Hioki LR5001 Humidity Logger

The LR5001 is a portable environmental data logger that measures temperature and relative humidity using separate sensor channels. It supports simultaneous recording of both parameters and stores up to 60,000 instantaneous readings per channel (or fewer but richer statistical values per interval when using statistical mode). The device is small, lightweight, and ruggedized to IP54 against dust and splashes. It features a dual display so you can see both temperature and humidity at once. The unit can be set to various logging intervals (from every second up to once an hour), and supports both one-time recordings (where logging stops when memory is full) and endless recordings (old data is overwritten). It preserves recorded data even if the battery dies or is replaced briefly, and has built-in backup for data and settings to avoid data loss from errors. Power is supplied by a single AA battery, and battery life can vary from many weeks to a few months depending on recording interval. Typical operating conditions are -20 °C to +70 °C (non-condensing humidity up to about 80 %) for the logger, with sensors capable of wider ambient ranges. It includes optional sensors with different cable lengths, and has infrared optical interface to retrieve data to a PC.

Features

• Two measurement channels: one for temperature, one for humidity, enabling simultaneous readings.
• Large memory: 60,000 instantaneous data sets per channel; statistical mode gives ~15,000 sets per channel.
• Wide measurement ranges: temperature from about −40 °C to +85 °C; humidity from 0 % to 100 % RH.
• Accuracy: temperature around ±0.5 °C in moderate temperature range; humidity around ±5 % RH under typical conditions.
• Flexible logging intervals: selectable from every second up to once every 60 minutes.
• Recording modes: instantaneous values or statistical mode (records max, min, average, instantaneous in each interval).
• Data protection: recorded data preserved even when battery dies; data not lost during battery replacement (if replaced within ~30 seconds).
• Dual display: shows both temperature and humidity readings at once, plus date/time, battery condition etc.
• IP54 rated (dust- and splash-protected for typical environments with sensor connected).
• Compact and portable design: small size and single AA battery operation; optional sensors with various cable or probe lengths; infrared optical communication to transfer data.

Includes

• LR6 (AA) Alkaline battery (built-in internal) × 1
• Humidity Sensor LR9504 × 1
• Instruction manual × 1
• Operation guide × 1
• Kickstand × 1