Handheld multi parameter measuring instrument LH-E300
LH-E300 is a portable multi parameter water quality analyzer that uses digital electrodes to detect pH, dissolved oxygen, conductivity, salinity, and other parameters ORP、TDS、SAL、 8 indicators including temperature and more than 10 ion indicators, suitable for various harsh working environments; Built in high-capacity storage space, each indicator can store 10000 historical data, equipped with LHOS operating system, built-in high-capacity rechargeable lithium battery, can work in the field for a long time; The instrument has stable performance, accurate measurement, wide measurement range, powerful functions, and simple operation. It is a handheld multi parameter detection instrument that integrates detection, monitoring, and data management for users in the field and laboratory.
1) Handheld mini host, supporting pH, dissolved oxygen, conductivity, salinity ORP、TDS、SAL、 Rapid detection of 8 temperature indicators and plasma of fluoride, chlorine, bromine, iodine, calcium, potassium, sodium, nitrate, and ammonium to meet the water quality testing needs in various fields;
2) Built in real-time reading, timing reading, and interval reading three measurement modes for reading, which can be flexibly selected according to the detection scenario and requirements;
3) Adopting fully digital electrodes, connecting electrodes for automatic intelligent recognition, supporting automatic temperature compensation, effectively avoiding the influence of environmental temperature, improving measurement accuracy and stability;
4) Support WiFi and IoT applications, enabling users to remotely monitor and control instruments anytime, anywhere. Data can be uploaded to cloud servers or accessed to user databases for querying and big data applications;
5) The host adopts a 4.3-inch touch screen and a self-developed LHOS operating system, with a simple interface, easy operation, and high degree of intelligence;
6) The host is IP67 waterproof, so there is no need to worry about moisture, dampness, rain, splashing, short-term immersion and other issues during outdoor testing, effectively improving the durability and long-term reliability of the instrument;
7) Intelligent power-saving, supporting sleep time setting, automatically entering sleep mode if there is no operation after the specified time, avoiding power waste and improving the service life of the instrument;
8) Built in hidden embedded desktop stand and detachable wristband, both for laboratory placement and outdoor handheld use, are very convenient;
9) Each testing item has a corresponding calibration mode, which supports rapid on-site calibration to ensure data accuracy and long-term stability;
10) Each project can independently store 10000 pieces of data, which can be freely filtered and viewed. It supports USB transfer and export, as well as Bluetooth printing (optional);
The instrument is suitable for surface water monitoring, water companies, aquaculture, municipal sewage, food and beverage, industrial wastewater, scientific research institutions, biopharmaceuticals and other industries.
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Instrument name |
Handheld multi parameter measuring instrument |
Instrument model |
LH-E300 |
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Measurement items |
pH、 Dissolved oxygen, conductivity, salinity TDS、ORP、 Temperature and ion concentration |
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Electrode type |
High precision digital detection electrode |
screen size |
4.3 inch touch screen |
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Power supply |
Built in lithium battery and Type-C charging |
Data transmission |
USB |
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Battery capacity |
Built in large capacity lithium battery,7000mA/h |
Data storage |
10000 |
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Printing method |
Optional Bluetooth printer |
Instrument size |
(220×85×38)mm |
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Waterproof rating |
IP67 |
Instrument weight |
478g |
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Ambient temperature |
(5-60)℃ |
Ambient humidity |
Relative humidity ≤ 85% RH (without condensation) |
Detection parameters
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Measurement metrics |
Measurement range |
Measurement accuracy |
Resolution |
Response time |
Temperature compensation |
Calibration method |
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pH |
0-14 |
±0.02 |
0.01 |
≤30S |
(5-60)℃(Automatic) |
3 Point calibration |
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Dissolved oxygen |
0.01-20.00mg/L |
±0.3mg/L |
0.01mg/L |
≤60S |
(5-60)℃(Automatic) |
1 Point calibration |
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Conductivity |
1-2000uS/cm |
±1% |
0.1μS/cm |
≤30S |
(5-60)℃(Automatic) |
1 Point calibration |
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ORP |
-1000-+1000mV |
±1mV |
0.01mV |
≤30S |
(5-60)℃(Automatic) |
1 Point calibration |
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Temperature |
0-100℃ |
(0-60)℃时±0.1℃60℃以上±0.5℃ |
0.01℃ |
≤30S |
---- |
1-3 Point calibration |
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Fluoride ion |
0.2-2000mg/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |
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Chloride ion |
1.8-3500mg/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |
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Bromide ion |
0.4-8000mg/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |
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Iodide ion |
0.05-12700mg/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |
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Calcium ion |
0.04-4000m/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |
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Nitrate ion |
0.6-6200mg/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |
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Ammonium ion |
0.1-1700mg/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |
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Potassium ion |
0.4-3900mg/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |
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Sodium ion |
0.02-2300mg/L |
±10% |
0.1mV |
≤60S |
(5-60)℃(Automatic) |
2 Point calibration |








