- Inside the bell, the monitor will rapidly detect the presence of vaporized hydrocarbons, and will activate audible and visual alarms before the anesthetic threshold is reached
- Designed to operate to depths up to 1926 ft. / 587 m
- Automatic correction of pressure and temperature effects ensures the analyzer will offer optimum performance in this difficult environment
- Gas alarm level is preset to 10% of the anesthetic dose of vaporized hydrocarbons that could be present in the diving bell
- For diving in areas where contamination is known to be from 1 or 2 compounds, an alternative alarm set point could be calculated by Analox
- Internal sample pump to ensure a fast response to hydrocarbons
- Response Time: The sensor is located within the diving bell rather than relying on an umbilical fed analyzer as anesthesia (or the effects) can occur within a few breaths
- Datalogging: The Hyper-Gas MkII is fitted with a factory set datalogging facility
- Optional Topside Repeater mounted at the surface mimics the conditions inside the bell
- Familiarization DVD: Part Number 9300-4050
- Data Disc: Part Number SA2HGDATA
- Bell Monitor Connect Cable: Part Number SAEPHC2603
- Comms Lead: Part Number SA2HC603A
- USB Lead: 9300-4025
- Steel Bolts for mounting
- Hand book and manual
- Test Certificate
- Operating Range: Hydrocarbon (e.g. 0-30% Propane); Pressure: 1-60 barA
- Power Supply: External: 8-30 VDC
- Temperature: Compensated: 41° to 95° F (5° to 35° C); Storage: 4° to 131° F (-20° to 55° C)
- Humidity: 0-95% RH Non Condensing
- Dimensions: Bell Monitor 8.46in H x 7.87in W x 3.93in D (215 mm x 200 mm x 100 mm)
- Dimensions: Topside Repeater 6.29in H x 7.48in W x 3.93in D (160 mm x 190 mm x 100 mm)
- Weight: Bell Monitor <5.5lbs (2.5kg), Topside Repeater <4.4lbs (2.0kg)
The Analox Hyper-Gas MkII is designed to detect and warn divers of potentially fatal anesthetic levels of hydrocarbons in the diving bell. Where divers are working on dirty sites, there is the likelihood for contamination of the bell atmosphere from vaporization of contaminants carried on dive suits and umbilical lines, even when divers are wearing additional safety dive suits.
In the presence of anesthetic levels of volatiles divers can suffer the effects within a few breaths. Even before unconsciousness, the ability to react normally becomes impaired. The effects caused by sub anesthetic levels can be compared with the pattern of behavior caused by alcohol consumption.
The following effects have been detailed by Fang et al. (1996);
- 33% of the anesthetic level of toluene leads to hyperactivity.
- 13% of the anesthetic level of xylene causes tremors which could impair purposeful actions.
- 44% of the anesthetic level of benzene causes uncontrolled jerking of limbs.
- 52% of the anesthetic level of cyclo-hexane causes convulsions.
The Hyper-Gas MkII™ system has been designed to operate to depths up to 60 Bar A. It uses a unique hyperbaric hydrocarbon sensor based on highly respected Analox infra red technology. The sensor is sensitive to a range of hydrocarbons, and is able to detect all those commonly given off by the vaporization of crude oil or condensate.
Topside engineer checking topside repeater unit automatic correction of pressure and temperature effects ensures the analyzer will offer optimum performance in this difficult environment.
The gas alarm level is preset to 10% of the anesthetic dose of vaporized hydrocarbons that could be present in the diving bell. The sensor gives an additive response to the range of hydrocarbons normally present, not one individual compound. For diving in areas where contamination is known to be from 1 or 2 compounds, an alternative alarm set point could be calculated by Analox.
The sensor needs to be mounted within the diving bell, rather than relying on an umbilical fed analyzer because anesthesia, or the effects of sub anesthetic levels can occur within a few breaths, i.e. a few seconds. By analyzing for hydrocarbons at the surface its likely that the effects would occur before an alarm is raised. A rapid response is crucial. The Hyper-Gas MkII™ has been designed with an internal sample pump to ensure a fast response to hydrocarbons.
The Hyper-Gas MkII™ system is fitted with a factory set datalogging facility. This logs and measured levels of hydrocarbons, the depth and the corresponding data and time. Once the datalogging capacity is exceeded the Hyper-Gas MkII™ will automatically overwrite the oldest data. Data can be downloaded via the topside repeater or bell monitor onto a PC, using the data communications cable, and the datalog retrieval program.
Note: We strongly recommend that for every Bell monitor purchased that customers purchase a spare Replacement Manifold too.
Brand Analox Video No