Bentley Nevada 133819-02 3500/61 RTD/TC Non-Isolated I/O Module

Inputs

• Signal: Accepts from 1 to 6 RTD or TC transducer signals.
• Input Impedance: Greater than 10 MΩ for each lead input.

Power Consumption

• 3500/60: Nominal consumption of 7 watts.
• 3500/61: Nominal consumption of 9 watts.

Transducers

Thermocouples (TCs)

• Type E: -100 °C to +1000 °C (-148 °F to +1832 °F)
• Type J: 0 °C to +760 °C (+32 °F to +1400 °F)
• Type K: 0 °C to +1370 °C (+32 °F to +2498 °F)
• Type T: -160 °C to +400 °C (-256 °F to +752 °F)

RTDs

• 100Ω 3-wire & 4-wire platinum RTD (alpha = 0.00385):
  • -200 °C to +850 °C (-328 °F to +1562 °F)
  • With external barriers: -50 °C to +850 °C (-122 °F to +1562 °F)
• 100Ω 3-wire & 4-wire platinum RTD (alpha = 0.00392):
  • -200 °C to +700 °C (-328 °F to +1292 °F)
  • With external barriers: -50 °C to +850 °C (-122 °F to +1562 °F)
• 120Ω 3-wire & 4-wire nickel RTD:
  • -80 °C to +260 °C (-112 °F to +500 °F)
• 10Ω 3-wire & 4-wire copper RTD:
  • -100 °C to +260 °C (-148 °F to +500 °F)
  • With external barriers: -50 °C to +850 °C (-122 °F to +1562 °F)

Note: Platinum RTDs with 0.00385 alphas are the worldwide industrial standard and are recommended for all applications. Lower OK limit with external barriers is -50 °C.

I/O Modules

• Isolation: Isolated TC I/O modules have 250 Vdc of isolation between channels.

Outputs

• Front Panel LEDs:
  • OK LED: Indicates when the Temperature Monitor is operating properly.
  • TX/RX LED: Indicates when the Temperature Monitor is communicating with other modules in the 3500 rack.
  • Bypass LED: Indicates when the Temperature Monitor is in Bypass Mode.

RTD Current Source Value

• 925 ±15 µA @ 25°C per transducer (single supply for the 4-wire RTD and two supplies for the 3-wire).

Recorder

• Output: +4 to +20 mA, values are proportional to monitor full-scale. Individual recorder values are provided for each channel. Monitor operation is unaffected by short circuits on recorder outputs.

Voltage Compliance (current output)

• 0 to +12 Vdc range across load. Load resistance is 0 to 600 Ω.

Resolution

• 0.3662 µA per bit ±0.15% error at room temperature ±0.4% error over temperature range.

Signal Conditioning

• Note: Specified at +25 °C (+77 °F) unless otherwise noted. Full-scale range for each channel is set in the field via 3500 Configuration Software. No calibration is required.

RTDs and TCs (except for 10Ω Copper RTDs)

• Resolution: 1 °C or 1 °F
• Accuracy:
  • Internal Termination: Non-Isolated: ±3 °C at 25 °C (±5.4 °F at 77 °F).
  • External Termination: Non-Isolated: ±3 °C at 25 °C (±5.4 °F at 77 °F).
  • Isolated: Bulkhead Rack: ±2 °C at 25 °C (±3.6 °F at 77 °F).

Environmental Limits

• Operating Temperature: -30 °C to +65 °C (-22 °F to +150 °F) when used with Internal/External Termination I/O Modules; 0 °C to +65 °C (32 °F to +150 °F) when used with Internal Barrier I/O Modules (Internal Termination).
• Storage Temperature: -40 °C to +85 °C (-40 °F to +185 °F).

Compliance and Certifications

• EMC Standards:
  • EN 61000-6-2 Immunity for Industrial Environments
  • EN 55011/CISPR 11 ISM Equipment
  • EN 61000-6-4 Emissions for Industrial Environments

Physical Monitor Module Dimensions

• Dimensions: 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in)
• Weight: 0.91 kg (2.0 lbs.)

I/O Modules Dimensions

• Dimensions: 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in)
• Weight: 0.45 kg (1.0 lbs.)

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