Product Directory
3300/15 Dual Vibration MonitorWhile still available, this monitor has been superseded by the 3300/16, which is fully backward compatible and provides enhanced functionality over the 3300/15. The 3300/16 is recommended for all new and spare parts applications.
3300/16 XY/GAP Dual Vibration MonitorThis module continuously measures and monitors two independent channels of radial vibration and average shaft position (gap), accepting inputs from two proximity probe/Proximitor® systems.
3300/20 Dual Thrust Position MonitorThis module accepts inputs from up to two proximity probe transducers and provides indication and alarming functions associated with axial position. It is most often used to monitor the position of the thrust collar relative to thrust bearing clearances.
3300/25 Dual Acceleration MonitorThis module accepts inputs from up to two accelerometer transducers and provides filtering and signal conditioning associated with casing seismic measurements in zero-to-peak engineering units. It can also be configured as a dual-path monitor, whereby a single transducer can be processed into two distinct measurements; such as channel A for acceleration and channel B for integrated acceleration (velocity).
3300/26 Dual Acceleration RMS Monitor Identical to the 3300/25 except it provides measurements in RMS engineering units.
3300/40 Eccentricity MonitorThis single-channel monitor accepts input from a proximity probe and associated Keyphasor® transducer and conditions the signals to provide both direct and peak-to-peak eccentricity measurements, a measure of shaft bow at slow-roll conditions. It is typically used on large steam turbines or other machines subject to gravity or thermal shaft bows.
3300/45 Dual Differential Expansion MonitorThis dual-channel monitor accepts inputs from compatible extended-range proximity probes observing a collar or perpendicular shaft surface. It provides alarming and indication functions associated with case growth relative to rotor growth, typically found on large steam turbines whose rotors and cases heat up and grow at different rates during starting and loading.
It is used as part of an overall Turbine Supervisory Instrumentation (TSI) system to ensure the case and rotor are growing properly to prevent axial rubs between rotating and non-rotating parts.
3300/46 Ramp Differential Expansion Monitor Provides functionality similar to 3300/45 monitor, but contains compensation circuitry for probes that observe a sloped, rather than perpendicular, shaft surface.
3300/47 Complementary Input Differential Expansion MonitorProvides functionality similar to 3300/45 monitor, but used when the range of a single transducer is insufficient and back-to-back probes must be used. The probes are arranged in such a manner that as the machine expands or contracts outside the range of the first probe, it comes within range of the second probe. It allows the user to essentially double the measurement range of a single extended-range probe.
3300/48 Case Expansion MonitorThis dual-channel monitor accepts inputs from compatible dc LVDTs (Linear Variable Differential Transformers). It provides alarming and indication functions associated with case growth relative to a fixed foundation, typically found on large steam turbines designed with sliding feet to allow for thermal case expansion as the machine heats up during starting and loading. It is used as part of an overall Turbine Supervisory Instrumentation (TSI) system to ensure the case is expanding properly and that the sliding feet are not "stuck."
3300/55 Dual Velocity MonitorThis module accepts inputs from up to two Seismoprobe® (moving-coil) or Velomitor® (piezo-electric) velocity transducers and provides filtering and signal conditioning associated with casing seismic measurements in zero-to-peak or RMS engineering units. It can also be configured as a dual-path monitor, whereby a single transducer can be processed into two distinct measurements; such as channel A for velocity and channel B for integrated velocity (displacement).
3300/61 Dual Vector MonitorSupplied for spare parts only. This monitor was introduced in 1991 to supersede the 3300/60, a single-channel version. It provides functions similar to the overall vibration and gap voltage measurements of a 3300/16 monitor, but uses a Keyphasor® signal to filter the vibration signal and provide both 1X amplitude/phase and 2X amplitude/phase measurement and alarming capabilities, particularly useful for early detection and warning of shaft cracks. Consult the factory or your local sales professional for more information.
3300/65 Dual Probe MonitorThis module accepts a proximity probe observing the machine's shaft and a compatible Seismoprobe® (moving-coil) or Velomitor® (piezo-electric) velocity transducer measuring the motion of the machine's case. The monitor combines these signals to provide shaft relative, casing absolute, and shaft absolute vibration measurements, providing indication and display for each. Dual Probe measurements are designed for machines with fluid film bearings, such as large steam and gas turbines, where a significant amount of shaft vibration is transmitted to the case.
3300/70 Dual Valve Position IndicatorThis module provides continuous indication of one or two control valve openings and is designed for use with Turbine Supervisory Instrumentation (TSI) systems. It is an indicator only; it does not provide alarm capability. Valve position is measured by observing the amount of rotation of the valve's cam shaft using a Linear Variable Differential Transformer (LVDT) or rotary potentiometer.
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