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APPENDIX A-2: Setup Variables, Revision D.4 Model 400E Instruction Manual
SETUP VARIABLE
NUMERIC
UNITS
DEFAULT
VALUE
VALUE RANGE DESCRIPTION
TEST_CHAN_ID
— NONE
0
NONE,
PHOTO MEAS,
PHOTO REF,
O3 GEN REF,
SAMPLE PRESSURE,
SAMPLE FLOW,
SAMPLE TEMP,
PHOTO LAMP TEMP,
O3 SCRUB TEMP,
O3 LAMP TEMP,
CHASSIS TEMP
Diagnostic analog output ID. Enclose value
in double quotes (") when setting from the
RS-232 interface.
REMOTE_CAL_MODE
— LOW
0
LOW, HIGH
Range to calibrate during contact closure or
Hessen calibration. Enclose value in double
quotes (") when setting from the RS-232
interface.
PASS_ENABLE
— OFF OFF, ON
ON enables passwords.
OFF disables them.
PHOTO_LAMP_POWER
mV 4500 0–5000
Photometer lamp power setting.
LAMP_PWR_ENABLE
— OFF OFF, ON
ON enables photometer lamp power
cycling.
OFF disables it.
LAMP_PWR_PERIOD
Hours 24 0.01–1000
Photometer lamp power cycling period.
LAMP_OFF_DELAY
Seconds 0.1 0.02–5
Length of time photometer lamp is turned
off.
DET_VALID_DELAY
Seconds 20 1–300
Delay until valid concentration is computed.
REF_SDEV_LIMIT
mV 3 0.1–100
Photometer reference standard deviation
must be below this limit to switch out of
startup mode.
PHOTO_CYCLE
Seconds 5 0.5–30
Photometer lamp temperature control cycle
period.
PHOTO_PROP
— 0.5 0–10
Photometer lamp temperature PID
proportional coefficient.
PHOTO_INTEG
— 0.1 0–10
Photometer lamp temperature PID integral
coefficient.
PHOTO_DERIV
— 0 0–10
Photometer lamp temperature PID
derivative coefficient.
O3_SCRUB_CYCLE
Seconds 10 0.5–30
O
3
scrubber temperature control cycle
period.
O3_SCRUB_PROP
— 0.5 0–10
O
3
scrubber temperature PID proportional
coefficient.
O3_SCRUB_INTEG
— 0.1 0–10
O
3
scrubber temperature PID integral
coefficient.
O3_SCRUB_DERIV
— 0 0–10
O
3
scrubber temperature PID derivative
coefficient.
PATH_LENGTH
cm 41.96 0.01–100
Photometer detector path length.
STABIL_FREQ
Seconds 10 1–300
Stability measurement sampling frequency.
STABIL_SAMPLES
Samples 25 2–40
Number of samples in concentration
stability reading.
SAMP_PRESS_SET
In-Hg
29.92
Warnings:
15–35
0–100
Sample pressure set point and warning
limits. Set point is used for T/P
compensation.
A-14 04402 Rev D.4