Niv-X Digital Tank Contents Gauge
The Niv-X is a next-generation digital tank contents gauge from Ajax Solutions, designed for performance, versatility, and ease of use in a wide range of tank level monitoring applications. Niv-X provides accurate and reliable tank level measurement, helping you to optimize your operations and ensure safety
Key Features and Benefits
Dual Power Options
“NIV-X offers flexible power input for both standalone and permanent installations.
• Internal 9V PP3 battery (factory fitted)
• External 24 VDC or 85–305 VAC supply via screw terminals
“Note: The internal 9V battery can power the unit only when a voltage-output sensor (0.5–4.5 V) is used.
For 4–20 mA sensors, an external DC or AC supply is required for normal operation and for Modbus communications.”
Benefit: Reliable operation in any location, whether off-grid or mains-fed, with simple, direct wiring.
Intuitive RGB Display
The built-in RGB LCD screen provides immediate visual feedback on system status:
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Green: Normal operation
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Blue: Menu and configuration mode
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Red: Alarm trigger, fault, or low battery
Benefit: Instant clarity for operators and engineers — no guesswork, no delay.
Configurable Digital Inputs
Niv-X includes two configurable digital inputs that can be used to connect:
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A high-level float switch for tank overfill protection
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A bund sensor to detect containment breaches
Benefit: Enhances safety and environmental compliance with real-time alerts.
Remote Alarm Capability
The unit provides a configurable relay output, which can trigger a local or remote alarm device, such as a beacon or sounder.
Benefit: Ensures critical events are clearly flagged, wherever they're needed.
Advanced Sensor Compatibility
Niv-X supports a range of sensor types to suit different tank contents and environments:
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0.5–4.5V Submersible Pressure Sensor: Included as standard. Accurate level readings, matched to your tank size.
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Optional 4–20mA Input:Compatible with submersible pressure transmitters for long-distance cable runs, or non-contact radar/ultrasonic sensors for corrosive, aggressive, or hazardous liquids where no probe should be submerged.
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RS485 Modbus RTU: Ready for integration into SCADA, BMS, and industrial control systems.
Benefit: Flexible, future-proof monitoring for everything from diesel to chemicals.
Multi-Tank Control
Up to 16 NIV-X Units, One Cloud Dashboard
Connect up to 16 NIV-X units into one Site Monitor gateway, giving users local display + full cloud visibility through Site Info.
See every tank level remotely, receive low-level alarms, refill reminders and delivery efficiency prompts, and centralise all liquid storage data into one live dashboard — improving logistics, planning and uptime.
Why Choose Niv-X?
✅ Internal 9V battery plus external 24V DC or 85–305V AC supply options
✅ Clear RGB Display with Real-Time Feedback
✅ Digital Inputs for Alarms and Switches
✅ Relay Output for External Alarms
✅ Modbus RTU (RS485) Integration
✅ Compatible with Contact & Non-Contact Sensors
✅ Site Easy II + Site Info Cloud Monitoring
✅ Fast, Reliable, Installer-Friendly Easy Installation
✅ Flexible Configuration
✅ Clear Visual Status at a Glance
✅ Supports Industry-Standard Sensors
✅ Perfect for Fuel Depots, Industrial Process Tanks, Agriculture, and Utilities
Applications
The Niv-X is designed for a wide variety of industries and applications, including:
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Fuel Depots – Accurate monitoring and stock control
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Industrial Tanks – Maintain flow, prevent downtime
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Agriculture – Manage irrigation and storage tanks
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Utilities – Monitor water levels in real time
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Chemical Storage – Safe, non-contact sensor options available
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Waste Management – Avoid costly overflows and optimise collections
Frequently Asked Questions
Q: What types of liquids can the Niv-X measure?
A: NIV-X is designed for non-volatile liquids such as diesel, heating oil, water and similar fluids. It must not be used directly with petrol, aviation fuel or other ATEX-classified liquids. For aggressive or hazardous media, use NIV-X outside the hazardous zone with a suitably certified remote sensor.
Q: Can the Niv-X be used in hazardous environments?
A: The NIV-X control unit must be installed outside of the hazardous / ATEX-classified zone.
The system may be used with an ATEX-approved radar, ultrasonic or pressure sensor when fed through a certified ATEX safety barrier or isolator.
Always consult the sensor and barrier manufacturer for suitability, approval class and installation guidance before deployment.
Q: How do I install the Niv-X?
A: Niv-X is designed for quick and simple installation. It can be powered by a 9V battery for portable or off-grid applications, or connected directly to 240V mains via its integrated onboard transformer. Installation guides and wiring instructions are included in the product manual.
Q: What kind of alarms can I set up with the Niv-X?
A: Niv-X includes two configurable digital inputs for volt-free contact devices, such as:
• a high-level float switch for tank overfill
• a bund / leak float switch or other dry contact.
Q: What sensors are compatible with Niv-X?
A: Niv-X supports:
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0.5–4.55V submersible pressure sensors (standard)
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4–20mA sensors (e.g. ultrasonic, radar, pressure)
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Modbus RS-485 communication is available only when NIV-X is powered from an external DC or AC supply. The interface is disabled in battery-only mode