Install Instructions

The following alarm function SUB MENUS are activated when CtrL is set to SPAL :
AL (Alarm Type) SUB MENU
HI - High alarm
LO - Low alarm
HILO - For a high/low guardband type alarm
ALARM ADJUSTMENT
Alarm settings are dependent upon the selected alarm mode. The DH3 differential pressure controller alarm may
be congured as a High Alarm, Low Alarm, or High/Low Alarm. Alarm settings are all absolute and may be set to
anywhere within the range of the instrument. The dead bands of the alarms are xed at 1% of full scale.
MIN. PRESSURE
MAX. PRESSURE
ALHI
Relay OFF Relay ON
HIGH ALARM FUNCTION
MIN. PRESSURE
MAX. PRESSURE
ALLO
Relay ON Relay OFF
LOW ALARM FUNCTION
MIN. PRESSURE
MAX. PRESSURE
ALLO
Relay ON Relay OFF Relay ON
HIGH/LOW ALARM
FUNCTION
ALHI