Honeywell HC900 - Figure 29 DEWP Function Block Example

Function Blocks
DEWP Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 135
2/07
CO Properties %CO
0
Allows you to adjust % Carbon
measurement to compensate
for variations in the amount of
CO in the carrier gas.
2.0 to 35.0
default = 20
Use Actual %
CO
1
Function block will use the
actual % Carbon Monoxide
that is defined through an
analog input.
Click on block to select.
O2 Probe
Manufacturer
Carbon
Probe
Manufacturer
N/A
Select from Drop Down List of
Manufacturers.
• Advanced Atmosphere
Control Corp.
• Furnace Control Corp.
• Marathon Monitors
• Super Systems Inc.
Example
HFigure 29 shows a Function Block Diagram using a DEWP function block. This application uses the Dew
Point function block to calculate dew point based on using a carbon probe. A typical example might be for
control of an endothermic atmosphere generator. Alternatively, a Honeywell dew point transmitter could
be used for a more direct measurement.
Figure 29 DEWP function block example