Drager PSS BG4 positive pressure oxygen respirator

Product Overview

Description

Dräger PSS® BG 4 plus

Specially designed for demanding tasks, The Dräger PSS® BG 4 plus closed-circuit breathing apparatus combines uncompromising safety with outstanding respiratory protection and wearer comfort. Innovative in design, it provides the wearer with up to four hours of breathing gas in toxic environments.

Dräger PSS BG 4 plus

Whenever emergency teams are saving lives or extinguishing fires, above or below the ground, the Dräger PSS BG 4 plus comes into its own. Whether used during rescue or fire fighting missions in mines, tunnels or underground train ducts, or in assignments with long access routes, the closed-circuit breathing apparatus is the first choice. More than 25,000 professional users rely on the Dräger PSS BG

Optimized in conjunction with our customers

Our products must meet the precise needs of the user and, for this reason, we involve our customers in the development process. Modifications to the proven Dräger PSS BG 4 are the result of practical experience and constant monitoring to ensure the highest quality standards. We listened to our customers and implemented their requirements in the new Dräger PSS BG 4 plus. Numerous improvements and new accessories have increased safety and durability and further improved the ease of servicing. The modifications are available individually or a as a practical retrofit set upon request.

Excellent suitability for extended use

The slight positive pressure breathing circuit protects the wearer by preventing hazardous substances from entering the sealed breathing system. Depending on the application, the duration of use is up to four hours. A CO2 absorber removes carbon dioxide from the exhaled gas. At the same time the breathing gas is enriched with oxygen from the oxygen cylinder. Before the regenerated breathing gas is inhaled again it flows through the cooler.

Product enhancements

Both the minimum valve, which enriches the breathing gas with additional oxygen upon demand, and its attachment clip have been treated with a special coating to protect against corrosion. A redesigned clip simplifies the fitting of the valve. The area around the pressure reducer has been reinforced and additional reinforcement protects the carrying plate, providing greater stability when handling the unit complete with oxygen cylinder. To reduce the temperature of the inhaled gas and minimize physical stress to the

Practice-oriented innovations

Newly developed heat protection for the breathing hose and housing are also optionally available to further reduce the temperature of the inhaled gas. A T-piece with water trap can be retrofitted to the facemask to prevent water from collecting in the flow area of the device. Any liquid discharged into the breathing circuit from the drain valve is optionally collected in a super absorbent fleece. The

Simple CO2 disposal

Complete with integral dust filter, the flow-sensitive CO2 absorber is available as either a single-use absorber or refillable cartridge. Fitted with a newly designed spring clip, the CO2 absorber offers increased spring durability. The position and size of the breathing hose connectors have also been optimized for easier handling during assembly. For hygienic storage the single-use absorbers are available in a sealed bag.

Proven wearer comfort

The ergonomically shaped carrying plate, the low weight and the proven harness with adjustable shoulder straps and easy to use "pull-forward" design provide more freedom of movement with less effort. The practical breathing hose routing across the shoulders ensures optimum balance on the wearer’s back.

All functions upon a glance

The Dräger PSS BG 4 plus is equipped with the Dräger Sentinel II fully electronic signal and warning unit. Controlled via large push buttons, it combines a multitude of functions. During use it quickly provides the wearer with important information, thereby reducing the risk potential. Using battery warning thresholds the Dräger Sentinal II reliably indicates current operational status.

Monitoring functions:

Cylinder pressure (analog and digital)

Remaining duration of use (time remaining until residual pressure warning)

Temperature indication upon the press of a button

Automatic recording of all mission data optical and acoustic warning signals:

Optical and acoustic warning signals:

Residual pressure warning

Two additional selectable electronic alarm thresholds

Automatic alarm for lack of movement

Manual emergency call alarm

High performance soda lime

Drägersorb 400 has been specially designed for the absorption of CO2 in closed-circuit breathing apparatus which significantly contributes to long-term performance capabilities, especially under the likely conditions of use for the Dräger PSS BG 4 plus. Drägersorb 400 is characterized by a very high abrasion resistance and can, therefore, be used in the apparatus for 6 months, or up to

High performance soda lime

Drägersorb 400 has been specially designed for the absorption of CO2 in closed-circuit breathing apparatus which significantly contributes to long-term performance capabilities, especially under the likely conditions of use for the Dräger PSS BG 4 plus. Drägersorb 400 is characterized by a very high abrasion resistance and can, therefore, be used in the apparatus for 6 months, or up to 300 miles when stored in a vehicle.

