Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2

6-3

6.2.1. Autocal - Setup Zero/Span Valves

The Zero/Span valves can be set up to operate automatically. Table 6-2 in this section describes

Autocal setup.

Table 6-2: Setup Automatic Zero/Span Checking or Calibration

Step Action Comment
1. Press SETUP-ACAL This button sequence will cause the AUTOCAL menu to be displayed.
2. Press PREV or
NEXT This selects a SEQUENCE. Up to 3 Sequences can be defined. A
Sequence is a definition of zero/span calibrations along with timing
information.
3. Select MODE, then
PREV or NEXT MODE allows you to select the order of zero, low-span or high-span
that will be performed, MODES are listed in Table 6-3. Use PREV -
NEXT to scroll the list of choices, then press ENTR to select. To
disable a sequence, select DISABLE from the menu.
4. Press SET This menu sets up several timers and selects calibration or calibration
check.
1. TIMER ENABLE – If set to ON, the defined sequence will
execute. If set to OFF, the sequence will remain in memory, but
will not execute.
2. START DATE - calendar date to start seq uence dd-mmm-yy, day-
month-year format.
3. START TIME - time of day sequence will start. hh-mm, hours-
minutes in 24 hr format.
4. DELTA DAYS and DELTA HOURS:MIN is the time between
each activation of the sequence. By setting the Delta Hours
variable to be other than an exact number of days, the sequence
can move ahead or be delayed each time it is run. For example, by
setting DELTA DAYS = 1 and DELTA HOURS = 1:00, the
sequence will execute 1 hour later each day. To set it to move back
½ hour each day, DELTA DAYS = 0, DELTA HOURS = 23:30.
5. DURATION -Amount of time for each zero/span point.
6. CALIBRATE – If set to ON, will calibrate(adjust slope and
offset). If OFF will check, but not change calibration.
7. 7. RANGE-TO-CAL Selects the range to calibrate LO or HI.
Applicable to AutoRange and RemoteRange modes.
5. Press EXIT The M200AH now exits the AUTOCAL SETUP menu. For each
enabled sequence, the M200AH will now AUTOCAL at the defined
times.