Overview
The FBM203 series modules, including FBM203, FBM203b, FBM203c, and FBM203d, are designed to accept RTD (Resistance Temperature Detector) sensor inputs with varying resistance ranges:
- FBM203: Supports 2- or 3-wire RTD sensor inputs with a resistance range of 0 to 320 ohms.
- FBM203b: Supports 2- or 3-wire RTD sensor inputs with a resistance range of 0 to 640 ohms.
- FBM203c: Supports 2- or 3-wire RTD sensor inputs with a resistance range of 0 to 30 ohms.
- FBM203d: Supports 4-wire RTD sensor inputs with a resistance range of 0 to 320 ohms.
Each analog input channel in these modules is galvanically isolated from other channels and from the ground, ensuring signal integrity and safety.
Specifications
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Input Channels (8)
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Analog Accuracy (Includes Linearity)
- FBM203/d: ±0.03% of span
- FBM203b: ±0.03% of span
- FBM203c: ±0.1% of span
- Accuracy Temperature Coefficient: ±50 ppm/ºC
- Input Signal A/D Conversion: Each channel performs its own A/D signal conversion using an independent sigma-delta conversion technique.
- Integration Period: Software configurable.
- Common Mode Rejection: >125 dB at 50 or 60 Hz
- Normal Mode Rejection: >95 dB at 50 or 60 Hz
- Typical Resistance Temperature Sensors: Platinum (DIN), Platinum (SAMA), Platinum (IEC), or Nickel (SAMA)
- FBM203c Copper: 10 ohms nominal at 25°C
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Analog Accuracy (Includes Linearity)
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Power Requirements
- Input Voltage Range (Redundant): 24 V dc +5%, -10%
- Consumption: 3 W (maximum)
- Heat Dissipation: 3 W (maximum)
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Operating Conditions
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Temperature
- Module: 0 to +70°C (32 to +158°F)
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Termination Assemblies
- Polyamide TA: 0 to +70°C (32 to +158°F)
- PVC TA: 0 to +50°C (32 to +122°F)
- Relative Humidity: 5 to 95% (non-condensing)
- Altitude: -300 to +3,000 m (-1,000 to +10,000 ft)
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Temperature
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Storage Conditions
- Temperature: -40 to +70°C (-40 to +158°F)
- Relative Humidity: 5 to 95% (non-condensing)
- Altitude: -300 to +12,000 m (-1,000 to +40,000 ft)
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Dimensions
- Module Height: 102 mm (4 in); 114 mm (4.5 in) including mounting lugs
- Width: 45 mm (1.75 in)
- Depth: 104 mm (4.11 in)
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