The Bently Nevada 3500/61 is a high-performance 6-channel temperature monitoring module designed for the 3500 Machinery Protection System. This module provides continuous, real-time temperature monitoring for critical rotating machinery, accepting inputs from both Resistance Temperature Detectors (RTDs) and Thermocouples (TCs) .
The 3500/61 conditions these temperature signals and compares them against user-programmable alarm setpoints. Its key distinguishing feature is the provision of recorder outputs for each of its six channels , making it the preferred choice for applications requiring analog output for trend recording or DCS integration.
Item No :
3500/61Order(MOQ) :
1Payment :
EXWProduct Origin :
USAShipping Port :
Wuhan, Hubei, ChinaLead Time :
3-5 daysWeight :
2kgProduct Showroom
Bently Nevada 3500/61 Temperature Monitor
6-Channel Temperature Monitoring Module for 3500 Machinery Protection Systems
New and Original
More details
|
Country of origin |
USA |
|
Product condition |
New |
|
Warranty |
one year |
|
Payment Method |
T/T, Western Union |
|
Shipping Method |
DHL/FedEX/UPS/TNE/EMS |
6 Independent Temperature Channels: Monitor up to six temperature points simultaneously from a single module, maximizing rack efficiency
Dual Sensor Support: Accepts both RTD (3-wire and 4-wire platinum, nickel, copper) and Thermocouple (Types E, J, K, T) inputs, providing exceptional flexibility for diverse applications
Built-in Recorder Outputs: Each channel provides dedicated 4-20 mA recorder outputs for integration with chart recorders, DCS, or PLC systems
User-Programmable Alarm Setpoints: Fully configurable Alert and Danger setpoints per channel using 3500 Rack Configuration Software
Flexible I/O Module Options: Available in RTD/TC non-isolated and TC isolated versions; non-isolated version supports mixing of RTD and TC inputs on the same module
Channel-to-Channel Isolation (TC Isolated Version): Provides 250 VDC isolation to protect against external interference and ground loops
SIL 2 Certified for Safety Applications: Certified for use in safety-related applications up to SIL 2 per IEC 61508, suitable for critical machinery protection
High Input Impedance: Greater than 10 MΩ for each lead input ensures minimal loading on field sensors
Hazardous Area Approvals: Certified for Class I, Division 2 and Zone 2 hazardous locations
Triple Modular Redundant (TMR) Support: Configurable for TMR applications with voting logic to prevent single-point failures
| Category | Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model Number | 3500/61 |
| Product Type | Temperature Monitor |
| Channels | 6 independent channels |
| Input Types | RTD (3-wire, 4-wire) and Thermocouple (E, J, K, T) |
| Input Impedance | >10 MΩ per lead |
| Recorder Outputs | 4-20 mA per channel |
| Power Consumption | 9 Watts typical |
| Operating Temperature | -30°C to +65°C (with Internal/External Termination I/O) |
| Storage Temperature | -40°C to +85°C |
| Main Module Dimensions | 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in) |
| Main Module Weight | 0.91 kg (2.0 lb) |
| Rack Space | 1 full-height front slot + 1 full-height rear slot (I/O module) |
| Safety Certification | SIL 2 (IEC 61508) |
| Hazardous Area Approvals | Class I, Div 2; Class I, Zone 2; ATEX; IECEx |
| Country of Origin | USA |
| Type | Temperature Range |
|---|---|
| Type E | -100°C to +1000°C |
| Type J | -18°C to +760°C |
| Type K | -18°C to +1370°C |
| Type T | -160°C to +400°C |
| Type | Temperature Range |
|---|---|
| 100Ω Platinum (α=0.00385) | -200°C to +850°C |
| 100Ω Platinum (α=0.00392) | -200°C to +700°C |
| 120Ω Nickel | -80°C to +260°C |
| 10Ω Copper | -100°C to +260°C |
The 3500/61 is configured with different I/O modules based on application requirements :
| I/O Option | Description | Termination |
|---|---|---|
| -01 | RTD/TC Non-isolated I/O Module | Internal Terminations |
| -02 | RTD/TC Non-isolated I/O Module | External Terminations |
| -03 | TC Isolated I/O Module | Internal Terminations |
| -04 | TC Isolated I/O Module | External Terminations |
| -05 | RTD/TC Non-isolated I/O Module | Internal Terminations |
Key Differences:
RTD/TC Non-isolated: Allows mixing of RTD and TC inputs on the same module; more cost-effective
TC Isolated: Provides 250 VDC channel-to-channel isolation; ideal for applications with significant ground potential differences
The 3500/61 Temperature Monitor is deployed across industries requiring continuous temperature monitoring of critical rotating machinery:
| Industry | Application |
|---|---|
| Power Generation | Bearing temperature monitoring on steam and gas turbines; generator winding temperature |
| Oil & Gas | Compressor bearing and discharge temperature monitoring; pipeline pump protection |
| Chemical Processing | Critical pump bearing temperature; reactor agitator monitoring |
| Pulp & Paper | Paper machine dryer bearing monitoring |
| Mining | Crusher and mill bearing temperature protection |
Typical Measurement Points:
Thrust and radial bearing temperatures
Oil inlet and outlet temperatures
Process gas/fluid temperatures
Motor winding temperatures
Exhaust gas temperatures
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