ENMET SPECTRUM CO-RAL - Manual (Page 12)

ENMET Corporation S PECTRUM CO RAL
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4.1.4 Changing the Alarm Level
A valid key entry sets the instrument at the "run ZERO" location of the maintenance menu. Press the OPTION push button
twice to access the "set ALM" display, then press the SELECT button; ALM=0000" is displayed. This is called the alarm
update window, and the value displayed is the present alarm setpoint. The underscore cursor is under the far left digit. Press
the
OPTION button to index the underscored digit; press the SELECT button to index the underscore cursor one position to the
right. When the desired new alarm point is set, press either the OPTION or SELECT button to return to the alarm update
window. If the new alarm setting is valid, "set ALM" is again displayed. Press the OPTION button four times to return to the
operations menu.
For the safety of the user, there is an upper limit past which the alarm setting is invalid, and the instrument does not accept it. If
an invalid alarm setting is attempted, after the numerical value is inserted in the "ALM=0000" window, pressing the
OPTION
or SELECT button results in a momentary display of "INVALID" after which the display returns to the alarm update window.
Exiting the alarm update window at this point results in an alarm point setting unchanged from the value present when the
procedure was begun.
For the S PECTRUM CO RAL , the factory default alarm setpoint is 10 ppm, and the upper alarm limit is 50 ppm.
4.1.5 Setting the Battery Type
C AUTION : The S PECTRUM CO RAL should never be used with Lithium type batteries. Although they physically fit in the
enclosure, erroneous gas display reading may occur.
A valid key entry sets the instrument at the "run ZERO" location of the maintenance menu. Press the OPTION pushbutton
three times to access the "set BATT" display, then press the SELECT pushbutton; "Alk " is displayed. Press the OPTION
pushbutton to cycle the display among the two types of batteries which are valid, "Alk " and "NiCad". Choose the battery type
that is being used to power the instrument by pressing the
SELECT pushbutton; doing so returns the display to "set BATT"
location. Push the OPTION pushbutton three times to return to the maintenance menu.
C AUTION : If the "set batt" selection is not identical with the battery being used, incorrect low battery indications are furnished.
4.1.6 Setting a New Key
A valid key entry sets the instrument at the "run ZERO" location of the maintenance menu. Press the OPTION pushbutton four
times to access the "set KEY" display. Press the SELECT pushbutton once; "KEY=0000 is displayed. A new key can be set
by changing the underscored number with the OPTION pushbutton and moving the underscore cursor with the SELECT
pushbutton. After the new key is entered “new-XXXX” is displayed, press the OPTION or SELECT pushbutton to display to
“exit”, then press the OPTION pushbutton to return to “run ZERO”.
N OTE : Four digit key numbers should be selected carefully and recorded. Without the correct key, the maintenance menu
cannot be accessed. If a four digit key number is lost, call ENMET customer service personnel.