Measuring range:

1.DO9100 is a precision meter for measuring dissolved oxygen and temperature. The built-in microcomputer processor can calculate and compensate all measurement data related to dissolved oxygen and temperature. The shell of this instrument is waterproof, and the waterproof grade: IP67
2.2. This dissolved oxygen meter has two measurement units: % and mg/L.
3.The dissolved oxygen probe is a film with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable film separates the measured solution from the sensing electrode, but allows oxygen to pass through the film to react , The solubility can be measured.

1. Dissolved oxygen: (0.0～40.0)mg/L 0.0-300.0%
2. Temperature: (0 ~ 40) °C 32.0-104.0°F
Precision:
1. Dissolved oxygen: ±1.5F.S.
2. Temperature: ±0.5°C
Resolution:
Dissolved oxygen:0.1MG/L
Oxygen concentration:0.1%
Temperature: 0.1°C 0.1°F
Automatic temperature compensation range: 0-40°C
Use environment: 0.1-40.0°C RH max: 90%
Size:183*37*37mm/7.2*1.5*1.5in 80g
Power supply: 1.5V button battery (4)
LCD
Automatic temperature compensation, fast response time
Portable, easy to carry
Instrument keyboard description:
Key Function
(switch) power on and off.
Calibration steps and use steps: see instructions for details
Restore factory settings:
When the instrument is turned on, press and hold the switch button for 5 seconds, release the button and the screen will show "----" to restore factory settings successfully

How to use and correct the procedure:

1.CAL calibration key (long press 5 seconds to enter the calibration interface)

2.HOLD lock/hold key, Fahrenheit/Celsius temperature conversion key.

3.DO9100 pen-type intelligent dissolved oxygen analyzer (hereinafter referred to as the instrument) is mainly designed to facilitate the user to carry on-site operation. The instrument can be divided into two parts: sensor and electronic unit. The sensor uses a polarographic film-type dissolved oxygen electrode. The electronic unit is composed of high integrated circuits. The instrument uses a dot-matrix liquid crystal display to display dissolved oxygen values and temperatures.

Packing List:

1 x Dissolved Oxygen Meter

1 x English Instruction Manual

10 set Zero oxygen reagent

Shen Zhen YIERYI Technology Co., Ltd established in 2012 and are located in Economic Development Area, Shen Zhen City, Guang Dong Province, enjoying an ideal geographic position with convenient facilities, excellent craftsmanship and complete testing methods.
We are a professional manufacturer of high quality Portable Refractometer for sugar,brix,Alcohol,Salinity,milk wine,Engine Fluid Glycol and water ph meter soil meter meter .etc.. Our Factory have attained ISO9001:2008 Quality System Certification. Our products have ROHS and CE Certification, our other some products also have type patent.

We started exporting from 2013, At present, our factory sells our products to Europe, America, Southeast Asia and the Mid-East. Our annual sales volume are $1 Million - $2.5 Million. Our products are also sold to different big and medium cities in China and are warmly welcomed by our customers.
Our factory always attaches great importance to technological innovation and has been recruiting professional staff regularly. We also cooperate with research institutions to develop new products. To meet customers' high level needs, we always adhere to the enterprise spirit of "Unity, Industriousness, Exploration and Innovation". To reward our customers through our persistent pursuit for high quality products and first-class services, we wish to cooperate with customers from various circles to create a prosperous future together.