دليل مستخدم جهاز قياس الفلورايد Extech FL700

1. المقدمة

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. معلومات السلامة

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.
• يحفظ بعيدًا عن متناول الأطفال.

3. انتهى المنتجview

The Extech FL700 Fluoride Meter is a compact and user-friendly device. Key components and features are outlined below:

المميزات الرئيسية:

• معايرة نقطتين: Ensures accurate measurements across the fluoride range.
• تخزين الذاكرة: Stores up to 25 labeled readings for later review.
• Field or lab testing: Designed for versatile use in various environments.
• استجابة سريعة: Provides fluoride measurements in less than 1 minute.
• Large dual LCD: Simultaneously displays ppm (or mg/L) and temperature with a bargraph.

4. الإعداد

4.1. تركيب البطارية

The Extech FL700 requires four 3V button batteries (included). To install or replace batteries:

1. Twist off the battery compartment cap located at the top of the meter.
2. Insert the four 3V button batteries, ensuring correct polarity as indicated inside the compartment.
3. أعد تركيب غطاء حجرة البطارية وقم بلفه لتثبيته.

4.2. التحضير الأولي

Before first use or after prolonged storage, prepare the electrode:

1. Remove the sensor cap from the electrode tip.
2. Rinse the electrode tip with distilled water.
3. Condition the electrode by immersing it in a fluoride standard solution (e.g., 1 ppm or 10 ppm) for approximately 15-30 minutes.

5. تعليمات التشغيل

5.1. تشغيل / إيقاف التشغيل

اضغط على تشغيل/إيقاف زر لتشغيل أو إيقاف العداد.

5.2. Calibration (Two-Point)

Accurate calibration is crucial for reliable measurements. The FL700 supports two-point calibration.

1. 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.
2. اشطف القطب بالماء المقطر وجففه.
3. Immerse the electrode into the first standard solution.
4. اضغط مع الاستمرار على كال / استرجاع button until 'CAL' appears on the display. The meter will automatically recognize the standard and calibrate. Wait for the reading to stabilize.
5. Rinse the electrode again and immerse it into the second standard solution.
6. اضغط مع الاستمرار على كال / استرجاع button again. The meter will complete the two-point calibration.
7. The meter is now calibrated and ready for measurement.

5.3. أخذ القياس

To measure fluoride concentration in a sampعلى:

1. Ensure the meter is calibrated.
2. اشطف القطب بالماء المقطر وجففه.
3. 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.
4. Immerse the electrode tip into the prepared sample solution. Ensure the tip is fully submerged.
5. 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.
6. To hold the current reading, press the الوضع / الانتظار اضغط على الزر مرة أخرى لتحريره.

5.4. Recalling Stored Readings

The meter can store up to 25 labeled readings.

• To recall stored readings, press the كال / استرجاع button briefly when not in calibration mode.
• استخدم الوضع / الانتظار button to scroll through the stored readings.

6. الصيانة

6.1. تنظيف القطب الكهربائي

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. التخزين

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.
• قم بتخزين العداد في مكان بارد وجاف.

6.3. استبدال البطارية

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. استكشاف الأخطاء وإصلاحها

8. المواصفات

9. معلومات الضمان

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. الدعم

For technical support, service, or additional information, please visit the official Extech webيمكنك أيضًا زيارة موقعهم الإلكتروني أو الاتصال بقسم خدمة العملاء. كما يمكنك العثور على مزيد من المعلومات والمنتجات على الموقع الإلكتروني. متجر إكستك على أمازون.