991-06-70-02-00 Bently Nevada Sensor Proximity
Description
The 991-06-70-02-00 from Bently Nevada is part of the 991 series thrust transmitter / proximity interface devices used in rotating machinery condition monitoring systems.
Rather than being a simple passive probe, this unit conditions and transmits data from an associated eddy-current proximity transducer (probe + cable) into
a standard industrial signal format (typically 4–20 mA) proportional to measured axial displacement
or thrust position of rotating machinery components.
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FAQ
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Q1. What kind of device is the 991-06-70-02-00?
It is not just a passive proximity sensor — it is a transmitter / conditioning unit that interfaces with a non-contact eddy-current proximity
probe (e.g., 3300 series) and produces a 4–20 mA signal proportional to axial displacement or thrust measurements
suitable for PLC/DCS inputs or alarm logic.
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Q2. What does the “991” series mean?
The 991 series refers to Bently Nevada’s line of proximity-based transmitters that accept inputs from proximity
transducers and convert these into industry-standard outputs (like current loops) for control and protection
systems. A common use case is axial position (thrust) monitoring on machines where direct
measurement feeds machinery protection logic.
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Q3. How is it used in machinery monitoring?
Installed in monitoring cabinets or near machinery terminals, it conditions the raw proximity probe signal
and outputs a scaled 4–20 mA signal representing displacement or thrust — this can be logged,
trended, or tripped on by a PLC, DCS, or protection relay setup.
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Inquiry now: miya@mvme.cn
Bently Nevada Hot Series:
3300 XL Proximity Probe
3300 Proximitor Sensor
3500 Power Supply
1900/65A
3500/42 Monitor Module
The 990 Vibration Transmitter
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