The HI9813-61 Portable pH/EC/TDS/Temperature Meter is a versatile and water-resistant multi-parameter instrument designed specifically for agriculture, hydroponics, greenhouses, and nursery applications. It combines pH, electrical conductivity (EC), total dissolved solids (TDS), and temperature measurements in one compact device, simplifying routine water quality analysis.
Equipped with a large, easy-to-read LCD, the meter clearly displays measurement values along with on-screen calibration instructions, making operation straightforward even for new users. The built-in CAL Check feature enhances reliability by helping users verify calibration status and electrode condition for accurate readings.
The HI9813-61 provides pH measurements with 0.1 resolution and ±0.1 accuracy. EC measurements range from 0.00 to 4.00 mS/cm, while TDS ranges from 0 to 1999 ppm, both offering precise readings with 2% full-scale accuracy. Temperature compensation is automatic for EC and TDS with a fixed coefficient of 2%/°C, ensuring consistent results under varying environmental conditions.
Calibration is simple and efficient using manual one-point adjustment. pH is calibrated at 7.01, while EC/TDS calibration can be performed at 1.41 mS/cm or 1500 ppm using built-in trimmers. The LCD also includes a battery life indicator and step-by-step guidance for calibration and measurement.
The supplied multi-parameter probe features a durable polypropylene body with an amplified pH electrode, integrated EC/TDS sensor, and temperature sensor. The built-in amplifier minimizes interference from humidity and electrical noise, ensuring stable and reliable performance.
Designed for field use, the HI9813-61 is waterproof, durable, and requires no probe changes when switching between parameters, making it a convenient and efficient solution for everyday testing.
