Galvanic Applied Sciences ProTech903, Operation Manual

Page: 31 / 190

Revision 14
31 August 02, 2019
Figure 2-14: Total Sulfur Furnace
The total sulfur furnace operates on AC voltage only, so total sulfur analyzers cannot be
powered by 24VDC power supplies. The temperature is controlled by modulating the power
output to the furnace from the I/O board in the electronics enclosure. This modulation is set
up in the application program ( Section 5.9. Global Tab ) The temperature is monitored using a
temperature switch wired into a discrete input on the I/O board and by a thermocouple
interface in which case temperature is available for readout on the LCD. If the temperature in
the furnace drops below the temperature set point for any reason, the discrete input will
trigger an alarm. The thermocouple can also be configured to trigger an alarm at a
temperature set point on the
Analog Input
tab ( Section 5.17 Analog Input Tab ).
When the furnace is at full operating temperature, the outside surface of
the furnace enclosure will be hot and should not be touched.