VTSYIQI Intelligent Water Activity Tester Model VD-90P User Manual

1. Įvadas

Water activity (aw) is a critical parameter indicating the free water content in a substance, directly influencing microbial growth and product stability. The VTSYIQI Intelligent Water Activity Tester Model VD-90P is designed for precise measurement of water activity in various materials, including paste, dough, and other food products. This instrument features a high-precision WSC-4 sensor, a mini printer for data recording, and an intuitive LCD display for ease of use. This manual provides detailed instructions for the proper setup, operation, and maintenance of your VD-90P water activity meter.

2. Produktas baigtasview

2.1 Komponentai

The VTSYIQI Intelligent Water Activity Tester Model VD-90P package typically includes the following components:

• Main Host Unit (VD-90P)
• WSC-4 Water Activity Sensor
• Mini spausdintuvas
• Maitinimo kabeliai
• Vartotojo vadovas
• Calibration Salts (Sodium Chloride, Magnesium Chloride)
• Sample Patiekalai
• Reguliuojamas laikiklis

Figure 1: Complete VD-90P Water Activity Tester Kit

Figure 2: VD-90P Main Unit with LCD and Adjustable Bracket

2.2 Pagrindinės savybės

• Matavimo diapazonas: 0-0.980aw (non-condensing environment)
• Matavimo tikslumas: ±0.015aw (@25°C)
• Temperatūros diapazonas: 0-50°C
• Temperatūros tikslumas: ±0.5°C
• Pakartojamumas: ≤0.015
• Temperatūros koeficientas: ≤0.0005/°C
• Matavimo taškai: 1
• Greitas matavimas: Results in approximately 10 minutes
• Integrated Mini Printer for convenient data recording
• High Brightness LCD Display for intuitive operation
• Automatic Compensation for Environmental Parameters
• English Menu for user-friendly navigation
• Versatile application for solid, liquid, lump, and powder samples

Figure 3: Key Features of the VD-90P

Figure 4: Applicable Sample tipai

3. Sąranka

1. Išpakuokite komponentus: Carefully remove all components from the packaging. Verify that all listed items in Section 2.1 are present and undamaged.
2. Vieta: Place the main host unit on a stable, level, and vibration-free surface, away from direct sunlight, heat sources, and strong electromagnetic fields.
3. Prijunkite jutiklį: Connect the WSC-4 water activity sensor cable to the designated sensor port on the main unit. Ensure a secure connection.
4. Prijunkite spausdintuvą: Connect the mini printer to the main unit using the provided cable.
5. Maitinimo jungtis: Connect the power cable to the main unit and then to a suitable power outlet (110V AC or 220V AC, depending on your model and region).

5 pav.: Galinio skydelio jungtys

4. Operacija

1. Maitinimas: Press the power switch to turn on the device. The LCD display will illuminate.
2. Meniu naršymas: Use the "Selection" buttons (up/down arrows) to navigate through the menu options and the "Confirmation" button to select an option.
3. Paruoškite SampLe: Padėkite savo sample into a clean, dry sample dish. Ensure the sample fills the dish adequately without overflowing.
4. Įdėkite SampLe: Atsargiai uždėkite sample dish into the sensor chamber of the WSC-4 sensor. Close the sensor lid securely to create a sealed environment.
5. Pradėti matavimą: From the main menu, select "Measurement" and confirm. The device will begin the measurement process, which typically takes about 10 minutes.
6. Skaityti rezultatus: Once the measurement is complete, the water activity (Aw) and temperature (T) will be displayed on the LCD screen.
7. Spausdinimo duomenys: If desired, use the integrated mini printer to print the measurement results. Refer to the printer's specific instructions for paper loading and operation.

4.1 Veikimo vaizdo vadovas

5. Kalibravimas

The VTSYIQI VD-90P Water Activity Tester is factory-calibrated for immediate use. Regular recalibration is recommended approximately every 5 months to ensure continued accuracy. For calibration, you will need pure Sodium Chloride (NaCl) and Magnesium Chloride (MgCl2) solutions, which can be purchased locally as liquid powders are restricted for air transport.

1. Access Calibration Menu: From the main menu, select "Calibration" and confirm.
2. Select Calibration Standard: The display will show options for calibration standards (e.g., NaCl, MgCl2). Select the appropriate standard you are using.
3. Prepare Calibration SampLe: Place the chosen calibration solution into a clean sample patiekalas.
4. Insert Calibration SampLe: Padėkite sample dish into the sensor chamber and close the lid.
5. Pradėti kalibravimą: Follow the on-screen prompts to initiate the calibration process. The device will measure the standard and adjust its readings accordingly.
6. Confirm Calibration: Once calibration is complete, the device will indicate success. Repeat the process for other calibration standards if necessary.

6. Priežiūra

• Jutiklio valymas: Regularly clean the WSC-4 sensor and sample chamber with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the sensor.
• Saugykla: Store the VD-90P unit in a clean, dry, and temperature-stable environment when not in use. Keep it away from dust and corrosive substances.
• Spausdintuvo priežiūra: Ensure the mini printer has sufficient paper. Replace paper rolls as needed, following the printer's specific instructions.
• Išjungti: Always turn off the device using the power switch when not in operation.

7. Problemų sprendimas

If you encounter issues with your VTSYIQI VD-90P Water Activity Tester, consider the following common troubleshooting steps:

• Įrenginys neįsijungia: Check the power cable connection to both the unit and the power outlet. Ensure the power switch is in the 'On' position.
• Netikslūs rodmenys: Verify that the sensor is clean and properly connected. Ensure the sample dish is correctly seated and the sensor lid is closed tightly. Consider performing a calibration as described in Section 5.
• Printer Not Working: Check the printer cable connection to the main unit. Ensure the printer has paper and is powered on. Refer to the mini printer's manual for specific troubleshooting.
• "No Condensing" Error: This indicates that the environmental conditions might be outside the recommended operating range. Ensure the testing environment is stable and non-condensing.

For persistent issues or error messages not covered here, please refer to the comprehensive user manual included with your device or contact VTSYIQI customer support.

8. Specifikacijos

9. Garantija ir palaikymas

The VTSYIQI Intelligent Water Activity Tester Model VD-90P comes with warranty protection. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact VTSYIQI customer service. For technical support, inquiries, or service requests, please reach out to VTSYIQI directly through their official channels.