Buzzer - AMC -1BZX User Manual

4.2.10.6.4 MULTIPLEXING EXAMPLE
With an overview of the Outputs menu complete, it is worthwhile to show an example of how a
multiplexed sensor configuration can be used to drive the analog output. In this example, the
following configuration is used:
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Voltage output mode on OP1.
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2-10V range selected for OP1.
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GAS1, with a max gas concentration of 100 PPM, and Alarm SP 3 of 100 PPM.
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GAS2, with a max gas concentration of 10 PPM, and Alarm SP 3 of 3 PPM.
•
GAS1 and GAS2 are to be multiplexed; whichever gas has a higher percentage of
maximum scale is to drive the output.
•
GAS1 is using the max gas concentration for scaling ("M"), whereas GAS2 is using Alarm
SP 3 ("A").
Suppose GAS1 has a present reading of 7 PPM, and GAS2 has a present reading of 0.5 PPM.
GAS1 has a percent of max scale of 7/100=0.07. GAS2 has a percent of max scale of 0.5/3=0.16.
As a result, it is GAS2 that presently determines the analog output response.
The range selected for voltage mode is (10V – 2V) = 8V. Accounting for the output offset (Output
Min) of 2V, the analog output value will be found to be 2V + 0.16 * 8V = 3.33 V.

4.2.10.7 BUZZER

From the UTx service menu, selecting 'Buzzer' will update the display to show the following:
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AMC-1BZ Gas Monitor
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