GxT Ferret 14 User Manual
Warranty & Service
Contact Ferret Instruments directly if you need warranty and service help. We can
be reached at (800) 627-5655. Should your unit require factory service, send the
unit to us, freight prepaid at:
GasLink LT
CALIBRATION & MAINTENANCE
14
Ferret Instruments, inc.
Repair Department
1310 Higgins Drive
Cheboygan, MI 49721
Your unit will be in house no more than two business days. Please include a note
indicating what problem you are experiencing. Any charges for service will be handled
via Credit Card or C.O.D.
Please note that consumable items such as the leads, filters, NOx Sensor, and O2
Sensor, are not covered by the limited warranty.
Replacement Parts List
Exh. Probe Flex Extension .....................................................................H014-74
Upper & Lower Filter ..............................................................................H020-57
Calibration Gas ...................................................................................... H020-70
NOx Sensor........................................................................................... M022-52
O2 Sensor ............................................................................................. M022-50
Extension Lead ..................................................................................... W000-03
Power Lead ........................................................................................... W004-02
Cigarette Lighter Adapter ......................................................................W014-30
Temperature Probe ............................................................................... W022-21
Spark Pickup ..........................................................................................X008-01
In-line Filter ............................................................................................ X014-13
AC Power Adapter.................................................................................. X014-20
ComLink I/R ........................................................................................ Ferret 114
PC Software for GasLink LT ........................................................... Ferret 114PC
Routine Maintenance
The GasLink does require routine maintenance to maintain accuracy and enhance
the life of the tool. Routine maintenance includes checking and replacing filters,
performing gas calibrations, and replacing the NOx and O2 Sensors. The following
is a list of recommended practices.
Every time you use the Unit
Check the filters, and replace if necessary
Empty any water found in the Sample Bowl
Purge the unit at the conclusion of a test
Monthly, no less than every 60 days
Perform a Gas Calibration
Following this recommended service will maintain the accuracy of the unit and extend the life of the NOx and O2 sensors.
Filter Replacement
The in-line filter can be replaced by simply disconnecting it from the analyzer and
fitting the replacement. The upper and lower filter in the water separator bowl need
to be replaced as a unit. Do not lose the rubber separator that goes between the
filter elements, without it, no filtering will occur. The filter with the Red Dot goes on
the bottom.
E014-02
The filters are sold in a set (P/N H020-57) that includes the upper and lower filter.
They are available from your local distributor, or direct from Ferret Instruments (800627-5655), or check www.ferretinstruments.com for an internet distributor.
Low Flow
A “Low Flow message will appear if the analyzer senses a restriction in the sample
hose assembly. A gradual increase in resistance, like a clogged filter will trigger the
message. It is also possible that the message will appear when the unit is very
cold. If the unit has been stored in a cold environment (close to or less than freezing)
use the unit on a vehicle for about 20 minutes. The heat of the exhaust gas and the
fact the unit is powered up should clear a temperature related Low Flow message.
Gas Calibration
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.
The Gas Calibration
procedure is built into
the analyzer. It is
found under the
Calibration &
Maintenance Menu.
Using the
Calibration
Adapter
Regulator
The regulator is
necessary to regulate
the flow of gas and
reduce the pressure
from the Cal Gas
bottle to the analyzer.
Disk
Filter
Hose
Adapter
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.
Connection
to Analyzer
Check
Valv e
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.
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