Owner manual

Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004

4.3.2 Alarm Delay Switch (SW2) – default 5 sec.

The detector is equipped with different Alarm Delay options. It provides

programmable time delays of 0 to 30 seconds with eight (8) fixed settings at: 0, 3,

5, 10, 15, 20, 25 and 30 seconds, using SW2 switches 1-3. (See Table 5.) When

an Alarm (Detection) level condition is encountered, the detector delays

execution of the Alarm Relay and the 4-20mA output by the specified period of

time. The detector will then evaluate the condition for required delay period. If the

Alarm level is still present, the Alarm indications return to its standby state.

Table 5. SW2 Alarm Delay Setting

Delay SW2 switches

(seconds) 4 3 2 1

0 N/A Off Off Off

3* N/A Off Off On

5 N/A Off On Off

10 N/A Off On On

15 N/A On Off Off

20 N/A On Off On

25 N/A On On Off

30 N/A On On On

* Default

Note: The new FM approval from January 2003 does not allow use of 20, 25 and

30-second delay settings.