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美國哈希hach售后維修服務熱線：4000688826
本公司是美國PLC電氣技術有限公司中國區維修服務公司，主要負責技術支持和維修服務，我們在工業領域已經立足36年，積累大量的維修經驗和維修備件。本公司竭誠提供化工行業、水處理、工業電爐、工廠弱電工程等自動化工程項目設計、安裝、調試以技術改造等服務。同時我公司專業代理環境檢測相關儀器，目前公司擁有德國WTW、德國MN、美國哈希、美國優佰達、英國牛津等水質與重金屬儀器代理資質。幾年以來在產品研究、銷售和技術服務方面不懈努力，進行了大量深入細致的工作，公司的儀器遍布國內的著名企業、大學、權威研究機構和環境檢測部門，業務遍及全國各地。公司依靠雄厚的經濟實力，良好的管理體系，在同行業樹立了良好的口碑，取得了突出的成績。
便攜式溶解氧測定儀適用于測定溶解在水中的氧氣濃度或飽和度。LDO™便攜式溶氧儀和LDOTM便攜式溶氧儀是哈希公司采用最新技術開發而成，適合于實驗室和野外測試的 兩款便攜式儀器。
便攜式溶解氧測定儀: 溶解氧測量新技術－溶解氧的熒光法測量
HACH公司便攜式溶解氧測定儀的LDO溶解氧傳感器被一層熒光物質所覆蓋，當 LED 光源發出的藍光照 射到傳感器表面的熒光物質時，熒光物質受到激發釋放出紅光。從發出藍光到釋放出紅光 的這段時間被記錄下來。水中的氧氣濃度越高，釋放紅光的時間就越短。在紅光釋放時間 與溶解氧濃度之間建立相關性，便攜式溶解氧測定儀通過測定紅光的釋放時間計算出溶解氧濃度，進而在 屏幕中直接顯示出溶解氧濃度。
在測量溶解氧的技術方面，帶有LDO探頭的便攜式溶解氧測定儀與傳統的基于電流或極譜法 的溶氧儀相比，具有諸多優點：
(1)無需極化：在測量溶解氧時，LDO溶解氧溶解氧測定儀探頭不需要極化時間。傳統溶解氧探頭在使用前通常有極化過程。
(2)無需校準：LDO溶解氧溶解氧測定儀探頭在出廠前已經校準， 因此用戶在使用時無需校準，可直接測量溶解氧濃度。而傳統的溶解氧儀在使用時，通常有校準步驟，校準通過后，方可進行溶解氧的測定。
(3)維護量低：LDO 溶解氧溶解氧測定儀探頭為無膜式探頭，無需更換膜 組件、無需填充電解液，維護量大大降低，既節省了時間 又降低了用戶的維護成本。
(4)抗干擾能力強：LDO探頭為無膜式探頭，因此不受典型廢水中化學物質的干擾。
(5)耐用的熒光帽：熒光帽在被刮蹭或部分污染的情況下，仍能保持其準確度，清洗方便。
溶解氧溶解氧測定儀的技術指標：
溶解氧溶解氧測定儀的技術參數
測量量程：0～20mg/L(ppm)；0～200%飽和度
分辨率：0.01mg/L
自動的數據管理
Your unit starts its journey on Conveyor #1, where it is transported from receiving to the Repair Entry Team.
All documents that arrive with your repair are scanned into our computerized “Spectrum” tracking system. 
Your unit is photographed and a digital image is attached to the record. 
Your unit is barcoded so that it can be
tracked through the repair process. 
A free repair evaluation starts at the end of Conveyor #2. Engineers completely review your unit to determine the proper repair process and testing to be utilized by the Technical Teams. 
When your unit reaches Conveyor #3, the service writer contacts you with a repair estimate and delivery schedule. Upon your approval, the unit will be repaired. 
Your unit moves to the Technician Service Area via a drop table for immediate assignment. 
Any conformal coating/clear coat is removed via CCR 2000 workstations. 
No expense has been spared. The latest technology is used to determine
component failure. 
With a parts inventory of over 750,000 pieces at a value of $2.2 million, Radwell
technicians will have what they need to complete your repair at industry leading speed. 
A pneumatic tube system delivers parts from inventory directly to the technician. 
Highly qualified technicians replace components and complete preventive maintenance. 
More than 675 documented test fixtures are available for final testing and inspection of your unit. 
Example: Diagnostic and performance testing is completed on all servo motors repaired by Radwell’s Technical Teams. 
Units requiring NIST traceability can be calibrated in our Cal Lab. 
Quality Assurance has the final look at all repairs. When they are satisfied with the repair and all paperwork is correct, the unit will enter shipping via Conveyor #4. 
The unit arrives in shipping via a drop table and is automatically assigned the type of custom packaging required. 
Spray Foam machines are used to protect larger pieces of equipment. Custom Radwell boxes are available with or without Radwell logos. 
Smaller units are skin packed and boxed in special perforated cartons. Skin packed units are rugged and allow for secure shipments. 
Believe it or not, all of the above has been completed within 5 days of the order. Your unit takes its final ride at Radwell on Conveyor #5 and is ready for immediate shipment
