Conductivity multi-parameter controller Nexus 3000

ORPpHfree chlorine

Overview
The Nexus 3000 is a multiparameter controller for continuous monitoring and control of water quality. The very large display shows all operating parameters at a glance. The instrument supports the following measurements:

• pH
• Rx (redox)
• Conductivity
• Amperometric chlorine
• mA input for potentiostatic sensors
• Flow

Configurations

• 144 x 144 mm enclosure, IP65 for wall mounting
• 96 x 96 mm panel mounting (IP65 front, IP20 rear section)

Features

• Single-parameter display: large screen presents all operating values for clear on-site reading.
• Relay2 flushing function: configurable Relay2 output for automatic sensor flushing with settings for washing duration, wait-for-stabilisation and activation interval.
• Guided calibration: step-by-step calibration wizard to restore sensor performance and ensure correct measurement alignment.
• Relay activation modes: On/Off, timed activation and proportional activation for flexible process control.
• Analogue and digital outputs: 2 relays for setpoint control and probe cleaning management, 4–20 mA analogue output and frequency output; installer-selectable configurations.
• Temperature compensation: display and automatic compensation using an external temperature sensor.
• Events and alarms: event/alarm log with history view and reset capability.

Accessories

• Compatible probes and sensors for pH, conductivity, chlorine and Rx measurements (multiple electrode and probe types available).

Applications

• Cooling towers
• Irrigation systems
• Electroplating and galvanic processes
• Drinking water treatment
• Wastewater treatment
• Reverse osmosis systems
• Boiler water control

Technical specifications

• Model: Nexus 3000
• Power supply: 100 to 240 VAC 50/60 Hz
• pH measurement range: 0 ÷ 14.00 (resolution shown on display)
• Flow rate measurement: 0.0000 to 99.999 l/sec
• Chlorine measurement (amperometric): 0 - 200 ppm
• Outputs: 2 relays; 4/20 mA analogue output; frequency output
• Relay functions: setpoint control, probe cleaning management, temperature measurement, alarm control; Relay2 configurable for flushing
• Mounting options: 144 x 144 mm (wall, IP65) or 96 x 96 mm (panel, IP65 front / IP20 rear)
• Temperature compensation via external temperature sensor
• Event and alarm history with reset capability
• Display: very large display showing all operating parameters