The possible displays are:
CHAMBER STABLE - The oven has been at a stable temperature for at least the time period set.
CHAMBER STABILIZING: LOW TEMP - Oven is below temperature setpoint.
CHAMBER STABILIZING: HIGH TEMP - Oven is above temperature setpoint.
CHAMBER STABILIZING: xx:xx - Oven temperature is within the correct range and the time remaining until specified time is displayed.
Ash Rate – This is used for high test temperatures that will ignite a sample.
YOU MUST USE THIS TO PREVENT HEATER DAMAGE.
TO PREVENT SAMPLE IGNITION AND POSSIBLE HEATER DAMAGE, USE ASH RATE, NOT TEMP RATE, AT ASHING TEMPERATURES. TEMP RATE WILL NOT PREVENT SAMPLE IGNITION.
The Ash Rate value is a rate of moisture loss used to limit the rate of increase in oven temperature to slow ignition and prevent flaming. The normal temperature setpoint is limited to keep the moisture loss at less than the set ash rate. For example, if an ash rate of 7 %/Minute is used, the temperature increase is controlled to maintain a ≤ 7 %/Minute moisture loss during the test.
Start Temperature Control - Prevents a test from starting if the chamber temperature is more than two degrees hotter or colder than the IDLE TEMPERATURE. This feature can improve the standard deviation of results of some
Ending Criteria
The criteria used by the instrument to automatically end a test. This feature makes it unnecessary for the operator to monitor the analyzer while it is performing a test. Selecting this option will display the ending criteria options.
Prediction - The MAX 5000XL uses an advanced version of the AZI moisture prediction algorithm to automatically end each test early to speed test results. The prediction method relies on the fact that most samples exhibit a weight loss trend such that the rate of volatilization is proportional to the amount of volatile material remaining in the sample.
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