Operating Manual - Spectrex Inc.

TM 40/40UFL, Rev (2) August 20131.6.2.2 Automatic BITThe detector automatically performs a BIT every 15 minutes. A successfulBIT sequence does not activate any indicator.All outputs of BIT results function as described in Table 8 and Table 9, andthe BIT is automatically executed every 1 minute. This continues until asuccessful BIT occurs, when the detector resumes normal operation.Table 8: Results of a Successful BITOutputResultFault relay Wiring options 1, 2, 4: remains CLOSED Wiring options 3 and 5: remains OPEN0-20mAoutputPower LEDWiring option 1, 2, 3: Normal (4 mA)Green, Flashing, 1 Hz On (Normal)Table 9: Results of an Unsuccessful BITOutputResultFault relay Wiring option 1, 2, 4: changes to Open Wiring option 3 and 5: changes to Closed0-20mA outputPower LEDBIT procedureWiring option 1, 2, 3: BIT Fault (2mA)Yellow, Flashing, 4 HzPerformed every 1 minuteInternal Detector Tests 17