Technical Specifications:

• Number of Channels: 1 recording channel (001 = 1 ch)
• Input Types: DC voltage (0–5 V, 1–5 V), DC current (4–20 mA, 0–20 mA), mV, TC, RTD (via external transmitter)
• Power Supply: 100–240 V AC (50/60 Hz) — indicated by “110”
• Display: 8-digit, 7-segment LED display (red or green selectable)
• Recording Interval: 0.1 second to 60 minutes (selectable)
• Data Storage: Non-volatile flash memory (up to 100 days at 1-second interval)
• Accuracy: ±0.1% of full scale (FS)
• Alarm Outputs: 4 alarm outputs (2 SP, 2 alarm)
• Communication: RS-232C (standard), RS-485 (option), Ethernet (option)
• Control Output: None (recorder only — no control output)
• Operating Temperature: 0 to 50 °C (32 to 122 °F)
• Panel Cutout: 48 × 96 mm (1/8 DIN × 2)
• Depth: 90 mm (3.54 in)
• Weight: Approximately 300 g (0.66 lb)
• Protection Rating: IP20 (front panel), IP10 (rear)

Functional Features:

• Paperless Recording: Digital flash memory eliminates chart paper and ink
• Trend Display: Real-time trend graph on front panel (scrolling or freeze)
• Bar Graph Display: Visual indication of process variable relative to alarm setpoints
• Event Recording: Timestamped event log with operator comments
• Alarm Management: 4 configurable alarm outputs with hysteresis
• Data Transfer: USB flash drive or RS-232C for data download to PC
• Scaling: Programmable engineering unit scaling (linear, square root, custom)
• Password Protection: Restricts unauthorized parameter changes

Performance Parameters:

• Sampling Rate: 10 times per second (all channels)
• Input Impedance (Voltage): 1 MΩ minimum
• Input Impedance (Current): 250 Ω
• Alarm Contact Rating: 1 A at 30 V DC (SPDT)
• Insulation Resistance: 100 MΩ minimum at 500 V DC
• Dielectric Strength: 1500 V AC for 1 minute (input to output to power)
• Data Retention: 10 years (non-volatile flash memory, no battery required)
• EMC Compliance: EN 61326-1

Structural Features:

• Ultra-compact 1/8 DIN format (48 × 96 mm)
• Snap-in mounting with friction fit
• Rear-mounted screw terminal block (3 rows)
• Transparent front cover with LED display and indicator LEDs
• Low-profile design (90 mm depth) for shallow panels
• USB port on front panel for data transfer

Working Principle:
The UP35A samples the input signal at 10 Hz via a 16-bit A/D converter. The digitized value is stored in non-volatile flash memory with a timestamp. The microprocessor drives the 8-digit LED display and updates the bar graph and trend display in real time. When an alarm condition is detected (PV exceeds setpoint), the corresponding alarm output relay activates. Data is retrieved via RS-232C using Yokogawa’s UR Link software or exported via USB flash drive.

Advantage Highlights:

• Ultra-Compact 1/8 DIN: Fits in half the space of a full DIN recorder
• 100 Days Data Storage: Non-volatile memory retains data without battery backup
• No Consumables: Eliminates chart paper, ink, and pen replacement costs
• USB Data Export: Simple data transfer to PC for analysis and reporting
• 4 Alarm Outputs: Comprehensive alarm management in a tiny package
• Low Cost of Ownership: No paper, ink, or mechanical maintenance required

Applicable Industries:

• Water and wastewater treatment plants
• Food and beverage production
• Pharmaceutical manufacturing
• HVAC system monitoring
• Building automation
• Laboratory data logging
• Environmental monitoring stations

Installation Requirements:

• Panel cutout: 44 × 92 mm minimum, 48 × 96 mm nominal
• Mounting depth clearance: 90 mm from front of panel
• Use 22–14 AWG wire for terminal connections
• Ensure ambient temperature does not exceed 50 °C
• Provide 50 mm minimum clearance behind panel for ventilation
• Connect RS-232C cable to PC for initial configuration (UR Link software)

Usage Precautions:

• Set recording interval appropriately to balance data resolution and storage duration
• Back up data to USB drive before the 100-day storage limit is reached
• Use shielded cables for mV and thermocouple inputs
• Do not expose the recorder to temperatures above 50 °C
• Verify input range scaling matches actual process signal before recording
• Protect the USB port cover when not in use to prevent dust ingress