 

Easy maintenance

Both the retrofittable vibration protection and the robustly designed locking hinge increase the safety of the Dräger PSS BG 4 plus during transportation. For maximum operational readiness, the Dräger PSS BG 4 plus has been designed to allow the fast assembly and/or removal of device components without special tools.

The full-face mask Dräger FPS 7000 RP

The full-face mask Dräger FPS 7000 ideally complements the Dräger Panorama Nova product family. With an improved head harness and available in various sizes, it adjusts perfectly to every face shape. With its dual sealing line, the almost natural field of view and easy-to-operate wiper, the FPS 7000 RP ensures a safe tight fit and good all-around visibility. An optional adapter enables the connection of the comfortable CamelBak* drinking system. Liquid only flows through the straw when the integrated biting valve is pressed together by the teeth.

 

Technical Parameter:

1, Working principle

A closed circuit positive pressure oxygen respirator, in which the breathing gas flows in a closed circuit, and the exhaled gas flows through a CO2 absorption tank. The CO2 is absorbed by the absorbent, and then the gas flows into the breathing bag. The device automatically supplies fresh gas into the respiratory cycle, and then the gas flows through a cooling box to reduce the temperature of the inhaled gas. When the respiratory rate is low, the quantitative oxygen supply valve provides oxygen, and when the respiratory rate is high, the automatic oxygen supply valve or manual supply valve provides additional oxygen supply. The respiratory circuit always maintains a slightly higher positive pressure than the outside world to ensure that toxic gases are blocked from entering the respiratory circuit and ensure respiratory safety.

2, Application: Can be used in firefighting, coal mining, and rescue systems;

3, Structure: The closed circuit breathing air supply system consists of a fully enclosed mask, breathing hose, high-pressure oxygen cylinder, pressure reducing device, CO2 absorber, specialized agent, breathing airbag, cooling box, and electronic monitoring device.

4, Complete set of performance: light weight, high temperature resistance, flame retardant, anti-corrosion, waterproof, good airtightness, internal cooling, and long service time (up to 4 hours).

(1). The entire set weighs 15.5 kilograms, including a mask, a fully charged gas cylinder, CO2 absorbent, and 1.32 kilograms of water ice.

(2). Size approximately 570 x 425 x 175 mm

(3) . The overall use of safe and environmentally friendly materials - no odor, no toxicity, no pollution

5, Mechanical pressure gauge, electronic alarm, does not consume oxygen, does not discharge pure oxygen, and has no explosion risk. Display pressure: 0 to 30MPa

A red warning is marked at 20MPa and below 5.5MPa. No grease is required

6,The electronic alarm ensures explosion-proof performance, using designated batteries: Duracell Procell MN1500 LR6 AA, IP67 waterproof and dustproof grade

Equipped with the following alarm functions:

Alarm when opening the bottle valve (4 bar);

First level alarm, when the oxygen pressure drops to 5.5MPa (55 bar), approximately 75% of the oxygen is consumed, and the alarm lasts for 30-60 seconds;

Level 2 alarm, when the oxygen pressure drops to 1MPa (10 bar), approximately 95% of the oxygen is consumed, and the alarm continues until the cylinder is closed;

Alarm when bottle valve is closed (2 bar);

Alarm when the air valve is closed but breathing is detected, fully compliant with MT867 standard;

When breathing is detected, a double beep sound is emitted every 4 seconds;

Alarm when the battery voltage drops below 4.3V;

The beep repeats every 4 minutes and lasts for 20 minutes after the cylinder is closed

7,Backplane and shell

(1), Forward sloping back panel, wide shoulder straps with padding, comfortable to wear, and adjustable shoulder straps. The belt is wide with padding, shock absorption and buffering mechanical force, and the tightening mechanism of the belt adopts a forward pulling method, which is very fast and convenient; Metal buckle; Material flame retardant. The backpack shell fits the back of the human body, providing comfortable carrying.

