YOKOGAWA AAI141-H50 S2 Analog input module

Specific Parameters

Electrical Parameters
Input Signal Type: 4-20mA DC, 0-10V DC, compatible with thermocouple and RTD signals
Number of Channels: 16 channels, non-isolated design
Resolution: 16-bit
Measurement Accuracy: ±0.1% of full scale
Input Impedance: 250Ω (current signal), ≥100kΩ (voltage signal)
Isolation Voltage: 1500Vrms (between signal and system)
Communication Protocol: Supports HART protocol, compatible with HART 7 standard
Sampling Rate: Up to 100 samples per second
Power Supply: Powered by DCS system backplane, typical value 5V DC
Power Consumption: ≤2.5W under normal operation
Environmental Parameters
Operating Temperature: -20°C to 70°C, continuous operation without condensation
Storage Temperature: -40°C to 85°C
Relative Humidity: 10% to 95% (non-condensing)
EMC Immunity: Complies with EN 61000-4 series standards, ESD protection ±8kV contact discharge
Vibration Resistance: 10-500Hz, 1g acceleration (IEC 60068-2-6 standard)
Shock Resistance: 15g acceleration, 11ms duration (IEC 60068-2-27 standard)
Noise Level: ≤0.2µVrms
Mechanical Parameters
Dimensions: 111mm (L) × 35mm (W) × 110mm (H), compatible with standard DCS module slots
Mounting Method: Plug-in mounting on DCS system backplane, fixed with terminal block
Interface Type: Compatible with pressure clamp terminals and dual-pressure terminal blocks
Housing Material: Flame-retardant epoxy resin substrate, anti-corrosion surface treatment
Weight: Approximately 0.5kg
Indicators: Power (PWR, green), running (RUN, green), fault (ERR, red), communication (COM, yellow)

Product Performance

The module adopts high-precision signal conditioning circuit, with analog signal acquisition error ≤±0.1% of full scale, maintaining measurement stability over the entire temperature range. The HART communication function supports device configuration, parameter reading and fault diagnosis, enabling remote management of intelligent transmitters with data interaction delay ≤2s.

16 channels collect signals independently, and the failure of a single channel does not affect the operation of other channels, ensuring strong system redundancy. Integrated input protection circuit can withstand instantaneous overvoltage impact, effectively preventing module damage caused by abnormal on-site signals. The anti-electromagnetic interference design enables the module to maintain signal noise ≤0.2µVrms in industrial strong electromagnetic environments, ensuring accurate and reliable collected data.

The module supports online hot swapping, allowing replacement without interrupting DCS system operation, with high maintenance convenience. The mean time between failures (MTBF) is ≥100,000 hours, complying with industrial-grade long-life operation requirements and adapting to continuous production scenarios.

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