Introduction
Product Definition
The A52 4-in-1 Water Quality Test Pen is a portable water quality testing device that integrates pH, TDS, EC, and temperature measurement in one unit. It features a pen-shaped all-in-one design with LCD digital display, backlight, data hold, IP67 waterproof rating, and 5-minute auto power-off, designed for quick reading of water quality parameters.
Product Features
- 4-in-1 Testing: Supports simultaneous reading of pH, TDS, EC, and temperature.
- Pen-shaped All-in-One Design: Compact structure for easy portability and field operation.
- LCD Digital Display: Clear readings with backlight support, viewable in low-light conditions.
- Data Hold: Locks the current reading for convenient recording and comparison.
- IP67 Waterproof: Handles daily splashes and short-term immersion.
- 5-Minute Auto Power-Off: Automatically shuts down after no operation to save battery life.
Core Specifications
The main measurement ranges and accuracy of the A52 4-in-1 Water Quality Test Pen are as follows:
- pH Measurement: Range 0.01-14pH; Resolution 0.01pH; Accuracy ±0.05pH.
- TDS Measurement: Range 1-10000ppm; Resolution 1ppm; Accuracy ±2% F.S.
- EC Measurement: Range 0-10000μS/cm; Resolution 1μS/cm; Accuracy ±2% F.S.
- Temperature Measurement: Range -30-60°C / -22-140°F; Resolution 0.1°C/°F; Accuracy ±0.5.
- Power Supply: 4 × 1.5V LR44 button cell batteries.
- Product Dimensions: 185mm × 38mm.
- Waterproof Rating: IP67.
- Auto Power-Off: After 5 minutes of no operation.
Usage Scenarios
- Quick testing of household drinking water and water purifier output
- Water quality monitoring for fish tanks and aquariums
- Nutrient solution testing for hydroponics and soilless cultivation
- Water quality testing for swimming pools and spa pools
- On-site testing in laboratory teaching and water treatment industries
FAQ
Q: What water quality parameters can the A52 measure?
A: The A52 can measure pH, TDS, EC, and temperature (TEMP).
Q: What is the pH measurement range?
A: The pH measurement range is 0.01-14pH, with a resolution of 0.01pH and accuracy of ±0.05pH.
Q: What is the TDS measurement range?
A: The TDS measurement range is 1-10000ppm, with a resolution of 1ppm and accuracy of ±2% F.S.
Q: What is the EC measurement range?
A: The EC measurement range is 0-10000μS/cm, with a resolution of 1μS/cm and accuracy of ±2% F.S.
Q: What is the temperature measurement range?
A: The temperature measurement range is -30-60°C / -22-140°F, with a resolution of 0.1°C/°F.
Q: What is the waterproof rating of the product?
A: The product has a waterproof rating of IP67.
Q: What type of battery does the product use?
A: It uses 4 × 1.5V LR44 button cell batteries.
Q: Does the product support backlight?
A: Yes, the A52 features an LCD digital display with backlight.
Q: Does the product auto power off?
A: Yes, it automatically powers off after 5 minutes of no operation.
Q: Does the product support data hold?
A: Yes, it supports the data hold function.
Q: What are the product dimensions?
A: The product dimensions are 185mm × 38mm.
Related Terms
- pH: A value indicating the acidity or alkalinity of an aqueous solution. The lower the pH, the stronger the acidity; the higher the pH, the stronger the alkalinity.
- TDS: Total Dissolved Solids, indicating the total amount of dissolved substances in water, commonly expressed in ppm.
- EC: Electrical Conductivity, an indicator of the conductivity of an aqueous solution, commonly expressed in μS/cm.
- ppm: Parts per million, a concentration unit commonly used for TDS readings.
- μS/cm: Microsiemens per centimeter, a common unit for electrical conductivity.
- F.S: Full Scale, indicating the accuracy range relative to the full-scale measurement.
- IP67: An ingress protection rating. 6 indicates complete protection against dust, and 7 indicates protection against short-term immersion in water.
- LR44: A common button cell battery model with a rated voltage of 1.5V per cell.

