Portable Water Quality Multi-Parameter Meter, Odo, Turbidity, Ec, CT, Chlorophyll, Nh4+, F-, No3-, ORP

Optical DO Sensor
The Broadsensor optical DO sensor(diameter 16mm) is coated with a luminescent material. Blue Light from an LED strikes the luminescent chemical on the sensor. The luminescent chemical instantly becomes excited and then as the excited chemical relaxes, it emit red light. The red light is detected by a photo diode. The time it takes for the chemical to return to a relaxed state is measured by referring an independent red led light. Oxygen has a
dampening effect on this reaction. The oxygen concentration is proportional to the time it takes for the luminescent material to return to a relaxed state.

Key Advantages:
• Smart sensor retains all calibration in the sensor
• Membrane-less, no electrodes design
• Flow Independent and No oxygen consumption
• No warm-up time required
• Easy to store
• User-replaceable sensor cap
• Low drift and long life time
• All made by Broadsensor, including fluorescent film
• Support salinity compensation
• Digital output, support RS485 Modbus protocol

Specification

Technical Specifications        
Measurement Method                                          luminescence quenching technique
Range                                                                  0-20mg/L or 0-200% Air Sat.
Resolution                                                            0.01mg/L
Accuracy                                                              ±3% reading or 0.05mg/L w.i.g
Operating temperature                                         0~45ºC
Storage Temperature                                           -10~50ºC
Min. Detection Limit                                             0.05mg/L
Warranty                                                              1 year
Depth                                                                    IP68
Power                                                                   DC5V 5%
Output                                                                  RS485,Modbus RTU Protocol
Materials                                                             Titanium
Dimensions                                                          Length 143mm(Default),diameter 16mm
Flow Rate                                                              < 3 m/s
Response time                                                    Minimum 30s T90
Field life*                                                             Sensor 2 years or greater, sensor cap 2 years or greater
Recommended Calibration                                 Sensor 6 months                                     
maintain Frequency *

Note:*Field life and calibration frequency dependent on site conditions.

Optical Turbidity Sensor
Broadsensor measures turbidity with an fiber optics sensor. An 860nm light from the emitter enters the sample via fiber and scatters off particles in the water. The scattered light at 90 degrees, enters a PD detector via fiber. This follows the nephelometric technique of measurement, and values are expressed in nephelometric turbidity units (NTUs). It follows the ISO7027 standard.

Key Advantages:
• Fiber optics path
• Ambient light rejection technology
• Internal temperature compensation for optics
• Easy to calibrate
• Low calibration solution volume, 50mL minimum
• Provide SS and transparency output(calculated from turbidity)
• RS485 Modbus RTU output

Specification

Technical Specifications     
Measurement Method                                                          scattered light at 90 degrees, ISO7027
Range                                                                                  0.3~1000NTU
Resolution                                                                            0.1NTU
Accuracy                                                                                ±5% reading or 0.5NTU w.i.g
Operating temperature                                                          0~45ºC
Storage Temperature                                                          -10~50ºC
Min. Detection Limit                                                            0.3NTU
Warranty                                                                             1 year
Depth                                                                                  IP68,10m Max
Power                                                                                  DC5V 5%
Output                                                                                  RS485,Modbus RTU Protocol
Materials                                                                              Titanium, PVC,PMMA
Dimensions                                                                         Length 143mm(connector is not included), diameter 16mm
Flow Rate                                                                           < 3 m/s
Response time                                                                   Minimum 10s T90
Field life*                                                                             Sensor 2 years or greater
Recommended Calibration                                                        
maintain Frequency *                                                        Sensor 6 months

Note:
*Field life and calibration frequency dependent on site conditions.

Digital 4-electrode Conductivity Sensor
Broadsensor conductivity sensor measures conductivity by AC voltage applied to 316 or C22 electrodes. The sensor requires little maintenance or special attention for storage and can measure high conductivity water long-term.

Key Advantages:

• Exposed 4-electrode with 316 or C22 conductivity cell, calibration parameters are stored in the sensor.
• mV class AC drive, better polarization resistance, smaller drift.
• RS485 output, Modbus protocol.
• Titanium shell, suitable for a variety of complex applications
• IP68 connector.
• Exposed structure, easy to clean.
• Output water temperature, conductivity and salinity, TDS simultaneously.

Specification

Technical Specifications
Measurement Method                                                4-electrodes AC drive
Range                                                                       1uS/cm~100mS/cm
Resolution                                                                1uS/cm
Accuracy                                                                   ±3% reading or ±0.2mS/cm w.i.g**
Operating temperature                                              5~45ºC
Storage Temperature                                                -10~50ºC
Min. Detection Limit                                                  0.3uS/cm
Warranty                                                                   1 year
Depth                                                                        IP68
Power                                                                        DC5V 5%
Output                                                                       RS485,Modbus RTU
Materials                                                                  Titanium, 316 or C22, PEEK
Dimensions                                                              Length 143mm(connector not included), diameter 16mm
Flow rate                                                                    < 3 m/s
Response time                                                         10s T90
Field life*                                                                  2 years or greater
Recommended Calibration
maintain Frequency *                                                3 months

Note:
*Field life and calibration frequency dependent on site conditions.

Digital pH Sensor
BroadSensor online pH Sensors with Integrated Digital Electronics for Plug and Play Capability with Broadsensor multi-parameter sonde and IP68 connector to any PLC. pH sensors have a unique design that incorporates a user-replaceable sensor tip (module) and a reusable sensor base that houses the processing electronics. This allows users to reduce the costs and easy to maintain.

Key Advantages:
• Glass electrode pH sensor, a potassium chloride (KCl) solution.
• Using capillary fiber materials as junction materials.
• NTC10K inside, easy to use.
• User-replaceable pH electrode, reusable sensor base.
• RS485 output, Modbus protocol.
• IP68 connector.

Technical Specifications
Measurement Method                                                    pH Glass/Ag/AgCl Ref
Range                                                                             pH 0-14
Resolution                                                                      0.01pH
Accuracy                                                                        ±0.1 (Calibration temperature within ± 10ºC,pH 4-10), others±0.2
Operating temperature                                                   5~45ºC
Storage Temperature                                                    -10~50ºC
Min. Detection Limit                                                       NA
Warranty                                                                       1 year(sensor base), 3 months (pH electrode)
Depth                                                                            IP68
Power                                                                            DC 5V±5%
Output                                                                           RS485 Modbus protocol
Materials                                                                       PVC,TA
Dimensions                                                                   Length 143mm(connector and glass bulb not included) ,
diameter                                                                       16mm
Flow rate                                                                        < 3 m/s
Response time                                                              45s T90
Field life*                                                                       Sensor base 2 years or greater, electrode 8 months or greater
Recommended Calibration
maintain Frequency *                                                    4 weeks

Note: *Field life and calibration frequency dependent on site conditions.