COVID-19 Update: Alpha Controls & Instrumentation is here to help and support your business in anyway possible during these uncertain times. Please click here to read more.


BL-1D Barometric Pressure, RH/T, & Dew Point Data Logger

Compact, dependable and inexpensive barometric pressure, humidity temperature and dew point data logger

Starting At
$300.00 CAD
Normally ships in 1-2 Weeks

Configure   Request Quote

Can We Help You?


Our product experts are here to help you find the right solution for your application!

Barometric pressure, humidity temperature and dew point data logger. Compact, dependable and inexpensive.

• High measurement accuracy of ±3.0 %RH, ±0.3 °C, ±3 hPa
• Compact with high level of IP protection
• High storage capacity: 32,000 lines
• Programmable start and stop times via HW4 software
• Free evaluation and configuration software HW4-lite
• FDA 21 CFR Part 11 / GAMP 5-compliant HW4 software
• EN 12830 certified (V3.0 devices)

Range of Application -30…70 °C / 0…100 %RH / 300...1100 hPa
Accuracy at 23 ±5 °C ±3.0 %RH / ±0.3 °C / ±3 hPa
Power Supply / Power Consumption 1x CR2 battery
Battery Life 3 years (at a logging interval of 1 h)
Temperature Sensor NTC
Pressure Sensor Bosch BMP280
Measurement Interval 30 s…24 h
Display Type LCD, 2 lines
Display Refresh Rate 5 sec. (Standard)
(when logging same refresh rate as log interval)
LED Indicator 2 LEDs
Right LED flashes green during data logging
Left LED flashes red when alarm limits breached or low battery
Battery Indicator Yes
HW4 Compatible V3.9 and higher
Storage Capacity 32,000 lines
Communication Interfaces Mini USB
IP Protection Rating IP67
FDA/GAMP Compatibility FDA 21 CFR Part 11 / GAMP 5 conform software HW4
Standards EN 12830
Dimensions 90 x 60 x 23 mm
Weight 85 g