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Operating the Calibrator Teledyne API T703/T703U Calibrator Operation Manual
88
4.10. SETUP MORE VARS: INTERNAL VARIABLES (VARS)
The T703/T703U has several-user adjustable software variables, which define certain
operational parameters. Usually, these variables are automatically set by the
instrument’s firmware, but can be manually re-defined using the VARS menu.
The following table lists all variables that are available within the 818 password
protected level. See Appendix A for a detailed listing of all of the variables that are
accessible through the remote interface.
Table 4-11: Variable Names (VARS)
NO. VARIABLE DESCRIPTION
ALLOWED
VALUES
DEFAULT
VALUES
0
PHOTO_LAMP
1,2
Sets the photometer lamp temperature set
point and warning limits.
0ºC and 100ºC
58ºC
Warning limits
56ºC - 61ºC
1
O3_GEN LAMP
1,2
Sets the O
3
generator lamp temperature set
point and warning limits.
0ºC and 100ºC
48ºC
Warning limits
43ºC - 53ºC
2
O3_CONC_RANGE
Set the upper span point of the O
3
concentration range for TEST CHANNEL
analog signal O3_PHOTO_CONC.
0.1–20000 ppb 500 ppb
3
O3_PHOTO_BENCH_ONLY
2
O
3
bench control flag.
ON turns on the photometer pump and
switches measure/reference valve only
when the O
3
mode is set for BNCH (See
Section 3.4.5).
ON/OFF
OFF
4
ZA_PUMP_ENAB
2
Internal zero air pump control.
ON turns on internal zero air pump when
generating ozone.
ON/OFF
ON
5
STD_TEMP
1
Sets the standard Temperature used in
calculating O
3
flow rates and concentrations.
0ºC and 100ºC 25ºC
6
STD PRESS
1
Sets the standard pressure used in
calculating O
3
flow rates and concentrations.
29.92 in-Hg-A
15.00 – 50 .00
in-Hg-A
7
CLOCK_ADJ
Adjusts the speed of the instrument’s clock.
Choose the + sign if the clock is too slow,
choose the - sign if the clock is too fast (See
Section 4.7.2).
-60 to +60 s/da
y
Default=0
0
8
SERVICE_CLEAR
Restarts interval timer since instrument’s last
service, by setting the value to ON. (The
system then resets it to default OFF).
ON/OFF OFF
9
TIME_SINCE_SVC
Time since last service (in hours).
0-500000 0
10
SVC_INTERVAL
Sets the interval between service reminders
(in hours).
0–100000 0
1
DO NOT ADJUST OR CHANGE these values unless instructed to by Teledyne API’s Technical Support personnel.
2
Only available in calibrators with O
3
photometer and generator options installed.
NOTE:
There is a 2-second latency period between when a VARS value is changed and the new value is stored
into the instrument’s memory. DO NOT turn the instrument off during this period or the new setting will
be lost.
07223C DCN6572