GxT Ferret 14 5-Gas Calibration - Manual (Page 2)

Hose
Adapter
Regulator
Check
Valve
Disk
Filter
Connection
to Analyzer
Using the
Calibration
Adapter
Gas Calibration
The Gas Calibration
procedure is built into
the analyzer. It is
found under the
Calibration
&
Maintenance Menu.
The regulator is
necessary to regulate
the flow of gas and
reduce the pressure
from the Cal Gas
bottle to the analyzer.
Do not attempt to use
a calibration gas bottle
without a proper
regulator.
Do not attempt a
calibration without a
regulator
and a
calibration adapter. It
is very important that
the check valve is not missing and the Calibration adapter is assembled as pictured.
The bottle provides a large quantity of gas at a high pressure. The regulator reduces
the flow of gas to the low level required for calibration. The red restrictor protects the
analyzer from high pressure, which may be present momentarily when the regulator
or bottle valve are adjusted. The check valve and filter reduce the pressure in the
input hose to near zero, as required for proper operation. The connection to the
analyzer is made in place of the sample hose. When used properly, you will hear
calibration gas escaping from the check valve during the calibration process.
The ideal calibration gas to be used with the analyzer contains the following
concentrations of gas: Propane - 1,200 PPM, CO - 4.0%, CO2 - 12.0%, NOx - 1000
PPM. Other concentrations of gas can be used, but be sure the NOx concentration is
above 500 ppm and less than 3000 ppm.
Purging
The analyzer will purge itself for 2 minutes whenever you apply power to the unit. It
is best to have the sample hose in the tailpipe and connected to the analyzer before
applying power. If you see water in the filter assembly, run a purge. The purge
function is found under the Calibration & Maintenance Menu. If you would rather
not wait for the purge, simply open the filter assembly, dump out the water, and wipe
with a clean petroleum free cloth. When replacing the filter elements, don’t forget
the rubber spacer between the filters. Without the spacer, the filters don’t work.
Ferret 14 Gas Analyzer Error Messages and Suggested Actions
Error Message Suggested Action
HC-CO Zero not Successful, Retry
Zero from Maintenance menu. Contact
Factory if this message persists.
First, try the zero function again, if the
message persists, the analyzer needs
to be returned to the factory for service.
Most likely cause is water in the I/R
bench due to incorrect filter installation,
or failure to purge frequently.
Warning O2-NO Zero not successful,
Retry Zero from Maintenance menu.
Contact Factory if this message
persists.
First, try the zero function again. If this
message persists contact the factory
for further assistance
O2 Sensor nearing end-of life. Check
manual and replace
Replace the O2 Sensor.
Warning Calibration not successful.
NOx reading failed: Check cal gas
setup, Gas Bottle and repeat test.
First, make absolutely sure that the
calibration adapter is properly used. If
this message persists, replace the NOx
sensor according to Ferret’s NOx
sensor policy.
Warning Calibration not successful, HC
readings bad: check Gas Setup, Gas
Bottle and repeat test.
The most likely situation here is the
calibration adapter was not used
properly, or the gas concentration of
the Cal Gas Bottle was incorrectly set
during the calibration process.
Warning Calibration not successful, CO
readings bad: Check Gas Setup, Gas
Bottle and repeat test.
The most likely situation here is the
calibration adapter was not used
properly, or the gas concentration of
the Cal Gas Bottle was incorrectly set
during the calibration process.
Cleaning the Sample Hose
If it becomes necessary to clean the sample hose and handle, use clean, dry
compressed air. Do not blow compressed air through the filter elements!
How to Extend the life of the NOx and O2 Sensor
The best way to extend the life of your NOx and O2 sensor is to simply use the
analyzer. Leaving it plugged in continually does not extend the life. The units that
are experiencing longer sensor life are used several time a week. Usage of less
than once per month will shorten the life of the sensors.