T&D TR‑76Ui‑S USB CO2, Temperature & Humidity Logger

USB CO2 data logger designed for accurate CO₂, temperature and humidity monitoring with a high precision sensor.

The TR‑76Ui‑S is a three‑channel logger measuring CO₂ concentration alongside high precision temperature and humidity. Simple USB connection enables quick setup, data download and live monitoring via Windows software, while a CO₂ warning function supports timely ventilation control in classrooms and buildings.

Specifications

• Model: TR‑76Ui‑S (TR‑7Ui Series)
• Measurement channels: CO₂ concentration (1ch), temperature (1ch), humidity (1ch)
• CO₂ sensor: Internal NDIR
• CO₂ range: 0 to 9,999 ppm
• CO₂ accuracy: ±(50 ppm + 5% of reading) at 5,000 ppm or less
• CO₂ resolution: Minimum 1 ppm
• CO₂ response time (90%): Approx. 1 min
• Temperature sensor: SHA‑3151 high‑precision type (thermistor)
• Humidity sensor: Polymer resistance
• Temperature range: −25 to 70 °C
• Humidity range: 0 to 99 %RH (from −20 °C)
• Temperature accuracy: ±0.3 °C (10 to 40 °C), ±0.5 °C (other temperatures)
• Humidity accuracy: ±2.5 %RH (15 to 35 °C, 30 to 80 %RH)
• Resolution: 0.1 °C, 0.1 %RH
• Temp/RH response time (90%): Approx. 7 min
• Logging capacity: 8,000 data sets (all channels per set)
• Recording intervals: 15 options from 1 sec to 60 min
• Recording modes: Endless or one‑time
• Display: LCD showing CO₂, temperature or humidity (fixed/alternating), recording status, mode, battery level
• Communication interfaces: USB 2.0 (Mini‑B), serial
• External alarm terminal: Open drain output (OFF voltage <30 V DC; ON current <0.1 A; ON resistance ~15 Ω)
• Power: AC adaptor (AD‑06A1 or AD‑06C1) or 4 × AA alkaline batteries
• Battery life: Approx. 2 days on batteries only (without AC adaptor)
• Operating environment: 0 to 45 °C; ≤90 %RH (no condensation)
• Dimensions: H 96 × W 66 × D 46 mm (excluding protrusions and sensor)
• Weight: Approx. 120 g
• Included items: 4 × AA alkaline batteries, AC adaptor (AD‑06A1 or AD‑06C1), USB Mini‑B cable (US‑15C), temperature‑humidity sensor THA‑3001 or SHA‑3151, manual set
• Software: CO2 Recorder for Windows; T&D Graph for viewing and analysis
• Additional function: Atmospheric pressure correction for improved CO₂ measurement reliability

Common Applications

• Classroom and building ventilation timing using CO₂ warnings
• Indoor air quality monitoring with strict temperature and humidity control
• Facilities and environmental data logging with PC‑based analysis
• On‑site notification via external alarms (with compatible devices)

The TR‑76Ui‑S data logger combines USB CO2 data logger capability with a high precision temperature and humidity logger for reliable IAQ monitoring.

For sales and support of the TR‑76Ui‑S, USB CO2 data logger, high precision temperature and humidity logger, and TR‑76Ui‑S data logger, contact CMC Technologies on ph 02 9669 4000 or email sales@cmctechnologies.com.au.