ECA 450 OperationInstruction 0024-9400 295. Wait until temperature display stabilizes; then press ENTER to save thedisplayed temperature value in the analyzer’s temperature memorybuffer and return to the Setup List screen.Note: The temperature memory buffer is cleared when the analyzer isturned off, or when the T-AIR thermocouple is installed after themeasured number is saved.2.14.3 Thermometer MethodThis method has an operator taking a one-time primary air temperaturemeasurement using a thermometer, and then manually entering themeasurement into the analyzer’s temperature memory buffer.When viewing the T-AIR value on the Combustion Test HOLD/RUN screen,the designation (E) will appear to the left of the temperature value. The letter“E” signifies that the primary air temperature value was manually Entered.For example:T-AIR 86.5 °F (E)Measure the primary air temperature using a thermometer, and manuallyenter that value as follows:1. Use a thermometer to measure the primary air temperature.2. Press SETUP key to display the Setup List screen.3. Use ∧∨ keys to place cursor next to “Primary Air”; then press ENTER todisplay the Primary Air screen.Note: The message “Primary Air is measured by TC” will appear if athermocouple is plugged into the T-AIR socket. This thermocouple must beremoved to continue this procedure.«««««SETUP LIST«««««Temperature UnitsPressure UnitsPollution UnitsLanguageDateTimeO2 ReferenceTest IDDisplay TimeoutDisplay Formatª Primary AirData LoggingStatisticsUser NameKeypad SoundHigh Res NOX EnablPrint PressureInformation