The Bently Nevada 79492-01 is a high-precision temperature monitoring module belonging to the 3300 series machinery protection system. Specifically identified as the 3300/30 Six-Channel Temperature Monitor, this unit is designed to continuously monitor up to six independent temperature points from various sources, such as RTDs (Resistance Temperature Detectors) or Thermocouples. It provides critical thermal data for rotating machinery, ensuring that bearings, windings, and process fluids remain within safe operating limits to prevent mechanical failure or overheating.
Product Specifications
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Model Number: 79492-01 (3300/30)
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Monitoring Type: Six-Channel Temperature Monitor
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Dimensions: 205 mm x 25 mm x 115 mm
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Weight: 0.55 kg
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Country of Origin: USA
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Input Types: Supports Platinum (Pt100), Copper (Cu10), or Nickel (Ni120) RTDs, and Type K, J, E, or T Thermocouples
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Display: Front-panel LCD displaying channel value and alarm status
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Accuracy: ±1°C for RTDs; ±2°C for Thermocouples
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Alarm Setpoints: Two independent alarms per channel (Alert and Danger)
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Output: 4-20 mA proportional analog outputs for each channel
Application Fields
This module is widely implemented in power plants, oil refineries, and large industrial facilities. Its primary application fields include monitoring motor and generator windings, turbine bearing temperatures, thrust pads, and pump housing temperatures. By integrating this module into a 3300 rack, operators can correlate vibration data with temperature trends, providing a holistic view of the machine’s mechanical health and facilitating predictive maintenance strategies.
Product Instructions
The 79492-01 must be installed into a designated slot within a Bently Nevada 3300 series rack. Before installation, use the internal jumpers or configuration switches to select the correct sensor type (RTD or Thermocouple) for each channel. All field wiring should be shielded and routed away from high-voltage cables to minimize noise interference. Once inserted, the module draws power from the rack’s backplane. Users can toggle through the six channels using the “Select” button on the front panel to view individual temperatures on the LCD. Alarm setpoints should be adjusted via the “Set” pot on the front of the module to match the specific safety requirements of the monitored equipment.
FAQ: Common Questions and Answers
Q: Can I mix RTDs and Thermocouples on the same 79492-01 module? A: No, generally the 3300/30 module is configured at the factory or via hardware jumpers for a specific type of sensor across all six channels. You should verify the specific hardware configuration before connecting different sensor types.
Q: What does a “NOT OK” LED indication mean? A: The “NOT OK” LED illuminates if the module detects a fault in the transducer circuit (such as a broken wire or short circuit) or an internal failure within the module itself.
Q: Is it possible to bypass the alarms during machine startup? A: Yes, the 3300/30 module includes a “Bypass” function that can be activated via the rack interface or external contacts to prevent nuisance trips during transient operating conditions.
For professional procurement and technical support regarding the Bently Nevada 79492-01, please consult our technical sales department.
Recommended Similar Models
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Bently Nevada 3500/60 (6-Channel Temperature Monitor – 3500 Series)
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Bently Nevada 3500/61 (6-Channel Temperature Monitor with Recorders)
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Bently Nevada 79492-02 (Alternative 3300/30 configuration)
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Bently Nevada 3300/35 (Dual Temperature Monitor)
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Bently Nevada 3500/65 (16-Channel Temperature Monitor)
