UN 1845 · IATA compliant
Temperature and Humidity Datalogger
A compact recorder that measures temperature and humidity, stores the readings in memory and produces PDF reports through free PC software.
- Temperature
- −30 … 70 °C
- Humidity
- 0 … 100 %RH
- Memory
- 40,020 readings
- Battery life
- 1 year
The product name is pre-filled in the quote form. We usually reply the same day.
Product overview
The DT-191A is used to read and record temperature and humidity values. Its memory logs the readings for the period you configure, and afterwards you can produce a report with the free PC software.
In cold chain audits, pharmaceutical and food shipments, warehouses and laboratories the recorded data counts as documentation. The device raises an alarm when the configured thresholds are exceeded and shows minimum and maximum values on its LCD screen.
Where it is used
Cold chain shipments
Placed inside the box; the temperature history is reported on delivery.
Pharma and biomedical
Mandatory recording for vaccine, sample and blood transport.
Warehouse and cold rooms
Long-term temperature and humidity monitoring at fixed points.
Audit and quality
PDF reports for customers and inspection bodies.
Advantages
- PDF reporting
- PC software compatible with Windows XP / Vista / 7 / 8 / 10
- Minimum and maximum values shown on the LCD screen
- Alarm function
- Dimensions: 75 mm × 35 mm × 16 mm
- Weight: 50 g
Technical specifications
| Temperature range | −30 to 70 ℃ / −22 to 140 ℉ |
|---|---|
| Temperature accuracy (best) | ±0.5 ℃ / 0.9 ℉ |
| Temperature resolution | 0.1 ℃ / 0.1 ℉ |
| Humidity range | 0 to 100 %RH |
| Humidity accuracy (best) | ±3 %RH |
| Humidity resolution | 0.1 %RH |
| Memory | 40,020 readings (20,010 per channel) |
| Sampling interval | 1 min – 24 h |
| Battery life | 1 year (at 1 min sampling) |
| Reporting | PDF reports |
| Software | Windows XP / Vista / 7 / 8 / 10 |
| Display | LCD — min. and max. value readout |
| Alarm | Yes |
| Dimensions | 75 mm × 35 mm × 16 mm |
| Weight | 50 g |
Accessories
- USB data cable
- Free PC reporting software
- Wall / shelf mounting bracket
What does the recorded data look like?
Once the readings stored in the device are transferred to the free PC software, you get a graph and a report like the one below.
Shipment record — Istanbul → Ankara
DT-191A · 60 min sampling · 25 readings
Min. temperature
-23.0 °C
Max. temperature
-18.3 °C
Average
-20.8 °C
Average humidity
58 %RH
| Time | Temperature | Humidity | Status |
|---|---|---|---|
| 08:00 | -20.9 °C | 66.0 %RH | Normal |
| 14:00 | -20.8 °C | 57.0 %RH | Normal |
| 20:00 | -21.8 °C | 54.1 %RH | Normal |
| 02:00 | -21.5 °C | 60.1 %RH | Normal |
| 08:00 | -18.3 °C | 52.3 %RH | Normal |
Demonstration panel — the on-screen equivalent of the PDF report the device produces.
PDF reportSafety notes
- Do not let the device touch dry ice directly; surfaces below the −30 °C measuring limit cause faulty readings and battery loss.
- Set the sampling interval and alarm thresholds in the PC software before logging, otherwise the device records with factory values.
Delivery & packaging
- Delivered with a USB cable and a link to the free software
- Can be ordered together with EPS boxes and dry ice for your shipments
Comparison
Cold Chain & Thermal Packaging — models side by side
| Package | Protection | Contents | Suitable lane |
|---|---|---|---|
| Shipper + dry ice | 24–48 hours | EPS/carton shipper, pellet load | Domestic and short-haul export |
| Thermal blanket + dry ice | 48–96 hours | Multi-layer blanket, block + pellet hybrid | Europe and Middle East lanes |
| Thermal blanket Pro | 96–120+ hours | Double blanket, optimised ice load, datalogger | Intercontinental air cargo |
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