The DNI
The DNI - Intelligent Level Detector - is a patented leak detection system using an indirect measurement method.
Principle
The DNI measures, learns, calculates and alerts in the event of a leak
DNI is an intelligent system dedicated to the control of the tightness of refrigeration systems. Thanks to a weighing system, pressure and temperature measurements performed every 3 seconds, as well as dedicated algorithms, DNI performs continuous leak detection.
Able to learn the normal operation of a refrigeration system, the DNI determines a reference level and then activates the right alarm at the right time. Patented since 2009, it complies with French and European regulatory requirements for leak detection.
The Matelex intelligent level detector is suitable for all installations with a HP (high pressure) liquid tank: vertical, horizontal or horizontal inclined tanks.
The DNI works with all refrigerants and has more than 120 pre-registered fluids, including CO2 and ammonia (NH3).
DNI is connected to the PolarVisor Web interface. This secure portal enables remote monitoring of refrigeration systems through performance analysis tools, alerts and technical advice dedicated to optimizing the operation of the systems.
Several options are available for connecting the DNI to the PolarVisor Web interface:
- wifi
- ethernet cable / RJ45
- 3G / 4G modem.
Two types of alarms warn in the event of a leak:
- A classic low-level alarm: if the level falls below the threshold determined on site or remotely, an alarm is triggered.
- A so-called "statistical" alarm from learning how the installation works.
Once the DNI is installed, it will take a few days to identify normal variations in the refrigerant level and abnormal variations. The DNI is then able to determine a reference level and warn as soon as it moves away from it.
For what type of tank?
The DNI is suitable for all types of tank. Whether vertical, horizontal
or even inclined, the DNI is capable of calculating refrigerant levels and volumes.
Simple vertical tanks
Horizontal tanks on outdoor units
Double vertical tanks
Horizontal and inclined tanks
For which fluids?
The DNI works with all refrigerants. Over 120 fluids are included in the DNI library, includingCO2 and ammonia (NH3).
How does the DNI communicate?
The DNI is connected to the PolarVisor web interface. Several connection options are available: wifi, Ethernet/RJ45 cable or a 4G modem for connecting up to 4 control units. Connection to PolarVisor connection brings a host of benefits, including easier technical support, fault identification and automatic updates. Note: data exchange between the DNI and PolarVisor is secured by data encryption.
How do leak alerts work?
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More information
Installation
Matelex can help you install your DNI and its complementary add-on modules with a detailed, illustrated installation manual. Our technical support is available by phone or email, and offers remote and/or on-site training sessions.
Performance
DNI complies with French and European regulatory requirements. Patented and tested by independent bodies, the DNI triggers an alarm as soon as a leak occurs, and before it reaches regulatory thresholds.
Nos formations ouvertes
Vous souhaitez mieux connaître le DNI, la PolarBox et leurs modules, vous former à leur installation
ou à l'utilisation de PolarVisor ? Nous organisons des formations pratiques
adaptées à vos besoins.