OK-SJ1 Water Quality Purity Testing Device

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OK-SJ1 Water Quality Purity Testing Device

Product ID：HSCfx105

Price: Please inquire PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberOK-SJ1

Brand NameZZOUKEQI

Payment TermsTT，PAYPAL，Alibaba.com Pay

OK-SJ1 Water Quality Purity Testing Device
Product Introduction
The OK-SJ1 Water Quality Purity Testing Device integrates a TDS/conductivity/salinity tester and turbidity meter into a compact portable case, providing a practical solution for rapid water quality screening and field testing.
Its handheld SCON7820-type multi-parameter tester combines the functions of a conductivity tester, TDS meter and salinity tester in one compact instrument. The immersion design allows flexible measurement in field environments, while the ergonomic housing supports comfortable one-handed operation.
With IP67 waterproof protection, automatic temperature compensation, automatic range selection, one-point calibration and an automatic hold function, the OK-SJ1 is designed for convenient on-site water quality measurements.

Performance Features
•  Integrated water quality testing: Combines TDS, conductivity, salinity and turbidity testing in one portable solution.
• Handheld and portable: Compact design allows comfortable one-handed operation.
• IP67 waterproof protection: Suitable for demanding field measurement environments.
•  Wide conductivity range: 0.0 μS/cm to 20.00 mS/cm with 0.1 μS/cm minimum resolution.
•  Automatic temperature compensation: Temperature coefficient adjustable from 0.00–10.00%.
•  Automatic range and one-point calibration: Simplifies measurement and calibration.
•   Four-button operation: Simple controls for convenient field use.
• Automatic measurement hold: Supports water quality measurement by casting/immersing the tester into water and automatically locking the reading.
•  Long-life graphite electrode: K=1.0 graphite conductivity electrode provides stable measurement and is easy to clean and maintain.
• Electrode self-diagnosis: Displays electrode performance status for easier maintenance.
•   Backlit multi-line LCD: Provides clear visibility of measurement information.
•  Automatic power saving: Backlight turns off after 1 minute and the instrument automatically shuts down after 5 minutes without operation.
•  Tool-free maintenance: Battery and electrode can be replaced without special tools.
•   Long battery life: Powered by one 1.5V AAA battery.

Working Principle
The conductivity function measures the electrical conductivity of water through the conductivity electrode. Because dissolved ions affect the electrical conductivity of water, conductivity can be used as an indicator of dissolved ionic content.
The instrument can convert conductivity measurements into TDS and salinity values according to the configured conversion coefficients. Automatic or manual temperature compensation corrects the measurement according to the sample temperature.
The OK-SJ1 system also incorporates turbidity measurement through its dedicated turbidity meter, enabling rapid screening of water clarity together with conductivity-related parameters.

Technical Specifications

Parameter	Specification
Product Model	OK-SJ1
Product Type	Water Quality Purity Testing Device
Integrated Functions	TDS / Conductivity / Salinity / Turbidity Testing
Conductivity Range	0.0 μS/cm (ppm) – 20.00 mS/cm (ppt)
Conductivity Resolution	0.1 μS/cm (ppm) – 0.01 mS/cm (ppt)
Conductivity Accuracy	±2% F.S.
Temperature Measurement Range	0–100.0°C / 32–212°F
Operating Temperature	0–60.0°C / 32–140°F
Temperature Compensation Range	0.0–60.0°C
Temperature Compensation	Automatic / Manual
Temperature Coefficient	0.00–10.00% adjustable; factory setting 2.00%
Reference Temperature	15–30°C adjustable; factory setting 25°C
Calibration	Automatic-range one-point calibration
TDS Range	0.0 mg/L (ppm) – 20.00 g/L (ppt)
TDS Factor	0.40–1.00 adjustable; factory setting 0.50
Salinity Range	0.0 mg/L (ppm) – 13.00 g/L (ppt)
Salinity Factor	0.65
Conductivity Electrode	Ø13 mm, K=1.0
Electrode Material	Graphite
Display	20 × 30 mm multi-line LCD
Backlight	Automatic, 1 minute
Auto Power-Off	5 minutes
Protection Rating	IP67
Power Supply	1 × 1.5V AAA battery
Dimensions	185 × 40 × 48 mm (H × W × D)
Weight	95 g

