2.3 Operating Logic Once the IQ Force has completed the start up sequence, the current gas readings screen will be shown. At the center of the display is a heartbeat that will beat every few seconds to show that the instrument is functioning normally. If the IQ Force is due for fresh air/zero calibration, the Cal will flash on the LCD once every five seconds as a reminder. If the IQ Force is due for span calibration, the calibration bottle icon will be shown. Both Cal and the calibration bottle icon and the red LED flashes every five seconds if the instrument is due for both span and fresh air calibration.
IQ Force™ Gas Detector Reference Manual 15 Operating Logic If a sensor is not detected in one of the sensor channels during start up, the reading in the designated sensor channel will appear blank. If a complete sensor failure occurs or a sensor is removed while the instrument is turned off, the instrument will not show alarm levels or gas readings for that sensor. In the example at right, the LEL sensor has not been detected and a reading is not shown. The IQ Force only detects those substances that appear in the current gas readings screen during the current operating session. WARNING