pH Data Loggers and Recorders
pH data loggers measure and record pH levels over time, providing a permanent data record for water quality monitoring, environmental research, aquaculture management, and laboratory experiments. pH is a fundamental indicator of water chemistry — influencing the health of aquatic ecosystems, the effectiveness of industrial processes, and the safety of food and beverage production. Continuous logging captures fluctuations that spot measurements alone would miss, giving researchers and facility managers a complete picture of how pH changes over time in response to temperature, biological activity, or chemical inputs.
Handheld pH data loggers are ideal for spot testing, field surveys, and short-term experiments where portability and quick results are the priority. For longer-term deployments in lakes, rivers, estuaries, streams, and ocean environments, submersible loggers with rugged waterproof housings and extended battery life provide continuous unattended monitoring with Bluetooth data offload. Many models also record temperature simultaneously, which is important since pH readings are temperature-dependent.
MicroDAQ carries pH data loggers from HOBO and Reed Instruments, covering both handheld SD card logging meters and Bluetooth-enabled submersible loggers for freshwater and saltwater applications. Our non-commissioned Technical Sales Representatives are available by chat, email, or phone and are always happy to help you find the best solution for your application.
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R3000SD- Measures and Records pH (ORP Values), mV and Temperature Using External Sensors (Sold Separately)
- Selectable Measurement Range of 0 to 14pH or 1 to 13pH
- Recorded Data Logs to SD Card with Easy Analysis Using Microsoft® Excel®
- LCD Display Shows Current Readings, Max and Min Readings and Battery Status
- 1 Second to 1 Hour User-Selectable Sampling Rate
- Powered by User-Replaceable Batteries with Optional AC/DC Powered Adapter (#RSD-ADP-NA)
Requires pH Electrode with BNC Connector and pH Buffer Solution
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MX2501- Long-Term pH and Temperature Measurements in Estuaries, Lakes, Streams, Rivers and Oceans (Salt and Freshwater Environments)
- 2.0 to 12.0 pH and 2C to 50C Measurement Ranges and +/-0.10pH and +/-0.2C Accuracy
- User-Replaceable Lithium Battery with 1 Year Typical Life (1 Minute Sampling Rate and Bluetooth Always On)
- Stores up to 43,300 Measured Readings with Date/Time Stamp if Bluetooth Communications Not Available
- Wireless Transmission of Recorded Readings to Phone or Tablet Using Bluetooth or Li-Cor Cloud with MX Data Plan (Sold Separately)
Includes pH Electrode and Lithium Battery. HOBOconnect App Available on the Apple Store (iOS) and Google Play (Android)
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R3000SD-KIT- Measures and Records pH (ORP Values), mV and Temperature Using External Sensors (Included)
- Selectable Measurement Range of 0 to 14pH
- Recorded Data Logs to SD Card with Easy Analysis Using Microsoft Excel
- LCD Display Shows Current Readings, Max and Min Readings and Battery Status
- 1 Second to 1 Hour User-Selectable Sampling Rate
- Powered by User-Replaceable Batteries with Optional AC/DC Powered Adapter (RSD-ADP-NA)
Kit Includes R3000SD pH/ORP Meter, R3000SD-PH2 General Purpose pH Electrode, R3000SD-ORP Professional ORP Electrode, Soft Carrying Case and (6) AA Batteries
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R3000SD-KIT2- Measures and Records pH (ORP Values), mV and Temperature Using External Sensors (Included)
- Selectable Measurement Range of 0 to 14pH
- Recorded Data Logs to SD Card with Easy Analysis Using Microsoft Excel
- LCD Display Shows Current Readings, Max and Min Readings and Battery Status
- 1 Second to 1 Hour User-Selectable Sampling Rate
- Powered by User-Replaceable Batteries with Optional AC/DC Powered Adapter (RSD-ADP-NA)
Kit Includes R3000SD pH/ORP Meter, R3000SD-PH2 General Purpose pH Electrode, R3000SD-ORP Professional ORP Electrode, R1404 Buffer Solution and R1407 Buffer Solution
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R3000SD-KIT3- Measures and Records pH (ORP Values), mV and Temperature Using External Sensors (Included)
- Selectable Measurement Range of 0 to 14pH
- Recorded Data Logs to SD Card with Easy Analysis Using Microsoft Excel
- LCD Display Shows Current Readings, Max and Min Readings and Battery Status
- 1 Second to 1 Hour User-Selectable Sampling Rate
- Powered by User-Replaceable Batteries with Optional AC/DC Powered Adapter (RSD-ADP-NA)
Kit Includes R3000SD pH/ORP Meter, R3000SD-PH2 General Purpose pH Electrode, R3000SD-ORP Professional ORP Electrode, ATC Temperature Probe, 16GB SD Card, and Power Adapter
