beautypg.com

Basic o, Sensor calibration procedure – Teledyne 9110TH - Nitrogen Oxides Analyzer User Manual

Page 68

background image

Model 9110TH NOx Analyzer

Getting Started

Teledyne Analytical Instruments

48

3.7.2. BASIC O

2

SENSOR CALIBRATION PROCEDURE

If your instrument has an O

2

sensor option installed, that should be calibrated as well.

3.7.2.1. O

2

Calibration Setup

The pneumatic connections for calibrating are as follows:

C

ali

b

ra

ted N

2

at

HIG

H

S

pan

Co

nc

e

nt

rat

io

n

C

ali

b

ra

ted O

2

at

20

.8

%

Sp

an

Co

nc

en

tr

at

io

n

Source of

SAMPLE GAS

Removed during

calibration

Instrument

Chassis

SAMPLE

EXHAUST

PUMP

VE
N

T

3-way

Valve

Manual

Control Valve

VENT

here if input

is pressurized

Figure 3-25:

O

2

Sensor Calibration Set Up

O

2

SENSOR ZERO GAS: TAI recommends using pure N

2

when calibration the zero

point of your O

2

sensor option.

O

2

SENSOR SPAN GAS: TAI recommends using 21% O

2

in N

2

when calibration the

span point of your O

2

sensor option.