GE Sensing O2.IQ Specifications

O2.IQ oxygen analyzer
packaged solution

Features

O2.IQ simplifies and standardizes your options for reliable
oxygen measurement in a variety of applications. At the
heart of this package is the oxy.IQ analyzer supported
by a sample conditioning system purposefully designed
to maintain ease of access and functionality in a space
conscious housing. Simply mount the O2.IQ, connect to
the two terminals and the analyzer is ready for its field
calibration. Key highlights include:

• Wall mounted NEMA 4X and IP66 stainless steel package

• Features the oxy.IQ electrochemical analyzer

• Package designed with ease of access including
accessibility to sensor cell replacement

• Sample conditioning system provides isolation, filtration,
pressure regulation, flow and pressure indication along
with a clear window for easy viewing of all readings

Applications

The standard O2.IQ package has been designed with
oxygen measurement in natural gas pipelines in mind;
however, the package is easily transferrable to a wide range
of applications, given its standard sampling conditioning
system. The pressure regulation functionality allows for
inlet pressures of up to 400 psig (27.5 bar) and reduces to
ambient pressure for accurate measurement.

The compact footprint of this stainless-steel package
combined with the loop powered oxy.IQ analyzer make it
perfect for safe and hazardous area locations. Markets and
applications served include:

• Industrial gas production

• Natural gas

• Petrochemical

• Heat treating and annealing

• Inert weld gases

• Gaseous hydrocarbon streams

Ordering configuration

The O2.IQ is available in 7 different off-the-shelf configurations covering general purpose to hazardous area requirements,
barrier types and metric or imperial fittings. The selection grid highlights the ordering part number which corresponds to the
features required for your application and relevant area classification.

Fitting selection Area classification Barrier type

Class 1

Div 2 Non

incendive

Zener

barrier

Galvanic

isolator

Ordering Part No. Imperial Metric

O2.IQ-CL1-DIV1-Z

O2.IQ-CL1-DIV1-G

O2.IQ-CL1-DIV2

O2.IQ-IS-Z

O2.IQ-IS-G

O2.IQ-GP-I

O2.IQ-GP-M

✔ ✔ ✔ ✔

✔ ✔ ✔ ✔

✔ ✔

✔ ✔ ✔

✔ ✔ ✔

✔ ✔

✔ ✔

General

purpose

Intrinsically
safe global

Class 1 Div 1

The O2.IQ also requires selection of the
appropriate electrochemical OX sensor
for the oxy.IQ. Ordering configurations
for the OX sensors are as follows and
please refer to the sensor interference
gases for further information.

OX-1 Low range ppm measurement, standard background gases

OX-2 Low range ppm measurement, acid background gases

OX-3 Percent measurement, standard background gases

OX-4 Percent measurement, acid background gases

OX-5 Low/mid-range ppm measurement, standard background gases

Oxygen sensor interference gases

Ordering Part No. Summary

Gas OX-1 and OX-5 OX-2

Continuous Intermittent (1) Continuous Intermittent (1)

H2S <5 ppm <10 ppm 0.0005% 0.01% 0.001% 0.1%

SO

SO

3

2

<10 ppm <10 ppm 0.01% 0.1% 0.01% 0.1%

<10 ppm (3) 0.01% 0.1% (3) (3)

HCl <1000 ppm (3) 0.1% 1.0% (3) (3)

HCN <1000 ppm (3) 0.1% 1.0% (3) (3)

CO

2

NO

2

Cl

2

(1) Recommended maximum exposure 30 minutes, followed by flushing with ambient air for an equal period.
(2) Minimal effect ons ensor performance, but produces signal interference of 1:2 ratio for ppm levels only (e.g., 100 ppm NO2 looks like 200 ppm O2).
(3) Minimal effect on sensor performance.

<1000 ppm (3) 0.1% 20 & (3) (3)

(2) (2) (2) (2) (2) (2)

(2) (2) (2) (2) (2) (2)

OX-3 OX-4

Application parameters

• Sample Gas pressure: 0 - 400 psig (0 - 27.5 Bar)

• Sample gas temperature: 32 to 113°F (0 to 45°C)

• Power requirements: 24 to 28 VDC at 50 mA

oxy.IQ specifications

All installations

Accuracy

• ±1% of range at calibration point

• ±2% of range at the calibration point for the 0 to 10 ppmv
range (OX-1 or OX-2 only)

Repeatability

• ±1% of range

• ±2% of range for the 0 to 10 ppmv range (OX-1, OX-2 only)

Resolution

• ±0.1% of range

Linearity

• ±2% of range (OX-1, 2, 3, 5)

• ±5% of range (OX-4)

O2 Sensor operating temperature

32 to 113ºF (0 to 45ºC)

Sample pressure

Vented to atmosphere during operation and calibration

Atmospheric pressure effect

±0.13% of reading per mmHg (directly proportional to
absolute pressure). During calibration, pressure and flow
must be kept constant.

Process connection

1/8 in. NPT inlet and outlet

Dimensions

4.10 x 2.75 x 2.05 in (104.1 x 69.9 x 52.1 mm)

Weight

1.35 lb (612 grams)

Sample flow rate

1.0 SCFH (500 cc/min) recommended for process units

Electrical classification certification

Intrinsically safe

USA/Canada
IS for Class 1, Groups ABCD, T4
AEx ia IIC T4
ATEX and IECEx
Ex ia IIC Ga T4 Tamb -20 to 60ºC
IS package, non-incendive without use of Zener barrier or

galvanic isolator:

• USA/Canada: Class 1, Div 2, Groups A, B, C, D: T4

European compliance

Complies with EMC directive 2004/108/EC

User-selectable measurement range
and corresponding sensor

Oxygen Content

0 to 10 ppmv

0 to 20 ppmv

0 to 50 ppmv

0 to 100 ppmv

0 to 200 ppmv

0 to 500 ppmv

0 to 1,000 ppmv

0 to 2,000 ppmv

0 to 5,000 ppmv

0 to 10,000 ppmv

OX-1 and

OX-2

✔

✔

✔

✔ ✔

✔ ✔

✔ ✔

✔ ✔

✔ ✔

✔ ✔

✔ ✔

OX-3 and

OX-4

0% to 1%

0% to 2%

0% to 5%

0% to 10%

0% to 25%

0% to 50%

OX-5

✔

✔

✔

✔

✔

✔