Teledyne 6200E - Sulfides Analyzer - Manual (Page 168)

Calibration Procedures Model 6200E Instruction Manual
168 M6200E Rev: A1
7.6. Manual Calibration Checks with IZS or Zero/Span
Valves
Zero and span checks using the zero/span valve or IZS option are similar to that described in
Section 7.3, except:
On units with an IZS option installed, zero air and span gas are supplied to the analyzer through
the zero gas inlet and from ambient air.
On units with a zero/span valve option installed, zero air and span gas are supplied to the analyzer
through the zero gas and span gas inlets from two different sources.
The zero and calibration operations are initiated directly and independently with dedicated keys
CALZ and CALS.
To perform a manual calibration check of an analyzer with a zero/span valve or IZS Option
installed, use the following method:
NOTE
The instrument can only be fitted with one type of permeation tube at a time. Therefore
the IZS option can only be used to calibrate or check the instrument for one gas, H
2
S or
SO
2
, but not both.