T&D TR-73U Temperature/Humidity/Pressure Data Logger | 3 channels, 0–50 ℃, 10–95% RH, 750–1100 hPa, 8000 readings, USB

T&D TR-73U Temperature/Humidity/Pressure Data Logger

Overview

The TR-73U is a 3-channel data logger from T&D of Japan. It measures temperature and humidity with the supplied external temperature/humidity sensor TR-3100 and barometric pressure with a built-in sensor. It stores 8000 readings (each reading covers all 3 channels), with a choice of endless (overwrite) or one-time (stop when full) recording mode. It connects to a PC via USB; T&D Recorder for Windows is used for settings and data download and T&D Graph for charts. The software and USB driver must be installed before connecting. An optional sensor extends the temperature range to -40 to 110 ℃.

Key Specifications

• Measurement range: Temperature 0–50 ℃ (supplied sensor; optional sensor -40 to 110 ℃); humidity 10–95% RH; pressure 750–1100 hPa
• Accuracy: Temperature avg. ±0.3 ℃ (0–50 ℃); humidity ±5% RH (25 ℃, 50% RH); pressure ±1.5 hPa
• Resolution: 0.1 ℃; 1% RH; 0.1 hPa
• Capacity and interval: 8000 readings; 15 intervals: 1, 2, 5, 10, 15, 20, 30 seconds and 1, 2, 5, 10, 15, 20, 30, 60 minutes
• Interface: USB 2.0 Mini-B; serial communication with optional TR-07C cable
• Power: 1 × AA alkaline battery, approx. 10 months (depends on ambient temperature, recording interval and communication frequency; not guaranteed)
• Dimensions, weight and environment: H55 × W78 × D18 mm; approx. 40 g; operating environment -10 to 60 ℃, 90% RH or less, non-condensing

Applications

• Temperature, humidity and pressure recording in laboratories, warehouses and cleanrooms.
• Long-term monitoring of transport and storage environments.

Specifications per the T&D TR-73U Features and Specs (2022-12) and instruction manual (9th edition, 2020-08) (tandd.com, retrieved 2026-10-24).