Zero/Span Calibration On Auto Range Or Dual Ranges - Teledyne 400E Instruction Manual

CALIBRATION PROCEDURES
Once the CALS and CALZ procedures are activated, the concentration field of the
instrument's front panel display will change to "XXXX" and the output of t he analog
outputs will go to 0.0 mV. Also, the SAMPLE LED on the front panel will begin to blink
indicating that the analyzer's iDAS Holdoff feature is active. These conditions will persist
The same thing will occur after the analyzer is returned to SAMPLE mode by pushing the

7.4.1. Zero/Span Calibration on Auto Range or Dual Ranges

If the analyzer is being operated in Dual Range mode or Auto Range mode, then
the High and Low ranges must be independently calibrated.
When the analyzer is in either Dual or Auto Range modes the user must run a
separate calibration procedure for each range. After pressing the CAL, CALZ or
CALS keys the user is prompted for the range that is to be calibrated as seen in the
CALZ example below:
Analyzer enters
ZERO CAL Mode
See Table 5-1 for Z/S
Valve States during
this operating mode
Once this selection is made, the calibration procedure continues as previously
described in Section 7.2. The other range may be calibrated by starting over from
the main SAMPLE display.
174
NOTE:
for 60 seconds.
EXIT button.
SAMPLE RANGE = 500.0 PPB
CALZ
< TST TST > CAL CALS
SAMPLE RANGE TO CAL: LOW
HIGH
LOW
SAMPLE RANGE TO CAL: HIGH
LOW HIGH
ZERO CAL M RANGE = 500.0 PPB
< TST TST > ZERO CONC
Continue Calibration as per
Standard Procedure
Model 400E Ozone Analyzer
O3 =XXX.X
SETUP
ENTR SETUP
ENTR SETUP
O3 =XXX.X
EXIT
Instruction Manual
WAIT 10
MINUTES
Or until the
reading
stabilizes and
the ZERO button
is displayed
P/N 04316 Rev: B