Automatic Remote Gas Calibrator (ARGC) 0 pages

Combustible Gas
ARGC
Features
• Capable of being actuated
electronically
• Easy to install
• Two-part design for gas
application
• Checks integrity of the gas
sensor diffusion path
Benefits
• When used with S4000CH,
allows operators to calibrate
detector via HART or Modbus
• No electrical wiring or
connections
• Easy to calibrate sensor in
remote locations
• Fail safe operation
Description
To verify the proper operation of a catalytic
combustible gas sensor, it is necessary to periodically
apply a gas of known concentration to the sensor. This
is usually done manually at the site with gas supplied
from a small lecture bottle. As the sensor reacts to the
calibration gas, adjustments are made to the
monitoring system to bring its calibration into
agreement with the known concentration of gas.
At times, sensors are mounted in inaccessible
locations, requiring expensive catwalks or scaffolding
to reach them. The Automatic Remote Gas Calibrator
(ARGC) allows the calibration gas to be applied to the
catalytic bead sensor from easily accessible locations.
The ARGC is used for blocking ambient air and redirecting
methane or other light hydrocarbon gases to
the catalytic sensor for calibration or testing sensor
accuracy. The ARGC tests or calibrates the General
Monitors catalytic sensor with 50% LEL methane or
other light hydrocarbon gas. The unit is capable of
calibrating gases at wind velocities up to 50 mph.
Applications
• Hard-to-reach sensor locations
• Warehouses
• Drilling rigs
• Crude oil pumping stations
• Petrochemical plants
• Refineries
• Aircraft hangars
Automatic Remote
Gas Calibrator