YOKOGAWA DX1004-3-4-2/M1/R1/S2

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YOKOGAWA DX1004-3-4-2/M1/R1/S2

Product Introduction:
The DX1004 is a 4-channel universal input paperless recorder from Yokogawa’s DX1000 series. The suffix code /M1/R1/S2 denotes specific configuration: M1 = Modbus RTU slave communication / R1 = 1 relay alarm output / S2 = 2nd alarm configuration variant. This recorder replaces traditional chart recorders with digital recording, data logging, and remote monitoring capabilities. It accepts thermocouple, RTD, voltage, current, and frequency inputs.

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Technical Specifications:

Number of Input Channels: 4 channels (universal input)
Input Types: TC (J, K, T, E, B, R, S, L, N, W), RTD (Pt100, JPt100, Cu50), DC Voltage (0–5V, 1–5V, 0–10V), DC Current (4–20mA, 0–20mA), Frequency (1Hz–10kHz)
Recording Speed: 0.2 sec to 60 sec per scan (selectable)
Display: 65,536 color TFT LCD, 1/4 VGA (320 × 240 pixels)
Alarm Outputs: 3 alarm outputs (configurable as HIGH/LOW/DEV/RATE)
Event Inputs: 4 event inputs (digital event recording)
Transmitter Outputs: 2 channels, 4–20mA output (isolated)
Communication: Modbus RTU (RS-485) — M1 designation / Also supports RS-232C
Power Supply: 100–240 VAC, 50/60 Hz (universal input)
Power Consumption: Maximum 15 VA
Recording Memory: NAND flash memory, approximately 30 days at 0.2 sec scan (4 channels)
Operating Temperature: 0 to +50 °C (32 to 122 °F)
Front Panel Protection: IP65 / NEMA4 (front panel only)
Dimensions: 96 mm (W) × 96 mm (H) × 130 mm (D) (DIN cutout: 92 × 92 mm)
Weight: Approximately 0.6 kg

Functional Features:

Universal input — automatically detects TC, RTD, mA, V, and frequency inputs
3 independent alarm outputs with configurable setpoints (HIGH, LOW, DEVIATION, RATE)
4 digital event inputs for ON/OFF event timestamp recording
2 isolated 4–20mA transmitter outputs for analog signal retransmission
Modbus RTU slave (M1) — enables SCADA/DCS integration
Data logging to USB memory (USB flash drive on front panel)
SD card slot for extended data storage (up to 32 GB)
Bar graph display, trend display, and numeric display modes
Password protection with 3-level access control

Performance Parameters:

Input Accuracy (TC): ±0.1% of reading ±1 digit (K-type at 0°C–1000°C)
Input Accuracy (RTD): ±0.12% of reading ±1 digit (Pt100, 0°C–400°C)
Input Accuracy (mA): ±0.1% of span ±1 digit
Display Update Rate: 1 second (typical)
Alarm Response Time: ≤ 100 ms (from setpoint violation to alarm activation)

Applicable Industries:

Oil & Gas — Wellhead monitoring, pipeline temperature/pressure recording
Chemical & Petrochemical — Reactor temperature logging, safety alarm recording
Pharmaceutical — GMP-compliant process data recording
Food & Beverage — HACCP temperature monitoring and logging
Power & Utilities — Generator and transformer monitoring

Installation Requirements:

DIN rail mounting (35 mm standard rail)
Panel cutout: 92 mm × 92 mm
Ensure proper grounding of the recorder chassis
Shielded twisted-pair cables recommended for TC/RTD inputs
Maximum cable run for TC: 100 m (use compensated cable)
Maximum cable run for mA: 300 m (loop resistance ≤ 600 Ω)

Precautions:

Do not apply voltage exceeding 30 VDC between any input terminals
Do not exceed 250 VAC between input terminals and chassis ground
Use isolated power supply when connecting to systems with high ground potential difference
Calibrate input channels annually per Yokogawa recommended procedure
Replace backup battery (CR2032) every 2 years to maintain clock and memory retention