Natural gas sampling standards (GPA 2166 and API 14.1) recommend
that before using the fi ll and empty method to collect a sample, the
cylinder must be preheated to a temperature above the hydrocarbon dew
point of the fl owing gas stream. The GCH500 provides a simple, effi
-
cient solution to cylinder preheating. It consist of a heater enclosure and
a controller. The sample cylinder is preheated inside your vehicle on the
way to, or at, the sample location. Heating takes about 10 minutes. To
use the GCH500 just insert a clean empty cylinder into the heater enclo-
sure and connect the controller cable to the heater. Power for the heater
is taken from a vehicle 12 volt power point or cigarette lighter plug.
While heating, the sample cylinder’s temperature can be monitored us-
ing the controller’s display. When fully heated, the controller will keep
the cylinder at the set temperature (140°F) until you are ready to discon-
nect the controller from the heater and take the sample. The hot cylinder
stays in the heater enclosure until the sampling process is fi nished to
provide a safe method to handle the heated cylinder while taking the
sample without the need for gloves.
GCH500
500cc Gas Cylinder Heater
Operator’s Manual
• Designed to preheat a standard 2” OD 500cc gas sample cylinder
• Low power (100 wa s @ 12V DC) plugs directly into a cigare e
lighter
• Works with either stainless steel or aluminum cylinders
• Quickly preheats cylinder to 140°F,
Cold to Hot in about 10 minutes
• Microprocessor based temperature controller with digital tempera-
ture display
• Rugged plas c case provides a safe compact environment for heat-
ing the cylinder plus a safe and durable method for handling the
heated cylinder
• Enclosure insulates heated cylinder to allow for addi onal hot sam-
pling me
• Four heaters and four temperature sensors help insure uniform
hea ng of the sample cylinder
• Increased safety provided by thermal fuses and transient protec on
diodes
Overview
Features
130-0036 Rev 2,
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