Application Scenarios
The OK-SJ1 is suitable for rapid water quality screening and field measurements in:
•   Food and pharmaceutical regulatory inspection
•   Drinking water quality screening
•   Surface water and environmental water testing
•   Field water quality inspection
•   Water treatment and process monitoring
•   Aquaculture water monitoring
•   Laboratory sample screening
•   Mobile and outdoor water quality testing
•   TDS and conductivity measurement
•   Salinity and turbidity screening

Comparison

Feature	OK-SJ1 Water Quality Purity Testing Device	Conventional Single-Parameter Tester
Measurement Parameters	TDS, conductivity, salinity and turbidity	Usually one parameter
Design	Integrated portable system	Separate instruments
Operation	One-handed, 4-button operation	Depends on instrument
Conductivity Range	0.0 μS/cm–20.00 mS/cm	Depends on model
Temperature Compensation	Automatic / manual	Depends on model
Calibration	Automatic-range one-point calibration	Depends on model
Waterproof Rating	IP67	Depends on model
Display	Backlit multi-line LCD	Depends on model
Field Measurement	Immersion and portable design	Depends on configuration
Electrode Maintenance	Tool-free replacement	Depends on model
Automatic Power-Off	5 minutes	Depends on model

Instrument Configuration
The OK-SJ1 integrates the water quality testing components into a portable case. The handheld tester provides conductivity, TDS and salinity measurement functions, while the integrated turbidity meter provides additional water clarity testing capability.
The compact configuration is intended to reduce the number of separate instruments required during field water quality inspection.

FAQ
1. What parameters can the OK-SJ1 measure?
The system integrates conductivity, TDS, salinity and turbidity testing functions.
2. What is the conductivity measurement range?
The conductivity range is 0.0 μS/cm to 20.00 mS/cm, with a minimum resolution of 0.1 μS/cm.
3. What is the TDS measurement range?
The TDS range is 0.0 mg/L (ppm) to 20.00 g/L (ppt).
4. Does the OK-SJ1 provide temperature compensation?
Yes. It supports both automatic and manual temperature compensation, with a temperature compensation range of 0.0–60.0°C.
5. Is the OK-SJ1 waterproof?
Yes. The handheld tester has an IP67 protection rating.
6. Can the conductivity electrode be replaced?
Yes. The electrode can be replaced easily without special tools.
7. What type of conductivity electrode is used?
The instrument uses a Ø13 mm graphite conductivity electrode with K=1.0.
8. How is the instrument powered?
It uses one 1.5V AAA battery and features automatic power-off after 5 minutes without key operation.
9. Is the OK-SJ1 suitable for field testing?
Yes. Its compact handheld design, immersion measurement capability, IP67 protection and battery power make it suitable for portable and outdoor water quality testing.

FAQ
1. What parameters can the OK-SJ1 measure?
The system integrates conductivity, TDS, salinity and turbidity testing functions.
2. What is the conductivity measurement range?
The conductivity range is 0.0 μS/cm to 20.00 mS/cm, with a minimum resolution of 0.1 μS/cm.
3. What is the TDS measurement range?
The TDS range is 0.0 mg/L (ppm) to 20.00 g/L (ppt).
4. Does the OK-SJ1 provide temperature compensation?
Yes. It supports both automatic and manual temperature compensation, with a temperature compensation range of 0.0–60.0°C.
5. Is the OK-SJ1 waterproof?
Yes. The handheld tester has an IP67 protection rating.
6. Can the conductivity electrode be replaced?
Yes. The electrode can be replaced easily without special tools.
7. What type of conductivity electrode is used?
The instrument uses a Ø13 mm graphite conductivity electrode with K=1.0.
8. How is the instrument powered?
It uses one 1.5V AAA battery and features automatic power-off after 5 minutes without key operation.
9. Is the OK-SJ1 suitable for field testing?
Yes. Its compact handheld design, immersion measurement capability, IP67 protection and battery power make it suitable for portable and outdoor water quality testing.