Description
Product Code: MX2501
Designed for long-term monitoring in estuaries, lakes, streams, rivers, and oceans, this logger measures pH and water temperature. Bluetooth Low Energy (BLE) connectivity allows the logger to communicate wirelessly with iOS devices through the free HOBOmobile App. Use the app for easy logger setup, step-by-step calibration, and fast data offload. The logger’s 152 KB memory stores up to 43,300 measurements. Equipped with a rugged PVC housing, the logger is waterproof to 40 meters (131.2 feet) and can be deployed in freshwater or saltwater environments. The pH electrode features Pellon junctions, gel electrolyte, and a glass sensor bulb..
–pH Range:2.00 to 12.00
–Temperature Range:-2C to 50C (28.4F to 122F).
–Accuracy pH:, 0.10 pH units within 10C of temperature at calibration;
–Accuracy Temperature:0.2C (0.36F).
–Resolution pH:0.01;
–Resolution Temperature:0.024C at 25C (0.04F at 77F).
–Response Time pH:1 minute typical to 90% at constant temperature in stirred water;
–Response Time Temperature:, 7 minutes typical to 90% in stirred water.
–Operating Range:-2C to 50C (28.4F to 122F), non-freezing.
–Transmission Range:Approximately 30.5 m (100 feet) line-of-sight in air.
–Logging Rate:1 second to 18 hours.
–Battery Type:One AA 1.5V.
–Environmental Rating:IP68.
–Dimensions:9″ x 1.68″.
–Weight:9.46 oz.
The HOBO MX2501 data logger requires theHOBOmobile Appand a compatible mobile device.The system requirements for the HOBOmobile app can be found at the bottom of theHOBOmobile software page.




