Portable DO pH Temperature Sensors O2 Meter Dissolved Oxygen pH Analyzer,
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① Multi-functional Design:
Compatible with a wide range of Luminsens digital sensors, enabling measurements of dissolved oxygen (DO), pH, and temperature.
② Automatic Sensor Recognition:
Instantly identifies sensor types upon power-up, allowing for immediate measurement without manual setup.
③ User-Friendly Operation:
Equipped with a intuitive keypad for full-function control. The streamlined interface simplifies operation, while integrated sensor calibration capabilities ensure measurement accuracy.
④ Portable & Compact:
Lightweight design facilitates easy, on-the-go measurements across various water environments.
⑤ Quick Response:
Delivers rapid measurement results to enhance work efficiency.
⑥ Night Backlight & Auto-Shutdown:
Features a night backlight and ink screen for clear visibility in all lighting conditions. The auto-shutdown function helps conserve battery life.
⑦ Complete Kit:
Includes all necessary accessories and a protective case for convenient storage and transportation. Supports RS-485 and MODBUS protocols, enabling seamless integration into IoT or industrial systems.




| Product Name | Portable Multi-parameter Water Quality Analyzer ( DO+pH+Temperature ) |
| Model | LMS-PA100DP |
| Range | DO: 0-20mg/L or 0-200 % saturation;pH: 0-14pH |
| Accuracy | DO: ±1~3%;pH: ±0.02 |
| Power | Sensors: DC 9~24V; Analyzer: Rechargeable lithium battery with 220v to dc charging adapter |
| Material | Polymer Plastic |
| Size | 220mm*120mm*100mm |
| Temperature | Working Conditions 0-50℃ Storage Temperature -40~85℃; |
| Cable length | 5m, can be extended according to user need |
① Environmental Monitoring:
Ideal for quick dissolved oxygen testing in rivers, lakes, and wetlands.
② Aquaculture:
Real-time monitoring of oxygen levels in fish ponds to optimize aquatic health.
③ Field Research:
Portable design supports on-site water quality assessments in remote or outdoor locations.
④Industrial Inspections:
Suitable for rapid quality control checks in water treatment plants or manufacturing facilities.

Frankstar presents a portable multi parameter water quality analyzer that combines dissolved oxygen, pH, and temperature sensing in a single handheld instrument. Designed for professionals who need reliable field measurements without the complexity of laboratory grade equipment, this device brings dual sensor intelligence to every testing site. Whether you are monitoring natural waters, checking aquaculture conditions, or verifying industrial discharge, this analyzer is built to deliver accurate and dependable results quickly and simply.
Integrated sensing for complete water quality insights
The core strength of this device lies in its integration. Instead of carrying separate meters for dissolved oxygen, pH, and temperature, you now have one compact unit that measures all three parameters in a single operation. This integration saves time, reduces equipment weight, and simplifies data collection in the field. The dual sensor intelligence ensures that the dissolved oxygen and pH readings work together with temperature inputs, allowing the instrument to compensate automatically for variables that can affect measurement accuracy.
Temperature is a critical factor in both dissolved oxygen and pH measurements. Because oxygen solubility in water changes with temperature, and pH electrode response can also be temperature dependent, the built in temperature sensing supports automatic compensation. This means you can trust the readings even when you are working in changing environmental conditions, from cold mountain streams to warm coastal waters. The result is accurate, reliable data that supports better decisions in research, operations, and compliance.
Easy to use for professionals on the go
Field work demands instruments that are straightforward and forgiving. This analyzer has been designed with ease of operation in mind. The user friendly interface guides you through the measurement process, reducing the chance of error and helping you get consistent results even with minimal training. Clear readings and intuitive controls mean you can focus on the site conditions rather than struggling with complicated menus or calibration steps.
Portability is another key advantage. The device is built to be carried easily to remote locations, onboard vessels, or along sampling transects. Its robust construction is intended to withstand the bumps, splashes, and temperature changes that come with active fieldwork. You do not need to handle it with excessive caution, but you can still expect dependable performance throughout long sampling days.
Long lasting battery power ensures that the instrument is ready when you are. For environmental monitoring teams conducting multiple site visits in one day, or for offshore operators who need quick checks at various points, this extended battery life minimizes downtime and keeps your workflow moving. The combination of portability, durability, and battery endurance makes this analyzer a practical choice for those who need water quality data anytime and anywhere.
Applications across marine and environmental monitoring
This multi parameter analyzer is well suited for a wide range of on site testing tasks. In environmental monitoring, it can be used to assess the health of rivers, lakes, estuaries, and coastal zones. Dissolved oxygen levels are a primary indicator of aquatic ecosystem vitality, and pH helps determine the acidity or alkalinity of the water body. Together with temperature, these parameters provide a snapshot of current conditions that can inform habitat assessments, pollution studies, and restoration projects.
For aquaculture operations, maintaining proper dissolved oxygen and pH is essential for the health of fish and shellfish. Fluctuations in these parameters can stress aquatic organisms and lead to poor growth or disease outbreaks. With this portable analyzer, farm managers can perform regular checks at multiple ponds or tanks, making quick adjustments before conditions become problematic. The ease of use encourages frequent testing, which is a cornerstone of responsible aquaculture management.
In offshore and industrial settings, the analyzer supports routine process monitoring and discharge verification. Operators can collect immediate readings to confirm that water treatment systems are working effectively or to document conditions at the point of discharge. This real time data is valuable for internal quality control and for demonstrating compliance with environmental permits. The device also serves as a useful educational tool in training sessions, where students or field staff can learn the fundamentals of water quality measurement without the intimidation of complex laboratory instruments.
Buyer value and long term reliability
Choosing the Frankstar portable multi parameter water quality analyzer means investing in an efficient and reliable field tool. The integration of three sensors into one device reduces capital costs, maintenance burden, and the amount of equipment you need to transport and manage. Replacing multiple single parameter meters with one compact analyzer simplifies inventory and reduces the risk of leaving a critical sensor behind.
The automatic compensation feature not only improves accuracy but also reduces the technical skill required to obtain trustworthy data. This makes the instrument accessible to a broader range of users, from experienced researchers to field technicians who may not have a deep background in electrochemistry. In turn, this increases the consistency of data quality across a team, because all users operate with the same built in compensations and standard procedures.
Robust design and long lasting battery contribute to lower total cost of ownership. Fewer breakdowns and less frequent charging mean more time in the field and less time troubleshooting. For organizations that operate in remote or harsh environments, this reliability is crucial. It ensures that monitoring schedules are met and that data gaps are minimized.
A smart choice for modern water quality programs
As water quality monitoring becomes more frequent and more distributed, the demand for portable, accurate, and easy to use instruments grows. The Frankstar analyzer answers that demand by placing professional grade measurement capability in the palm of your hand. Its design philosophy is simple: give the user a device that does not require a laboratory to produce laboratory worthy results.
Whether you are a marine researcher studying hypoxia, an environmental consultant performing site assessments, or an aquaculture engineer overseeing daily operations, this multi parameter analyzer can become an indispensable part of your toolkit. Its combination of DO, pH, and temperature sensing with automatic compensation and portability makes it a versatile solution for diverse applications.
Inquiry and support from Frankstar
Frankstar is committed to providing ocean technology solutions that meet the demands of real world operations. If you are considering this portable multi parameter water quality analyzer for your team, we invite you to contact us for more information, pricing, or a demonstration. Our technical staff can help you determine whether this device fits your specific monitoring requirements and offer guidance on calibration, maintenance, and best practices. Reach out to Frankstar today to learn more about how this analyzer can support your water quality monitoring efforts.