Analogue indicators

Yes, upon request, we can create specific versions of our analog indicators designed to operate in environments with specific requirements, such as those classified as ATEX or subject to extreme environmental conditions. These models are made with materials resistant to high temperatures, corrosive atmospheres, or potentially explosive atmospheres, while maintaining their nominal performance and accuracy. Tropicalized versions, special enclosures with advanced protection, and customized versions are also available for applications in the energy, marine, and railway sectors, or in systems with particularly stringent safety regulations.

Analog meters are designed for easy integration with current transformers (CTs), voltage transformers (VTs), and shunts for the indirect measurement of electrical quantities. Ammeters are compatible with CTs with a standard 5 A or 1 A secondary winding, while voltmeters can be connected to VTs with a 100 V or 110 V secondary winding. DC models are compatible with shunts with standard 60 mV or 150 mV drops. This compatibility allows for a broad measurement range and the ability to adapt the instruments to any power system, while maintaining accuracy and complying with IEC standards.

Sì, gli indicatori analogici possono essere installati in parallelo con dispositivi digitali di misura o sistemi di supervisione senza interferenze reciproche. L’elevata impedenza di ingresso garantisce che il prelievo di corrente o tensione sia trascurabile e non alteri le misurazioni digitali. Questo permette di integrare in modo complementare due sistemi di lettura: da un lato un’indicazione analogica continua e immediata, utile per un controllo visivo rapido, dall’altro la precisione numerica e la registrazione dati offerta dai sistemi digitali. Tale configurazione è particolarmente indicata nei quadri di distribuzione e nei sistemi di controllo industriali moderni.

Analog indicators are designed to ensure reliable performance across a wide range of environmental conditions. They operate reliably within a temperature range of -10°C to +55°C and at a relative humidity of up to 90% non-condensing. All models are IP52 ingress protected according to EN 60529 and are constructed from materials resistant to vibration and mechanical shock. They can withstand momentary overloads of up to 1.2 × In continuous and 10 × In for 5 seconds. These features make them ideal for installation in industrial electrical panels, production environments, and systems subjected to harsh conditions.

Analog measurement indicators require no complex routine maintenance and guarantee a long operating life thanks to their mechanical robustness and quality materials. However, for critical applications, a calibration check is recommended every 2–3 years, which can be performed using reference standards or certified calibration services. Connections should be checked periodically to ensure proper tightening and prevent false contacts. When installed according to specifications and used within the specified environmental limits, the instruments can maintain their nominal performance for over 15 years, ensuring consistent reliability over time.

Analogue indicators guarantee a rapid and consistent response time, with a pointer hold-down time typically less than 2 seconds, even in the presence of sudden load changes. Thanks to their precise mechanical construction and high magnetic damping, they ensure stable and reliable performance even in the presence of electrical disturbances or vibrations. These features make them suitable not only for fixed installations in electrical panels, but also for dynamic applications such as test benches, automation systems, or industrial plants subject to rapid changes in electrical quantities.

Each instrument undergoes a rigorous testing process before delivery to ensure compliance and consistent performance over time. Key tests include electrical insulation testing, high-voltage dielectric testing, 100% functional checks, and accuracy class verification according to CEI 85, EN 60051, IEC 414, and VDE 0410 standards. Furthermore, all materials used comply with European safety and electromagnetic compatibility directives and are CE and RoHS compliant. These tests ensure that each instrument meets the requirements for industrial installations and professional applications.

Analog indicators are manufactured with accuracy class 1.5, in compliance with the main reference standards, including CEI 85, EN 60051, IEC 414, and VDE 0410. These international standards guarantee high reliability in reading electrical quantities and stability over time. All models undergo rigorous compliance testing to ensure consistent performance even in the presence of overloads, vibrations, and environmental variations. Class 1.5 ensures a maximum deviation of ±1.5% of the full scale value, a fundamental requirement for industrial applications and precision measurement systems.

In addition to standard models, numerous technical variations are available to adapt analog indicators to specific system or application needs. Available options include custom graduated scales, central zero versions, dual-range instruments, tropicalized versions for high-humidity environments, anti-reflective glass, internal lighting, and screen-printed front panels upon request. Instruments can also be manufactured with special housings or non-standard dimensions for integration into existing panels. All customizations are developed in accordance with IEC and EN standards to ensure uncompromising performance and safety.