YSI ProDSS portable turbidity/chlorophyll/water quality multi parameter tester

Portable digital sampler for measurementpH、ORP、 Dissolved oxygen (optical), conductivity, turbidity, chlorophyll, blue-green algae (PC or PE), temperature, depth, and more parameters. Designed for applications in surface water, groundwater, nearshore, and fisheries, the robust and reliable ProDSS can measure up to 17 parameters. The distinctive feature of ProDSS is the digital intelligent sensor that users can freely replace, and the instrument can automatically recognize when connected. Backlight, larger storage capacity, convenient calibration steps, rechargeable batteries, and powerful PC data management program (KorDSS) make ProDSS more user-friendly. The optional GPS function, wider sensor measurement range, and variable cable length make the instrument fully meet user needs. The military interface and waterproof (IP-67), rubber coated casing ensure the durability of the instrument even under harsh outdoor environmental conditions.

This isYSI's WQS family's new handheld water quality multi parameter instrument is designed for research on point measurement and profile measurement. Using ProDSS color display, all EXO measurement parameters except FDOM can be measured. Including optical dissolved oxygen, turbidity, chlorophyll, phycocyanin, phycoerythrin, PH，ORP， Total dissolved solids, salinity, seawater density, total suspended solids, ammonia nitrogen, nitrate nitrogen, chloride, depth, optional host with GPS for field data positioning, long-life lithium battery ensures reliable application of the instrument in the field

ProDSS host performance, sensor performance, and other performance metrics

ProDSS is a unique and advanced water quality platform It is designed for a wide range of occasions in natural environments, and ProDSS isMulti parameter set temperatureIntegration of conductivity, optional depth, and 3-4 other sensors. The host performance of ProDSS is uniqueAnd the ability to carry sensors with elasticity. Its performance and indicators are as follows:

Host performance

1Probe cable and host for useMS military interface, the equipment has the ability to work underwater at 100 meters

2The measurement protection cover of the probe has a submerged counterweight, making it easy to measure profiles.

3The device is a platform with a universal interface that can be used to assemble different sensors. Users can replace sensors and put them into use at any time in the field.

4The design and material selection of the equipment are suitable for outdoor and harsh water environments, including titanium and laser welded sensor housings for waterproofing, Optical sensor working surface made of corrosion-resistant and impact resistant materials.

5、The equipment has built-in calibration, communication, and data download operation capabilities.

6The equipment design includes field replacement of dissolved oxygen, conductivity, temperaturepH、ORP、 Turbidity sensor capability And such replacement should not open the host or expose the built-in circuit board to the environment

7The equipment should have a separately sealed built-in battery compartment, Powered by rechargeable batteries.

8withGPS option, indicating the geographic location of the measurement point

9Equipped with a barometer,375-825mmHg， Accuracy ± 1.5mmHg, used for dissolved oxygen and pressure compensation

10、Point measurement and profile measurement methods with self stabilization function.

Sensor performance:

11、All sensors should beThe coexistence of intelligence stores its calibration data within it Sensors should be able to be exchanged between different hosts and transferred between different interfaces of the same host without the need for calibration for accurate measurement

12、 The equipment should use an optical dissolved oxygen sensor based on fluorescence lifetime detection technologyThe sensor has an accuracy of ± 0.1 mg/L or ± 1% in 0-20mg/L, and an accuracy of ± 1% air saturation in 0-200% air saturation. It also has a fast response time and does not use any stirring device to achieve this indicator under all operating conditions or zero flow In addition, the sensor has an accuracy of ± 8% reading in the range of 20-50 mg/L or 200% -500%. The optical dissolved oxygen film cover has a structure that can be replaced in the field without any tools; Dissolved oxygen sensors can be calibrated at 1 point (saturated water or saturated gas) or 2 points (zero sum saturated gas or saturated water)

13、 The equipment should have the ability to use scattering measurementTurbidity sensor with 0-4000FNU. sensorFromIt has an accuracy of 0.3 NTU or ± 2% from 0-999 NTU, and an accuracy of ± 5% from 1000-4000 NTU

14、The equipment can be obtained from on-site turbidity measurement and laboratory sample testingThe value of TSS

15、Non breathable depth sensor measurement for equipment0-100 meters of water with an accuracy of ± 0.4% over the full range and a resolution of 0.001 meters. The optional options include a measurement range of 0-10 meters with an accuracy of ± 0.004 meters and a measurement range of 20-100 meters with an accuracy of ± 0.04 meters

16、 The equipment should have sensors for measuring chlorophyll and blue-green algae using fluorescence method. Sensors are in use fromWhen 0-100 RFU or 0-400 µ g/L PC or 0-100 RFU or 0-280 µ g/L (PE), it exhibits linearity: r2 ≥ 0.999 for the full range of Rhodamine WT

17、The device has the capability to pass throughNIST constant calibration thermistor is used to measure -5-+70 ℃ with an accuracy of ± 0.2 ℃ and 0.1 ℃

The ability of resolution.

18、The equipment is equipped with a four electrode conductivity tube for measurement0-200mS/cm range 0-100 mS/cm, And it has a tolerance of ± 0.5% or0A conductivity sensor with an accuracy of 0.001uS/cm, 100-200 mS/cm, ± 1% accuracy, and resolutions of 0.001, 0.01, and 0.1mS/cm; In addition, the design of the conductivity cell should have a design that prevents the retention of bubbles and affects the measurement Conductivity sensors must be linear and require only single point calibration.

19、Sea water density can be calculated based on temperature, salinity, pressure (depth) dataThe density range of seawater is 0-50 σ, with a resolution of 0.1 σ

20、The device hasA sensor with a resolution of 0.01 units and an accuracy of ± 0.2 units measuring pH in the range of 0-14, which is a composite sensor with a reference electrode The sensor should have the function of measuring various ion strengths of water over a full range The sensor should be equipped with an amplification circuit internally to improve signal response and stability, and can be replaced in the field within minutes

Unique design of sensor head.

21. The equipment should have an ORP sensor measuring -1999-+1999 mV, with an accuracy requirement of ± 20mV and a resolution of 1mV, using a composite sensor with a reference electrode

22The equipment should have the function of providing salinity output calculated based on conductivity and temperature measurements, with a measurement range0-70ppt, Accuracy of 1% or ± 0.1ppt (whichever is higher), resolution of 0.01ppt

23、The instrument has the ability to connect ammonia nitrogen, nitrate nitrogen, and chloride sensors, with a depth of use of up to20 meters and measured simultaneously with temperature/conductivity sensors. Can calculate the free ammonia in water from pH, temperature, and ammonium

Other performance

24、The equipment should have user-friendly software programs for communication and data processing, and the presentation of data should be in two forms: reports and graphics, The output of this software must have the ability to output data toCSV format

25、 The equipment should have the ability to upgrade its built-in firmware and sensor software in the field.

26、 The device software should haveThe Smart QC intelligent quality control function ensures the avoidance of faults, errors, and data loss

27. The device should come standard with non-volatile memory to store 1 million readings, and power failure should not result in memory loss. Additionally, the memory does not require a backup battery

28、 The equipment should have a sensor mounting interface base made of metal to prevent wire slippage, and the sensor should include titanium fastening screws that can be replaced in the field.

29、 The equipment avoids severe damage and data loss to the entire machine caused by damage to a single sensor.

30The desktop software has a Chinese version, geographical indication attachment function, data download and upgrade function.