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Bently Nevada

Bently Nevada 3300/30 79502-01 Six-Channel Temperature Monitor
SKU: 79502-01
In stock: 15
Description

Bently Nevada 3300/30 79502-01 Six-Channel Temperature Monitor

The Bently Nevada 3300/30 79502-01 serves as the primary 3300/30 Six-Channel Temperature Monitor utilized to execute continuous temperature acquisition, alarm evaluation, and recorder output generation across Bently Nevada 3300 machinery protection platforms. The monitor processes signals from RTD and thermocouple inputs, providing independent channel supervision for machinery and process temperature measurement functions.

Hardware Specifications

Parameter Specification
Model 3300/30 79502-01
Brand Bently Nevada
Origin United States
Product Type Six-Channel Temperature Monitor
System Series Bently Nevada 3300
Channel Capacity 6 independent channels
Rack Space Requirement Two rack positions (excluding positions 1 and 2)
Supported Thermocouples Type J, K, T, E
Supported RTDs 100 Ohm Platinum, 10 Ohm Copper, 120 Ohm Nickel, 3-wire
Resolution 1 deg C or 1 deg F
RTD Accuracy +/-1 deg C or +/-0.5% of span
Thermocouple Accuracy +/-2 deg C plus cold junction compensation error
Recorder Outputs 4-20 mA or 1-5 VDC
Alarm Functions Individual Alert and Danger setpoints per channel
Isolation Galvanic isolation between inputs and internal power
Update Rate Less than 1 second for all 6 channels
Operating Temp 0 deg C to 65 deg C
Storage Temp -40 deg C to 85 deg C
Relative Humidity Up to 95%
Weight Approximately 2.8 kg
Power Consumption Less than 8 W

Cold Junction Compensation and Temperature Signal Integrity

For thermocouple measurement applications, the 3300/30 monitor incorporates cold junction compensation functions to account for reference junction temperature variations. Compensation accuracy directly influences overall thermocouple measurement performance and contributes to channel-to-channel consistency across the six monitored inputs.

The module supports both grounded and non-grounded thermocouple configurations and can be configured for multiple sensor types. Galvanic isolation between field inputs and internal system power assists in reducing measurement disturbances caused by ground loops and common-mode electrical noise, particularly in machinery monitoring environments containing high-energy rotating equipment.

Frequently Asked Questions

Q: Can different temperature sensor technologies be connected to the monitor?
A: Yes. The module supports Type J, K, T, and E thermocouples as well as compatible 3-wire RTD configurations including 100 Ohm platinum, 10 Ohm copper, and 120 Ohm nickel sensors.

Q: Does each temperature channel have independent alarm capability?
A: Yes. Individual Alert and Danger alarm setpoints can be configured for each of the six monitoring channels.

Q: Are retransmission outputs available for integration with external systems?
A: Yes. Recorder outputs are available in either 4-20 mA or 1-5 VDC formats for external indication, recording, or control system interfaces.

Field Installation Guidelines

  • Install the module only in compatible Bently Nevada 3300 racks and do not place it in rack positions 1 or 2.

  • Verify sensor type configuration before connecting field wiring.

  • Use dedicated thermocouple extension cable matching the installed thermocouple type.

  • Maintain separation between temperature sensor wiring and power conductors to minimize electrical interference.

  • Route RTD lead wires as matched conductors to preserve measurement accuracy.

  • Ensure shield grounding practices follow site instrumentation standards and avoid multiple shield termination points unless required by plant design.

  • Verify Alert and Danger setpoints before placing monitored equipment into operation.

  • Perform functional checks on all six input channels following installation or maintenance activities.