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The Bently Nevada 79492-01 is a 3300/35 Six-Channel RTD Temperature Monitor designed for continuous temperature monitoring in Bently Nevada 3300 systems.
The monitor provides six independent temperature channels and accepts up to six resistance temperature detector inputs. The identified 79492-01 configuration uses 3-wire 100 ohm platinum RTDs with an alpha coefficient of 0.00392.
This configuration has a full-scale measurement range of 0 to 300 degF. Each channel provides independent temperature indication and alarm processing for machinery monitoring applications.
The front panel includes a four-digit LCD for measured temperature, channel status, alarms, bypass status, and diagnostic information. Individual recorder outputs are available for all six channels.
Six independent temperature monitoring channels
Designed for Bently Nevada 3300 machinery monitoring systems
3300/35 RTD input configuration
Six RTD input capability
3-wire 100 ohm platinum RTD input
Platinum alpha coefficient of 0.00392
0 to 300 degF configured full-scale range
Two independently configurable alarm levels per channel
Front-panel LCD temperature and status indication
Individual recorder output for each channel
Epoxy-sealed alarm relay configuration
Front-panel controls for channel and alarm information
Bearing temperature monitoring
Machinery temperature protection
Motor and generator temperature monitoring
Rotating equipment condition monitoring
Multi-point RTD temperature measurement
Replacement of existing 79492-01 temperature monitor assemblies in 3300 systems
| Option | Configuration |
|---|---|
| System | 3300/35 Six-Channel Temperature RTD Monitor |
| Full-scale Range Option | 02 - 0 to 300 degF |
| Transducer Input Option | 01 - 100 ohm platinum, alpha 0.00392, 3-wire |
| Alarm Relay Option | 01 - Epoxy-sealed |
| Agency Approval Option | 01 - CSA/NRTL/C |
| Safety Barrier Option | 00 - None |
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 79492-01 |
| Product Family | 3300/35 |
| Product Type | Six-Channel RTD Temperature Monitor |
| Number of Channels | 6 |
| Input Type | RTD |
| Power Consumption | 4 W nominal |
| Rack Space Requirement | 2 rack positions |
| Weight | 2.8 kg (6.2 lb) |
| Parameter | Specification |
|---|---|
| Configured Sensor Type | 100 ohm platinum RTD |
| Alpha Coefficient | 0.00392 |
| Wiring Configuration | 3-wire |
| Configured Full-scale Range | 0 to 300 degF |
| Maximum Number of Inputs | 6 |
| Parameter | Specification |
|---|---|
| Display Accuracy with Tenth Digit | Within +/-1 degC maximum |
| Display Accuracy without Tenth Digit | +/-1.5 degC |
| Accuracy Reference Temperature | +25 degC |
| Parameter | Specification |
|---|---|
| Number of Recorder Outputs | 6, one per channel |
| Available Current Output | +4 to +20 mA |
| Available Voltage Output | +1 to +5 Vdc |
| Available Voltage Output | 0 to -10 Vdc |
| Voltage Output Impedance | 100 ohm |
| Minimum Voltage-output Load | 10 kohm |
| 4-20 mA Load Resistance | 0 to 600 ohm |
| Parameter | Specification |
|---|---|
| Alarm Levels | Alarm 1 and Alarm 2 per channel |
| Alarm Setpoint Range | 0 to +500 degC (0 to +1000 degF) |
| Alarm Setpoint Resolution | 1 digit |
| Alarm Repeatability | Within +/-1 degC |
| Alarm 1 Function | Over-alarm |
| Alarm 2 Function | User-programmable over- or under-alarm |
| Relay Configuration | Epoxy-sealed |
| Parameter | Specification |
|---|---|
| Display | 4-digit LCD with decimal point |
| Display Modes | SCAN and HIGH READ |
| Display Resolution | 0.1 or 1, user-programmable |
| Status Indication | OK, Alarm 1, Alarm 2, Bypass and First Out |
| Front Controls | Alarm 1, Alarm 2, Mode and Channel Step |
| OK Indicator | Green LED |
| Alarm Indicators | Alarm 1 and Alarm 2 LEDs |
| Bypass Indicator | Red LED |
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 to +65 degC |
| Storage Temperature | -40 to +85 degC |
| Relative Humidity | Up to 95%, non-condensing |
Confirm the part number 79492-01 before replacing an installed monitor.
