PHONTECH A/S 4005/4016 INTRINSICALLY SAFE TELEPHONE SYSTEM NEMKO 12 LINE

PHONTECH A/S Model 4005/4016 Intrinsically Safe Telephone System

1. Overview

The PHONTECH A/S 4005/4016 is a robust, certified intrinsically safe (IS) telephone system engineered for critical communication in hazardous environments. It is designed to ensure safe and reliable voice communication in areas with explosive gases, dust, or vapors (Zone 1/21, Zone 2/22 as per ATEX/IECEx standards). The system is NEMKO certified, confirming compliance with stringent international safety standards.

NEMKO NR EX: 92C386

EEx ia 11B T4

2. Key Features

• Intrinsic Safety Certification: The system is certified by NEMKO to relevant standards (e.g., ATEX, IECEx). This means the electrical and thermal energy is limited to levels incapable of igniting a specific hazardous atmospheric mixture.

• 12-Line Capacity: Supports a configuration of up to 12 telephone lines, allowing for flexible deployment and multiple communication points within a facility.

• Robust Construction: Typically housed in rugged, corrosion-resistant enclosures (often stainless steel or coated aluminum) suitable for harsh industrial environments (offshore platforms, oil refineries, chemical plants, tank farms).

• Weatherproof & Hazardous Area Design: Enclosures are rated for outdoor use (IP66/IP67 minimum) and are certified for use in defined hazardous zones.

• Clear Audio Quality: Designed with noise-canceling technology and high-quality components to ensure clear communication even in noisy industrial settings.

• System Compatibility: Can often interface with existing PABX/PLMN networks or operate as a standalone dedicated system. The 4005/4016 models typically refer to the master/central unit and the associated rugged IS telephone handsets.

3. Typical Components of the System

1. Central Unit / Main Station (Model 4016 likely): The core control unit that manages the 12 lines, power supply, and network interface. It is installed in a safe area or within an approved hazardous area enclosure.

2. Intrinsically Safe Telephone Handsets (Model 4005 likely): The explosion-proof telephones installed in the hazardous areas. These are often:

   • Sturdy: Heavy-duty, with a robust handset and a reinforced cable.

   • Call Initiation: Feature a call button or dial pad.

   • Audible & Visual Signals: Equipped with a loud ringer and a bright visual beacon (flashing light) for signaling in noisy environments.

3. Power Supply: A certified intrinsic safety barrier or power unit that provides safe, limited power to the field-mounted telephones.

4. Certifications & Standards

• NEMKO Certification: Assures independent assessment and compliance.

• ATEX Directive: For use in European hazardous locations.

  • Equipment Category: Likely II 2 G (Zone 1) for gas and II 2 D (Zone 21) for dust.

• IECEx System: International certification for explosive atmospheres.

• Other Approvals: May also carry approvals for marine use or specific national standards.

5. Typical Applications

• Oil & Gas Platforms (Onshore/Offshore)

• Petrochemical Refineries and Plants

• Pharmaceutical Manufacturing

• Grain Silos and Food Processing (combustible dust)

• Paint Booths and Spray Areas

• Tanker Loading Terminals

• Mining Operations (where applicable)