(2) ,The shell adopts injection molding technology and is made of PA66+30% fiberglass, which is sturdy and durable. There are orange red and white fluorescent signs on the back panel shell, making it easy to distinguish and search in dark environments. The opening of the casing requires no tools and can be manually operated.

8, Mask

(1) The mask material can be selected, such as EPDM or silicone rubber. The standard configuration of the mask is a defogging wiper. The standard configuration comes with a neck strap. The mask has a double-layer sealing edge, and the sealing frame fully accommodates the entire face without any pressure. The inner side of the mirror is coated with scratch resistant coating.

(2) Large panoramic screen with good visibility. The screen is fixed by a stainless steel frame, which is sturdy and durable; It has characteristics such as impact resistance, wear resistance, resistance to aging, and resistance to high and low temperatures.

(3) The five point headband is easy to quickly wear and remove. The mask is soft, with a shape that fits the mouth and nose, and is well sealed.

9, CO2 absorption device

Reduced oxygen exhalation volume without sacrificing respiratory performance, resulting in low CO2 concentration. There are two options for CO2 absorption devices: a disposable absorption tank with a 4-year warranty, certified by EN and NIOSH; A reusable absorption tank that only needs to be updated with the absorbent. The absorption tank has a size of 230 x 150 x 280 millimeters, a weight of approximately 0.6 kilograms, and a capacity of approximately 3 liters. The absorption tank is easy to install without the need for tools. The CO2 absorption tank is equipped with a dust filter to prevent dust from entering the breathing circuit. The unopened warranty period of the absorbent is 4 years, the unopened warranty period is 3 months, and the filled warranty period is 24 hours. No gloves are required to fill the absorbent. The absorption tank is compatible with absorbents from domestic manufacturers. Delge absorbents come in three different weight packaging options.

10,Cooling system

(1) To reduce the temperature of the exhaled gas, reduce physiological burden, and make breathing more comfortable, ice cubes can be added to the built-in cooling box.

(2) There are three options for the cooling system: using homemade water ice, which is the most economical way; Use blue ice; Using a regenerative cooling device, there is no need to prepare ice or blue ice, let alone replace ice cubes. It can be used infinitely, stored at 20 ° C for 5 hours to reactivate, without freezing, with a melting point of 37 ° C.

11,Breathe

(1). The breathing airbag should be detachable without the need for tools, easy to clean, and its position should be obvious for visual inspection. The breathing airbag is a positive pressure type (equipped with a spring outside the airbag), ensuring that the pressure in the respiratory system is slightly higher than the outside, ensuring the safety of the user; The airbag volume is 5.5 liters.

(2). The breathing and suction hoses are symmetrical on the left and right sides, each with three support rings to prevent compression. They are balanced on both sides of the shoulder and are located above the shoulder, making it easy to crawl unobstructed when passing through narrow areas by simply removing the backpack shell.

(3). The disassembly and assembly of breathing hoses do not require the use of tools.

(4). There is a positioning label on the breathing hose to ensure its installation direction is correct and not twisted.

(5). Quantitative oxygen supply: When the quantitative oxygen supply is greater than 1.4 liters/minute, it can reach 1.5 liters/minute even at a pressure of 20 bar. Manual supply valve: The flow rate of the manual supply valve is greater than 80 liters/minute.

(6).Drain valve: The water generated by the entire respiratory system should be automatically discharged from the respiratory airbag.

12, Oxygen cylinder: The oxygen cylinder is made of carbon fiber with a capacity of 2 liters and 200 bars,.

13, Operating and storage temperature

(1) Operating temperature -20~60 ℃

(3) Storage temperature -40~60 ℃

14, Maintenance

(1) Easy maintenance without the need for tools.

(2) Diverse selection of testing equipment, such as the Test-it6100 or Tester series.

15, Certification conditions

(1) Chinese Coal Industry Standard MT-867

(2) China Fire Certification GA632

(3) Complies with the European EN145 standard for isolated oxygen respirators

(4) Comply with the Executive Standards for Electromagnetic Radiation Testing (SGS):

EN 61000-6-2:2005

EN 61000-6-3:2007

(5). Compliance with drop test execution standards:

EN 23269-1, ISO 16900-6