Company News

Modular SDC

Posted by Grahamne Muir

  • 15th October 2015
  • Divex
  • no comments

Each Submersible Diving Chamber (SDC) is designed to deploy 3 divers, with diver one and two’s umbilical’s housed within the SDC.

It is also designed to withstand both internal and external pressure to 300 MSW and has a design temperature of -18 deg to +66 deg.

Each SDC is of “sinker” design without releasable ballast or attachment points and has an internal volume of 6m3 and 1900mm internal diameter.

The bottom door is a double acting castellated design with hydraulic actuation. The SDC has a retractable stage which is deployed during the launch.

The bell is equipped with a Mara 3-diver distribution panel for diver gas supply, DH21 Heaters and scrubbers for emergency life support and LP-20 lights. Externally the SC is fitted with a Divex emergency battery pack and Aquabeam 500w external lighting.

Aquabeam LP-20 low Profile Hyperbaric Light

Posted by Grahamne Muir

  • 9th October 2015
  • Divex
  • no comments

The Aquabeam LED LP-20 is a low profile hyperbaric light fixture designed specifically for installation within the limited confines of the SDC’s and DDC’s.

The LP20 light offers a high, well diffused output with maximum safety and easy servicing. The lamphouse embodies a toughened, frosted lens and is fitted with a relief valve to eliminate a post compression explosion.

Divex 15 Hookah

Posted by Grahamne Muir

  • 8th October 2015
  • Divex
  • no comments

The Divex Hookah Compressor, Model 150-15, (150psi / 15cfm), has been designed as a low pressure breathing air compressor for use in civil engineering diving, scientific diving, and other shallow water diving operations.

This lightweight and small unit make it ideal for both portable and static applications, and provides breathing quality air to BS4001.

Low-Impedance Bull Horn Extension Speaker

Posted by Grahamne Muir

A compact, low impedance, Bull Horn extension speaker with adjustable pedestal. Constructed in plastic. Ideal for air chamber internal communications.

3 Channel Diver Radio

Posted by Grahamne Muir

  • 7th October 2015
  • Divex
  • no comments

Divex has added to their existing range of communications products by designing a 3 channel diver radio which provides superior quality communications between up to 3 divers and the dive supervisor.

The diver radio is battery operated, housing two batteries and a three stage smart battery charger within the case. The built in batteries will provide in excess of 10 hours constant communication between the supervisor and three divers, and the three stage smart charger will charge the batteries from a fully discharged state in approximately four hours. A battery monitor provides a visual indication of the battery status at all times when the power switch is in the “on” position.

The diver radio supports 3 channels which are Diver 1, Diver 2 & Diver 3. Each Diver channel has industry standard banana sockets for connection of the diver’s umbilical, and both 2 wire and 4 wire comms can be used. When using two wire comms the umbilical is plugged into the red (microphone) socket only and when using 4 wire comms the umbilical is plugged into both the red (microphone) sockets and the black (headphones) sockets.

Diver Round Robin is also available which allows diver to diver communications, this is selected by switching the Diver R-R switch to the “on” position.

The supervisor can choose between using the handheld microphone & panel speaker or switch to headset only. When the speaker switch is in the “on” position, comms to the speaker can be heard and the supervisor will use the handheld mic PTT to talk to the divers. When the speaker switch is in the “off” position a headset with an in line PTT switch can be used. A panel mic is also available for use if the handheld mic or headset are not available. The volume to the panel speaker or supervisor headset is controlled by the supervisor volume pot.

The supervisor can choose to communicate with each diver individually or to all at the same time. The diver select switch is used to select which diver the supervisor is communicating with, either diver 1, diver 2, diver 3, or all can be chosen.

The record out socket can be used as an output to a recording device.

Features include

  • Housed in the acclaimed Storm Peli Case.
  • In excess of 10 hours usage before charging is required.
  • Quick charge time.
  • Custom battery monitor providing constant battery status.
  • Selector switch for choosing individual or all diver communications.
  • Individual volume controls allows better control for the supervisor.
  • Single or double earpiece Headsets, Panel mic/speaker and handheld mic options.
  • Diver to Diver communications.
  • 2 or 4 wire operation.

2 Channel Chamber Radio

Posted by Grahamne Muir

Divex has added to their existing range of communications products by designing a 2 channel chamber radio which provides superior quality communications between chamber occupants and a supervisor.

The chamber radio has been designed to provide communications between the chamber supervisor and the chamber occupants. Typically used on a twin lock air chamber the chamber radio provides a reliable and excellent audio quality link between chamber and surface. It is manufactured into a 19” half subrack for installation into the smallest of spaces, and, with the same audio quality as the Divex range of HeliCom unscramblers, it is one of the best chamber radios the market has to offer.

The chamber radio supports 2 channels which are typically Main Lock & Entry Lock. Each lock is installed with a chamber comms box and speaker which connects to the rear of the chamber radio.

