors, and DIN-rail mounting make it ideal for space-constrained installations requiring accurate axial displacement signals.

Specifications

Competitive Advantage

1. Integrated Proximitor Sensor
No external unit is required; the transmitter directly accepts 3300 NSv probe input, simplifying installation and reducing system footprint.

2. Robust Environmental Tolerance
Potted construction allows operation in up to 100% condensing humidity, withstanding storage temperatures up to +100°C and operational temperatures down to -35°C.

3. Reliable Signal Conditioning
Non-interacting zero and span potentiometers, Power-up Inhibit, and Not OK/Signal Defeat circuits ensure accurate 4–20 mA output, minimizing false alarms and measurement errors.

4. Compact Design for Confined Spaces
With dimensions of 7.4 x 6 x 10 cm and 0.44 kg weight, the transmitter can be installed in tight OEM machinery environments without compromising accessibility or performance.

5. Flexible System Integration
Supports 5 m system length, miniature coaxial connectors, and DIN-rail or bulkhead mounting, allowing seamless integration into existing automation and machinery protection systems.