- Guided pH calibration following on-screen prompts in HOBOmobile app
- Rugged PVC housing for deployment in both freshwater and saltwater environments
- Quick and easy data offload via Bluetooth Low Energy (BLE) to iOS and Android devices
- Water detection system for longer battery life and less maintenance
- Potentiometric pH electrode with plastic body, gel electrolyte, and double cloth junction
- User-replaceable battery, pH electrode, and anti-biofouling copper guard
- Accuracy of ±0.10 pH units within ±10°C of temperature at calibration
|Range||2.00 to 12.00 pH||-512 to 512 mV|
|Accuracy||±0.10 pH units within ±10°C of temperature at calibration||±0.20 mV|
|Resolution||0.01 pH||0.02 mV|
|Response Time||1 minute typical to 90% at constant temperature in stirred water|
|Sample Ionic Strength||≥ 100 µS/cm|
|Range||-2° to 50°C (28.4° to 122°F)|
|Resolution||0.024°C at 25°C (0.04°F at 77°F)|
|Response Time||7 minutes typical to 90% in stirred water|
|Operating Range||-2° to 50°C (28.4° to 122°F) — non-freezing|
|Buoyancy||Fresh water: 13.6 g (0.48 oz) negative
Salt water: 19.6 g (0.69 oz) negative
|Waterproof||To 40 m (131.2 ft)|
|Water Detection||Water conductivity level of 100 µS/cm or greater is necessary for reliable detection of water. Deionized water or water below 100 µS/cm may not be detected.
The water conductivity circuit may not reliably detect water that has frozen around the electrodes, i.e. below 0°C (32°F).
|Radio Power||1 mW (0 dBm)|
|Transmission Range||Approximately 30.5 m (100 ft) line-of-sight in air|
|Wireless Data Standard||Bluetooth Low Energy (Bluetooth Smart)|
|Logging Rate||1 second to 18 hours|
|Logging Modes||Fixed interval (normal, statistics) or burst|
|Memory Modes||Wrap when full or stop when full|
|Start Modes||Immediate, push button, date & time, or next interval|
|Stop Modes||When memory is full, push button, date & time, or after a set logging period|
|Time Accuracy||±1 minute per month 0° to 50°C (32° to 122°F)|
|Battery Type||One AA 1.5 Volt, user-replaceable|
|Battery Life||1 year typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always On selected in software.
2 years typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Off Water Detect enabled in software.
3 years typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always Off selected in software.
Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life.
|pH Electrode Typical Minimum Life||6 months in sample with ionic strength ≥ 100 µS/cm|
|Memory||152 KB (43,300 measurements, maximum)|
|Full Memory Download Time||Approximately 60 seconds; may take longer the farther the mobile device is from the logger|
|Dimensions||22.86 x 4.27 cm (9.0 x 1.68 inches)|
|Weight||268.2 g (9.46 oz)|
|Wetted Materials||Logger: PVC housing and sensor end cap, polycarbonate closure caps and mounting end cap with a TPE switch
pH electrode: plastic-bodied with Pellon® junctions and gel electrolyte, glass pH sensor bulb
|The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).|