How to do calibration for Smart Sensor Digital Dissolved Oxygen detector ?here is video 2/2

SMART SENSOR Digital Dissolved Oxygen Detector Dissolved Oxygen Meter Portable Water Quality Tester Dissolved Oxygen Analyzer Digital Dissolved Oxygen Meter
Item link: https://www.gvda-instrument.com/analy...
Want to know whether the dissolved oxygen value of water is up to the standard? If so, this pen-type dissolved oxygen meter is what you need. Designed and made with imported components and sensor with high sensitivity and accuracy. Dissolved Oxygen Meter is widely applied in industry, electrical and agriculture, medicine, food industry, quality of drinking water, etc.

Product Features
Test the DO(dissolved oxygen) value and temperature(℃/℉) of water.
Large battery capacity, bulit-in 3.7V/1000mAh lithium battery.
Pen-type intelligent dissolved oxygen analyzer, portable and easy to carry.
Facilitate the user to carry on-site operation to display dissolved oxygen values and temperatures.
Pocket size, lightweight with backlight & large LCD display for clear and easy reading.
ATC function (automatic temperature compensation), fast response time and automatic calibration.
Apply in soil-free growing, aquarium, swimming pools, freshwater culture, mariculture, beverage factory, wastewater treatment plant, laboratory, etc.

NOTE: reagent Na2SO3 and CoCl2 are NOT included! Customers can buy the reagent by themselves.



Product Specification

Material: ABS Plastic
Item Name: Pen Type Dissolved Oxygen Meter
Display: Large LCD Display with Switchable Backlight
Range: Dissolved Oxygen: 0.00 to 20.00 mg/L
Temperature: 0℃ ～ 40℃ (32.0℉ ～ 104℉)
Response Time: ＜ 30 seconds
Resolution: Dissolved Oxygen: 0.01 mg/L
Temperature: 0.1℃(0.2℉)
Accuracy: Dissolved Oxygen: ±0.4 mg/L
Temperature: ±1℃
Salinity Compensation: YES(ppt)
Pressure Compensation: YES(mmHg/KPa)
Automatic Temperature Compensation: 0℃ ～ 40℃
Working Temperature: 0℃ ～ 40℃ (32℉ ～ 104℉)
Working Humidity: ≤85%RH
Power: 1* 3.7V/1000mAh lithium battery
Charging limited voltage: 4.2V
Auto Power off: 5 Minutes without any operation
Data Hold: YES
Low Battery Indication: YES
Temperature Unit: ℃/℉ Switchable
Item Size: Approx. 140 * 43 * 43mm / 5.5 * 1.7 * 1.7in
Item Weight: Approx. 132g / 4.6oz
Package Size: Approx. 24.5 * 9 * 5.3cm / 9.6 * 3.5 * 2.1in
Package Weight: Approx. 250g / 8.8oz



Package List:

1 * Dissolved Oxygen Meter
3 * Spare Probe Protective Cover
1 * Storage Bag
1 * User Manual
1* Electrolyte