SENSIT Technologies GOLD G3, Инструкция по эксплуатации

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14
BUMP TESTING AND CALIBRATION
To verify the accuracy of any
SENSIT GOLD G3
, it must be exposed to a known concentration
of test gas that will test any sensor combination included in your model. This is known as “bump
testing”. This can be done either by exposing the instrument to gas from the working display or
using the bump test feature which specifically tests each sensor and gives a pass or fail message.
For more information, see the Bump Test section in this manual.
Any sensor that does not meet the specifications listed in this manual may require calibration or
repair. A bump test does not calibrate the unit and does not update the calibration due date. Full
calibration is required for that.
A calibration past due message will be displayed during startup if calibration has not been
performed per your company specified interval. Any time it is suspected that the
SENSIT GOLD
G3
is not working properly, check calibration.
THE WORK DISPLAY
After the startup process, the work display will be shown.
This is the main working screen of the instrument, and what
will be used most of the time when detecting gas. The live
readings are shown on screen simultaneously for all sensors
installed in the instrument.
FILTER INTEGRITY AND FLOW BLOCK CHECK
Prior to use, a flow block check needs to be performed to test the integrity of the sensor cap
and internal tubing. Block the inlet of the instrument at the end of the gooseneck. Within a few
seconds, FLOW BLOCKED should be shown on the display. This ensures all seals are intact and
there are no air leaks in the probe or instrument. Press and release the
C
button to restart the
pump and return to the previous screen. If flow block is not detected, check the integrity of the
O-ring seals and connections on the probe and instrument. If flow block cannot be achieved,
contact the factory for assistance. An airtight system is crucial for accurate readings.
READY FOR USE
After the startup process and Autozero are complete, and a successful flow block check has
been done, the instrument is ready for use. The “work display”, which is shown, will show live
gas readings. The readings from all currently installed sensors will be shown simultaneously. The
operator does not need to leave this screen for most general-purpose use. However, there are
quite a few specialized test modes for specific applications, such as bar hole testing and purging.
See the Quick Menu section for more information on these.
To use the
SENSIT GOLD G3
for gas detection, always follow federal, state, municipal, and/or
company procedures, then follow these generalized steps below for using the
SENSIT GOLD
G3
.
1. It may be necessary to manually zero the instrument based on company practices and
environmental conditions. To do so, press & hold the
C
button until AUTOZERO appears
at the top of the screen. Always zero the instrument in a clean air environment.
2. When testing areas with elevated temperatures such as appliance vents or flues, always
attach the optional hot air probe to the end of the sensor cap. These connections need only
be finger tight. Failure to use the approved probe can result in damage to the instrument
and may void the warranty. Always perform a flow block check when using any probe or
attachment.