Project Telecom PTEX106-CB ATEX Explosion Proof Telephone

The Project Telecom PTEX106-CB ATEX Explosion Proof Telephone is a hotline phone for hazardous areas that calls a set number as soon as the handset is lifted. It is certified to ATEX and IECEx for gas Zones 1 and 2 and dust Zone 22, and has an IP66 SMC glass fibre-reinforced plastic enclosure. The PTEX106-CB is offered as an analogue or SIP telephone, both connection options are available in three colour options - yellow, black or orange.

About the PTEX106-CB Explosion Proof Telephone

The PTEX106-CB has a plain stainless steel front panel with no keypad, so there are no buttons to press, wear out or get wrong in an emergency. The enclosure is SMC glass fibre-reinforced plastic, which is impact and shock resistant and stands up to acids, alkalis and lubricants. It is sealed to IP66 to IEC 60529, and all hardware is corrosion resistant.

The handset is fitted with a noise-cancelling microphone, a hearing aid compatible receiver and an 80 cm armoured cord. It sits in a cradle with removable retainer latches, and the cradle switch is rated for more than 1,000,000 operations. Calls can be held on the handset or switched to hands-free, and advanced noise reduction keeps speech clear on HD calls.

How the Lift-to-Call Hotline Works

Each PTEX106-CB is programmed with the number it should call, such as a control room, gatehouse or site emergency line. When someone lifts the handset, the phone dials that number automatically after a short programmable delay. If the first number does not answer, the phone can move on to further numbers in sequence.

This makes the PTEX106-CB an ideal choice for emergency and assistance points, where the caller may be under pressure, wearing gloves, or unfamiliar with the site's phone system.

Analogue or SIP - Which Version of the PTEX106-CB to Choose:

Both versions share the same hotline operation, enclosure, handset and Ex certification. They differ in how they connect and how they are powered.

PTEX106-CB Analogue

The analogue version works with all standard PABX systems and takes its power from the telephone line, at 24 to 65 V DC and 20 to 100 mA. It dials in PD (pulse) or DTMF to ITU-T Q.23, set through the menu, and can be programmed remotely using DTMF tones. It can also make scheduled test calls to the central control phone to confirm it is working, and can power a light fitted on top of the phone from the line, with no extra supply. The ringer reaches 80 dB(A) at 1 metre.

PTEX106-CB SIP

The SIP version connects to your network through a 10/100Base-T RJ45 port and registers to most SIP-based IP-PBX servers that comply with RFC 3261. It runs on PoE to IEEE 802.3at, or on a 12 V DC adapter, and uses 1.5 W at idle. It supports up to 4 groups of sequential calling, switches automatically to a backup SIP server if the primary server is unavailable, and can power external loudspeakers from PoE. Setup, firmware uploads and diagnostics are handled through a web browser, and the ringer reaches 90 to 95 dB(A) at 1 metre.

Why Choose the PTEX106-CB Explosion Proof Phone

• Calls Placed without Dialling - The phone auto-dials with a programmable delay as soon as the handset is lifted
• Clear Speech on HD Calls - Advanced noise reduction and a noise-cancelling microphone cut background noise
• Handset built for Heavy use - An 80 cm armoured cord protects the handset connection
• Built-in Line Checks - The analogue version can make scheduled test calls to the central control phone
• Server Backup - The SIP version switches automatically between primary and backup SIP servers
• Alerts without Extra Wiring - The analogue version powers a top-mounted light from the line, and the SIP version powers external loudspeakers from PoE
• Long Cradle Switch Life - Rated for more than 1,000,000 operations
• Hearing Aid Support - The receiver is hearing aid compatible (HAC)

Hazardous Area Certification and Approvals

The PTEX106-CB holds ATEX, IECEx, EAC and INMETRO certification. Its gas marking is Ex eb ib [ib Gb] mb IIC T6/T5 Gb, which covers gas groups IIA, IIB and IIC. Its dust marking is Ex ib [ib Db] tb IIIC T80°C/T95°C Db, which covers dust groups IIIA, IIIB and IIIC. Both versions are certified for gas Zones 1 and 2 and dust Zone 22, and the SIP version's datasheet also lists dust Zone 21.

The temperature class is set by the ambient temperature at the installation:

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

The analogue version has lightning and transient protection to ITU-T K.21 enhanced levels.

Who the PTEX106-CB Suits

The PTEX106-CB suits safety and site managers who need a simple, dependable way for anyone on site to reach help from inside a zoned area. Typical locations are emergency points, walkways, process areas and remote parts of a plant, where a direct line to the control room matters more than a full keypad.

It is used in chemical plants, oil refineries, oil fields, offshore drilling platforms, nuclear power plants, mines, heavy industry and metallurgy works. Choose the analogue version for sites running a traditional PABX, and the SIP version for sites with an IP-PBX and PoE network.

Housing Colours

The PTEX106-CB is available with a yellow, black or orange housing in both the analogue and SIP versions. The colour does not change the specification or certification. Yellow and orange make an emergency hotline easy to spot, while black suits areas where a less prominent phone is preferred.

Installation and Mounting

The PTEX106-CB is wall mounted using a mounting bar. Cables enter through two M20 cable gland entry points. The unit measures 303 x 240 x 129 mm and has a net weight of 8 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.

• Project Telecom PTEX106-CB Explosion Proof Telephone
• Analogue or SIP - Select at Checkout
• Yellow, Black or Orange - Select at Checkout