01.獨(dú)立雙光路無干涉系統(tǒng)
具有獨(dú)立雙光路無干涉系統(tǒng)，可測定高低量程COD，也可測定氨氮。還同時(shí)支持皿比色和管比色兩種比色方式；
Having no independent dual optical interferometer system,Determination of low range COD, ammonia can be measured nitrogen. Also supports pan and colorimetric colorimetric tube two match color mode;
02.濃度直讀
作為的COD氨氮雙參數(shù)測定儀，配備8種預(yù)先編程的曲線，可濃度直讀，測量結(jié)果更；
As a professional COD Parameters measured ammonia double given instrument, equipped with 8 kinds of pre-programmed curve, the concentration and straight Read more precise measurement results;
03.5.6英寸彩色觸摸屏
直觀的菜單導(dǎo)航系統(tǒng)以及5.6英吋的彩色觸摸屏，使得操作簡便可視;
Intuitive menu navigation system and 5.6 inches color touch screen makes operation easy visualization;
04.大容量存儲
具有數(shù)據(jù)存儲功能，可存儲12000組數(shù)據(jù)，并能自由查看；
Has a data storage function, can store 12000 group data, and can freely view;
05.標(biāo)配消解儀
標(biāo)配消解儀，消解儀型號可選，對水樣進(jìn)行消解;
Standard digester, digestion device models available on water sample digestion;
06.配備耗材試劑
配備完善的耗材試劑，實(shí)驗(yàn)工作方便快捷，測量更加簡單、準(zhǔn)確；
Equipped professional supplies reagents, testing of work they fast, simple measurement is more accurate;
07.自備校準(zhǔn)功能
儀器自備校準(zhǔn)功能，可根據(jù)標(biāo)準(zhǔn)樣品計(jì)算并存儲曲線，無需手動制作曲線;
Instrument self calibration function, according to the standard sample Curve calculated and stored, without having to manually make curve;
08.自帶打印機(jī)
自帶打印機(jī)，可打印當(dāng)前數(shù)據(jù)及存儲的歷史數(shù)據(jù)；
Comes with the printer, you can print the current data and historical data storage;
09.傳輸數(shù)據(jù)
配備USB接口和紅外傳輸功能，可向計(jì)算機(jī)傳輸存儲的歷史數(shù)據(jù);
Equipped with USB interface and infrared transmission function, historical data transfer to the computer store;
10.自主設(shè)計(jì)機(jī)殼
采用自主設(shè)計(jì)的ABS工程塑料注塑外殼，整機(jī)美觀大方；
Using self-designed ABS plastic injection molding shell, nice machine;
11.全中文模式
采用全中文操作模式，符合日常操作習(xí)慣，更便于操作掌握;
All-Chinese mode of operation, in line with the daily operation as a habit, easier to operate grasp;
主機(jī)參數(shù)一覽表
| 儀器名稱 | 多參數(shù)水質(zhì)測定儀 | 儀器型號 | LH-3B |
| 測定項(xiàng)目 | COD | 氨氮 | 總磷 |
| 示值誤差 | COD≤50mg/L,誤差≤±8％ COD>50mg/L,誤差≤± 5％ | 誤差≤±5％ | 誤差≤±5％ |
| 測定時(shí)間 | 20分鐘 | 10-15分鐘 | 35-50分鐘 |
| 批處理量 | 25支水樣 | 20支水樣（可擴(kuò)展） | 25支水樣 |
| 重復(fù)性 | ≤±2％ | ≤±2％ | ≤±2％ |
| 光源壽命 | 10萬小時(shí) | ||
| 穩(wěn)定性 | ＜0.005A | ||
| 抗氯干擾 | [Cl-]﹤1000mg/L無影響 [Cl-]﹤4000mg/L(可選) | — | — |
| 存儲數(shù)據(jù) | 1.2萬個(gè) | ||
| 曲線數(shù)量 | 240條（180條標(biāo)準(zhǔn)曲線，60條擬合曲線） | ||
物理參數(shù)一覽表
| 儀器型號 | LH-3B | LH-25A | |
| 顯示屏 | 5.6吋高清彩色液晶觸摸屏 | 3.5吋高清彩色液晶屏 | |
| 操作界面 | 全中文顯示 | ||
| 比色方式 | 比色皿、比色管 | — | |
| 打印機(jī) | 熱敏行式打印機(jī) | — | |
| 數(shù)據(jù)通訊 | USB接口/紅外（可選） | — | |
| 額定電壓 | AC220V±10%/50Hz | — | |
| 額定功率 | 20W | 900W | |
| 尺寸 | 350×250×159mm | 340×240×214mm | |
| 重量 | 4.0kg | 6.2kg | |
