991-25-70-03-05 Thrust Transmitter

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	991-25-70-03-05
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 991-25-70-03-05 Thrust Transmitter is a precision industrial automation device designed for OEMs of centrifugal air compressors, small pumps, motors, and fans requiring a reliable 4–20 mA axial thrust signal. This loop-powered transmitter integrates seamlessly with the 3300 NSv Proximity Probe and its extension cable (available in 5 m or 7 m system lengths), converting shaft axial displacement into a linear, industry-standard 4–20 mA signal for control system input. With full-scale options of 25-0-25 mils and robust potted construction, the transmitter ensures accurate measurement in high-humidity environments and temperatures ranging from -35°C to +85°C. Standard features include non-interacting zero/span potentiometers, dynamic vibration output via coaxial connectors, test input verification, and power-up inhibit circuitry to prevent transient errors. Mounting is simplified through DIN-rail clips or bulkhead screws, and agency approvals include CSA Division 2, ATEX Zones 0 and 2, plus ABS maritime certification. The 991 Thrust Transmitter delivers reliable, high-accuracy automation control, enhancing machinery protection, minimizing false alarms, and optimizing predictive maintenance operations.

Applications

1. Centrifugal Air Compressor Thrust Monitoring
Ensures precise axial position measurement of compressor shafts, enabling 4–20 mA signal input to control systems for predictive maintenance. Typical measurement range: ±25 mils.

2. Small Pump Shaft Protection
Provides real-time axial displacement feedback to protect pump bearings from over-thrust, minimizing downtime and extending machinery life.

3. Motor Thrust Position Feedback
Integrates with motor control systems to maintain optimal rotor alignment, reducing vibration and wear under varying load conditions.

4. Fan Axial Movement Measurement
Monitors high-speed fan shafts, enabling early detection of imbalance or misalignment that could lead to mechanical failure.

5. OEM Machinery Control Systems
Used by equipment manufacturers to supply standardized 4–20 mA thrust signals for automated logic systems, improving alarm accuracy and operational reliability.

Specifications

Competitive Advantage

1. Integrated Sensor Design
Includes an internal Proximitor Sensor, eliminating the need for external signal conditioning units, reducing installation complexity.

2. Robust Industrial Construction
Potted design tolerates 100% humidity condensation and extreme temperatures (-35°C to +85°C), ensuring reliable operation in harsh environments.

3. Enhanced Signal Diagnostics
Provides dynamic vibration and gap voltage output through coaxial connectors for condition monitoring, simplifying troubleshooting.

4. Safety and Accuracy Features
Power-up inhibit circuitry and Not OK/Signal Defeat functions prevent false alarms or erroneous outputs from faulty probes or loose connections.

5. Flexible Mounting and Regulatory Compliance
DIN-rail or bulkhead mounting options facilitate installation in constrained spaces, while CSA, ATEX, and ABS approvals support global industrial applications.