Manual Zero/Span Check With Izs Option; Automatic Zero/Span Check; Dynamic Zero/Span Calibration - Teledyne 200A Instruction Manual

Teledyne API Model 200A NO

7.3 Manual Zero/Span Check with IZS Option

The Internal Zero/Span (IZS) system can be operated from the front panel keyboard. When the
M200A is in the SAMPLE mode, and the IZS option is installed, the CALS (Calibrate-Span) or
CALZ (Calibrate-Zero) buttons will be visible. When the buttons are pressed, valves are
switched to allow zero air or NO
It is not possible to calibrate the M200A on a NO
option is enabled. This is because the NO
a NO tank with calibration certificate for complete calibration or see CAL-ON-NO2 Section 7.6.
To do a manual zero check with the IZS Option, press CALZ, then wait about 10 minutes for the
zero reading to stabilize. The zero value in the display, and analog output is the zero value. Press
EXIT to return to SAMPLE mode. This procedure does not change the zero calibration of the
instrument.
To do a manual NO
stabilize. The concentration value in the display, and analog output is the span value. Press EXIT
to return to SAMPLE mode. This procedure does not change the span calibration of the
instrument.

7.4 Automatic Zero/Span Check

In a typical air monitoring application it is desirable to have the analyzer automatically check
(AUTOCAL) its calibration each day. If equipped with Z/S valves or the IZS option, the M200A
can provide a daily calibration check. There are many operational choices such as moving the
check backwards or forwards a fixed time each day.
Setup of the AUTOCAL is covered in Table 6-2.

7.5 Dynamic Zero/Span Calibration

The AUTOCAL system described above can also optionally be used to calibrate the instrument
once each 24 hours. The dynamic calibration is enabled by setting Dynamic Zero/Span buttons
to ON.
Before proceeding with enabling DYNAMIC Z/S you must setup the AUTOCAL feature.
Enabling AUTOCAL is described in Table 6-2. To enable DYNAMIC Zero/Span Calibration:
Analyzer Instruction Manual, 02246, Rev. F1
X
gas to be input into the instrument.
2
check, press CALS, then wait about 10 minutes for the NO
2
permeation tube unless the CAL-ON-NO2
2
permeation tube contains no NO gas. We recommend
2
7-7
reading to
2