Robinair 16910 ID Plus Refrigerant Identifier - Manual (Page 7)

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Unit Description
The instrument provides the option to purge sample refrigerant sources of air
contamination down to levels set by the user. Air purging is completely automatic
and requires no intervention by the user other than telling the instrument to begin the
purging process.
The instrument is supplied complete with R-12 and R-134a sample hoses, an R-134a
adapter fitting to permit sampling of ACME-ported cylinders, a purge vent hose, a power
cord, and all required plumbing housed within a rugged portable case.
Refrigerant Identification
Sample gas is admitted into the instrument through the supplied sample hose and
is presented to the sensing device. The instrument provides the user with direct
percent-by-weight concentrations of R-12, R-134a, R-22, and hydrocarbons. If the
sample is determined to be pure R-12 or pure R-134a, the instrument also provides 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 refrigerant recycling
equipment or by the purging feature of the instrument itself. Since air is not considered a
contaminate, it is possible to read 100% R-12 plus 5% air. The instrument only considers
the weights of refrigerant contaminates in the total mixture.
The instrument interfaces with the user through the use of a 2-line, 16-character,
alphanumeric display, status indicator lamps, pushbutton communication switches, and
an alarm. Alarm indications are provided to alert the user of instrument fault conditions,
potentially flammable refrigerant presence, and contaminated refrigerant presence. Direct
percent-by-weight concentrations of sample refrigerant are provided on the display, as
well as user directions and prompts. A printer port is supplied with the instrument that
interfaces with most parallel port printers.