RAM 744 Series
Respiratory Air System

Manufactured by GfG

Clean Air And Peace Of Mind
The RAM 744 monitor is designed to satisfy OSHA monitoring requirements for Grade "D" breathing air. Utilizing a MOS Broad Range sensor, the monitor not only alerts the user to excessive carbon monoxide levels that enter the airline system, but also organic vapors such as solvents and hydrocarbons that are present after the air has been filtered. Operating from a 110V AC or rechargeable NiCad battery power source, this unit is able to activate optional devices like an air horn that is safe in explosive environments such as paint booths. A simple calibration system, alarm contacts and compact size make the RAM 744 ideal for many applications. The design of the RAM 744 requires mounting with a GfG 25, 50 or 100 CFM airline filter system.

Respiratory Air Specifications
The Instrumentation Air Breathing Line Instruments satisfy the requirements of OSHA rule 29 CFM 1910.134 (d) (2) (ii) for carbon monoxide monitoring. They will also monitor Grade E air which is generally specified for breathing air in cylinders (SCBA).

Carry-Air Portable Filter Panel Options:
9025 (25 CFM), 9050 (50 CFM) and 9100 (100 CFM)
The highly portable Carry-Air encloses the three stage 25 or 50 CFM filter panels with the RAM 744 monitor in a convenient and durable carrying case. Designed to operate with the case closed, the 9025, 9050 and 9100 have a single male quick connect inlet and four female quick connect outlets. Externally mounted On/Off/Test switch, alarm light, and horn make the operation and monitoring of the system convenient. Internally, the monitor is powered by a rechargeable NiCad battery pack.

Application
The RAM-744 is an inline, respiratory air monitor for protection from carbon monoxide in compressor supplied breathing air. This instrument should be used to continuously monitor for carbon monoxide in the compressor supplied breathing air. Random sampling only checks the air at that moment. It is possible for any air compressor to draw carbon monoxide in via the air intake at any time. The RAM-744 will operate continuously and provide both a visual and audio alarm if carbon monoxide levels exceed the pre-set alarm level. An auxiliary relay allows for the connection of a remote device. The RAM-744 has been designed for use both indoors and out and will withstand water splashes or droplets but it is not water proof and should not be subjected to direct spray or submersion.

General Description
The RAM-744 is a compact monitor, designed for use in portable and stationary applications. It is designed to be installed inline via a ˝" NPT inlet and outlet fitting and should only be used in conjunction with an acceptable filter panel that contains a coalescing and carbon filter. The RAM-744 is easily operated with one button and a rotary cam valve switch. All user functions are affected directly by means of these two switches.

Detection Principle
The RAM-744 measures carbon monoxide, using an electrochemical sensor. The electrochemical sensor consists of an electrolyte, a working electrode (anode), and a counter electrode (cathode). Selection of specific electrodes and electrolytes make the sensor suitable for the gas to be monitored. The conversion of the gas between the electrolyte and the electrode generates an electrical signal which is proportional to the gas concentration. GfG's electrochemical sensors operate on the capillary diffusion barrier technology.

• Meets OSHA Requirements for Compressed Air
• Continuous Monitoring of Breathing Air
• CO and Organic Vapor Detection
• Simple Calibration and Maintenance
• Three Stage Filtering

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