1. Introduzione
The Hanna Instruments HI96701 is a portable photometer designed for the accurate measurement of free chlorine (Cl2) content in water samples. This device provides precise readings within the 0.00 to 5.00 mg/L (ppm) range, making it an essential tool for various applications including water treatment, environmental monitoring, and quality control. This manual provides detailed instructions for the proper setup, operation, maintenance, and troubleshooting of your HI96701 photometer to ensure optimal performance and longevity.
2. Informazioni sulla sicurezza
Please read all safety information before operating the HI96701 photometer. Failure to do so may result in injury or damage to the instrument.
- Always handle chemical reagents with care. Refer to the Material Safety Data Sheets (MSDS) for specific reagent safety information.
- Wear appropriate personal protective equipment (PPE), such as gloves and eye protection, when handling reagents.
- Do not immerse the photometer in water or other liquids. The instrument is designed for splash resistance but is not waterproof.
- Assicurarsi che il vano batteria sia chiuso saldamente per impedire l'ingresso di umidità.
- Smaltire i reagenti usati eamples according to local environmental regulations.
- Keep the instrument away from strong magnetic fields and extreme temperatures.
3. Prodotto finitoview
The HI96701 photometer is designed for ease of use and accurate measurements. Familiarize yourself with the components shown below.
Figure 1: Hanna Instruments HI96701 Portable Free Chlorine Photometer. This image displays the blue handheld device with a digital LCD screen showing a reading of '0.80'. Below the screen are several control buttons, including 'ON/OFF', 'ZERO/CAL', and 'READ'. A sample cuvette holder is visible on the right side, covered by a black cap.
Componenti chiave:
- Schermo LCD: Shows measurement readings, messages, and status indicators.
- Pulsante ON/OFF: Powers the instrument on or off.
- ZERO/CAL Button: Used to zero the instrument with a blank sample or for calibration.
- Pulsante LEGGI: Initiates the measurement of a treated samplui.
- Cuvette Holder: Compartment for inserting the glass cuvette containing the samplui.
- Vano batteria: Located on the underside, holds the power source.
4. Impostazione
Before first use, follow these steps to prepare your HI96701 photometer.
- Installazione della batteria:
- Locate the battery compartment cover on the bottom of the photometer.
- Rimuovere il coperchio facendolo scorrere o svitandolo.
- Insert a 9V alkaline battery, ensuring correct polarity (+/-).
- Riposizionare saldamente il coperchio del vano batteria.
- Accensione iniziale:
- Premere il tasto ACCESO/SPENTO pulsante per accendere lo strumento.
- The display will show all segments for a few seconds, followed by the model number and then '— — —'.
- Cuvette Preparation:
- Ensure cuvettes are clean and free from scratches or fingerprints. Use a lint-free cloth to wipe the outside of the cuvette before insertion.
- Avoid touching the optical surfaces of the cuvette.
5. Istruzioni per l'uso
Follow these steps for accurate free chlorine measurements.
- Accensione: Premere il tasto ACCESO/SPENTO button to turn on the photometer.
- Zeroing the Instrument:
- Fill a clean glass cuvette with 10 mL of unreacted water sample (the blank).
- Insert the cuvette into the holder, ensuring the cap is securely closed.
- Premere il tasto ZERO/CAL button. The display will show 'SIP' (Sampling In Progress) and then '0.00'. The instrument is now zeroed.
- Sampla Preparazione:
- Remove the blank cuvette.
- Add the appropriate free chlorine reagent (e.g., DPD Free Chlorine Reagent) to a new 10 mL water sample in a clean cuvette. Refer to the reagent instructions for exact quantities and mixing procedures.
- Cap the cuvette and gently shake to mix.
- Wait for the specified reaction time (typically 1 minute for free chlorine).
- Misurazione:
- Insert the reacted sample cuvette into the holder, ensuring the cap is securely closed.
- Premere il tasto LEGGERE button. The display will show 'SIP' and then the free chlorine concentration in mg/L (ppm).
- Spegni: Premere il tasto ACCESO/SPENTO button to turn off the photometer after use.
6. Manutenzione
Proper maintenance ensures the longevity and accuracy of your HI96701 photometer.
- Cleaning the Cuvette: Always clean cuvettes thoroughly after each use with deionized water and a mild detergent, then rinse well. Dry with a lint-free cloth.
- Pulizia dello strumento: Wipe the exterior of the photometer with a soft, damp panno. Non usare detergenti abrasivi o solventi.
- Sostituzione della batteria: Replace the 9V battery when the low battery indicator appears on the display. Always dispose of used batteries responsibly.
- Magazzinaggio: Store the photometer in a cool, dry place away from direct sunlight and extreme temperatures. Keep the cuvette holder clean and covered when not in use.
- Reagent Storage: Store reagents according to their specific instructions to maintain their effectiveness.
7. Risoluzione Dei Problemi
Fare riferimento a questa sezione per i problemi più comuni e le relative soluzioni.
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Lo strumento non si accende. | Batteria scarica o installata in modo errato. | Check battery polarity; replace with a new 9V alkaline battery. |
| Erratic or inconsistent readings. | Dirty cuvette, air bubbles, scratched cuvette, incorrect zeroing. | Clean cuvette, remove air bubbles, use a new cuvette, re-zero the instrument with a fresh blank. |
| Display shows '---' after pressing READ. | Sample concentration is outside the measurement range. | Diluire la sample if concentration is too high, or ensure proper reagent addition if too low. |
| Low battery indicator appears. | La batteria è scarica. | Sostituire la batteria da 9V. |
8. Specifiche
- Allineare: 0.00 to 5.00 mg/L (ppm) Free Chlorine (Cl2)
- Risoluzione: 0.01 mg/L (0.00 to 3.50 mg/L); 0.10 mg/L (above 3.50 mg/L)
- Precisione: ±0.03 mg/L ±3% of reading @ 25°C
- Sorgente luminosa: tungsteno lamp with narrow band interference filter @ 525 nm
- Rilevatore di luce: Fotocellula al silicio
- Metodo: Adaptation of the EPA DPD method 330.5 and Standard Method 4500-Cl G.
- Ambiente: Da 0 a 50°C (da 32 a 122°F); max 95% RH senza condensa
- Tipo di batteria: 1 x 9 V alcaline
- Spegnimento automatico: Dopo 10 minuti di non utilizzo
- Dimensioni: 192 x 104 x 69 mm (7.5 x 4.1 x 2.7")
- Peso: 360 g (12.7 once)
9. Garanzia e supporto
The Hanna Instruments HI96701 photometer is warranted for a period of two years against defects in workmanship and materials when used for its intended purpose and maintained according to instructions. Reagents are not covered by this warranty.
For technical support, service, or warranty claims, please contact Hanna Instruments customer service. Visit the official Hanna Instruments websito per informazioni di contatto e risorse aggiuntive.
Websito: www.hannainst.com