The supervisor can choose between using the panel microphone & speaker or headset by means of a push button switch. Communications from the chamber takes priority and is open for the supervisor to hear, the supervisor uses the panel press to talk (PTT) or headset PTT to communicate with the chamber occupants. Individual volume controls are available for both chamber locks and the supervisor, and a selector switch allows the choice of communication with either lock individually or both at the same time.

Features include:

  • Housed in a standard 19” half rack which is 3U high.
  • Simple installation with only 2 signal cables and a power cable.
  • Standard IEC power inlet for main power supply.
  • Auto ranging power supply with input range of 85VAC to 264VAC which enables the use of 110VAC & 230VAC as supplied on most dive sites/vessels.
  • Selector switch for choosing individual lock or both locks.
  • Individual volume controls allows better control for the supervisor.
  • Headset or panel mic/speaker.
  • Noise cancelling headset with boom mic supplied as standard.

Helicom Saturation Control Unscrambler

Posted by Grahamne Muir

  • 6th October 2015
  • Divex
  • no comments

The SC HSU is designed for helium speech communications with the occupants of a two compartment saturation deck chamber. It also provides a bunk entertainment channel.

Operating Modes

  • The chamber attendant uses a master PTT for broadcast communications with Main Lock, Entry Lock and Bunk channels.
  • The chamber attendant uses an individual PTT switch for dedicated communication with each channel.
  • All channels have four wire communications with uplink signal priority and each is equipped with a dedicated volume control with minimum listening level.
  • All channels have independent uplinkand downlink signal volume controls to
    optimize communications.
  • Main lock and Entry lock channels connect to a chamber comms box and speaker box which consists of a loudspeaker, Electret microphone, volume control and push-button call facility for the occupants to call the chamber attendant. 3.5mm jack sockets also allow comms to be transmitted to a headset.
  • Bunks channel is configured with headset connection only and can be used for communications and entertainments, volume control is available to the earphones. There is also a push-button call facility.

A front panel loudspeaker allows the chamber occupants’ speech to be audible to the chamber attendant independently of his headset in all modes of operation. An on/off switch allows the loudspeaker to be switched off as required.

DSP Helium Speech Unscrambler Circuit Uplink signals from the chamber occupants are mixed in an audio mixer before decoding to the selected gas and environmental settings by a digital signal processing (DSP) circuit.

An LCD display is provided for monitoring helium speech decoding settings. Adjusting settings is easily accomplished by means of a front panel depth setting potentiometer calibrated 0 msw to 400 msw in 50 msw increments and a user-friendly keypad for PPO2, pitch reduction and temperature settings.

An unscrambler on/off switch allows the DSP helium speech unscrambler circuit to be bypassed when communications are in the air range or when unscrambling is not required

Integrated Saturation Control

Posted by Grahamne Muir

Control of the DDCs will take place on the same deck as the chambers themselves. The control system can be fully automated or use a conventional direct control approach.

The Chamber Control System is fitted with 0.25% accurate large format digital depth displays for each system lock and incoming HP gas regulator panel, gas analysis panel and electrical control panel. Mix 1 and 2, Heliox, helium, oxygen and therapeutic gas are supplied in each section of the DDC control panel.

Standard Analox G22 (O2) and G30 (CO2) analysers are located in a central analysis rack in Chamber Control. The gas sample lines from each chamber are run to the Analysis Rack and are manually selected to monitor the selected chamber compartment.

The diver communications uses the latest digital Divex HeliComTM Unscramblers.

Real time audio/video monitoring will be held on hard disc with re-writable DVD recording.

Modular Control Container

Posted by Grahamne Muir

The Saturation Control Console has been ergonomically designed and assessed and is installed in a lined, air conditioned, purpose-built control room sited ideally adjacent to the Chamber complex.

The Chamber Control System is fitted with 0.25% accurate large format digital depth displays for each system lock and incoming HP gas regulator panel, gas analysis panel and electrical control panel. Mix 1 and 2, Heliox, helium, oxygen, and therapeutic gas are supplied in each section of the DDC control panel.

Standard Analox G22 (O2) and G30 (CO2) analysers are located in a central analysis rack in Chamber Control. The gas sample lines from each chamber are run to the Analysis Rack and are manually selected to monitor the selected chamber compartment.

The diver communications uses the latest digital Divex HeliComTM Unscramblers.

Real time audio/video monitoring will be held on hard disc with re-writable DVD recording.

The Dive Control console has been ergonomically designed and can be installed either in a dedicated control room or co-located with the saturation control panel in a separated section of the control room.

The Dive Control Console uses conventional direct control technology similar to the Chamber Control System and the console layout meets the latest ergonomic thinking which places the most commonly used video monitors in front of the Supervisor along with key operating information such as alarms and depth displays.

These bring together all the information and control functions required to safely and effectively manage the SDC operations. This includes provision of screen space built into the console for Project Information such as crane data (screen and data supplied by Client). Final Layout is determined in close consultation with client user groups.

Diver video and Diver communications are continuously recorded directly to hard disk and to DVD-HDD.

Diver video can be fed to external viewing and recording systems via matrix switching supplied as an integral part of the system.


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