Precision Signal Conditioning for Field Sensors
This board conditions analog signals from field sensors for accurate process measurement. It accepts thermocouple, RTD, and millivolt inputs with exceptional linearity. Many plants rely on this module for temperature and pressure signal processing. The unit delivers stable, noise-free signals to the control system for reliable operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ARS15B |
| Dimensions | 150 mm × 110 mm × 40 mm (W × H × D) |
| Weight | 0.55 kg |
| Power Supply | 24 V DC ±10% |
| Power Consumption | 3 W typical |
| Input Channels | 8 differential analog inputs |
| Input Types | Thermocouple (J, K, T, E, R, S), RTD (Pt100), mV, V |
| Input Range (mV) | -10 mV to +100 mV |
| Input Range (V) | 0 V to 10 V |
| RTD Excitation | 0.5 mA constant current |
| Accuracy | ±0.05% of span |
| Temperature Drift | ±50 ppm/°C |
| Common Mode Rejection | 100 dB at 50/60 Hz |
| Normal Mode Rejection | 60 dB at 50/60 Hz |
| Input Impedance | ≥10 MΩ (mV/V), ≤10 Ω (RTD) |
| Cold Junction Compensation | Automatic (internal sensor) |
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -20°C to +70°C |
| Humidity Range | 5% to 85% RH (non-condensing) |
| Status Indicators | 1 Power LED, 1 Run LED, 8 Input Status LEDs |
| Terminal Type | Removable screw terminals |
| Wire Gauge | 0.2 mm² to 2.5 mm² |
| Certifications | CE, UL, CSA |
Input Channel Configuration and Sensor Support
This board houses eight differential input channels for various sensor types. Each channel accepts thermocouple signals from multiple calibration standards. RTD inputs use a precision 0.5 mA constant current excitation source. The module also handles millivolt and voltage signals from pressure transmitters.
Signal Processing and Noise Rejection
The unit employs high-performance filtering to reject common-mode and normal-mode noise. Common mode rejection reaches 100 dB at power line frequencies. This filtering ensures accurate measurement in electrically noisy industrial environments. The board delivers stable readings even with long sensor cable runs.
Power Consumption and Thermal Characteristics
This module draws only 3 W from the 24 V DC supply. Low power dissipation minimizes internal temperature rise. The board maintains accuracy across its full operating temperature range. Built-in cold junction compensation accounts for ambient temperature variations automatically.
Mechanical Dimensions and Mounting
The conditioner measures 150 mm wide with a compact height of 110 mm. Weighing just 0.55 kg, this unit fits easily into control cabinets. Removable screw terminals simplify wiring and future maintenance access. The board mounts on standard Yokogawa backplanes using guide rails.
Status Indication and Diagnostic Feedback
A power LED confirms the presence of supply voltage to the module. A run LED indicates normal processor operation. Eight individual input status LEDs show channel activity and fault conditions. This comprehensive visual feedback assists operators during commissioning and troubleshooting.
Accuracy and Long-Term Stability
This board achieves ±0.05% accuracy across its entire measurement range. Temperature drift of only ±50 ppm/°C ensures stable readings over time. The unit maintains calibration without frequent re-adjustment. Long-term stability exceeds five years under normal operating conditions.
Quality Approvals and Compliance
The ARS15B holds CE, UL, and CSA certifications for industrial use. These approvals guarantee compliance with international safety and EMC directives. Each board undergoes functional verification before packaging and shipment. This commitment to quality ensures reliable field performance.
Details
| Weight | 0.55 kg |
|---|---|
| Dimensions | 150 × 110 × 40 mm |
Reviews
There are no reviews yet.