1. Introduction
This manual provides detailed instructions for the proper use, setup, calibration, and maintenance of your Irfora 3-in-1 pH/EC/Temperature Water Quality Meter. This device is designed for accurate and continuous monitoring of pH, Electrical Conductivity (EC), and temperature in various water solutions. Please read this manual thoroughly before operation to ensure optimal performance and longevity of the product.
2. Product Overview
The Irfora 3-in-1 Water Quality Meter is a multi-parameter digital LCD device capable of simultaneously displaying pH, EC, and temperature readings. Key features include:
- Simultaneous measurement and display of pH, EC, and Temperature.
- Switchable temperature units between Celsius (°C) and Fahrenheit (°F).
- Automatic Temperature Compensation (ATC) for accurate readings.
- Easy EC calibration with a mini screwdriver.
- pH chip with automatic calibration liquid identification.
- Replaceable electrode probes for extended device life.
- Clear LCD display with backlight for easy readability.
Figure 1: Labeled Components. A detailed view of the Irfora meter with labels indicating the EC display, pH & TEMP display, MODE button, TEMP/CAL button, EC electrode probe, temperature electrode probe, and pH electrode probe.
3. Package Contents
Verify that all items listed below are present in your package:
- Irfora 3-in-1 Water Quality Meter Main Unit
- pH Electrode Probe
- EC/Temperature Electrode Probe
- Power Adapter (US/EU type, depending on region)
- Mini Screwdriver for EC Calibration
- Suction Cups for Mounting (2x)
- Mounting Bracket
- Instruction Manual
Figure 2: Package Contents. This image displays the complete package contents, including the main meter unit, pH and EC/Temp probes, power adapter, mini screwdriver for calibration, suction cups, and mounting bracket.
4. Specifications
| Parameter | Value |
|---|---|
| Brand | Irfora |
| Model Number | IBH7872943410570OK |
| Dimensions (L x W x H) | 25 x 18 x 7 cm |
| Weight | 570 g |
| Country of Origin | China |
| pH Measurement Range | 0.00 - 14.00 pH (Typical) |
| EC Measurement Range | 0 - 1999 us/cm; 0 - 19.99 ms/cm (Typical) |
| Temperature Measurement Range | 0 - 50 °C (32 - 122 °F) (Typical) |
| Automatic Temperature Compensation (ATC) | Yes |
5. Safety Information
- Do not immerse the main meter unit in water. Only the probes are designed for submersion.
- Handle electrode probes with care. They are fragile and can be damaged by impact.
- Keep the device and calibration solutions out of reach of children.
- Use only the provided power adapter or a compatible one with the correct voltage and current specifications.
- Avoid exposing the device to direct sunlight for prolonged periods, as this may affect the display.
- Ensure proper ventilation when operating the device.
6. Setup
6.1 Unpacking and Inspection
Carefully remove all components from the packaging. Inspect the meter and probes for any visible damage. If any damage is found, do not proceed with setup and contact customer support.
6.2 Connecting Probes
- Connect the pH electrode probe to the BNC connector on the main unit. Ensure it is securely twisted into place.
- Connect the EC/Temperature electrode probe to the designated port on the main unit.
6.3 Powering On
Plug the power adapter into the DC input port on the main unit, then connect the adapter to a suitable power outlet. The LCD display should illuminate, indicating the device is powered on.
6.4 Mounting the Meter
The meter can be mounted using the provided mounting bracket and suction cups. Attach the bracket to the back of the meter, then use the suction cups to secure it to a clean, smooth surface, such as the side of an aquarium or reservoir.
Figure 3: Rear View with Mounting Bracket. The rear of the Irfora meter, illustrating the mounting bracket and connections for the probes and power supply.
7. Operation
7.1 Taking Measurements
- Ensure the meter is powered on and probes are connected.
- Submerge both the pH electrode and the EC/Temperature electrode into the solution to be tested. Ensure the liquid level covers the sensing elements of both probes.
- Allow a few moments for the readings to stabilize on the LCD display. The meter will show pH, EC, and temperature simultaneously.
