YSI EXO Multi Parameter Water Quality Detector

YSI EXOThe host is a unique and advanced water quality platform designed for a wide range of natural environments,EXOIt is a set of multiple parametersCTDAnd others3~5Integrating sensors into one.EXOThe host performance is unique and has flexible sensor mounting capabilities. Its performance and indicators are as follows:
Host performance
1. The equipment has the capability to operate underwater250The ability to work with rice;
2. Equipment not exceeding8Centimeter diameter,72Centimeters long, weight not exceeding3kg .
3. The device is a platform with a universal interface that can be equipped with different sensors. It can be used or reassembled by users in the field and at any time. Similarly, sensors should have wet swappable connectors that allow for replaceable access to any sensor interface on the host platform;
4. The design and material selection of the equipment should be suitable for outdoor and harsh water environments, including sensor housings made of titanium and laser welded for waterproofing, wet plug-in joints for corrosion resistance, impact resistance, and chemical resistanceXenoyPlastic casing and instrument casing with reinforced structural design, sapphire material optical sensor working surface;
5. The device is equipped with built-in Bluetooth communication technology for cable free operation during calibration, communication, and data downloading; The configuration should include built-in magnetic switches and external activation devices for wireless control of Bluetooth;
6. The equipment design includes field replacement of dissolved oxygen, conductivity, temperaturepH、ORPTurbidity, chlorophyll/Total blue-green algaefDOMThe ability to clean with the central cleaning brush; And such replacement should not open the host or expose the built-in circuit board to the environment;
7. The device should have low power consumption to extend deployment, and must have the ability to15Simultaneously measure temperature, conductivity, pH, redox potential, turbidity, and chlorophyll at minute intervals/When multiple parameters such as blue-green algae, total algae, and optical dissolved oxygen are taken into account, the battery life of the algae itself will exceed90Heaven;
8. The device should have a separately sealed built-in battery（4section1The battery room can operate in self powered mode and can also be powered by rechargeable batteries available in the market; The battery replacement should be done using a wrench without exposing the circuit board of the device; The equipment should also be able to be powered by cables12VDC power supply or use signal output connector（SOA）ByUSBMultiple power supply methods work.
Sensor performance
9. All sensors should be“intelligent”The coexistence stores its calibration data in it. Sensors should be able to operate in different scenariosEXOInter host exchange and transfer between different interfaces of the same host without calibration for accurate measurement;
10. The equipment should use fluorescence lifetime detection technologyOptical dissolved oxygen sensorThe sensor is0~20mg/LInside has±0.1 mg/LThe accuracy, in0~200%The air saturation has±1%Accuracy of air saturation and response timeT63＜5Second, and achieve this indicator without using any stirring device under all operating conditions or zero flow. In addition, sensors are20~50 mg/Lor200%~500%Inside has±5%Accuracy of readings. The optical dissolved oxygen film cover has a structure that can be replaced in the field without any tools; Dissolved oxygen sensors can be used1Point calibration (saturated water or saturated gas) or2Point calibration (zero sum saturated gas or saturated water);
11. The device has the ability to be usedTotal algae sensor measures chlorophyll and blue-green algaeThe ability of a single sensor's dual fluorescence channel to simultaneously measure chlorophyll and blue-green algae blue;
12. The equipment should have the ability to use scattering measurement0~4000NTUofturbidity sensorThe sensor isAMCO-AEPAFrom standard solution0~999NTUWhen having±2%or0.3NTUAccuracy, from1000to4000NTUhave±5%Accuracy;
13. Optional non breathable equipmentDepth sensormeasurement0~250Rice water body and has±0.4%Full range accuracy and0.001The resolution of meters. Other options include0~10Measuring range in meters and possessing±0.4%Full range accuracy and0~100Measuring range in meters and possessing±0.4%Full range accuracy;
14. The device has the capability to pass throughNISTConstant calibration thermistor for measurement-5~+50℃And has±0.01℃Accuracy and0.01℃The ability of resolution; eachtemperature sensorMust have factory calibration/NISTThe reference table;
15. The equipment is equipped with a four electrode conductivity tube for measurement0~200mS/cmMeasuring range and possessing±0.5%or0.001uS/cmAccuracy and0.001to0.1mS/cmThe resolution ofTriE Conductivity SensorIn 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;
16. The device has0~14The range and resolution are0.01The accuracy is±0.2measurementpHThe sensorThe sensor 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 has a unique design where the sensor head can be replaced in minutes in the field;
17. The equipment should have measurement capabilities-999~+999 mVofORPsensorThe accuracy requirement is±20mVAnd the resolution is1mVUsing composite sensors with reference electrodes;
18. The equipment should have the ability to provide calculations based on conductivity and temperature measurementssalinityOutput function, its measurement range0~70ppt,Accurate1%or±0.1ppt(whichever is larger), with a resolution of0.01pptThe calculated equation should be used in the standard methods for water and wastewater testing;
19. The equipment should have a central motor-driven system with pollution protection providedNylon cleaning brush to remove optical sensors andpHSensor contaminationThe cleaning brush should have a protective cover to prevent sediment from accumulating on the cleaning brush head, which can be maintained and replaced in the field;

Other performance
20. The device should have user-friendly software programs for communication and data processing, and the presentation of data must be in both report and graphical forms. The output of the software must have the ability to output data toEXCELFormat;
21. The equipment should have the ability to upgrade its built-in firmware and sensor software in the field;
22. The device software should haveSmart QCThe intelligent quality control function ensures the avoidance of faults, errors, and data loss;
23. The equipment should be compatible withEXOCompatible with handheld devices to display calibration, configuration, reporting, and storage status;
24. All sensor interfaces should have a secondary backup seal to protect internal circuits;
25. The battery compartment structure of the equipment must be equipped with sealing and safety protection devices to protect the operator from possible damage caused by changes in air pressure inside the battery compartment;
26. The equipment should come standard512MNon volatile memory for storage100Ten thousand readings, power failure does not cause memory loss, and the backup battery for memory is not needed;
27. The device should support signal output through the connectorUSBOutput andSDI12Output, the host should be able to store data and executeSDI12Function to ensure data redundancy;
28. The equipment should be equipped with a metal sensor mounting interface base to prevent wire slippage, and the sensor should include titanium fastening screws that can be replaced in the field;
29. The equipment should have overvoltage protection to avoid severe damage and data loss to the entire machine caused by damage to a single sensor;

Sensor performance: