Model: LH-C700
Introduction
All testing items are based on national industry standard, and the instrument adopts LIANHUA's self-developed LHOS operating system. The standards are based on COD - "HJ/T399-2007", ammonia nitrogen - "HJ535-2009", total phosphorus - "GB11893-89", and dissolved oxygen - "HJ506-2009". The instrument has powerful detection function, with integrated dual temperature block, digestion and colorimeter are together in one, retains the colorimetric function of the dual diameter rotating tube, and has the on-site law enforcement function of taking photos and videos, making it a powerful assistant for comprehensive law enforcement in the field.
Features
1) Electrode method+spectrophotometry: basically covering all needs of outdoor water quality testing, much convenient;
2) 360 ° rotation colorimetric: supports diameter 25mm and 16mm round tubes for rotation colorimetric, and supports length 10-30mm rectangular cuvette for colorimetric;
3) 720P high-definition camera: Take on-site photos or video recordings to record on-site inspection information;
4) there are 12 pcs of well / positions dual temperature block digestion: Two temperature zones are independently controlled, suitable for multi indicator and batch item detection.
5) Outdoor testing without battery life anxiety: Equipped with a built-in 19.2Ah high-capacity lithium battery, it can last up to 8 hours under comprehensive working condition;
6) Standard curve formulation and calibration: Custom calibration of coefficient curve and sample curve are supported;
7) LHOS operating system: customized based on Android, with a simple and user-friendly interface and powerful data analysis;
8) Digital electrodes are precise and stable: with faster signal transmission and processing efficiency, strong anti-interference ability, and precise measurement values.
Specifications
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Instrument name |
Portable multi-parameter water quality tester |
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Model |
LH-C700 |
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Measuring range |
spectrophotometry method |
COD:(0-15000)mg/L, NH3-N：(0-160)mg/L, TP：(0-100)mg/L, TN：(0-150)mg/L；other parameter....... |
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Electrode method |
pH:(0-14)pH；DO：(0-20)mg/L or (0-200)% saturation EC：(0.01-100)mS/cm；ORP:(-999~999)mV；turbidity：(0-1000)NTU |
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Error |
spectrophotometry method |
≤±5%；other parameter：≤±10% |
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Electrode method |
pH:±0.02pH；DO：±1%；EC：±1%；ORP:±20mV；turbidity：±5% or 0.3NTU |
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Resolution ratio |
spectrophotometry method |
0.001Abs |
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Electrode method |
pH:0.01；DO：0.01；ORP:0.01；turbidity：0.1NTU；EC：0.1μS/cm or 0.01mS/cm |
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Curve No. |
665 |
Repeatability |
≤±3% |
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Colorimetric method |
Φ 16mm/25mm round tube or 10mm/30mm length rectangular cuvette |
Response time |
pH, ORP, turbidity, 5 second. DO, EC, 10 second |
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Electrode line length |
3/5m； |
Parameter switch |
automatic |
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Temp. range |
Room temperature-190℃ |
Temp. error |
<±2℃ |
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Temperature field uniformity |
≤2℃ |
Digestion mode |
10 preset modes+5 custom modes |
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Timing range |
1-600 min |
Timing accuracy |
0.2 seconds/hour |
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Display screen |
7 inches; 1024 x 600 touch screen |
Camera resolution |
1080 x 720 (720P full HD) |
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Data storage |
Data: 50 million sets/video: 1000 minutes (60 seconds per video) |
Battery capacity |
24V 19.2Ah |
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Charging method |
AC 220V |
Printer |
Thermal line printer |
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Host weight |
10.5kg |
Host size |
(430×345×188)mm |
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Weight of electrode box |
6kg |
Size of electrode box |
(479×387×155)mm |
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Ambient temperature |
(5-40)℃ |
Environmental humidity |
≤85%(non-condensing ) |
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Voltage |
24V |
Power |
180W |
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Test parameter
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No. |
Parameter |
Analysis method |
Test range(mg/L) |
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01 |
pH |
Digital electrode method |
0-14pH |
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02 |
Dissolved oxygen |
0-20 |
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03 |
Conductivity |
0.01-100mS/cm |
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04 |
ORP |
-999-999mV |
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05 |
Turbidity |
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0-1000NTU |
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06 |
COD |
Rapid digestion spectrophotometry |
0-15000 |
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07 |
Permanganate index |
Potassium permanganate oxidation spectrophotometry |
0.3-5 |
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08 |
Ammonia nitrogen - Nessler's |
Nessler's reagent spectrophotometry |
0-160(subsection) |
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09 |
Ammonia nitrogen salicylic acid |
Salicylic acid spectrophotometric method |
0.02-50 |
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10 |
Total phosphorus ammonium molybdate |
Ammonium molybdate spectrophotometric method |
0-12(subsection) |
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11 |
Total phosphorus vanadium molybdenum yellow |
Vanadium molybdenum yellow spectrophotometric method |
2-100 |
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12 |
Total nitrogen |
Color changing acid spectrophotometry |
0-150 |
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13 |
Volatile fatty acids |
Esterification spectrophotometry |
20-3600 |
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14 |
Chroma |
Platinum cobalt color series |
0-500Hazen |
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15 |
Suspended solid |
Direct colorimetric method |
0-1000 |
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16 |
Copper |
BCA photometry |
0.02-50 |
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17 |
Iron |
Phenanthroline spectrophotometric method |
0.01-50 |
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18 |
Nickel |
Dimethylglyoxime spectrophotometric method |
0.1-40 |
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19 |
Hexavalent chromium |
Diphenylcarbazide spectrophotometric method |
0.01-10 |
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20 |
Total chromium |
Diphenylcarbazide spectrophotometric method |
0.01-10 |
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21 |
Lead |
Dimethyl phenol orange spectrophotometric method |
0.05-50 |
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22 |
Zinc |
Zinc reagent spectrophotometry |
0.1-10 |
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23 |
Cadmium |
Dithizone spectrophotometric method |
0.1-5 |
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24 |
Manganese |
Potassium periodate spectrophotometric method |
0.01-50 |
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25 |
Silver |
Cadmium reagent 2B spectrophotometric method |
0.01-8 |
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26 |
Antimony |
5-Br-PADAP spectrophotometry |
0.05-12 |
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27 |
Cobalt |
5-Chloro-2- (pyridylazo) -1,3-diaminobenzene spectrophotometric method |
0.05-20 |
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28 |
Nitrate nitrogen |
Color changing acid spectrophotometry |
0.5-250 |
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29 |
Nitrite nitrogen |
Naphthyl ethylenediamine hydrochloride spectrophotometric method |
0.01-6 |
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30 |
Sulfide |
Methylene blue spectrophotometry |
0.02-20 |
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31 |
Sulfate |
Barium chromate spectrophotometric method |
5-2500 |
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32 |
Phosphate |
Ammonium molybdate spectrophotometric method |
0-25 |
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33 |
Fluoride |
Fluorine reagent spectrophotometry |
0.01-12 |
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34 |
Cyanide |
Barbituric acid spectrophotometry |
0.004-5 |
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35 |
Free chlorine |
N-diethyl-1,4-phenylenediamine spectrophotometric method |
0.1-15 |
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36 |
Total chlorine |
N-diethyl-1,4-phenylenediamine spectrophotometric method |
0.1-15 |
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37 |
Chlorine dioxide |
DPD spectrophotometry |
0.1-50 |
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38 |
Ozone |
Indigo spectrophotometry |
0.01-1.25 |
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39 |
Silicon dioxide |
Silicon molybdenum blue spectrophotometry |
0.05-40 |
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40 |
Formaldehyde |
Acetylacetone spectrophotometric method |
0.05-50 |
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41 |
Aniline |
Naphthyl ethylenediamine hydrochloride azo spectrophotometric method |
0.03-20 |
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42 |
Nitrobenzene |
4-Aminoantipyrine spectrophotometric method |
0.01-25 |
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43 |
Volatile phenol |
Diphenylcarbazide spectrophotometric method |
0.01-25 |
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44 |
Anionic surfactants |
Methylene blue spectrophotometry |
0.05-20 |
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45 |
Unsymmetrical dimethylhydrazine |
Sodium aminoferrocyanide spectrophotometric method |
0.1-20 |
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