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5.1.6
Noise Amplification
Once setup adjustments have been completed, confirm that the flame signal, and not the noise,
is being amplified. Check for noise application.
To check for Noise Amplification:
1. Completely cover the objective lens.
2. Ensure that the red LED activates with the anticipated delay time. If the red LED fails to
activate or there is repeated green-red-green-red "chatter," then too much noise is
being amplified. In such cases, the following steps should be taken:
a. Keep the delay set at the present value and adjust the System Gain (Figure 9, item 5)
counterclockwise no more than two complete turns, just until the "chatter" stops. Be
sure to keep track of the number of turns. If the chatter stops, proceed to step b. if
chatter doesn't stop, proceed to step c.
b. Verify that the analog meter remains above .9 while aiming at the flame. The
procedure is now successfully completed (Proceed to Section 5.1.7 Relay Contacts).
c.
Return the System Gain to its original setting.
d. Reduce the Climate Compensation by selecting the next lower setting on the Switch.
(i.e. 200x to 150x, 150x to 100x).
i.
Check for noise amplification. If noise amplification has stopped, go to step 3.
ii. If noise continues, return the Climate Compensation switch to its original setting
and proceed to step 5.
3. Verify that the analog meter remains above .9 while aiming at the flame.
4. Verify that the analog meter remains at or below .35 when the objective lens is covered.
If this cannot be accomplished, then:
a. Manually adjust the gain no more than two complete turns to achieve acceptable
meter readings.
b. Verify that noise amplification has not returned. If the noise has returned, proceed
to step 5.
c.
If noise has not returned, the procedure is completed. (Proceed to Section 5.1.7 Relay
Contacts).
5. Reduce the delay time and repeat the above procedure.
a. If noise amplification continues, repeat the setup adjustment procedures starting at
Section 5.1.4 System Gain/Climate Compensation.
b. If problems persist, contact the factory for further technical assistance. (Refer to
Section 1.5 for details).
5.1.7
Relay Contacts
Check the relay contacts at the instrument's Terminal Output board. N.O. and N.C. contacts are
both available simultaneously. Verify that the desired polarity is obtained during an alarm
condition.
Note: Make note of the contact position when the instrument power is interrupted
or shut-off. The relay is energized when the green LED is lit. It is not energized during
an alarm or power loss.
E
T QUASAR Flare Monitors Operation Manual
2
Operating the M8100PM-EXP • 33
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