Install Instructions

SETTING SET POINTS AND ALARMS

The hot key provides direct access to the Set Point and Alarm MENU. The Set Point and Alarm MENUS that are

displayed are based upon the Control (CtrL) SUB MENU.

SET POINT ADJUSTMENT

Adjusting the DH3 Set Points is quick and simple. Instead of setting a set point and deadband, simply adjust

SP1H

SP2H

for the desired relay turn on point, and then adjust

SP1L

SP2L

for the desired relay turn off point.

In the above graph, an instrument with a 1.0˝ range would have the SP1 relay turn on at 0.8˝ and off at 0.4˝.

SP1H

sets

the relay turn on point, and

SP1L

sets the relay turn off point. The relays outputs normally function in the direct acting

mode, which means the relays turn on with an increase in pressure. SP1 may be congured to act as a reverse acting

relay (refer to the 1SP SUB MENU setting, page 15). When set for reverse acting,

SP1H

sets the relay turn OFF point,

and

SP1L

sets the relay turn ON point. SP2 is always direct acting.

SP/AL

SP/AL SP/AL

SP/AL

SP/AL SP/AL

SP/AL

SP/AL SP/AL

SP/AL

Visible when

mode =

CONTROL MODE

PRES

SURE

TIME

0.2

0.4

0.6

0.8

1.0

(in. w.c.)