Manual Part Number:
5-06-7000-65-0
Manual File:
MN-A-0117 Rev. D
Revision Date: August 24, 2006 Page 1-9
1 INTRODUCTION AND OVERVIEW
1.1 General
Contamination of refrigerants either in storage cylinders or vehicle air conditioning systems can
lead to component corrosion, elevated head pressures and system failures when utilized by
unsuspecting technicians. The ability of the technician to determine refrigerant type and purity is
severely hampered by the presence of air when attempting to utilize temperature-pressure
relations. The development of various substitute refrigerants further complicates the ability of a
technician to identify refrigerant purity based upon temperature-pressure relationships. The
substitute refrigerant blends can also introduce a flammability hazard to the technician and the
ultimate end user of the vehicle air conditioning system.
The Neutronics Ultima ID Refrigerant Identifier will provide a fast, easy and accurate means to
determine refrigerant purity in refrigerant storage cylinders or directly in vehicle air conditioning
systems. The instrument utilizes non-dispersive infrared (NDIR) technology to determine the
weight concentrations of refrigerant types R12, R134a, R22, as well as, hydrocarbons and air.
Refrigerant purity is automatically determined for refrigerants R12 and R134a by the instrument
to eliminate human error. Pure refrigerant is defined as a refrigerant mixture that contains 98%,
by weight, or greater of either R12 or R134a.
The instrument is supplied complete with a R12 and R134a sample hose, a R134a adapter fitting
to permit sampling of ACME ported cylinders, a 12 VDC power cord and all required plumbing
housed within a rugged, portable, storage case.
Sample gas is admitted into the instrument through the supplied sample hose and presented to the
sensing device. The instrument provides the user with direct percent by weight concentrations of
R12, R134a, R22 and hydrocarbons. If the sample is determined to be pure R134a, the
instrument will provide a direct readout of the weight percentage of air within the sample. Note
that the instrument does not consider air to be a contaminate since it can be removed by most
refrigerant recycling equipment. Since air is not considered to be a contaminate, it is possible to
read 100% R134a plus 5% air. The instrument only considers the weights of the refrigerant and
contaminates in the total mixture for R134a as air contamination in R12 systems causes only
minor performance degradation.
The instrument interfaces with the user with an LCD graphic display, status indicator lamps, push
button communication switches and an alarm horn. Alarm indications are provided to alert of
instrument fault conditions or contaminated refrigerant presence. Direct percent by weight
concentrations of the sample refrigerant is provided on the display as well as user directions and
prompts. An optional on-board printer (Model RI-2004DXP) is available to print on-the-spot
customer confidence receipts.
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