1-3
WEIGHT OF CHILLGARD
RT WITH SEQUENCER
TRANSPORT AND STORAGE CONDITIONS
-67°F to 158°F (-55°C to +70°C)
*This unit has not been evaluated by Underwriters Laboratories, Inc.
**For UL2075 testing from 50°C to 61°C, the Temperature Effect is +0.6%/°C of reading
and +1 ppm/°C
For the Chillgard RT Remote Relay* unit option, see Appendix B, "Relay Module."
Th
e Chillgard RT Monitor is intended for indoor use in mechanical
equipment rooms housing air conditioning or refrigeration equipment or
for use in areas where bulk refrigerants are stored.
The m
onitor uses infrared sensing technology, allowing accurate
measurement of refrigerant vapors with minimum interference from
other vapors. Your Chillgard RT unit is factory-calibrated for a specific
refrigerant. It is extremely sensitive, capable of measuring down to 1
part per million (ppm). The unit monitors the signal and can operate
three alarm levels at software-selectable gas concentration values.
There is also a trouble indication to alert the operator when something
is wrong with the unit.
Identifying Your Unit
Multipoint Sequencer
The Chillgard RT Refrigerant Monitor is capable of monitoring different
types of refrigerants. However, each unit is factory-calibrated to detect
one type of refrigerant.
Check t
he label inside the front door to determine what gas your unit is
designed to detect (FIGURE 1-1). For specific guidelines on using the
RS232 function (serial communication port), see Appendix C. For
specific guidelines on the multi-refrigerant version of the Chillgard RT
Monitor, see Appendix D.
The uni
t monitors only one zone or location, but your instrument may
contain a Multipoint Sequencer capable of monitoring up to four or eight
different zones or locations. To determine the number of sampling
locations your particular unit is able to monitor, carefully tilt the unit and
count the number of inlet ports at the bottom of the case (FIGURE 1-2,
1-3 or 1-4).
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