135313-01 - Dual Vibration Monitor

SPECIFICATIONS:

Part Number: 135313-01
Manufacturer: Bently Nevada
Series: 3300/20
Product Type: Dual Vibration Monitor
Input Impedance: 10k Ohm
Sensitivity: 100 mV/mil (4 V/mm)
Power Consumption: 7.7 Watts
Signal Conditioning Accuracy: ±1% maximum
Output Impedance (voltage outputs): 100 Ohm
Voltage Compliance (current outputs): 0 to +12 Vdc
Gap Alarm Time Delay: 6 seconds
Shaft Power Supply: -24V DC
Operating Temperature: 0°C to +65°C
Power Supply Voltage: 125 V dc
Technology: Surface Mount
Size: ‎ 83 mm
Repair: 3-7 Day
Availability: In Stock
Weight: 1 Kg
Country of Origin: United States

FUNCTIONAL DESCRIPTION:

135313-01 is a Dual Vibration Monitor manufactured and designed by Bently Nevada as part of the 3300/20 Series used to control the machinery condition monitoring system. The primary function of the 3300/20 Dual Vibration Monitor is to measure the vibration of rotating shafts and provide real-time data for condition monitoring. By continuously tracking vibration levels, it helps identify early signs of mechanical faults such as bearing wear, imbalance, shaft misalignment, and mechanical looseness. The monitor is designed to receive input from two independent vibration transducers, such as proximity probes or velocity sensors, allowing simultaneous monitoring of two vibration channels.

MONITOR FUNCTIONS OF DUAL VIBRATION MONITOR:

• DUAL THRUST POSITION - Thrust position is the average position, or change in position, of a rotor in the axial direction concerning some fixed reference. The Dual Thrust Position Monitor provides continuous thrust position monitoring on two channels (A &B) for redundant protection. Normal thrust direction can be toward or away from the probe face. Voting logic ensures that failure of one channel will not give a false Danger alarm. Or voting logic allows for two independent thrust channels in less critical applications.

• PROBE GAP VOLTAGE - Probe gape is measured as a negative dc voltage that is directly proportional to the gap distance between the face of a proximity probe and the surface be monitored. The probe gap voltage for each channel is displayed on the front panel meter by pressing the GAP switch.

• OK - When the proximity output voltage is within its upper/lower limits, the transducer is defined as OK. The OK detection circuit controls the channel OK LED and the monitor relay drives to the OK relay. If the monitor has the latching OK option, a System Reset is required to reset the OK function.

• OK RELAY - The OK Relay is located on the Power Input Module. Every channel in the rack must be OK or bypassed to energize the OK Relay.

• ALARM - Pressing the ALERT and DANGER switches on the front panel of the monitor causes the corresponding Alert (first-level alarm) or Danger (second-level alarm) setpoints on each channel to be displayed on the front panel meter. ALERT and DANGER LEDs light when the thrust position signal level exceeds present levels for the selected time delay, and appropriate ALERT and DANGER alarm relay contacts are activated. Voting logic options determine when the Danger relay contacts are activated.

• FIRST OUT - Separate First Out circuits exist for Alert and Danger alarms. A monitor with First out option selected flashes a channel alarm LED if that monitor was the first channel in the rack to go into the alarm. Pressing the RESET switch acknowledges the First Out.

• ALARM RELAYS - Monitor alarms can be programmed for either latching or nonlatching mode. In the nonlatching mode, the alarm resets automatically when the alarm condition no longer exists. In the latching mode, the alarm condition must be reset manually by pressing the RESET switch on the front panel of the System Monitor (or by closing external Reset contacts). The alarm will not reset if the alarm condition still exists.

BUFFERED OUTPUT:

The channels A and B coaxial cable connectors on the front panel of the monitor and the terminals on the Signal Input Relay Module provide buffered signals from respective channel transducers. These connectors can be used for connection of external equipment. RECORDER OUTPUT - A recorder output is provided for each channel. Depending on the option selected, the recorder output levels, proportional to full scale, are either 0 to -10 Vdc, +1 to +5 Vdc, or +4 to +20 mA.

Cyclic self-test is performed automatically during monitor operation. Errors encountered during cyclic test disable the monitor and flash an LCD bar graph error code. Should the error be intermittent, the monitor will return to operation, but the error codes are stored for retrieval during user-invoked self-test. Stored error codes are indicated by the OK LEDs flashing at 5 Hz provided that the channel is OK.

WOC maintains the Largest Inventory of Replacement Parts for Bently Nevada Monitoring systems. Additionally, we offer warranty-backed unused and rebuilt boards and board repairs for damaged ones. Our team of professionals is available around the clock for your OEM needs. We at WOC are happy to help you with any automation needs you may have. Please contact our team by phone or email for pricing and availability on any components and repairs.

FREQUENTLY ASKED QUESTIONS:

What is the input signal range for the 3300/20 monitor?

The Bently Nevada 3300/20 Dual Vibration Monitor accepts input signals from proximity probes and velocity sensors. The standard input range for proximity probes is -20V to -2V DC, while for velocity sensors, it varies based on the specific sensor model but typically falls within 0 to 10V AC.

What is the accuracy of the 3300/20 vibration monitor?

The 3300/20 monitor provides high accuracy, with a typical measurement precision of ±1% full-scale range (FSR). This ensures that vibration readings are highly reliable, making it easier to identify developing faults in machinery before they escalate into significant issues.

How does the monitor provide output signals?

The 3300/20 monitor provides both analog and relay outputs. The analog output is available in 4-20 mA or 0-10V DC, which is proportional to the vibration amplitude and can be connected to external monitoring systems.