mht51 temperature and humidity data logger
Field Logistics & Cold-Chain Application: The MarMonix MHT-51 allows receiving dock inspectors to instantly verify critical temperature excursions on-site via its integrated LCD screen—checking real-time MAX, MIN, and Average (AVG) readings before accepting temperature-sensitive biologics, blood plasma, or specialty chemicals, without even waiting to plug the device into a PC.
MarMonix MHT-51 temperature and humidity data logger Overview
The MarMonix MHT-51 is a premium single-use USB temperature and relative humidity data logger designed for high-integrity environmental monitoring during transit, warehousing, and regulated laboratory workflows. Combining laboratory-grade sensor accuracy with ultimate field usability, the MHT-51 features a high-clarity built-in LCD display alongside an IP66 water- and dust-resistant housing.
Unlike blind loggers, the MHT-51 provides immediate visual confirmation of active recording status, live temperature/humidity values (with 0.1°C / 1% RH resolution), and threshold alarm violations right on the container. Once transit is complete, simply insert the integrated USB connector into any computer to automatically generate secure, tamper-evident PDF and CSV audit reports—with no software installation required.
Key Features & Advantages
- High-Clarity Built-In LCD Screen: Instantly displays live temperature & RH, configurable alarm limits, active logging states, and calculated MAX / MIN / AVG operational statistics.
- Direct USB Auto-Reporting: Automatically compiles and exports standardized PDF and CSV data logs directly upon PC connection—completely driver-free.
- Wide Dynamic Range & Precision: Operating range from -30 °C to +70 °C (-22 °F to +158 °F) with ±0.5 °C accuracy (-20 °C to +40 °C) and 0% to 100% RH with ±3% RH accuracy.
- Triple LED & Screen Visual Diagnostics:
- Blue LED: Indicates start-delay countdown (default 30 min delay for cargo temperature stabilization).
- Green LED: Confirms active recording within preset safe thresholds (default: 2°C to 8°C & 20–80% RH).
- Red LED & Screen Icon: Immediately signals high/low excursion alarm conditions.
- Rugged & Compact (IP66): Encased in an ultra-slim 7.5 mm body (16 g) engineered to withstand harsh condensation and washdowns in refrigerated containers and insulated thermal shippers.
Technical Specifications
| Parameter | Specification Details |
|---|---|
| Model & Part Number | MHT-51 | P/N: 7603594 |
| Display | Built-in LCD (Resolution: 0.1 °C/°F, 1% RH) with MAX/MIN/AVG readouts |
| Temperature Range & Accuracy | -30 °C to +70 °C (-22 °F to +158 °F) ±0.5 °C (-20 °C to +40 °C); ±1.0 °C (other ranges) |
| Humidity Range & Accuracy | 0% to 100% RH ±3% RH (@ 25 °C, 20%–80% RH); ±5% RH (other ranges) |
| Log Duration & Interval | 90 days default (Customizable: 7 to 360 days) | Interval: 5 min default (1 min to 24 h) |
| Alarm Settings | Default <2 °C or >8 °C; 20% to 80% RH (Customizable) with LED & LCD visual alerts |
| Protection Class | IP66 Waterproof & Dust-tight Ingress Rating |
| Battery & Form Factor | Internal CR2032 | 83.5 × 27.7 × 7.5 mm | Weight: 16 g |
| Data Export | Direct USB Auto-Generated PDF Report & CSV Data Export |


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