Description
4-channel RTD module, resolution 16 bits
Model and Article Information
- Model Number: EM AR04
- Article Number: E 288-3AR04-0AA1
- Description: 4-channel RTD module with 16-bit resolution for accurate temperature sensing and measurement.
Physical and Power Specifications
- Dimensions (WxHxD): 47 mm × 100 mm × 81 mm
- Power Consumption: 1.5 W
- Current Consumption:
- SM bus: 120 mA
- 24V DC: 40 mA
Analog Input Specifications
- Number of Inputs: 4 (for multiple temperature measurements)
- Measuring Principle: Sigma-Delta (provides high accuracy in analog-to-digital conversion)
- Resolution:
- Temperature: 0.1°C / 0.1°F
- Voltage: 15 bits + symbol bits (providing high precision for voltage measurements)
- Max. Voltage Resistance: ±35V (protects against voltage spikes or surges)
- Max Power Consumption of Sensor: 0.5 mW
Isolation and Protection
- Isolation:
- Field side and logic side: 500V AC
- Field side and 24V DC side: 500V AC
- 24V DC side and logic side: 500V AC
- Channel to Channel Isolation: None (the channels are not isolated from each other)
- Common Mode Rejection: >120 dB (excellent noise rejection capability)
- Repeatability: ±0.05% FS (Full Scale)
Cable and Sensor Specifications
- Cable Loop Resistance (Max):
- 20Ω for standard RTD (Cu10), with a maximum of 2.7Ω for special configurations.
- Cable Length: Up to 100 meters with shielded twisted pair cable, ensuring accurate temperature measurement over long distances.
Diagnostic Features
- Diagnosis Capabilities:
- Overflow/underflow detection
- Circuit break detection
- 24V DC low voltage detection
- Cable Length and Shielding: Supports up to 100 meters with shielded twisted pair cables, enhancing noise immunity and signal integrity over longer distances.
Frequency Rejection and Filter Settings
- Rejection Frequency Selection: This feature allows users to select the filter for different frequencies, ensuring optimal performance in environments with electrical noise. Options include:
- 400 Hz (2.5 ms integration time)
- 60 Hz (16.6 ms integration time)
- 50 Hz (20 ms integration time)
- 10 Hz (100 ms integration time)
- Note: When selecting the 400 Hz filter, the integration time is reduced to 10 ms, ensuring both accuracy and effective noise suppression at 100 Hz and 200 Hz frequencies.
