HANNA Conductivity Controller (0.1 uS/cm) with Probe or Transmitter Input

The HI8931 is a user-friendly, panel-mounted conductivity controller. It accepts both electrode and transmitter inputs, offering compatibility with probes like HI 7635 (for in-line use) and HI 7638 (for tanks), each equipped with an NTC sensor for temperature-compensated measurements. This device supports direct connections up to 20 meters and, when paired with a 4-20 mA output transmitter (HI 8936 or HI 8936L series), ensures a robust, interference-free signal at distances up to 300 meters. Key features include selectable ON/OFF/automatic dosing control, built-in auto-diagnostic functions, user-selectable 4-20 and 0-20 mA outputs, a backlit LCD, and a transparent splash-proof cover. It comes with mounting brackets and instructions, offering a range of 0.0 to 199.9 S/cm, a resolution of 0.1 S/cm, and an accuracy of 2% F.S. at 20°C. The HI8931 operates within a temperature range of -10 to 50°C and a humidity range of up to 95% non-condensing.

• Key Components: HI8931, HI 7635, HI 7638, NTC
• HI8931 Range: Up to 20 m (67)
• HI8931 Compatibility: Both electrode and transmitter inputs accepted
• Control Modes: Selectable manual ON, OFF, and automatic dosing
• Quality Assurance: Built-in auto-diagnostic function for offset and slope
• Output Options: Both 4-20 and 0-20 mA output user selectable
• Display: Backlit LCD
• Protection: Transparent splash-proof cover included
• Indicators: Operational mode LED indicators
• Usage: Panel mounted conductivity controller for simplicity of use
• Connection: Direct connection up to 20 m (67) without signal amplification
• Signal Strength: Strong, interference-free signal up to 300 meters (1000) with transmitter
• Included Accessories: Mounting brackets and instructions
• Manual: Available for download
• Specifications: Available