1. Вовед
The Extech FL700 Fluoride Meter is a precision instrument designed for the rapid and accurate measurement of fluoride ions in various aqueous samples, including drinking water. This device integrates a sensing electrode, measurement electronics, and a digital display into a single, portable unit, making it suitable for both field and laboratory applications.
The FL700 provides direct readings of total fluoride concentrations ranging from 9.99 ppm or mg/L down to 0.1 ppm. It features automatic temperature compensation to ensure measurement accuracy across varying environmental conditions.
2. Информации за безбедност
Please read and understand all safety precautions before operating the Extech FL700 Fluoride Meter. Failure to follow these instructions may result in injury or damage to the instrument.
- Always handle the fluoride electrode with care. Avoid touching the sensing element directly.
- When working with TISAB reagent tablets or any chemical solutions, wear appropriate personal protective equipment, including gloves and eye protection.
- Do not immerse the entire meter in liquid. The meter is designed for electrode immersion only.
- Store the meter and reagents in a cool, dry place, away from direct sunlight and extreme temperatures.
- Да се чува подалеку од дофат на деца.
3. Производот завршиview
The Extech FL700 Fluoride Meter is a compact and user-friendly device. Key components and features are outlined below:
Клучни карактеристики:
- Калибрација со две точки: Ensures accurate measurements across the fluoride range.
- Складирање меморија: Stores up to 25 labeled readings for later review.
- Field or lab testing: Designed for versatile use in various environments.
- Fast response: Provides fluoride measurements in less than 1 minute.
- Large dual LCD: Simultaneously displays ppm (or mg/L) and temperature with a bargraph.
4. Поставување
4.1. Инсталација на батерија
The Extech FL700 requires four 3V button batteries (included). To install or replace batteries:
- Одвртете го капачето на преградата за батерии што се наоѓа на горниот дел од мерачот.
- Insert the four 3V button batteries, ensuring correct polarity as indicated inside the compartment.
- Вратете го капачето на преградата за батерии и завртете го за да го прицврстите.
4.2. Почетна подготовка
Before first use or after prolonged storage, prepare the electrode:
- Remove the sensor cap from the electrode tip.
- Rinse the electrode tip with distilled water.
- Condition the electrode by immersing it in a fluoride standard solution (e.g., 1 ppm or 10 ppm) for approximately 15-30 minutes.
5. Упатства за работа
5.1. Вклучување/исклучување
Притиснете го ВКЛУЧЕНО/ИСКЛУЧЕНО копче за вклучување или исклучување на мерачот.
5.2. Calibration (Two-Point)
Accurate calibration is crucial for reliable measurements. The FL700 supports two-point calibration.
- Prepare two fluoride standard solutions, typically one low concentration (e.g., 1 ppm) and one high concentration (e.g., 10 ppm). Ensure the solutions are at a stable temperature.
- Исплакнете ја електродата со дестилирана вода и исушете ја со дамка.
- Immerse the electrode into the first standard solution.
- Притиснете и задржете го ПОВИК / ПОВЕЕ button until 'CAL' appears on the display. The meter will automatically recognize the standard and calibrate. Wait for the reading to stabilize.
- Rinse the electrode again and immerse it into the second standard solution.
- Притиснете и задржете го ПОВИК / ПОВЕЕ button again. The meter will complete the two-point calibration.
- The meter is now calibrated and ready for measurement.
5.3. Преземање мерење
To measure fluoride concentration in a sampле:
- Осигурајте се дека мерачот е калибриран.
- Исплакнете ја електродата со дестилирана вода и исушете ја со дамка.
- Add TISAB (Total Ionic Strength Adjustment Buffer) reagent to your sample according to the reagent instructions. TISAB ensures that the fluoride ions are in a measurable form and minimizes interference.
- Immerse the electrode tip into the prepared sample solution. Ensure the tip is fully submerged.
- Allow the reading to stabilize on the display. The large dual LCD will show the fluoride concentration in ppm (or mg/L) and the temperature.
- To hold the current reading, press the РЕEИМ / ДР HАЕ копче. Притиснете го повторно за да го ослободите.
5.4. Recalling Stored Readings
The meter can store up to 25 labeled readings.
- To recall stored readings, press the ПОВИК / ПОВЕЕ button briefly when not in calibration mode.
- Користете го РЕEИМ / ДР HАЕ button to scroll through the stored readings.
6. Одржување
6.1. Чистење на електроди
Regular cleaning of the electrode ensures optimal performance.
- After each use, rinse the electrode thoroughly with distilled water.
- If the electrode becomes fouled or readings become erratic, clean it with a mild detergent solution or a specialized electrode cleaning solution. Rinse thoroughly with distilled water afterward.
6.2. Складирање
Proper storage extends the life of the electrode and meter.
- Always replace the sensor cap on the electrode tip when not in use. The cap should contain a small amount of electrode storage solution or a fluoride standard solution to keep the membrane hydrated. Do not store dry.
- Чувајте го мерачот на ладно и суво место.
6.3. Замена на батеријата
Replace batteries when the low battery indicator appears on the display or when the meter fails to power on. Refer to Section 4.1 for battery installation instructions.
7 Смена на проблеми
| Проблем | Можна причина | Решение |
|---|---|---|
| Мерачот не се вклучува | Изумрени или неправилно инсталирани батерии | Проверете го поларитетот на батериите; заменете ги батериите. |
| Неправилни или нестабилни отчитувања | Dirty electrode; air bubbles on electrode; insufficient sample volume; expired or incorrect TISAB. | Clean electrode; gently tap electrode to remove bubbles; ensure electrode is fully submerged; check TISAB. |
| Meter fails to calibrate | Incorrect standard solutions; dirty electrode; electrode not conditioned; damaged electrode. | Verify standard concentrations; clean and condition electrode; replace electrode if damaged. |
| Индикатор за слаба батерија | Батериите се ниски. | Replace all four 3V button batteries. |
8. Спецификации
| Спецификација | Детал |
|---|---|
| Производител | Extech |
| Број на дел | FL700 |
| Тежина на ставката | 7.7 унци |
| Димензии на производот | 6.8 x 1.6 x 1.4 инчи |
| Број на модел на ставка | FL700 |
| Батерии | Потребни се 4 литиум метални батерии (вклучени) |
| Стил | FL700 |
| Количина на пакет на ставка | 1 |
| Број на парчиња | 1 |
| Вклучени компоненти | Единица, упатство за употреба |
| Тип на ќелија на батерија | Алкален |
| Прво достапен датум | 15 јули 2008 година |
9. Информации за гаранцијата
The Extech FL700 Fluoride Meter comes with a full one-year warranty on parts and workmanship, unless otherwise specified. This warranty does not cover defects resulting from user actions such as misuse, improper wiring, operation outside of specified parameters, improper maintenance or repair, or unauthorized modification.
10. Поддршка
For technical support, service, or additional information, please visit the official Extech webвеб-страница или контактирајте го нивниот оддел за услуги на клиентите. Можете да најдете повеќе информации и производи на Продавница Extech на Amazon.
