Bently Nevada 128276-01 Dual channel temperature monitoring module
Specific Parameters
Electrical Parameters
Operating Voltage: 24V DC±10%, compatible with industrial standard power supply systemsInput Channels: 2 independent temperature input channels, supporting differential channel configurationMeasurement Types: Compatible with RTD (PT100, PT1000, Cu50) and thermocouple (K/J/T/S/R type)Measurement Range: RTD measurement -200℃ to +850℃, thermocouple measurement -270℃ to +1767℃Measurement Accuracy: RTD measurement ±0.2℃ (-50℃ to +250℃), thermocouple measurement ±0.5℃ (0℃ to +1000℃)Sensor Power Supply: RTD channels provide 2.5mA constant current excitation, thermocouple channels without excitation power supplyOutput Signals: 2 independent 4-20mA analog outputs, 2 alarm relay outputs (SPDT type)Communication Protocols: Compatible with 3500 system dedicated backplane bus, supporting Ethernet/IP and Modbus TCP/IP data interactionAlarm Settings: Each channel supports 2 sets of custom thresholds (warning, danger), compliant with API 670 standardDiagnostic Functions: Integrated self-diagnosis for sensor open circuit, short circuit, cold junction compensation abnormality and module power failure, real-time fault code outputInsulation Resistance: ≥100MΩ between channels and between channels and power supply (measured at 500V DC, normal temperature and state)Voltage Withstand Strength: ≥2500V AC between channels and between channels and power supply (1 minute no breakdown, leakage current ≤1mA)Certification Standards: Compliant with API 670, IEC 61508 SIL 2, CE, UL 508, RoHS 2.0 standards
Mechanical Parameters
Overall Dimensions: 48.3mm (W) × 82.6mm (H) × 190.5mm (D), half-height modular designWeight: Approximately 0.5kg, compatible with 3500 series standard frame slot installationMounting Method: Plug-in installation (compatible with 3500 series 19-inch frame), supporting online hot-swappingHousing Material: Die-cast aluminum alloy (main body) + flame-retardant engineering plastic (interface panel), anti-electromagnetic interferenceConnection Method: 16-pin pluggable terminal, compatible with shielded twisted-pair cables, supporting direct sensor accessProtection Rating: IP20 (module itself), relying on the overall protection of the 3500 frameStatus Indication: Channel-level green LED (normal signal), yellow LED (warning), red LED (danger); module-level power/fault LED
Environmental Parameters
Operating Temperature: -40℃ to +70℃, operation without derating over the entire temperature rangeStorage Temperature: -40℃ to +85℃, meeting extreme storage and transportation requirementsRelative Humidity: 5% to 95% (non-condensing), suitable for high-humidity industrial scenariosVibration Resistance: 10-500Hz frequency range, 1.5g acceleration (sine wave), no structural loosening or measurement driftShock Resistance: 20g acceleration (half-sine wave, duration 11ms), withstanding shocks in frame-mounted scenariosEMC Compliance: Meets EN 55014-1 (emission limits), EN 55014-2 (immunity), EN 61326-1 standardsInstallation Altitude: ≤2000m (normal operation), power derating 10% for every 1000m increase from 2000m to 5000m
Product Performance
Excellent measurement accuracy: Temperature measurement errors in a wide range are controlled at industrial high standards, with data reliability up to 99.9%Wide sensor compatibility: Supports mainstream RTD and thermocouple types simultaneously, no additional adapter modules requiredStable signal processing: Built-in cold junction compensation and anti-interference filtering algorithm, output signal ripple ≤0.1% peak-to-peakFast fault response: Alarm output response time ≤20ms after temperature over-limit, gaining time for equipment thermal protectionStrong system compatibility: Seamless integration with 3500 protection system, supporting real-time data interaction with DCS and SCADA systemsHigh maintenance convenience: Hot-swappable design with intuitive LED status indication, fault troubleshooting time ≤15 minutesOutstanding operational stability: Industrial-grade components and wide-temperature adaptation design, Mean Time Between Failures (MTBF) ≥350,000 hours
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