Portable Dissolved Oxygen DO meters

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LH-D9 is a new type of waterproof water treatment instrument that satisfies the demand of most users with a high rate between price and performance.

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Hangzhou Lohand Biological Technology Co.,Ltd

Zhejiang, China

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Description
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Portable Dissolved Oxygen DO meters Calibration
Calibration
Turn on the meter or return to the Measurement Mode
Select % Mode and Immerse the DO probe in the zero-oxygen solution until READY shows.(Get high accuracy, please immerse the probe for 3min or longer.
The next steps must be performed only when the expectation value will be below 5%.)
Press MODE a few times until the Calibrating is flashing on the Second Display, press HOLD/SET to enter Calibration Mode. (Calibrating stop flashing)
The meter will automatically recognize the standard solution and automatic calibration. During this process, the calibration value will be shown on the Second Display.
After Calibration, the meter automatically returns to Measurement Mode.
Portable Dissolved Oxygen DO meters Technical Data:

DO meter
Mode	Saturation%	Oxygen (Mg/L)	Temperature
Range	0 to 199.9	0~19.99	0.0-50.0℃(32-122℉)
resolution	0.1	0.01	0.1℉ (0.1℃)
Accuracy	±1.5% FS	±1.5% FS	±0.9℉(±0.5℃)
Responding Time	1min	1min	1min
Calibration	At most 2 points
Temperature Compensation	Auto (ATC) from 32-122℉ or 0-50℃
Operating Temperature	32-122℉(0~50℃)
Battery	2*AA
Probe	Plastic electrode