991-25-70-01-05 Thrust Transmitter

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	991-25-70-01-05
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 991-25-70-01-05 Thrust Transmitter delivers precise 4–20 mA axial displacement signals for centrifugal air compressors, small pumps, motors, and fans. Designed for OEMs, the 991-25-70-01-05 accepts input from a single 3300 NSv Proximity Probe with matching extension cable (available in 5 m or 7 m lengths). With a full-scale range of 25-0-25 mils (0.25–1.65 mm for Prox Out) and loop-powered operation (+12 to +35 Vdc), the 991-25-70-01-05 provides an industry-standard output for machinery control and protection.

The 991-25-70-01-05 features DIN-rail or bulkhead mounting options, potted construction for 100% condensing environments, and integrated Proximitor Sensor electronics, eliminating external units. Its non-isolated PROX OUT and COM terminals with coaxial output allow dynamic vibration and gap voltage monitoring. Loop adjustment is simplified with zero and span potentiometers, while the Power-up Inhibit and Not OK/Signal Defeat circuits prevent false alarms from line transients or faulty probes. Operating from −35°C to +85°C and storing safely to −51°C, the 991-25-70-01-05 Thrust Transmitter ensures reliable axial position monitoring in compact automation spaces.

Applications

Monitor Axial Shaft Position in Centrifugal Air Compressors
The 991-25-70-01-05 accepts input from a 3300 NSv Proximity Probe and extension cable (5 m or 7 m), providing precise 4–20 mA signals for control systems to monitor axial displacement within 0.25–1.65 mm (10–65 mils).

Control Small Pumps and Fans
With a compact DIN-rail mount or bulkhead option, the 991-25-70-01-05 integrates easily into tight machinery spaces, delivering real-time shaft thrust signals to optimize motor and pump operation.

Machinery Protection Alarming
Using non-isolated PROX OUT and COM terminals and coaxial outputs, the 991-25-70-01-05 allows dynamic vibration and gap voltage monitoring, enabling early detection of abnormal shaft movement.

Specifications

Competitive Advantage

Integrated Proximitor Sensor Reduces Installation Components
The 991-25-70-01-05 includes all sensor electronics internally, removing the need for external units and simplifying installation.

Adjustable Loop Signal Output
Zero and span potentiometers under the 991-25-70-01-05 label allow field calibration without disconnecting wiring, ensuring accurate 4–20 mA proportional output.

Protection Against Faults and Line Transients
Power-up Inhibit and Not OK/Signal Defeat circuits in the 991-25-70-01-05 prevent false alarms caused by line voltage spikes or faulty proximity probes.

Wide Operating Range for Harsh Environments
The 991-25-70-01-05 operates from −35°C to +85°C and can be stored between −51°C and +100°C, while potted construction withstands 100% condensing humidity conditions.

Flexible Mounting Options
The 991-25-70-01-05 supports 35 mm DIN-rail clips or bulkhead mounting screws, enabling installation in constrained OEM machinery layouts.