Figure 4: Meter in Use. The Irfora 3-in-1 Water Quality Meter in operation, with its probes submerged in a glass of water, demonstrating simultaneous pH, EC, and temperature readings on the dual LCD screens.
7.2 Switching Units
- Temperature Units (°C/°F): Press the 'TEMP/CAL' button to toggle between Celsius and Fahrenheit temperature displays.
- EC Units (us/cm / ms/cm): Press the 'MODE' button to switch between microsiemens per centimeter (us/cm) and millisiemens per centimeter (ms/cm) for EC readings.
8. Calibration
Regular calibration ensures the accuracy of your meter. Calibration should be performed when the meter is new, after electrode replacement, or if readings appear inaccurate.
8.1 pH Calibration
The pH chip features an automatic calibration function that can identify standard calibration liquids. For best results, use pH 4.00 and pH 6.86 buffer solutions.
- Prepare two clean beakers with pH 6.86 and pH 4.00 buffer solutions, respectively.
- Rinse the pH electrode with distilled water and gently blot dry.
- Submerge the pH electrode into the pH 6.86 buffer solution.
- Press and hold the 'TEMP/CAL' button until the display shows 'CAL'. The meter will automatically detect the buffer and calibrate. Wait for the reading to stabilize and the calibration process to complete.
- Rinse the pH electrode again with distilled water.
- Submerge the pH electrode into the pH 4.00 buffer solution.
- Press and hold the 'TEMP/CAL' button again. The meter will automatically calibrate to pH 4.00.
- After calibration, rinse the electrode and store it properly.
8.2 EC Calibration
EC calibration is performed using a standard EC solution (e.g., 1413 us/cm or 12.88 ms/cm) and the provided mini screwdriver.
- Prepare a clean beaker with a known EC standard solution.
- Rinse the EC electrode with distilled water and gently blot dry.
- Submerge the EC electrode into the standard EC solution.
- Locate the EC calibration trimmer on the meter (usually a small screw hole).
- Using the mini screwdriver, carefully turn the trimmer until the EC reading on the display matches the value of your standard solution.
- Rinse the electrode with distilled water after calibration.
9. Maintenance
9.1 Electrode Cleaning and Storage
- Always rinse the electrodes with distilled or deionized water before and after each use to prevent contamination.
- For long-term storage, the pH electrode should be kept moist. Use a storage solution or pH 4.00 buffer solution in the electrode cap. Do not store in distilled water.
- The EC electrode can be stored dry after rinsing.
- If electrodes become fouled, gently clean them with a soft brush and a mild detergent solution, then rinse thoroughly.
9.2 Electrode Replacement
The electrode probes are replaceable. If an electrode becomes damaged or consistently provides inaccurate readings even after calibration, it may need to be replaced. Contact your supplier for compatible replacement probes.
10. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Meter not powering on | Power adapter not connected; Faulty power outlet; Damaged adapter. | Check power connections; Try a different outlet; Test with another compatible adapter. |
| Inaccurate pH readings | Electrode not calibrated; Contaminated electrode; Damaged electrode. | Perform pH calibration (Section 8.1); Clean electrode (Section 9.1); Replace electrode if damaged. |
| Inaccurate EC readings | Electrode not calibrated; Contaminated electrode. | Perform EC calibration (Section 8.2); Clean electrode (Section 9.1). |
| Temperature reading incorrect | Temperature sensor issue; Unit setting incorrect. | Ensure probe is fully submerged; Check if °C/°F unit is correctly selected (Section 7.2). |
| Display flickering or partial display | Loose connection; Internal fault; Exposure to direct sunlight. | Check all probe and power connections; Avoid direct sunlight; Contact customer support if issue persists. |
11. Warranty and Support
Information regarding specific warranty terms and conditions for the Irfora 3-in-1 pH/EC/Temperature Water Quality Meter is not available in this document. For warranty claims, technical support, or replacement parts, please refer to the product packaging or contact your original point of purchase or the manufacturer directly. Please have your model number (IBH7872943410570OK) and purchase date ready when contacting support.