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991-06-50-01-00

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The Bently Nevada 991-06-50-01-00 Thrust Transmitter provides accurate shaft axial displacement measurement, delivering a reliable 4–20 mA signal for machinery control and protection applications.
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Technical specifications for 991-06-50-01-00

  • Manufacturer:
    Bently Nevada
  • Part Number:
    991-06-50-01-00
  • Product Family:
    991 Thrust Transmitter
  • Full-scale Option:
    0.6-0-0.6 mm
  • System Length Option:
    5.0 meters (16.4 feet)
  • Mounting Option:
    35 mm DIN-rail clips
  • Agency Approval Option:
    Not required
  • Input:
    Accepts one non-contacting 3300 NSv Proximity Probe and extension cable
  • Power:
    Requires +12 to +35 Vdc input at the transmitter terminal
  • Weight:
    0.44 kg
  • Estimated shipping dimensions:
    7.4x6x10cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.
Description
The 991-06-50-01-00 Thrust Transmitter is specifically engineered for OEMs of centrifugal compressors, small pumps, motors, or fans seeking a simple yet precise way to monitor shaft axial movement. It accepts input from one 3300 NSv proximity probe and its extension cable (system length 5 m) and converts the mechanical displacement into a proportional 4–20 mA output suitable for control systems and machinery protection logic.

Key design features include an integrated Proximitor sensor, non-interfering zero and span adjustments, and a Test Input pin that allows for fast loop verification. The unit also incorporates a Power-up Inhibit circuit to avoid erroneous signals during line voltage spikes and a Not OK/Signal Defeat circuit that prevents false alarms caused by probe disconnection or failure.

Installation flexibility is provided with DIN-rail clips or bulkhead screw mounting, while the potted construction ensures operation in high-humidity environments. Its compact footprint allows placement in restricted spaces, making it ideal for retrofits or new equipment installations.

For diagnostic purposes, the PROX OUT and COM terminals with coaxial connector provide dynamic vibration and gap voltage signals, supporting maintenance and real-time monitoring. The 991-06-50-01-00 offers a combination of precision, durability, and diagnostic capabilities suitable for demanding industrial applications.
Alternative Names
991-25-50-01-00 991-06-70-01-00 991-06-50-02-00 991-06-50-03-00
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the 991-06-50-01-00 measurement range?
Full-scale displacement range is ±0.6 mm (0.6–0–0.6 mm).
What is the 991-06-50-01-00 typical loop accuracy?
±1.5% of full-scale range under normal operating conditions.
Are your products brand new?
Yes, all products are guaranteed to be brand new unless otherwise specified.
What is the 991-06-50-01-00 power supply requirement?
Requires +12 to +35 VDC at the transmitter terminals.

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