Bently Nevada 3500/61 External Termination Module 3500/61-02-01

Bently Nevada 3500/61-02-01 Temperature Monitor with Recorder Outputs

• Manufacturer & Model: Bently Nevada 3500/61-02-01 temperature monitor for 3500 series.
• I/O Type: RTD/TC non-isolated with external terminations.
• Approval: CSA/NRTL/C (Class I, Division 2). Made in U.S.A.

Key Specifications

• Power: 9 watts. Inputs: 1 to 6 RTD or TC signals.
• Input impedance: 10 MOhms per lead.
• Recorder outputs: 4 to 20 mA, 0 to 600 Ohm load.
• Resolution: 0.3662 µA per bit.
• Accuracy (external termination): ±1°C at 25°C in standard rack.

Thermocouple Ranges

• Type E: -100 to +1000°C. Type J: -18 to +760°C.
• Type K: -18 to +1370°C. Type T: -160 to +400°C.

RTD Ranges

• Platinum (0.00385): -200 to +850°C (recommended).
• Platinum (0.00392): -200 to +700°C.
• Nickel (120Ω): -80 to +260°C. Copper (10Ω): -100 to +260°C.

Physical

• Monitor module: 241.3 x 24.4 x 241.8 mm, 0.91 kg. One front slot.
• I/O module: 241.3 x 24.4 x 99.1 mm, 0.45 kg. One rear slot.
• Operating temp: -30 to +65°C. Storage: -40 to +85°C.

Package & Shipping

• Monitor module and I/O module with external terminations.
• Weight: 1.36 kg. Carriers: FedEx, UPS, DHL.

Frequently Asked Questions

• Q: Internal vs external termination - what's the difference?
  A: External termination (option 02) uses external terminal blocks for easier wiring. It also provides better accuracy: ±1°C vs ±3°C for internal termination.
• Q: What accuracy does this monitor provide?
  A: In a standard rack with external termination, accuracy is ±1°C at 25°C (±1.8°F at 77°F).
• Q: How many channels does the 3500/61 support?
  A: The monitor accepts 1 to 6 RTD or thermocouple transducer signals.
• Q: What is the CSA approval for this model?
  A: CSA/NRTL/C Class I, Division 2 certification for North American hazardous locations.
• Q: Which RTD type is recommended?
  A: Platinum RTD with alpha 0.00385 is the worldwide industrial standard and recommended for all applications.