The GE / Bently Nevada 3300 Analog Six-Channel Temperature Monitor provides continuous temperature surveillance across six independent channels for critical industrial machinery. Available as the 3300/30 TC Monitor for thermocouple inputs or the 3300/35 RTD Monitor for resistance temperature detectors, this unit delivers display accuracy within ±1°C (1.8°F) at +25°C ambient. Each channel features digitally adjustable alarm setpoints from 0 to +500°C (0 to +1000°F), repeatable within ±1°C once configured. The monitor enables early detection of temperature-related equipment degradation, reducing unplanned downtime and preventing failure in demanding industrial environments.
## Technical Specifications
The 3300/30 TC Monitor accepts thermocouple signals (grounded or non-grounded tip) with user-programmable types including Type J, K, T, and E, each rated to 250–500°C (500–1000°F). The 3300/35 RTD Monitor accommodates 3-wire and 4-wire Resistance Temperature Detectors: 100 Ω platinum (α = 0.00385 or 0.00392) to 500°C / 1000°F, 120 Ω nickel to 150°C / 300°F, and 10 Ω copper to 100°C / 200°F. RTD sensor changes between platinum/nickel and copper require monitor recalibration via field-changeable plug-in jumpers.
Input signal range is 0 to -10 Vdc with 100 Ω input impedance. Transducer power supply operates at -24 Vdc or -18 Vdc (configurable). Power consumption is nominal 4 watts, with peak consumption of 7.7 watts. Display resolution is user-programmable to 0.1 or 1°C.
## Key Features
• Six independent input channels per monitor
• Display accuracy within ±1°C (1.8°F) maximum with tenths digit displayed; ±1.5°C (2.7°F) without tenths
• Alarm setpoint repeatability within ±1°C once programmed
• Recorder output accuracy: ±1.8% of signal ±0.09 mA offset (4–20 mA); ±2.2% of signal ±10 mV offset (1–5 Vdc); ±2.2% of signal ±15 mV offset (0 to -10 Vdc)
• 2-wire detectors connectable to 3- or 4-wire input modules with proper wiring
## Typical Applications
Motor and generator temperature monitoring, bearing and lubrication circuit surveillance, steam turbine protection, and process fluid temperature control in petrochemical, power generation, and manufacturing environments.
## Compatibility & Integration
The modular 3300 series design allows thermocouple and RTD monitors to operate independently or integrated within larger machinery protection systems requiring multi-point temperature data logging and alarm annunciation.
