The Testo 174H Mini Data Logger delivers dependable climate tracking, high-accuracy temperature and relative humidity recording, and tamper-proof historical data logging engineered specifically for pharmaceutical warehouses, cleanrooms, food storage facilities, and archival preservation environments.

Precision Climate Supervision with the Testo 174H Mini Data Logger

Engineered for continuous indoor environmental auditing, the Testo 174H Mini Data Logger combines a high-precision internal NTC temperature sensor with a long-term stable capacitive humidity sensor. Its ultra-compact form factor allows technicians to position the logger directly inside display cases, climate-controlled storage vaults, pharmaceutical refrigerators, and localized HVAC testing areas without disrupting workflow or aesthetic fixtures.

The instrument features a massive 16,000-reading non-volatile memory archive that safeguards collected data points even during complete battery exhaustion. Operators can configure custom sampling intervals ranging from 1 minute up to 24 hours using free Testo ComSoft software. When plugged into a host workstation via the optional USB desktop interface cradle, the software facilitates fast data extraction, trend analysis, audit trail archiving, and regulatory compliance reporting.

A high-contrast front LCD display provides immediate local visibility into real-time ambient values, logged minimum and maximum temperature peaks, and battery capacity status. Programmable upper and lower threshold limit alarms immediately trigger an optical warning symbol on the display screen to alert staff of environmental excursions.

Key Features and Engineering Advantages

• Capacitive Polymer Humidity Sensor: Patented sensor technology ensures long-term calibration stability and resistance to sensor condensation drift.
• Substantial 16,000-Point Memory: Large internal non-volatile memory safely retains extensive multi-month environmental records without cyclical data loss.
• Clear Multi-Function LCD: Offers instant on-site inspection of current ambient values, active logging status, and limit excursion alarms.
• Programmable Alarm Limits: Front visual indicator flags out-of-spec thermal and relative humidity occurrences for instant quality intervention.
• Standard CR2032 Power Source: Powered by dual user-replaceable coin cells delivering up to 365 days of continuous operation at 15-minute sampling rates.

Technical Specifications

Industrial Applications and Process Integration

The Testo 174H Mini Data Logger is widely specified across regulated environmental monitoring applications, including:

• Pharmaceutical storage facilities, medicine dispensary refrigerators, and active stability chambers.
• Commercial food distribution warehouses, grocery retail display chillers, and bakery proofing areas.
• Museum exhibit showcases, historical document archives, and fine art conservation repositories.
• Building ventilation commissioning, facility IAQ verification, and indoor comfort monitoring loops.

Frequently Asked Questions

How is data transferred from the Testo 174H Mini Data Logger to a computer?
Data extraction requires the Testo USB interface docking cradle. The logger snaps directly into the cradle, allowing Testo ComSoft software to download the recorded data points, compile graphical curves, and export spreadsheet files.

Are stored measurements lost when the batteries run out?
No. The Testo 174H Mini Data Logger utilizes non-volatile flash memory to retain all measurement data and programming configurations. Even when the CR2032 batteries are fully depleted, historical records remain completely intact.

Can the logger be mounted securely against unauthorized removal?
Yes. The unit comes equipped with a dedicated wall bracket that can be permanently screwed to building partition walls or display casings, allowing the logger to be secured in place.