9-parameter water quality tester

1. Scope of application

The portable 9-parameter water quality detector is an intelligent analytical instrument, which integrates a portable handheld detection host + a variety of sensors. It can be used for the determination of dissolved oxygen in water bodies in departments such as tap water source monitoring, aquaculture farms, environmental protection, sewage treatment plants, beverage industry and scientific research units. The instrument has a novel appearance and is easy to carry, suitable for on-site and field operations. At the same time, the instrument battery has a long continuous working life and can be used as a routine analytical equipment in the laboratory.

2. Instrument features

(1) The instrument can perform 9 parameters such as water depth, water temperature, conductivity, dissolved oxygen, redox potential, blue-green algae, chlorophyll, turbidity and pH.

(2) The instrument adopts microprocessor technology and has automatic temperature compensation function. It can perform zero oxygen calibration, full scale calibration, air pressure calibration and salinity calibration.

(3) The instrument has a data power-off protection function. After the instrument is turned off or in the case of abnormal power failure, the measurement data and set parameters stored in the instrument will not be lost.

(4) The instrument adopts a low-power design and has an undervoltage display mark. The instrument can store, delete and check the measurement results. It can store more than 100,000 test data.

(5) The instrument uses a new material Android panel with good reliability.

(6) The instrument protection level is IP54, waterproof and dustproof, suitable for field operations.

3. Main technical performance of the instrument

(1) Water depth sensor:

Measuring range: 0-3m (maximum expandable to 300m, customized)

Measurement accuracy: 0.2%FS, 0.5%FS (default)

Output signal: 4-20mA, 0-5V, 0-10V

Overload capacity: <1.5 times the range

Temperature drift: 0.03%FS/℃

Power supply: 12-36VDC typical 24V

Power consumption: 0.48W

Medium temperature: -10~50℃

Measurement medium: no stainless steel Corrosive oil, water, etc.

Protection level: IP68

Load capacity: Current load capacity: ≤500Ω

Voltage output resistance: ≤510Ω

(2) Conductivity sensor:

Features: 316L stainless steel or engineering plastic, corrosion resistant, long service life

Electrode constant: k=1.000

Electrode type: two-electrode type

Electrode material: 316L stainless steel

Mounting thread: 1/2"NPT

Withstand pressure: 0.5Mpa

Medium temperature: 0～60℃

Lead structure: direct lead wire 5-meter cable as standard

(3) Dissolved oxygen sensor:

Principle: fluorescence measurement method

Concentration: 0-20mg/L (ppm)

Accuracy: <5ppm: ±0.2ppm (0.2mg/L)

>5ppm: ±0.3ppm (0.3mg/L)

Repeatability: 0.2ppm (0.2mg/L)

Response time (dissolved oxygen): T90 <30 seconds

Dissolved oxygen regression at the same temperature <0.1mg/L condition: stable for 200S

Temperature shock regression <0.1mg/L condition: stable for 1 hour

Dissolved oxygen saturation: 0-200% saturation

Temperature: 0-40℃

Communication interface: RS485 (baud rate 9600)

Communication protocol: ModbusRTU

Power consumption: 20mA

Waterproof depth: 10 meters

Shell material: ABS/PC 304 316 stainless steel

Tail material: PVC

(4) Oxidation-reduction potential:

ORP: Measurement range: -2000mV-2000mV;

Resolution: 0.1mV;

Error range: ±10mV;

(5) Blue-green algae sensor:

Principle: fluorescence method

Range: 0-200, 000 cells/ml

Detection limit: 300 cells/ml

Resolution: 1 cells/ml

Linearity: R²>0.999

Protection level: IP68

Maximum depth: 10m underwater

Temperature range: 0 ~ 50℃

Transmitter interface: Support RS-485, ModBus protocol

Assembly: Submersible

Dimensions: Φ45*175.8 mm

Power supply information: DC 5~12V, current <50mA (when not cleaning)

Probe cable length: 10m (default), customizable

Shell material: POM

(6) Chlorophyll sensor

Measuring range: 0~400μg/L; 0~100RFU

Measuring error: ±5%FS (25℃); ±0.5℃

Resolution: 0.1μg/L 0.1RFU

Temperature: 0.1℃

Response time: ≤30s

Equipment working conditions: 0~40℃

Power supply: DC 7~30V

Power consumption: 0.4W

Communication interface: RS485; standard ModBus-RTU protocol;

Measurement principle: fluorescence method

Waterproof grade: IP68

Electrode line length: default 5m

Casing material: corrosion-resistant plastic

(7) Turbidity sensor:

Measuring range: 0.00~50.00NTU; 0.0~200.0NTU; 0.0~1000.0NTU ;0~4000NTU

Measurement error: ±5%FS (25℃); ±0.5℃

Resolution: 0.00~50.00NTU Range: 0.01NTU;

0.0~200.0NTU Range: 0.1NTU;

0.0~1000.0NTU Range: 0.1NTU;

0~4000NTU Range: 1NTU;

Temperature: 0.1℃

Response time: ≤30sec

Equipment working conditions: 0~40℃

Power supply: DC 10~30V

Power consumption: 0.2W

Communication interface: RS485; standard MODBUS-RTU protocol;

Measurement principle: 90° light scattering method

Lifespan: 2 years under normal use

Waterproof grade: IP68

Electrode line length: 5m by default

Casing material: corrosion-resistant plastic

(8) PH sensor:

Measuring range: 0~14pH

Applicable temperature: 0~60℃

Percentage theoretical slope: (PTS) ≥98.5% (25℃)

Zero pH value: 7±0.25pH

Internal resistance: ≤250MΩ (25℃)

Alkali error: ≤15mV (25℃)

Response time: ≤2s (25℃)

Working environment temperature 5-40 degrees

Working environment relative humidity: ≤85%

Temperature measurement range: 0~60℃ (set temperature for manual temperature compensation, default 25℃)

Temperature measurement resolution: 0.1℃

(9) Normal working conditions of the instrument

Ambient temperature: (0.0~40.0)℃

Atmospheric pressure: 86~106 kPa

Relative humidity: <85%

Protection level: IP54

In an environment without corrosive gases and good ventilation, there is no electromagnetic interference around except the geomagnetic field.

(10) External power supply: DC 5V /2A

(11) Rated power: 3W

(12) Battery capacity: 6000mAh (standby 10h)

(13) Dimensions: 85mm*38mm*176mm

Product's Website：http://en.huoerd.com/djf/1616.html