RKI Instruments Eclipse - Manual (Page 15)

Eclipse Detector Head Operator’s Manual 15
Setting the Zero Reading
1. Verify that the gas reading has stabilized.
2. Press and release the optical switch once. The Eclipse will perform a zero adjust which
will take approximately 3 seconds and return to the ready screen.
3. Unscrew the regulator from the zero air calibration cylinder.
Leave the sample tubing connected to the regulator and the calibration cup.
Setting the Response Reading
1. Press and release the optical switch 3 times and then press and hold.
2. After approximately 5 seconds, the following will display: RELEASE to SPAN.
Release your finger at this time and the current reading will display with the message
SPAN in the upper left of the display and an “R” in the upper right indicating that the
Eclipse is ready for a span operation.
NOTE: If there is no switch activity for 5 minutes while the screen indicates that the unit
is ready for a span operation, the unit will return to normal operation.
3. Screw the regulator onto the target gas cylinder.
4. Allow gas to flow over the sensor for 2 minutes.
5. Adjust the reading to match the target gas concentration if necessary.
• If the reading is below the target gas concentration, press and hold the optical
switch to increase the reading. Initially the reading increases slowly. If a large
adjustment is needed, continue to hold and after a few seconds the reading will
increase at a faster rate. Release when the desired reading is reached.
• If the reading is above the target gas concentration, press and release once and
then press and hold to decrease the reading. Initially the reading decreases slowly.
If a large adjustment is needed, continue to hold and after a few seconds the
reading will decrease at a faster rate. Release when the desired reading is reached.
6. Unscrew the regulator from the gas cylinder.
7. Remove the calibration cup from the sensor.
8. Press and the release the optical sensor 3 times. After a few seconds the Eclipse will
return to normal operation.