1. Pengenalan dan Lebihview
The Hach DR 900 Multiparameter Handheld Colorimeter is a portable, robust instrument designed for comprehensive water testing. It supports over 90 colorimetric parameters, making it a versatile tool for various analytical needs. Its waterproof, dustproof, and shock-resistant design ensures reliable performance in diverse field conditions.

Figure 1: The Hach DR 900 Multiparameter Handheld Colorimeter, a compact and durable device for water quality analysis.
2. Ciri-ciri Utama
- Your Favorites at Your Fingertips: Easily access frequently used tests.
- Field Ready in Every Way Possible: Designed for durability and reliability in challenging environments.
- Antara Muka Pengguna Intuitif: Simple navigation and operation for efficient testing.
- Simple Data Communication: Facilitates easy transfer of measurement data.
- Satisfies Your Core Testing Needs: Comprehensive parameter support for diverse applications.
3. Persediaan
Before initial use, ensure the device is properly prepared.
3.1 Pemasangan Bateri
The DR 900 requires 4 AA batteries for operation. To install or replace batteries:
- Cari penutup petak bateri di bahagian belakang peranti.
- Buka penutup.
- Masukkan 4 bateri AA, pastikan kekutuban yang betul seperti yang ditunjukkan di dalam petak.
- Securely close the battery compartment cover to maintain the device's waterproof integrity.
3.2 Hidupkan Kuasa Awal
Press and hold the power button (usually located at the bottom center of the keypad) until the display illuminates. The device will perform a brief self-check before displaying the main measurement screen.

Figure 2: The Hach DR 900 handheld colorimeter, demonstrating its compact size and user-friendly button layout for easy operation.
4. Arahan Operasi
The DR 900 is designed for straightforward operation, allowing users to quickly perform various water quality tests.
4.1 Menavigasi Antara Muka
Use the directional arrow keys to navigate through menus and select options on the display. The 'Select' button (often the center button of the directional pad) confirms choices, and the 'Back' button (usually a dedicated button) returns to the previous screen.

Figure 3: The DR 900 displaying a measurement result, indicating its capability for precise readings like Chemical Oxygen Demand (COD).
4.2 Performing a Measurement
Specific measurement procedures vary by parameter. Generally, the process involves:
- Select the desired test parameter from the "All Programs" or "Favorites/User Programs" menu.
- Sediakan s andaample according to the specific test method (e.g., adding reagents).
- Masukkan s yang telah disediakanample vial into the sample petak.
- Press the 'Zero' button to calibrate the instrument with a blank sample (if required by the method).
- Press the 'Read' button to initiate the measurement. The result will be displayed on the screen.

Figure 4: The DR 900 shown with two sample vials, illustrating the readiness for sample insertion and testing.
4.3 Data Logging and Communication
The DR 900 allows for data logging of measurements. Data can be transferred via USB for further analysis and record-keeping. Refer to the detailed user manual for instructions on data management and communication protocols.

Figure 5: A user operating the Hach DR 900 in a professional environment, highlighting its suitability for industrial applications.
5. Penyelenggaraan
Proper maintenance ensures the longevity and accuracy of your DR 900 Colorimeter.
5.1 Pembersihan
Lap bahagian luar peranti dengan iklanamp cloth. Do not use abrasive cleaners or solvents. Ensure the sample compartment is clean and free of debris before each measurement.
5.2 Penyimpanan
Simpan peranti di tempat yang sejuk dan kering jauh dari cahaya matahari langsung dan suhu yang melampau. Jika menyimpan untuk tempoh yang lama, keluarkan bateri untuk mengelakkan kebocoran.
6. Penyelesaian masalah
This section provides general guidance for common issues. For detailed troubleshooting, refer to the comprehensive user manual provided with your device.
6.1 Peranti Tidak Dihidupkan
- Periksa pemasangan bateri dan pastikan kekutuban yang betul.
- Gantikan bateri lama atau yang telah kehabisan bateri dengan bateri AA yang baharu.
6.2 Bacaan Tidak Tepat
- Memastikan sample vials are clean and free of scratches or fingerprints.
- Verify that the correct test parameter and method are selected.
- Confirm that reagents are fresh and properly prepared.
- Perform a zero calibration with a blank sample as per the method instructions.
7. Spesifikasi
| Atribut | Perincian |
|---|---|
| Nombor Model | 9385100 |
| Pengeluar | SYARIKAT HACH |
| Dimensi Pakej | 12 x 9 x 6 inci |
| Berat Barang | 1 paun |
| Bateri Diperlukan | 4 bateri AA |
| Tarikh Tersedia Pertama | 28 Ogos 2014 |
| Nombor Stok Nasional | 6630-01-623-0976 |
8. Waranti dan Sokongan
For warranty information, technical support, or service inquiries, please contact HACH Company directly or visit their official website. Keep your purchase receipt and product serial number handy for faster assistance.
You can find more information about HACH products and support on the HACH Store on Amazon.





