Hanna HI981420-01 GroLine pH EC/TDS

Hanna HI981420-01 GroLine pH EC/TDS

The Hanna HI981420-01 GroLine pH EC/TDS is an integrated, continuous monitoring system designed to measure pH, EC (Electrical Conductivity), TDS (Total Dissolved Solids), and temperature in nutrient solutions. Engineered specifically for hydroponic, greenhouse, and fertigation systems, this device provides growers with real-time data, advanced calibration options, and logging capabilities to maintain optimal plant health.

Featuring a large backlit LCD, automatic temperature compensation, and a pre-amplified multiparameter probe, the HI981420 offers accurate, stable measurements in a compact and waterproof design.

Features

• Simultaneous pH, EC/TDS, and Temperature Monitoring
  All key water quality parameters in one compact device.

• Accurate and High-Resolution Measurements

  • pH resolution: 0.01 pH

  • EC resolution: 0.01 mS/cm

  • TDS resolution: 10 ppm

  • Temperature resolution: 0.1°C

• Automatic Temperature Compensation
  Built-in temperature sensor ensures consistent readings across all parameters.

• Easy Calibration

  • pH: One or two-point calibration with automatic buffer recognition (pH 4.01, 7.01, 10.01)

  • EC: One-point calibration at 1.41 mS/cm or 5.00 mS/cm

• Adjustable TDS Conversion Factor
  Choose between 0.5 CF (0–5000 ppm) or 0.7 CF (0–7000 ppm) based on your growing protocol.

• Data Logging & GLP Compliance

  • Logs last 30 days of data at 15-minute intervals

  • Stores last 5 calibrations with date and time stamps

• User-Friendly Design

  • Bright, high-contrast 128 x 64 pixel LCD with green backlight

  • USB Type-C connectivity for data transfer and setup

• Durable and Waterproof (IP65 Rated)
  Built for grow environments with high humidity and frequent exposure to water.

• Advanced Alarm System
  High/low alarms with enable/disable options for all parameters to alert growers of nutrient imbalances.

Specifications

pH Measurement

• Range: 0.00 to 14.00 pH

• Resolution: 0.01 pH (0.1 pH selectable)

• Accuracy: ±0.05 pH (±0.1 pH selectable)

• Calibration: One or two-point with pH 4.01, 7.01, or 10.01 buffers

• Temperature Compensation: Automatic

Conductivity / TDS

• EC Range: 0.00 to 10.00 mS/cm

• EC Resolution: 0.01 mS/cm

• EC Accuracy: ±0.1 mS/cm (0–5 mS/cm); ±0.2 mS/cm (5–10 mS/cm)

• TDS Range:

  • 0–5000 ppm (CF 0.5)

  • 0–7000 ppm (CF 0.7)

• TDS Resolution: 10 ppm

• TDS Accuracy: ±2% full scale

• TDS Conversion Factor: Selectable (0.5 or 0.7)

• Temperature Compensation: Automatic (β = 1.9%/°C)

Temperature

• Range: 0.0 to 60.0°C

• Resolution: 0.1°C

• Accuracy: ±0.5°C

General

• Display: 128 × 64 pixel B/W LCD with green backlight

• Connectivity: USB Type-C

• IP Rating: IP65

• Alarms: High/low for all parameters with enable/disable option

• Data Logging: Last 30 days (15 min intervals)

• GLP: Stores last 5 calibrations with timestamp

• Probe: HI1285-8 multiparameter probe with temperature sensor, DIN connector, 2 m cable

• Power Supply: 12 VDC adapter (included)

• Operating Environment: -5 to 50°C, max 95% RH (non-condensing)

• Dimensions: 125 x 185 x 38 mm

• Weight: 333 g

Applications

• Hydroponics and Soilless Cultivation
  Ensures accurate nutrient dosing by monitoring EC, pH, and temperature in real-time.

• Greenhouse & Indoor Farming
  Helps maintain stable growing conditions for optimal plant health.

• Fertigation Systems
  Supports automated systems by providing real-time water quality data.

• Research & Education
  Ideal for academic institutions, labs, and training centers focused on plant nutrition.

• Nutrient Solution Tanks & Reservoirs
  Provides reliable monitoring in centralized nutrient mixing systems.