Project Telecom PTEX106 ATEX Explosion Proof Telephone

The Project Telecom PTEX106 ATEX Explosion Proof Telephone is a fixed phone for hazardous areas, certified to ATEX and IECEx for gas Zones 1 and 2 and dust Zone 22. It is built for oil and gas, chemical, power and mining sites, and has an IP66-rated GRP housing that resists impact, shock and corrosion.

The PTEX106 is available as an analogue or SIP telephone, each available in three different colours - yellow, black or orange.

About the PTEX106 ATEX Explosion Proof Telephone

The PTEX106 is built for sites where gas or dust could be ignited by ordinary electrical equipment. Both versions share the same 302 x 240 x 129 mm housing, made from high-impact glass fibre-reinforced polyester (GRP). The housing withstands shock, acids, alkalis and lubricants, and is sealed to IP66 against dust and water jets. All hardware is corrosion resistant.

The front panel has a 20-key stainless steel keypad with dedicated autodial, memory, mute and menu keys, and a back-lit display above it. The handset is high-impact thermoset resin with a noise cancelling electret microphone and a hearing aid compatible receiver, and calls can be switched to the hands-free speakerphone. Both versions can be programmed remotely, and both are field repairable by authorised personnel.

Analogue or SIP - Choosing your Version

The two versions differ in how they connect to your phone system and how they are powered. The Ex certification, keypad, handset and housing are the same.

PTEX106 Analogue

The analogue version connects to any analogue line or analogue extension that supplies 24 to 65 V DC, including the analogue ports on a PBX, VoIP gateway or ATA. It takes all of its power from the line, so no power supply is needed at the phone. It dials in DTMF (tone) or LD (pulse), with a flash time that can be set from 100 to 900 ms to suit your PBX. The ringer reaches about 80 dB(A) at 1 metre.

PTEX106 SIP

The SIP version plugs into your LAN or WAN through an RJ45 port and registers to most SIP-based IP-PBX servers that comply with SIP RFC 3261. It is powered by PoE to IEEE 802.3af, drawing 2.5 W, or by an external 12 V DC supply. Settings, firmware, earpiece volume and microphone sensitivity are all managed over the network through a web browser. Its 128 x 64 pixel display has built-in heating for very cold sites, and the ringer reaches 95 dB(A) at 1 metre.

Why Choose the PTEX106 Explosion Proof Phone:

• Clear Communication in High-Noise Environments - A noise cancelling microphone and a loud ringer for busy plant areas
• Heavy Duty Handset - A high-impact thermoset resin handset, available with a vandal-resistant armoured cord
• Long Life Hook Switch - Rated for more than 1,000,000 operations on both versions
• Central Programming - Phones can be programmed remotely, so settings across a site are managed from one location
• Lines Cleared Automatically - A programmable auto hang-up timer ends the call if a handset is left off
• Surge Protection - Lightning and transient protection to ITU-T K.21 enhanced levels
• Long Service Life - An MTBF of more than 50,000 hours
• Hearing Aid Support -  A hearing aid compatible (HAC) receiver on every version

Hazardous Area Ratings and Approvals

Both versions carry the same Ex markings. For gas atmospheres the PTEX106 is marked Ex eb ib [ib Gb] mb IIC T6/T5 Gb, so it can be used with gas groups IIA, IIB and IIC, including hydrogen and acetylene, within its temperature class. For dust atmospheres it is marked Ex ib [ib Db] tb IIIC T80°C/T95°C Db, covering dust groups IIIA, IIIB and IIIC.

The temperature class depends on the ambient temperature at the installation:

• -40°C to +40°C - T6 for gas and T80°C for dust
• -40°C to +55°C - T5 for gas and T95°C for dust

Both versions also hold EAC and INMETRO certification. The analogue version is CE marked, meets FCC Part 15 Subpart B Class B and has electrical safety to EN 60950.

Who this PTEX106 Explosion Proof Telephone Suits

The PTEX106 is used in the oil and gas industry, on oil fields, drilling rigs, offshore platforms and in refineries, where staff need a fixed line to the control room from inside a zoned area. It is also installed in chemical plants, warehouses, power generation and hydroelectric facilities, nuclear power plants, mines, cement plants and metallurgy works.

Sites with existing analogue cabling or a traditional PBX usually choose the analogue version. Sites that have moved their phones onto an IP network, or want to manage every phone centrally, usually choose the SIP version.

Choosing a Housing Colour

All three colours share the same electronics, specification and certification. Yellow and orange stand out against grey steelwork and pipework, so staff can find the phone quickly. Black is the choice where the phone should match other equipment on site.

Connecting it to your Phone System

The PTEX106 works on any standard analogue telephone line. That includes an analogue extension on a PBX, an exchange line, or an FXS port on a VoIP gateway, analogue telephone adapter (ATA) or IP PBX. The line needs to supply 24 to 65 V DC. Sites moving away from copper exchange lines can keep the phone and connect it through a gateway or ATA.

Dialling switches between DTMF (tone) and LD (loop disconnect pulse). The flash time is 300 ms by default and can be set anywhere from 100 to 900 ms to match your PBX’s transfer and recall timing.

Installation and Mounting

The PTEX106 mounts on a wall or stands on a desk or table. Cables enter through two M20 cable gland entry points, and the unit measures 302 x 240 x 129 mm. The analogue version weighs 7 kg and the SIP version 6.5 kg.

Installation in a hazardous area must be carried out by an installer qualified in hazardous area (Ex) work in line with EN 60079-14.

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