Verify the existing system uses the 3300/35 RTD temperature-monitor architecture.
Confirm the required RTD type and configured full-scale range.
Record existing alarm, recorder-output, and bypass settings before removal.
Isolate applicable system circuits before disconnecting the installed monitor.
Confirm the RTD field wiring before reconnecting all six channels.
Install the monitor in the correct 3300 rack positions.
Check monitor calibration after installing a spare unit.
Verify all six temperature channels before returning the system to normal operation.
The 79492-01 configuration uses 3-wire 100 ohm platinum RTDs with an alpha coefficient of 0.00392.
Recorder outputs can be configured for +4 to +20 mA, +1 to +5 Vdc, or 0 to -10 Vdc according to system requirements.
Alarm 1 operates as an over-temperature alarm. Alarm 2 can be configured for either over-temperature or under-temperature operation.
Alarm reset behavior, time delay, First Out functions, recorder behavior during NOT OK conditions, and display resolution are field-programmable options.
Verify each RTD channel independently after installation.
Compare displayed temperatures with expected machine conditions before enabling alarm actions.
Check Alarm 1 and Alarm 2 setpoints for every active channel.
Verify individual recorder outputs if the monitor is connected to external recording or control equipment.
A replacement monitor should be checked and recalibrated as necessary before normal service.
The 79492-01 should be matched to the existing 3300/35 monitor configuration rather than selected only by the Six-Channel Temperature Monitor description.
Verify the RTD type, measurement range, relay configuration, agency option, and safety-barrier configuration before replacement.
Record field-programmable settings before removing the existing unit. This reduces commissioning work and helps preserve the original machinery protection strategy.
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Returns & Warranty






The Bently Nevada 79492-01 is a 3300/35 Six-Channel RTD Temperature Monitor designed for continuous temperature monitoring in Bently Nevada 3300 systems.
The monitor provides six independent temperature channels and accepts up to six resistance temperature detector inputs. The identified 79492-01 configuration uses 3-wire 100 ohm platinum RTDs with an alpha coefficient of 0.00392.
This configuration has a full-scale measurement range of 0 to 300 degF. Each channel provides independent temperature indication and alarm processing for machinery monitoring applications.
The front panel includes a four-digit LCD for measured temperature, channel status, alarms, bypass status, and diagnostic information. Individual recorder outputs are available for all six channels.
Six independent temperature monitoring channels
Designed for Bently Nevada 3300 machinery monitoring systems
3300/35 RTD input configuration
Six RTD input capability
3-wire 100 ohm platinum RTD input
Platinum alpha coefficient of 0.00392
0 to 300 degF configured full-scale range
Two independently configurable alarm levels per channel
Front-panel LCD temperature and status indication
Individual recorder output for each channel
Epoxy-sealed alarm relay configuration
Front-panel controls for channel and alarm information
Bearing temperature monitoring
Machinery temperature protection
Motor and generator temperature monitoring
Rotating equipment condition monitoring
Multi-point RTD temperature measurement
Replacement of existing 79492-01 temperature monitor assemblies in 3300 systems
| Option | Configuration |
|---|---|
| System | 3300/35 Six-Channel Temperature RTD Monitor |
| Full-scale Range Option | 02 - 0 to 300 degF |
| Transducer Input Option | 01 - 100 ohm platinum, alpha 0.00392, 3-wire |
| Alarm Relay Option | 01 - Epoxy-sealed |
| Agency Approval Option | 01 - CSA/NRTL/C |
| Safety Barrier Option | 00 - None |
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 79492-01 |
| Product Family | 3300/35 |
| Product Type | Six-Channel RTD Temperature Monitor |
| Number of Channels | 6 |
