HR Series — Portable Electronic Temperature Logger
Portable Memory Type — Ditch the Paper and Pen
The HR series portable electronic temperature logger enhances the standard electronic thermometer with memory, USB communication, data browsing, and other practical features — no more manual note-taking. After collecting data at each measurement point, simply transfer it to a computer via USB back in the office. Chinese-language prompts for operation. Memory can store data for thousands of measurement points.
Key Features
- Built-in memory function — no manual note-taking needed
- USB communication for data transfer to computer
- Data browsing function (supports positioning and page navigation)
- Chinese-language prompts for operation
- Automatic memory position management
- Measurement range: -20°C to 130°C
- Free companion PC software for auto-summarization, tabulation, and graphing

FAQ
What scenarios is the HR portable recorder suitable for?
The HR portable recorder is ideal for temporary, small-scale monitoring: ① Small concrete element temperature monitoring; ② Curing room temperature monitoring; ③ Transport process temperature recording; ④ Laboratory temperature recording. Compact and easy to operate.
How long can the HR recorder log data?
The HR recorder is portable, high-capacity, and high-precision. It uses the same precision measurement and clock chips as the TG series, with built-in large-capacity storage that can record approximately 6,500 data sets. Data can be exported to PC via USB, with timestamp and point ID support.
What is the HR recorder battery life?
The HR recorder uses dry batteries, lasting approximately 60 days at 10-minute intervals. Low battery is indicated by a flashing panel LED. External USB power for long-term fixed use is also supported.
How do I export data from the HR recorder?
Connect to a PC via USB and use the included software to read and export data in Excel format. The software is free and supports Windows. Exported data includes timestamps, temperature values, and channel numbers, and can generate temperature curve charts.
How many monitoring channels does the HR recorder support?
The HR recorder features a single-channel design with sequential point polling. Although it has only one physical input interface, it supports quick on-site switching between measurement points — simply unplug from the current point and plug into the next for time-division multiplexing. We recommend flexible configuration based on the total number of measurement points in your project to cover all monitoring needs at minimal cost.
What is the measurement range and accuracy of the HR recorder?
The HR recorder measures from -55°C to +153°C using digital temperature sensors with ±0.5°C accuracy, meeting mass concrete monitoring standards. The sensor leads are heat-resistant (up to 120°C) and can be embedded in concrete for internal use.
Does the HR recorder support real-time monitoring?
The HR recorder itself does not have network capability and cannot do remote real-time monitoring. However, the panel has an LCD display showing current temperatures for all channels. For remote monitoring, consider the TG Cloud series, MG Cloud series, or RF wireless system.
Does the HR recorder need calibration?
The HR recorder uses digital temperature sensors that are factory-calibrated. No periodic calibration is needed under normal use. Sensor accuracy remains stable throughout the service life. For special accuracy requirements, you can arrange third-party calibration and obtain their calibration certificate.
What is the size and weight of the HR recorder?
The HR recorder is approximately 120×80×30mm, weighing about 150g (without batteries) — very portable. Fits in a pocket or tool bag. IP54-rated enclosure protects against splashing water.
What is the difference between the HR recorder and TG host?
Key differences: ① HR has no network capability (offline logging); TG supports real-time cloud upload. ② HR is battery-powered and portable; TG is for fixed, long-term deployment. ③ HR data requires USB export; TG data is accessible via cloud. HR for small/temporary projects, TG for large/long-term projects.
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