MEASURING MICROAMP SIGNAL FOR FLAME RECTIFICATION

MEASURING MICROAMP SIGNAL FOR FLAME RECTIFICATION

Flame rectification has been in use for many years to prove ignition. The equipment to test this process has been expensive and difficult to use until recently. The flame rectification process for proving flame is common among many manufacturer’s burners. The procedure for testing the flame sensing circuits is therefore common to most all manufacturers. However, always refer to the Manufacturer’s information for detailed specifics on flame rectification measurements.

Another good Article on Flame Rectification from Fieldpiece® here:
http://hvacprotech.forumwise.com/hvacprotech-thread600.html

MICROAMP METER REQUIRED

A meter capable of reading DC micro amps is required for measuring flame sensing. Analog or digital meters work equally well. Honeywell sells an analog meter (model W136A) with a 25 DC microamp scale. There are numerous digital and analog meters on the market that will provide the same scale. While a 25 DC microamp scale is preferred because of sensitivity to small signals, a 200 DC microamp scale will generally suffice.

Read the Rest of this Article: http://hvacprotech.forumwise.com/hvacprotech-thread4567.html

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