Gain Express Dissolved Oxygen Meter

1. 서론

1.1개 제품 이상view

The Gain Express Dissolved Oxygen Meter is a high-precision instrument designed for measuring dissolved oxygen (DO) levels, temperature, and barometric pressure. It is equipped with advanced features for accurate and reliable readings in various environments.

1.2 주요 특징

• High-precision DO measurement (%, ppm/mg/L)
• Large LCD display for simultaneous readings of DO, temperature, and barometric pressure
• 자동 온도 보상 (ATC)
• Manual salinity adjustment
• 99-data memory with real-time clock
• 데이터 홀드 기능
• 배터리 부족 표시기
• Selectable auto power-off (20-120 minutes)
• Durable Clark-type electrode with 11.48 ft cable and extended lifespan with proper maintenance

1.3 응용 프로그램

This dissolved oxygen meter is suitable for a wide range of applications, including:

• Aquaculture (fish farming, aquariums)
• Industrial water quality monitoring
• Environmental research and monitoring
• 교육 목적

Image 1.1: The Dissolved Oxygen Meter is used in diverse settings such as aquaculture, hydroponics, and scientific laboratories.

2. 패키지 내용

패키지를 열었을 때 아래 나열된 모든 품목이 들어 있고 상태가 양호한지 확인하세요.

• Dissolved Oxygen Meter Unit
• DO Probe with 11.48 ft (3.5m) Cable
• AAA 배터리 4개
• 5 x Teflon Membranes
• 5 x O-링
• 2 x Electrolyte Bottles
• 영어 사용 설명서
• Sturdy Carrying Case

Image 2.1: All components included in the Dissolved Oxygen Meter kit.

3. 구성 요소 이상view

3.1 Meter Unit

The main meter unit features a large LCD display and several function keys for operation.

• LCD 디스플레이: Shows dissolved oxygen readings, temperature, barometric pressure, time, and various indicators.
• 기능 키:
• 세트: Enters setup mode or confirms settings.
• 오시는 길 : Switches between measurement modes or menu options.
• CAL/Esc: Initiates calibration or exits current menu/setting.
• MEM : 메모리 기록에 접근합니다.
• HLD/Rec: Activates data hold or recording function.
• MR/AV: Recalls memory data or calculates average.
• Probe Port: Connector for the DO probe.

Image 3.1: Labeled diagram of the Dissolved Oxygen Meter unit.

3.2 DO Probe

The Clark-type DO probe is responsible for sensing dissolved oxygen levels. It connects to the main unit via a cable.

• 센서 팁: Contains the sensitive membrane and electrodes for DO measurement.
• 케이블: Connects the probe to the meter unit.

Image 3.2: The Dissolved Oxygen probe.

4. 설정

4.1 배터리 설치

1. Locate the battery compartment on the back of the meter unit.
2. 구획 덮개를 엽니다.
3. AAA 배터리 4개를 올바른 극성(+/-)에 맞춰 넣으세요.
4. 배터리 덮개를 단단히 닫으세요.

4.2 프로브 연결

1. Align the connector of the DO probe cable with the probe port on the top of the meter unit.
2. 커넥터를 시계 방향으로 살살 밀고 돌려 단단히 고정될 때까지 조이십시오.

4.3 Electrolyte Preparation and Membrane Installation

The DO probe requires an electrolyte solution and a membrane cap for proper function. Refer to the detailed instructions in the included manual for precise steps on preparing the electrolyte solution and installing the Teflon membrane and O-rings onto the probe cap.

5. 사용 설명서

5.1 전원 켜기/끄기

• 를 누르세요 세트 button to power on the meter.
• 전원을 끄려면 세트 button until the display turns off, or allow the auto power-off function to activate.

5.2 측정 모드

The meter can display dissolved oxygen in percentage (%), parts per million (PPM), or milligrams per liter (mg/L).

• 를 누르세요 방법 button to cycle through the available DO measurement units.

5.3 온도 측정

The meter automatically measures and displays temperature alongside DO readings. The temperature unit can be switched between Celsius and Fahrenheit.

• Refer to the full manual for instructions on changing the temperature unit.

5.4 Salinity Adjustment

For accurate DO readings in saline water, manual salinity compensation is required.

