Technical Specifications:

• Front Panel Size: 1/8 DIN (48 mm × 96 mm)
• Number of Input Channels: 4 universal input channels
• Input Types: TC (J, K, T, E, R, S, B, N), RTD (Pt100, Pt1000, Cu50, Cu100), mV, V, mA
• Recording Speed: 200 ms per channel (typical for UM330-02)
• Alarm Outputs: 2 relay alarm outputs (SPDT) (standard for UM330-02)
• Communication: RS-232C, RS-485 (Modbus RTU), Ethernet (on select variants)
• Internal Memory: 8 MB (approx. 4 million data points)
• Power Supply: 24 VDC (±10%) or 100–240 VAC (varies by 02 variant — verify specific configuration)
• Power Consumption: Max 6 VA (AC) / 3 W (DC)
• Operating Temperature: 0°C to +50°C (+32°F to +122°F)
• Protection Rating: IP65 (front panel), IP20 (rear)
• Dimensions (W × H × D): 48 mm × 96 mm × 100 mm
• Weight: Approximately 0.3 kg

Functional Features:

• 4 universal inputs with automatic input type detection (on select models)
• Dual alarm relay outputs with high/low, deviation, and rate-of-change alarm types
• Trend display (real-time and historical) with adjustable time base
• Bar graph display for quick visual process status
• Data export via USB, RS-232C, or RS-485
• Password-protected parameter settings to prevent unauthorized changes
• Scale range engineering per channel (e.g., 0–100°C, 0–10 bar, etc.)

Structural Features:

• 1/8 DIN front panel with color LCD display
• Snap-in bezel with IP65 front seal
• Rear terminal block for all input, output, and power connections
• DIN rail (TS35) mounting clips

Working Principle:
The UM330-02 samples each of the 4 input channels at the configured scan interval (200 ms typical). The analog signal is digitized by a 16-bit A/D converter, converted to engineering units using channel-specific scaling parameters, and stored in the 8 MB internal flash memory. Alarm conditions are evaluated in real-time; when a setpoint is violated, the corresponding relay contact changes state. Data is displayed on the LCD and can be exported via serial communication or USB. The “02” variant configuration determines the specific power supply and communication options.

Advantages & Highlights:

• 4 universal inputs in 1/8 DIN — extremely space-efficient
• 8 MB memory — stores significantly more data than the ALR/UR series
• Dual alarm outputs — independent monitoring of two process variables
• Ethernet option (on select 02 variants) — enables web-based remote access
• Wide input type support — one recorder replaces multiple specialized devices

Applicable Industries:

• HVAC system monitoring
• Compressor and pump monitoring
• Small-scale chemical processing
• Food and beverage batch monitoring
• Environmental monitoring stations

Installation Requirements:

• Cut panel opening to 45 mm × 92 mm for 1/8 DIN mounting
• Provide 24 VDC regulated or 100–240 VAC power (confirm 02 variant specification)
• Use shielded cable for TC/RTD inputs; maintain shield grounding at one end
• For RS-485 communication, install 120 Ω termination resistor at the last device

Usage Precautions:

• Confirm the exact 02 variant specification before wiring — power supply and communication options vary
• Do not apply signals exceeding the maximum input range for each channel type
• For TC inputs, always set the correct thermocouple type in the parameters — mismatch causes large measurement errors
• Perform input calibration using a precision calibration source before putting the recorder into service
• Back up recorded data to external storage (USB/PC) at regular intervals — internal memory is not infinite