| Input Type | RTD |
| Power Consumption | 4 W nominal |
| Rack Space Requirement | 2 rack positions |
| Weight | 2.8 kg (6.2 lb) |
| Parameter | Specification |
|---|---|
| Configured Sensor Type | 100 ohm platinum RTD |
| Alpha Coefficient | 0.00392 |
| Wiring Configuration | 3-wire |
| Configured Full-scale Range | 0 to 300 degF |
| Maximum Number of Inputs | 6 |
| Parameter | Specification |
|---|---|
| Display Accuracy with Tenth Digit | Within +/-1 degC maximum |
| Display Accuracy without Tenth Digit | +/-1.5 degC |
| Accuracy Reference Temperature | +25 degC |
| Parameter | Specification |
|---|---|
| Number of Recorder Outputs | 6, one per channel |
| Available Current Output | +4 to +20 mA |
| Available Voltage Output | +1 to +5 Vdc |
| Available Voltage Output | 0 to -10 Vdc |
| Voltage Output Impedance | 100 ohm |
| Minimum Voltage-output Load | 10 kohm |
| 4-20 mA Load Resistance | 0 to 600 ohm |
| Parameter | Specification |
|---|---|
| Alarm Levels | Alarm 1 and Alarm 2 per channel |
| Alarm Setpoint Range | 0 to +500 degC (0 to +1000 degF) |
| Alarm Setpoint Resolution | 1 digit |
| Alarm Repeatability | Within +/-1 degC |
| Alarm 1 Function | Over-alarm |
| Alarm 2 Function | User-programmable over- or under-alarm |
| Relay Configuration | Epoxy-sealed |
| Parameter | Specification |
|---|---|
| Display | 4-digit LCD with decimal point |
| Display Modes | SCAN and HIGH READ |
| Display Resolution | 0.1 or 1, user-programmable |
| Status Indication | OK, Alarm 1, Alarm 2, Bypass and First Out |
| Front Controls | Alarm 1, Alarm 2, Mode and Channel Step |
| OK Indicator | Green LED |
| Alarm Indicators | Alarm 1 and Alarm 2 LEDs |
| Bypass Indicator | Red LED |
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 to +65 degC |
| Storage Temperature | -40 to +85 degC |
| Relative Humidity | Up to 95%, non-condensing |
Confirm the part number 79492-01 before replacing an installed monitor.
Verify the existing system uses the 3300/35 RTD temperature-monitor architecture.
Confirm the required RTD type and configured full-scale range.
Record existing alarm, recorder-output, and bypass settings before removal.
Isolate applicable system circuits before disconnecting the installed monitor.
Confirm the RTD field wiring before reconnecting all six channels.
Install the monitor in the correct 3300 rack positions.
Check monitor calibration after installing a spare unit.
Verify all six temperature channels before returning the system to normal operation.
The 79492-01 configuration uses 3-wire 100 ohm platinum RTDs with an alpha coefficient of 0.00392.
Recorder outputs can be configured for +4 to +20 mA, +1 to +5 Vdc, or 0 to -10 Vdc according to system requirements.
Alarm 1 operates as an over-temperature alarm. Alarm 2 can be configured for either over-temperature or under-temperature operation.
Alarm reset behavior, time delay, First Out functions, recorder behavior during NOT OK conditions, and display resolution are field-programmable options.
Verify each RTD channel independently after installation.
Compare displayed temperatures with expected machine conditions before enabling alarm actions.
Check Alarm 1 and Alarm 2 setpoints for every active channel.
Verify individual recorder outputs if the monitor is connected to external recording or control equipment.
A replacement monitor should be checked and recalibrated as necessary before normal service.
The 79492-01 should be matched to the existing 3300/35 monitor configuration rather than selected only by the Six-Channel Temperature Monitor description.
Verify the RTD type, measurement range, relay configuration, agency option, and safety-barrier configuration before replacement.
Record field-programmable settings before removing the existing unit. This reduces commissioning work and helps preserve the original machinery protection strategy.
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Returns & Warranty
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| Color pattern |
Silver
Greyish White
|
| Country of origin |
United States
|