• Enter the setup menu using the 세트 button and navigate to the salinity setting.
• Adjust the salinity value according to your sample's known salinity.

5.5 Barometric Pressure Input

Barometric pressure affects dissolved oxygen solubility. The meter allows for manual input of barometric pressure for compensation.

• Access the barometric pressure setting in the setup menu to input the local barometric pressure.

5.6 데이터 홀드 기능

• 를 누르세요 HLD/Rec 버튼을 짧게 누르면 디스플레이에 현재 값이 고정됩니다.
• Press it again to release the hold.

5.7 메모리 기능

The meter can store up to 99 data sets, each with a real-time clock stamp.

• To save a reading, press and hold the HLD/Rec button until 'REC' appears.
• To recall saved data, press the 멤 button. Use the navigation buttons (if available, or refer to manual) to scroll through records.

Image 5.1: Operating features of the Dissolved Oxygen Meter.

Image 5.2: The meter features 99 data memory with real-time clock.

Image 5.3: Low battery indicator on the meter's display.

6. 교정

Regular calibration is essential for maintaining the accuracy of your Dissolved Oxygen Meter. The meter supports both air saturation and zero oxygen calibration methods.

6.1 Air Saturation Calibration

This method calibrates the probe in air-saturated water or in humid air, representing 100% saturation.

1. Ensure the probe is clean and has a properly installed membrane and fresh electrolyte.
2. Place the probe in a humid air environment (e.g., in a bottle with a small amount of water, ensuring the probe tip is not submerged) or in air-saturated water.
3. 를 누르세요 칼 보정 모드로 들어가려면 이 버튼을 누르십시오.
4. Follow the on-screen prompts to confirm the air saturation point.

6.2 제로 산소 보정

This method calibrates the probe to a zero oxygen level, typically using a zero-oxygen solution.

1. Prepare a zero-oxygen solution (e.g., using sodium sulfite).
2. Immerse the probe into the zero-oxygen solution.
3. 를 누르세요 칼 button and follow the on-screen prompts to confirm the zero oxygen point.

For detailed step-by-step calibration procedures, including specific values and stability requirements, please refer to the comprehensive instruction manual provided with your device.

7. 유지관리

Proper maintenance ensures the longevity and accuracy of your Dissolved Oxygen Meter.

7.1 프로브 관리

• Always keep the probe tip moist when not in use. Use the protective cap filled with a small amount of storage solution or clean water.
• Clean the probe regularly with distilled water to remove any residue. Avoid abrasive materials.

7.2 Membrane Replacement

The Teflon membrane is a consumable part and needs periodic replacement, especially if damaged or if readings become unstable.

• Carefully unscrew the membrane cap from the probe.
• Remove the old membrane and O-ring.
• Install a new Teflon membrane and O-ring, ensuring it is smooth and free of wrinkles or air bubbles.
• Refill the cap with fresh electrolyte solution before screwing it back onto the probe.

7.3 Electrolyte Solution Replacement

The electrolyte solution inside the probe cap should be replaced periodically (e.g., every 1-3 months or when readings become sluggish).

• Follow the membrane replacement procedure to access the electrolyte.
• Discard the old solution and refill with fresh electrolyte from the provided bottles.

7.4 보관

• Store the meter and probe in the provided carrying case when not in use.
• Remove batteries if the meter will not be used for an extended period to prevent leakage.
• 직사광선 및 극한의 온도를 피해 서늘하고 건조한 곳에 보관하세요.

8. 문제 해결

If you encounter issues with your Dissolved Oxygen Meter, refer to the table below for common problems and solutions.

9. 사양

일반 사양

• 모델 번호: 8403_FBACO
• 전원: 4 x AAA 배터리(포함)
• 메모리: 99 데이터 세트
• 운영 환경: 0-50°C(32-122°F)
• Probe Cable Length: 11.48피트(3.5m)
• 품목 무게: 1 파운드
• 패키지 크기: 6.97 x 5.75 x 2.72 인치

10. 보증 및 지원

10.1 보증 정보

This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims. Specific warranty duration and terms may vary; refer to the warranty card included in your package or contact customer support for details.

10.2 고객 지원

For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Gain Express customer support. Contact information can typically be found on the product packaging, the official Gain Express web사이트나 소매업체를 통해 구매할 수 있습니다.