1. Introduction and Overview
The Yieryi Smart Food PH Meter YY-2023 is an advanced pH and temperature testing device designed for a wide range of applications, particularly in food and semi-solid media. This meter features a high-precision replaceable piercing electrode, a backlit LCD display for easy reading, and automatic temperature compensation (ATC) for accurate measurements. It comes with a complete kit including calibration fluids and probe protection fluid, ensuring readiness for use.
This manual provides detailed instructions on how to set up, operate, calibrate, and maintain your YY-2023 pH meter to ensure optimal performance and longevity.
2. Product Features
- Smart Bluetooth Connectivity: Connects to a mobile application for enhanced data management and functionality.
- High-Precision Spear Tip Electrode: Specifically designed for solid and semi-solid samples like cheese, meat, fruits, dough, and soil.
- Integrated Temperature Sensor: Provides stable and durable temperature readings alongside pH.
- Backlit LCD Display: Ensures clear visibility of readings even in low-light conditions.
- Automatic Temperature Compensation (ATC): Guarantees accurate pH measurements across a temperature range of 0°C to 50°C.
- Waterproof Design: IP65 rated for protection against water splashes.
- Power Saving Function: Automatic shut-down after 8 minutes of inactivity to conserve battery life.
- Detachable and Replaceable Electrode: Allows for easy maintenance and replacement of the pH/Temp probe.
- Comprehensive Kit: Includes pH calibration solutions (4.00pH, 6.86pH) and KCL probe storage solution.
3. Specifications
| Parameter | Value |
|---|---|
| Model Number | YY-2023 |
| PH Range | 0.00 ~ 14.00PH |
| TEMP Range | 0 ~ 50 ℃ |
| PH Resolution | 0.01PH |
| TEMP Resolution | 0.1℃ |
| PH Accuracy | ± 0.02 PH |
| TEMP Accuracy | ±0.5℃ |
| Automatic Temp Compensation | 0℃ ~ 50℃ |
| Battery | 2 x 1.5V (AAA) (Not Included) |
| Operating Temperature | 0℃ ~ 50℃ |
| Calibration | 2 Points with Auto Buffer Recognition |
| Automatic Shut-Down | 8 Min |
| Product Size | 207 mm/8.15 in * 36 mm/1.42 in * 32 mm/1.26 in |
| Weight | 85g |
| Display Type | DIGITAL |
| With Backlight | Yes |
| Is Smart Device | No (Refers to complex smart home integration; basic Bluetooth connectivity is present) |
| High-concerned chemical | None |
| Origin | Mainland China |
| Certification | CE |
4. Package Contents
Upon opening your YY-2023 pH Meter kit, you should find the following items:
- 1 x Yieryi Smart Food PH Meter (YY-2023) with spear tip pH/Temp probe
- 1 x KCL Storage Solution (15ml/1fl.oz)
- 1 x Calibration Buffer Solution pH 4.00 (30ml/1.7fl.oz)
- 1 x Calibration Buffer Solution pH 6.86 (30ml/1.7fl.oz)
- 1 x User Manual
- Batteries (2 x 1.5V AAA) (Not Included, please purchase separately)
5. Setup
- Install Batteries: Open the battery compartment and insert 2 x 1.5V AAA batteries, ensuring correct polarity. Close the compartment securely.
- Remove Protective Cap: Gently turn the protective cap counter-clockwise to remove it from the electrode.
- Initial Rinse: Before first use or calibration, rinse the electrode with distilled water and gently wipe it dry with a clean, soft cloth.
6. Operation
- Power On: Press the 'ON/OFF/CAL' button to turn on the pH meter.
- Prepare Sample: If testing a firm sample (e.g., meat, fruit, cheese), use a conical knife to pierce a small hole before inserting the electrode to prevent damage.
- Insert Electrode: Carefully immerse the electrode into the liquid sample or insert it into the prepared solid/semi-solid sample. Ensure the electrode tip is fully submerged or inserted into the testing medium.
- Wait for Stabilization: Gently shake the meter to ensure proper contact and wait for the readings on the LCD screen to stabilize.
- Read Measurements: Once stable, the pH and temperature values will be displayed.
- Clean and Store: After each use, rinse the electrode thoroughly with distilled water and gently wipe it dry. Replace the protective cap, ensuring the sponge inside is moist with KCL storage solution.
7. Calibration
It is crucial to calibrate the pH meter regularly for accurate readings. Always calibrate pH 7.00 first, followed by pH 4.00.
- Preparation: Ensure the protective cap is removed. Turn on the pH meter.
- Rinse Electrode: Wash the electrode in pure (distilled) water and wipe it dry with a clean cloth.
- Calibrate pH 7.00:
- Immerse the electrode into the pH 6.86 (or 7.00) calibration solution.
- Gently shake the meter and wait for the reading to stabilize.
- Press and hold the 'ON/OFF/CAL' button for about 5 seconds, then release. The 'CAL' symbol will appear on the display.
- Wait for the calibration to complete (the display will show '6.86' or '7.00' and then return to measurement mode).
- Rinse Electrode: Wash the electrode in pure (distilled) water and wipe it dry.
- Calibrate pH 4.00:
- Immerse the electrode into the pH 4.00 calibration solution.
- Gently shake the meter and wait for the reading to stabilize.
- Press and hold the '4.00' button for about 5 seconds, then release. The 'CAL' symbol will appear on the display.
- Wait for the calibration to complete (the display will show '4.00' and then return to measurement mode).
- Final Rinse and Storage: After calibration, wash the electrode in pure water, wipe dry, and cover with the protective cap. Turn off the tester.
8. Maintenance
- Electrode Cleaning: Always rinse the electrode with distilled water after each use to remove any residue. Do not use abrasive materials.
- Electrode Storage: Keep the electrode's protective cap on when not in use. Ensure the sponge inside the cap is kept moist with KCL storage solution to prevent the electrode from drying out, which can affect its accuracy and lifespan.
- Battery Replacement: If the display becomes dim or the meter behaves erratically, replace the AAA batteries.
- Handle with Care: The spear tip electrode is delicate. When inserting into solid samples, always pre-pierce a hole to avoid bending or breaking the tip.
- APP Updates: If experiencing issues with wireless connectivity or data storage via the mobile APP, uninstall the current APP and download the latest version from the official source to reinstall.
9. Troubleshooting
- Unstable Readings:
- Ensure the electrode is clean and free from residue.
- Check if the electrode is properly immersed in the sample.
- Recalibrate the meter if readings remain unstable or inaccurate.
- Verify the battery level; low batteries can affect stability.
- No Display/Meter Not Turning On:
- Check if the batteries are correctly installed.
- Replace with new batteries if necessary.
- Mobile APP Connectivity/Data Storage Issues:
- Uninstall the current APP from your mobile phone.
- Download and install the latest version of the APP from the official app store.
- Ensure Bluetooth is enabled on your device and the meter is within range.
- Electrode Damage: If the electrode is visibly damaged or consistently provides erratic readings even after cleaning and calibration, it may need to be replaced.
10. User Tips
No specific user tips were available from reviews or Q&A for this product at this time. However, general best practices for pH meters include:
- Always store the electrode with its protective cap containing KCL solution to maintain its hydration.
- Perform calibration before critical measurements or if the meter has not been used for an extended period.
- When testing food items, ensure the sample is representative and large enough for proper electrode immersion.
11. Warranty and Support
For any questions, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
