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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
USER_UNITS
— PPB
0
PPB, PPM,
UGM, MGM
Concentration units for user interface.
Enclose value in double quotes (") when
setting from the RS-232 interface.
DIL_FACTOR
— 1 0.1–1000
Dilution factor. Used only if is dilution
enabled with FACTORY_OPT variable.
SLOPE_CONST
— 1 0.1–10
Slope constant factor to keep visible slope
near 1.
TPC_ENABLE
— ON OFF, ON
ON enables temperature/ pressure
compensation; OFF disables it.
O3_GEN_MODE
— CNST
0
CNST,
REF
O
3
generator control mode. Enclose value
in double quotes (") when setting from the
RS-232 interface.
O3_GEN_SET1
PPB 400 0–1500
O
3
generator high set point for range #1.
O3_GEN_SET2
PPB 400 0–1500
O
3
generator high set point for range #2.
O3_GEN_DEF
PPB 400 0–1500
O
3
generator default set point.
REF_DELAY
Seconds 60 1–300
Delay before beginning O
3
generator
reference feedback control.
REF_FREQ
Seconds 12 1–60
O
3
generator reference adjustment
frequency.
REF_FSIZE
Samples 4 1–10
O
3
generator reference filter size.
REF_INTEG
— 0.1 0–10
O
3
generator reference PID integral
coefficient.
REF_DERIV
— 0 0–10
O
3
generator reference PID derivative
coefficient.
DRIVE_STABIL
mV 10 0.1–100
O
3
generator drive stability limit for
concentration cache updates.
CACHE_RESOL
PPB 2 0.1–20
O
3
generator cache un-normalized
concentration resolution.
O3_LAMP_CYCLE
Seconds 2 0.5–30
O
3
generator lamp temperature control
cycle period.
O3_LAMP_PROP
1/DegC 0.2 0–10
O
3
generator lamp temperature PID
proportional coefficient.
O3_LAMP_INTEG
Gain 0.01 0–10
O
3
generator lamp temperature PID integral
coefficient.
O3_LAMP_DERIV
Gain 0.2 0–10
O
3
generator lamp temperature PID
derivative coefficient.
O3_SPAN1
Conc 400 50–10000
Target O
3
concentration during span
calibration for range #1.
O3_SLOPE1
— 1 0.850–1.150
O
3
slope for range #1.
O3_OFFSET1
PPB 0 -100–100
O
3
offset for range #1.
O3_SPAN2
Conc 400 50–10000
Target O
3
concentration during span
calibration for range #2.
O3_SLOPE2
— 1 0.850–1.150
O
3
slope for range #2.
O3_OFFSET2
PPB 0 -100–100
O
3
offset for range #2.
DYN_ZERO
— OFF OFF, ON
ON enables dynamic zero calibration for
contact closures and Hessen protocol.
OFF disables it.
DYN_SPAN
— OFF OFF, ON
ON enables dynamic span calibration for
contact closures and Hessen protocol.
OFF disables it.
RANGE_MODE
— SNGL
0
SNGL, DUAL,
AUTO
Range control mode. Enclose value in
double quotes (") when setting from the RS-
232 interface.
A-12 04402 Rev D.4