Installation and Operation
AMI
Analyzer Manual
16
If security is set, nothing will happen. In this case use the AMI User Interface program to change the
security level, or directly change the alarm set point.
Alarm Hold Off
Press the ALARM HOLD OFF button and release it. The display will show the alarm hold off time in minutes
(from 0 to 120 minutes), and if any alarms are fired, they will be turned off and held off for the period of the
alarm hold off time. If the relays are programmed to latch, pressing this button will also unlatch them (and
stop them from alarming again for the hold off period). This is particularly useful during calibration, so that
you don’t cause alarms to trigger when you flow the calibration gas. For example, if the span gas is 40ppm,
and the alarms are set to 10ppm and 20ppm, the span gas would set off the alarms with whatever
consequences that would cause. Pressing this button will temporarily bypass triggering the alarms.
If the security setting allows it, the alarm hold off time can be adjusted by pressing the UP or DOWN arrow
buttons.
Span (Calibration)
When the span gas has been flowing for 25 minutes and the reading is stable, press the SPAN button for
one second until the “SPAN” flag appears, and let go, and then quickly push the Up or DOWN button until
the display reads the same as the label on the span gas cylinder. Release the button, and after three
seconds (if security does not forbid it), the new span factor is stored, the “SPAN” flag disappears and the
analyzer drops back to normal operating mode.
View the Span Factor:
The model 3010BR has a “Span Factor” feature. It can be displayed on the LCD by pressing the UP arrow by
itself (when the analyzer is in normal operation, meaning not in a function such as spanning or setting the
alarms). It helps you determine the life of the sensor. As the sensor ages, its output decreases gradually,
and therefore the span factor has to be turned up during calibration to compensate.
The span factor should be between 400 and 600 for a new sensor. When you calibrate the analyzer, check
this value before and after the calibration. You should see that the value goes up slowly over the life of the
sensor. When the value has reached 1000, the sensor has reached the end of its life and should be
replaced.
Cell Block Temperature:
Press the DOWN arrow button only and the display will show the temperature of the cell block in degrees
Fahrenheit. This is useful for troubleshooting and to see if the heater (if present) is operating properly. The
temperature reading is limited to 25
F at the lowest, and about 120
F at the highest. If the unit is equipped
with a heater, the temperature will be higher than ambient once the ambient temperature has dropped
below 50
F.
Default Settings
The analyzer is tested and shipped with the following default settings, unless otherwise requested by the
customer at the time of purchase.
Output Range
0-100ppm