Optical Chlorophyll Monitor Probe Sensor

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The principle of the PCH-800 Chlorophyll Sensor is using the characteristics of chlorophyll.

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Fuzhou Probest Intelligent Technology Co., Ltd.

Fujian, China

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The PROBEST CH-800A Chlorophyll Probe expands the PROBEST suite of sensors for multi-parameter MUC200, water quality monitoring applications. The probe is designed to estimate phytoplankton concentrations by detecting the fluorescence from chlorophyll in situ. The data can be useful in predicting detrimental algae blooms and, indirectly, in determining nutrient loading in environmental applications. The probe is capable of long-term water quality onsite monitoring.
The PROBEST CH-800A Chlorophyll Probe uses technology similar to that used by fluorometers, but the PROBEST sensor is much smaller, making it compatible with the probe ports in PROBEST 7-Series instruments, MUC200 which max is 7sensors, with simultaneous measurement of 7 optical probes (dissolved oxygen, turbidity, chlorophyll, blue-green algae, and/or rhodamine, COD, Ammonia, Conductivity, ph), along with other parameters.
Chlorophyll is in various forms is bound within the living cells of algae, phytoplankton, and other plant matter found in water. Chlorophyll is a key component in the process of photosynthesis, the critical process in which energy from sunlight is used to produce life-sustaining oxygen. The amount of chlorophyll in a water sample is used as a measure of suspended phytoplankton, the magnitude of which can significantly affect the overall quality of water. Before this PROBEST sensor made in situ measurement convenient, the common way to measure chlorophyll was to collect samples and use extractive analysis in a laboratory or take large equipment to the field. Extractive analysis methods, though highly accurate, are time-consuming and require an experienced analyst. The PROBEST optical, fluorescence probe is quick and efficient to use and enables spot sampling in remote areas as well as continuous or interval monitoring.
Measurement Principle
The principle of the PCH-800 Chlorophyll Sensor is using the characteristics of chlorophyll A who has absorption peaks and emission peaks in the spectrum.

                                                            Model
                                                            PCH-800A
                                                        
                                                            Brand
                                                            PROBEST
                                                        
                                                            Code
                                                            90268090
                                                        
                                                            Measurement range
                                                            0-500 ug/L
                                                        
                                                            Cable   length
                                                            Standard:10m,the   maximum may be extended to 100m
                                                        
                                                            Measurement   Accuracy
                                                            ±5% of the signal   level corresponding value of 1ppb  Rhodamine   WT Dye
                                                        
                                                            Pressure range
                                                            ≤0.4Mpa
                                                        
                                                            Protective rate
                                                            Sensor：IP68/NEMA6P；Transmitter：IP65/ NEMA4X
                                                        
                                                            Calibration  Deviation value
                                                            calibration,slope Calibration
                                                        
                                                            Weight
                                                            Sensor：0.8KG；Transmitter：1.35KG
                                                        
                                                            Requirements
                                                            Suggest a multipoint monitoring for the distribution of  Blue-Green Algaein water is very uneven.Water turbidity  is below 50NTU.
                                                        
                                                            Dimension
                                                            Sensor：Dia37mm*L 220mm  Transmitter：145*125*162mm(L*W*H)
                                                        
                                                            Main   material
                                                            Body：SUS316L（fresh   water），Titanium alloy（marine）；  Cover：POM；Cable：PUR
                                                        
                                                            Storage temperature
                                                            -15-50℃
                                                        
                                                            Measuring   temperature
                                                            0- 45℃（Non-freezing）
                                                        
                                                            Communication protocol
                                                            MODBUS  RS485
                                                        
                                                            Power supply
                                                            AC：85-500VAC (50/60HZ)    DC：9~36VDC
                                                        
                                                            Output
                                                            3-way 4-20mA
                                                        
                                                            Relay
                                                            Three-way relays, programmed response parameter  and response value.

Chlorophyll online monitoring of water plant inlet, drinking water source and aquaculture and etc.
Chlorophyll online monitoring of different water bodies, such as surface water, landscape water, seawater and etc.

Based on the Fluorescent measuring target parameter of pigment, can be identified before being affected by potential water bloom.
Without extraction or other treatment, rapid detection to avoid the impact of long shelving of the water sample.
Digital sensor, high anti-jamming capacity, and far transmission distance.
Standard digital signal output can achieve integration and networking with other equipment without a controller.
Plug-and-play sensors, quick and easy installation.
Fast, convenient, in-situ monitoring
For online long-term measurement
Small field-replaceable probe design