Thermo Scientific DCT6088, User Manual

Page: 73 / 121

Primary Displays & Menus
The Relays Menus
5. Press the down arrow , and the Relay Off Condition screen is displayed.
Select a relay OFF condition. The selections available for the OFF
condition are the same as those for the ON condition. If the ON
condition is one of PULSE selections, an OFF condition is not
applicable.
The OFF condition value should be entered in conjunction with the
ON condition value to establish a “dead band”. This prevents the relay
from continuously cycling on and off when the flow is close to the ON
or OFF value. For example, if the ON condition is FLOW > 250
gallons per minute, the OFF condition may be set at FLOW < 240
gallons per minute. At these settings, the relay turns on when the flow
exceeds 250gallons per minute and does not turn off until the flow falls
below 240 gallons per minute.
Figure 5–55. Relay Off Condition screen
6. Press the down arrow , and the Relay Off Condition Value screen is
displayed. Enter the value for the relay OFF condition. Press Enter .
Figure 5–56. Relay Off Condition Value screen
7. Repeat this procedure for each relay you want to program.
Thermo Fisher Scientific DCT6088 User Guide 5-23