Hanna instruments pH Analog Controller with Dual Output and Self-Diagnostic Test Model : HI8711

Hanna instruments pH Analog Controller with Dual Output and Self-Diagnostic Test Model : HI8711

Product Description & Specifications: Hanna Instruments pH Analog Controller with Dual Output and Self-Diagnostic Test (Model: HI8711)

Overview

The Hanna Instruments HI8711 is a compact, reliable pH analog controller designed for continuous monitoring and control of pH levels in industrial, laboratory, and process applications. Featuring dual output functionality and self-diagnostic tests, this device ensures accurate pH measurement and system stability. Its user-friendly interface, robust construction, and automatic calibration make it ideal for water treatment, aquaculture, chemical processing, and environmental monitoring.

Key Features

1. Dual Output Control
   • Relay Outputs: Two SPDT relays for alarm or process control (e.g., activating pumps, valves, or alarms).
   • Analog Output: 4–20 mA signal for integration with PLCs, SCADA systems, or data loggers.
2. Self-Diagnostic Functionality
   • Automatic Sensor Diagnostics: Alerts for electrode issues, calibration errors, or out-of-range measurements.
   • Status Indicators: Visual warnings for faulty sensors or system malfunctions.
3. Precision Measurement
   • pH Range: 0.00 to 14.00 pH with ±0.01 pH accuracy.
   • Temperature Compensation: Automatic or manual (0–100°C) via integrated temperature probe.
4. User-Friendly Operation
   • Large LCD Display: Clear real-time pH and temperature readings.
   • Automatic Calibration: One- or two-point calibration with pre-programmed buffer solutions (pH 4.01, 7.01, 10.01).
5. Durable Design
   • IP54 Protection: Dust and splash-resistant housing for harsh environments.
   • Universal Power Supply: 100–240 VAC, 50/60 Hz compatibility.

Technical Specifications Hanna instruments pH Analog Controller with Dual Output and Self-Diagnostic Test Model : HI8711 

• Measurement Range: 0.00–14.00 pH
• Accuracy: ±0.01 pH
• Temperature Range: 0–100°C (32–212°F)
• Outputs:
  • Relay: 2 x SPDT (5A, 250 VAC)
  • Analog: 4–20 mA (isolated, 500 Ω max load)
• Power Supply: 100–240 VAC, 50/60 Hz
• Display: Backlit LCD with pH, temperature, and status indicators
• Certifications: CE, RoHS, IP54

Optional Accessories: Replacement electrodes, additional buffer solutions, communication modules.

Summary

The Hanna Instruments HI8711 pH Analog Controller (Model: HI8711) is a versatile and dependable solution for pH monitoring and control in demanding environments. Its dual relay and analog outputs enable seamless integration with industrial systems, while self-diagnostic features ensure minimal downtime and consistent accuracy. With automatic calibration, temperature compensation, and a rugged IP54-rated design, it excels in applications such as wastewater treatment, aquaculture, and chemical manufacturing. The intuitive interface and robust performance make it a practical choice for technicians and engineers prioritizing precision and reliability.