Bently Nevada 3300/45 Dual Differential Expansion Monitor

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• Initial Configuration: Before starting operation, carefully configure the 3300/45 according to the

  user manual. Set appropriate parameters for differential expansion measurement, such as

  measurement range, sensitivity, and any necessary calibration factors. Incorrect configuration

  may lead to misinterpretation of the measured values, which could result in failure to detect

  abnormal expansion in time.

• Monitoring Readings: Regularly monitor the differential expansion readings provided by the

  3300/45. Be familiar with the normal operating range of the machinery being monitored. Sudden

  or significant changes in these values may indicate mechanical problems, such as excessive

  thermal expansion or misalignment between the rotor and stator. The monitor is crucial for early

  detection of machine faults related to differential expansion.

• Relay and Alarm Settings: Understand the relay operation and alarm settings. The 3300/45 may

  have relays for alerting when the differential expansion exceeds certain thresholds. Configure the

  alert and danger setpoints based on the machinery's requirements. Also, be aware of the time

  delays associated with these alarms to avoid false alarms or delays in detecting real issues.

The Bently Nevada 3300/45 is a dual-channel differential expansion monitor, designed for real-time 

tracking of rotor-to-stator differential expansion in rotating machinery. It offers redundant 2-channel 

(A/B) monitoring to enhance protection reliability, with configurable alert/danger setpoints and time 

delays to match equipment needs.

Equipped with front-panel meters for gap voltage and expansion value display, it also features OK 

relays, alarm relays (latching/non-latching options), and buffered outputs for external systems. 

Suitable for turbines, generators, and compressors, it ensures early detection of abnormal expansion, 

preventing machinery damage and supporting safe operation.

Q: What is the earliest time when you can make delivery?

A: We will make delivery once received your payment.

Q: If the product can't work, can it be returned?

A: We provide one year warranty.

Q: How easy is it to obtain items?

A: New are no longer continuously manufactured, and therefore supply is scarce.

However, we specialize in sourcing hard-to-find products, and although

the lead time varies, the average is between 5-7 business days.

Q: What is the typical price for the items?

A: Our company always gives customers excellent service and prices that

are highly competitive. Requirements for delivery and availability do affect pricing.