Technical Specifications:

• Front Panel Size: 1/16 DIN (48 mm × 96 mm)
• Number of Input Channels: 4 universal input channels
• Scan Speed: 50 ms per channel (S50 specification)
• Alarm Outputs: 1 relay alarm output (SPDT) (S1 specification)
• Input Types: TC, RTD, mV, V, mA
• Communication Ports: RS-422 and RS-485 (dual ports)
• Internal Memory: 2 MB
• Recording Capacity: Approximately 2 million data points
• Power Supply: 24 VDC (±10%)
• Power Consumption: Max 5 W
• Operating Temperature: 0°C to +50°C (+32°F to +122°F)
• Protection Rating: IP65 (front panel)
• Dimensions (W × H × D): 48 mm × 96 mm × 100 mm
• Weight: Approximately 0.25 kg

Functional Features:

• 50 ms ultra-fast scan — captures rapid process changes
• 4 universal inputs with independent scaling per channel
• 1 alarm relay with configurable high/low/deviation setpoints
• RS-422/RS-485 dual communication for daisy-chain or point-to-point connection
• Trend, bar graph, and numeric display modes
• USB data export function
• Event logging with timestamp

Structural Features:

• Ultra-slim 1/16 DIN form factor — the smallest in the ALR series
• Color TFT LCD display with high visibility
• Snap-in front bezel with IP65 sealing
• Rear terminal block for all I/O connections

Working Principle:
The recorder samples all 4 input channels every 50 ms. Each sample is converted by a 16-bit A/D converter, scaled to engineering units, and stored in circular buffer memory. The alarm comparator continuously evaluates each channel against user-defined setpoints. When an alarm condition is detected, the relay output changes state. Data is transmitted via RS-422 (multi-drop) or RS-485 (multi-drop/point-to-point) using Modbus RTU or Yokogawa proprietary protocol.

Advantages & Highlights:

• 50 ms scan speed — fastest in the ALR series, ideal for fast transient capture
• 1/16 DIN size — fits in extremely space-constrained panels
• Dual serial ports (RS-422 + RS-485) — maximum communication flexibility
• 24 VDC power — standard industrial DC supply, no AC required

Applicable Industries:

• Semiconductor manufacturing
• Laboratory and R&D
• Compact OEM machinery
• Pharmaceutical batch monitoring
• Environmental monitoring stations

Installation Requirements:

• Cut panel opening to 45 mm × 92 mm for 1/16 DIN mounting
• Use 24 VDC regulated power supply (ripple < 5%)
• For RS-485, terminate the last device with 120 Ω resistor
• For TC inputs, use extension-grade thermocouple wire

Usage Precautions:

• Do not exceed 24 VDC ±10% on the power input
• Do not apply voltage signals directly to mA input terminals (will damage the module)
• Configure the correct input type (TC, RTD, mV, V, mA) for each channel before applying signals
• Perform calibration using precision sources at least annually