1. บทนำ
This manual provides detailed instructions for the proper use, calibration, and maintenance of your Geko G02662 Freezing Point Refractometer. This precision optical instrument is designed to measure the freezing point of automotive coolants (ethylene glycol and propylene glycol based) and battery fluid condition. Please read this manual thoroughly before operating the device to ensure accurate results and prolong its lifespan.
2. ข้อมูลด้านความปลอดภัย
- Always handle the refractometer with care. Avoid dropping or subjecting it to strong impacts.
- ห้ามจุ่มเครื่องมือลงในน้ำหรือของเหลวอื่นๆ
- Avoid direct exposure of the prism to strong light sources, as this may damage the optical components.
- When handling automotive fluids, wear appropriate personal protective equipment (e.g., gloves, eye protection) and follow manufacturer safety guidelines for the fluids being tested.
- เก็บเครื่องดนตรีให้พ้นมือเด็ก
3. เนื้อหาบรรจุภัณฑ์
ตรวจสอบว่ามีรายการทั้งหมดอยู่ในแพ็คเกจ:
- Geko G02662 Refractometer
- ปิเปต
- Mini-screwdriver (for calibration)
- ผ้าเช็ดทำความสะอาด
- กล่องเก็บของ
- คู่มือการใช้งาน (เอกสารนี้)
4. สินค้าหมดview
Familiarize yourself with the components of the Geko G02662 Refractometer:
รูปที่ 1: ด้านข้าง view of the Geko G02662 Refractometer. This image displays the overall structure of the device, including the eyepiece, main body, and prism assembly.
รูปที่ 2: Close-up of the prism and cover plate. The sample is applied to the main prism, which is then covered by the transparent plate.
รูปที่ 3: View of the eyepiece. The user looks through this end to read the measurement scale.
- เลนส์สายตา: เคยใช้ view the measurement scale. Rotate to adjust focus.
- ด้ามจับยาง: Provides a secure hold.
- เนื้อหาหลัก: Contains the optical system.
- Calibration Screw: Used to adjust the zero point (under a cap).
- ปริซึม: The surface where the sample is placed.
- แผ่นปิด: Covers the sampบนปริซึม
5. การตั้งค่า
Before first use, or if the focus appears blurry:
- Hold the refractometer towards a light source.
- มองผ่านช่องมองภาพ
- Rotate the eyepiece (part 1 in Figure 1) until the scale is clear and in sharp focus.
6. คู่มือการใช้งาน
Follow these steps to take an accurate measurement:
- Clean the Prism: Ensure the prism (part 5) and cover plate (part 6) are clean and dry using the provided cleaning cloth.
- สมัคร สampเลอ: Open the cover plate. Using the pipette, place 2-3 drops of the liquid to be tested onto the main prism.
- Close Cover Plate: Gently close the cover plate so that the liquid spreads evenly across the entire surface of the prism without air bubbles.
- Wait for Temperature Equalization: Allow approximately 30 seconds for the sample to equalize to the instrument's temperature. This is crucial for accurate readings.
- อ่านการวัด: Hold the refractometer towards a light source and look through the eyepiece. The boundary line between the blue and white fields will indicate the measurement on the appropriate scale.
- ทำความสะอาดหลังการใช้งาน: Immediately after each measurement, clean the prism and cover plate thoroughly with a damp cloth, then dry with the cleaning cloth. Failure to do so can lead to inaccurate readings and damage to the prism.
7. การสอบเทียบ
Calibration should be performed before first use, after cleaning, or if you suspect inaccurate readings. Use distilled water for calibration.
- Ensure the refractometer is at room temperature (20°C / 68°F).
- Clean the prism and cover plate thoroughly.
- Place 2-3 drops of น้ำกลั่น onto the prism. Close the cover plate.
- Wait 30 seconds for temperature equalization.
- Look through the eyepiece. The boundary line should align with the 'WATERLINE' or '0' mark on the scale.
- If it does not, use the provided mini-screwdriver to turn the calibration screw (part 4, usually under a small cap) until the boundary line aligns perfectly with the 'WATERLINE' or '0' mark.
- Clean and dry the prism and cover plate.
8. การบำรุงรักษาและการดูแล
- การทำความสะอาด: Always clean the prism and cover plate immediately after use with a soft, damp cloth, then dry with the cleaning cloth. Do not use abrasive materials or solvents.
- พื้นที่จัดเก็บ: Store the refractometer in its protective case in a dry, cool, and dust-free environment when not in use. Avoid direct sunlight or extreme temperatures.
- หลีกเลี่ยงความเสียหาย: Do not touch the prism surface with your fingers or any hard objects.
9 การแก้ไขปัญหา
| ปัญหา | สาเหตุที่เป็นไปได้ | สารละลาย |
|---|---|---|
| Blurry scale | Eyepiece out of focus | หมุนเลนส์ใกล้ตาเพื่อปรับโฟกัส |
| การอ่านที่ไม่ถูกต้อง | Instrument not calibrated; Prism dirty; Insufficient sample; Air bubbles in sample; Temperature difference. | Calibrate the instrument; Clean the prism; Apply sufficient sample (2-3 drops); Ensure no air bubbles; Allow sample to equalize temperature. |
| Boundary line not visible | Insufficient light; Sample too dark/opaque. | Point towards a brighter light source; Ensure sample is clear enough for measurement. |
10. ข้อมูลจำเพาะ
- หมายเลขรุ่น: เกโก้ จี02662
- ผู้ผลิต: บริษัท แฮนด์โลวา จีเอโก
- ขนาดแพ็คเกจ: 35 x 35 x 15 ซม.
- น้ำหนัก: 220 กรัม
- ช่วงการวัด: Typically for Ethylene Glycol, Propylene Glycol, and Battery Fluid (specific scales visible through eyepiece).
- การชดเชยอุณหภูมิอัตโนมัติ (ATC): Yes (for accurate readings regardless of ambient temperature).
11. การรับประกันและการสนับสนุน
For warranty information and technical support, please refer to the documentation provided at the point of purchase or contact your retailer. Keep your purchase receipt as proof of purchase.
