Rotronic BL-1D Ambient Pressure and Dew Point Humidity Data Logger
Rotronic BL-1D Ambient Pressure, Humidity & Temperature Data Logger
Compact IP67 logger that measures ambient pressure, humidity, temperature & dew point, with 32,000-point memory, LCD display, USB interface, and long battery life.
The Rotronic BL-1D is a multi-parameter data logger designed to record barometric pressure, humidity, temperature, and dew point with high reliability. It features ±3 mbar pressure accuracy, ±2% RH humidity accuracy, ±0.3°C temperature accuracy, and stores up to 32,000 data records. Its robust IP67 design and USB interface make it ideal for warehousing, environmental monitoring, labs, and logistics.
Key Features
Measures Ambient Pressure, RH, Temperature, Dew Point
Pressure accuracy: ±3 mbar @ 23°C
Humidity accuracy: ±2% RH @ 23°C (10–90% RH)
Temperature accuracy: ±0.3°C @ –20…70°C
Large memory: 32,000 data lines
Logging interval: 30 sec to 24 h
IP67 (dust & water protection)
USB-Mini interface (no proprietary cable required)
LCD display with real-time readings
LED indicators for alarms/logging
Powered by 1 × CR2 battery (up to 1 year)
FDA 21 CFR Part 11 / GAMP 5 compliant HW4 software
Technical Specifications
| Parameter | Specification |
|---|---|
| Pressure Range | 300…1100 mbar |
| Pressure Accuracy | ±3 mbar @ 23°C |
| RH Range | 0…100% RH |
| RH Accuracy | ±2% RH |
| Temperature Range | –30…70°C |
| Temperature Accuracy | ±0.3°C |
| Dew Point | Calculated |
| Memory | 32,000 data points |
| Logging Interval | 30 sec – 24 h |
| Protection Class | IP67 |
| Display | LCD, 2-line |
| Battery | CR2 lithium |
| Connectivity | USB-Mini |
| Dimensions | 90 × 60 × 23 mm |
| Weight | ~85 g |
Applications
Ambient pressure & climate monitoring
Warehousing, cold rooms, and transport
Meteorological and environmental logging
Labs, cleanrooms, and controlled storage
HVAC audits & facility documentation
What’s in the Box
Rotronic BL-1D data logger
CR2 battery
Calibration certificate
Quick instruction sheet
FAQ
Q: Does BL-1D calculate dew point?
Yes—dew point is calculated from RH & temperature.
Q: Can it record pressure and humidity at the same time?
Yes—all four parameters (P, RH, T, DP) are logged simultaneously.
Q: Is the software free?
Yes—HW4-Lite is included for setup, download & reporting.
Q: What is the battery life?
Up to 1 year at a 1-hour logging interval.