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TARGET Series ENMET Corporation
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button at the Exit line to go back to the Maintenance menu. STEL and TWA alarms are preset at the factory and can
only be changed using the TARGET Trakker software package.
SELECT
Example: Display of Set Alarm Menu
6.4a.3 Enable Sensors
From the Advanced Maintenance menu, press the MENU button twice once to put the asterisk next to the Enable
Sensors line. Press the SELECT button to enter the Enable Sensors screen. Use the MENU button to move the
asterisk next to the gas whose alarm needs to be changed. Press the SELECT button to toggle the sensor ON or OFF.
Press SELECT at the Exit line to go back to the Maintenance menu.
SELECT
6.4a.4 Internal Pump Calibration
For instruments with internal sampling pumps, a calibration procedure is required whenever a pump is replaced or
when calibration is performed on the instrument sensors. It is also recommended to perform pump calibration if any
abnormal pump operation is observed.
N
OTE
: The calibration or sampling shield should not be attached to the instrument during pump calibration.
Press the menu button to move the asterisk next to the Pump Calibration prompt.
Press the select button to initiate the procedure.
The pump will automatically come on. The instrument samples the pump signal for one minute. At the end of the
one minute, the instrument is ready for the blocked flow measurement.
Put your finger over one of the two sampling holes on the back of the sensor housing.
Press the select button. The instrument samples the blocked flow condition for 10 seconds and then stores the
reading. See figure 9, for location of sampling holes.
The low flow alarm is set automatically by the instrument based on the free flow and blocked flow readings. No
further adjustments are necessary.
Exit the Maintenance Menu when maintenance operations are complete.
SET ALARMS
*O2 19.5 / 23.5 %
CO 35 ppm
H2S 10 ppm
Calibrate
*Set Alarms
Enable Sensors
Pump Cal Exit
Calibrate
Set Alarms
*Enable Sensors
Pump Cal Exit
ENABLE SENSORS
*O2 ON
CO ON
H2S ON