Dissolved oxygen underwater pH、 Multi parameter online temperature monitoring system

The innovative and cutting-edge optical sensor technology makes water environment monitoring simple and easy. Easy to use, compact and small, versatile, customized for customers, underwater dissolved oxygen pH、 The temperature multi parameter online monitoring system will provide powerful assistance for your water monitoring and research.

The underwater multi parameter online monitoring system adopts the latest AquapHOx technology supported and funded by the EU's Horizon 2020 program. With just one recorder host, a variety of optical pH and oxygen sensors, and a built-in temperature sensor, it can accurately measure dissolved oxygen, pH, and temperature in the water environment. Up to 40 million data points will be automatically stored in 4GB of industrial grade memory, providing almost unlimited storage space that fully meets the requirements for long-term testing. After underwater pressure testing, the system is able to operate normally at depths of up to 4000 meters. In addition to standard monitoring systems, we also offer innovative underwater sensor monitoring solutions.

We offer a variety of optical sensors for dissolved oxygen, pH, and temperature. In terms of appearance design, sensors include micro and mini types, probe type and needle type; Divided by the corresponding time speed, it also includes standard and high-speed versions; There are also narrow range high-precision trace oxygen sensors on the measuring range. Sensor replacement is simple, simply replace the cover to change the measured parameters and types of sensors, meeting different parameter requirements and monitoring scenarios.

application area

üLong term monitoring of underwater or other liquid spaces using sturdy and durable sensors and sensor covers

üVorticity related observations (high-speed, needle sensors)

üProfile monitoring of water column (high-speed sensor)

üMonitoring sediment profiles with high spatial resolution using micro and mini sensors

üResearch on the Minimum Oxygen Zone (New Trace Oxygen Sensor)

üIn situ monitoring of cultivation process (probe type sensor)

measuring principle

RFOxygen pH、 The temperature multi parameter online monitoring system is based on RF (RedFlash) technology and includes sensors, dyes, and reading devices (measurement host) that are sensitive to the measured parameters. The reading device is equipped with an LED excitation light source and a photodiode. The sensor dye and reading device are transmitted through optical fiber excitation light and emission light.

The sensor dye can be excited by the red orange light of LED (610nm-630nm), producing near-infrared fluorescence (760nm-790nm). The strength or brightness of this fluorescence is related to the oxygen partial pressure and the protonation and deprotonation of the sensor dye, so it can be used to measure oxygen content and pH. RF technology has the characteristics of high measurement accuracy, high reliability, low energy consumption, low cross sensitivity, and high-speed response. Red light excitation can significantly reduce interference caused by spontaneous fluorescence samples and reduce stress on biological samples.

Product Features

lMulti in one, oxygen pH、 Multi parameter temperature monitoring

lIndependent work, real-time recording, no need for computer

lHigh cost-effectiveness, simple and easy to operate

lDeep up to 4000m

lIndustrial grade massive storage

lUnprecedented flexibility

lAdopting the latest optical pH sensor technology and fast and reliable fiber optic oxygen sensor technology

Configuration composition

Dissolved oxygen underwater pH、 The temperature multi parameter online monitoring system recorder includes an independent working recorder, freely selectable oxygen and pH sensors, OEM modules for customer integration, and a new generation of PC software.

Without the need to connect to a computer, the recorder can independently obtain and record your data, meeting the needs of your laboratory or field research. After the experiment is completed, download the data through the universal software we provide for further processing. Oxygen and pH sensors come in various types, with selectable ranges and flexible configuration options. The system can also be deeply customized according to specific needs.

Technical indicators

1. Recorder

ØWeight in air/water: 1.35kg/0.85kg

ØSize: Diameter 63mm, Length 300mm

ØPCCommunication: USB, UART (RS485/Modbus, analog output optional)

ØBattery: Lithium polymer battery

ØData storage: 2GB

ØTemperature sensor: built-in, Pt100， Response time less than 2 seconds

ØMaximum depth: 4000m

ØSensor head: Optical oxygen and pH sensors, with optional range and type;

ØMeasurement principle: RedFlash technology

2. Oxygen sensors: According to their range and response time, oxygen sensors can be divided into three categories: full range, trace, and high speed. Applicable temperature: 5~40 ℃, applicable salinity: 10~40PSU.

(1)Standard version: Range of 0.05~23mg/L, detection limit of 0.005mg/L, response time<15s

(2)High speed version: range of 0.05~23mg/L, detection limit of 0.005mg/L, response time<1s

(3)Trace version: range 0.0005-2.3mg/L, detection limit 0.2 μ g/L, response time<2s

3. pHSensors: divided into two models according to the range, pH7, pH8。 The pH ranges are 6.0~8.0 and 7.0~9.0, respectively; The resolution is 0.003@pH =7 or pH=8; Response time is less than 60 seconds.

4. New generation PC software: The software provides device settings and sensor calibration. The sensor readings can be displayed in the form of numbers and charts, and can be stored in corresponding data files for further data analysis.

Application Cases

In the summer of the Adriatic Sea, monitoring the pH, dissolved oxygen, and temperature in the biofouling environment of the dock is installed in the North Sea (surrounded by small shrimp)