The APD 1020 accept a DC voltage or milliamp current input and provide a visual alarm indication and alarm relay contact outputs. The input type, range, and alarm types are factory configured. Front-accessible potentiometers are used to adjust alarm setpoint and deadband.

Features with all optional accessories:

• User adjustable setpoint(s)
• User adjustable deadband(s)
• Selectable sink/source mA input
• 15 V input loop power supply
• 8 Amp SPDT contacts
• Input LoopTracker LED
• Alarm status LEDs
• Alarm options: LO, HI/HI, LO/LO, band alarm
• Optional reverse acting
• Optional latching alarms
• Push to test/reset
• Remote push to test/reset
• Full I/O/power isolation
• Removable plugs
• DIN rail mount without tools
• Universal power 85-265 VAC, 60-300 VDC
• D option for 9-30 VDC, 10-32 VAC power

Applications:

• Process Limit Backup Alarm
• Tank Level Alarm
• Process Signal Over or Under Alarms

LoopTracker and Alarm Status LEDs

API exclusive features include a LoopTracker LED that varies in intensity with changes in the process input signal. A two red/green bi-color alarm status LED visually indicate alarm status. These LEDs provide a quick visual picture of your process at all times

Output Test / Unlatch

API's exclusive Output Test button can be used to verify the alarm and system operation and also provides the additional function of unlatching the alarm when the latching option has been ordered. This feature can be remotely operated. The output test button greatly aids in saving time during initial startup and/or troubleshooting.