Use Of Zero/Span Valves With Remote Contact Closure; Automatic Zero/Span Cal/Check (Autocal); Table 5-1: Autocal Modes; Table 5-2: Autocal Attribute Setup Parameters - Teledyne T360 Operation Manual

Calibration Procedures

5.5.2. Use of Zero/Span Valves with Remote Contact Closure

5.6. AUTOMATIC ZERO/SPAN CAL/CHECK (AUTOCAL)

MODE NAME
DISABLED
ZERO
ZERO-SPAN
SPAN
ATTRIBUTE NAME
TIMER ENABLED
STARTING DATE
STARTING TIME
DELTA DAYS
DELTA TIME
DURATION
CALIBRATE
180
Contact closures for controlling calibration are located on the rear panel
CONTROL IN connector. Instructions for setup and use of these contacts are
found in Section 4.15.1.2. When the contacts are closed for at least 5 seconds,
the instrument switches into zero or span mode. The remote calibration contact
closures may be activated in any order. It is recommended that contact closures
remain closed for at least 10 minutes to establish a reliable reading.
The instrument will stay in the selected mode for as long as the contacts remain
closed. If calibration is enabled, the T360 will re-calibrate when the contact is
opened, then go into SAMPLE mode. If calibration is disabled, the instrument
will return to SAMPLE mode, leaving the calibration unchanged.
The AutoCal system allows unattended periodic operation of the ZERO/SPAN
valve options by using the T360's internal time of day clock. AutoCal operates
by executing SEQUENCES programmed by the user to initiate the various
calibration modes of the analyzer and open and close valves appropriately. It is
possible to program and run up to 3 separate sequences (SEQ1, SEQ2 and
SEQ3). Each sequence can operate in one of 3 Modes, or be disabled.
Table 5-1:
Disables the Sequence
Causes the Sequence to perform a zero calibration/check
Causes the Sequence to perform a zero and span concentration
calibration/check
Causes the Sequence to perform a span concentration
calibration/check
For each mode there are seven parameters that control operational details of the
SEQUENCE. They are:
Table 5-2: AutoCal ATTRIBUTE Setup Parameters
Turns on the Sequence timer
Sequence will operate after Starting Date
Time of day sequence will run
Number of days to skip between each Seq. execution
Number of hours later each "Delta Days" Seq is to be run
Number of minutes the sequence operates
Enable to do a calibration – Disable to do a cal check only
Teledyne API Model T360/T360M Operation Manual
AUTOCAL Modes
ACTION
ACTION
07272B DCN6552