Analytical Industries Inc (AII) PI2-UHP 50, PI2-UHP 100, PI2-MS 500, PI2-MS 1000 Specifications

Oxygen Analyzers for Ultra High Purity Gases

PI2-UHP 50/100 and PI2-MS 500/1000

Based on the stable and long-life Pico-Ion oxygen sensors, the PI2 range of trace oxygen analyzers
provides accurate and stable measurements of oxygen down to low parts per trillion. Low cost
of ownership through minimal maintenance of this high-performance oxygen analyzer make
measurement of oxygen down to ppt level easy and affordable for customers with limited budgets.

PPM

Highlights

• Measuring trace O2 in ultra-pure Ar, H2, He and N

• LDL to less than 100 ppt

• Low cost of ownership

• User friendly and easy to operate and maintain

• Fast recovery from process upsets

• Integrated bypass sample system as standard

• Optional auto calibration system with true zero

feature via O2 scrubber

Applications

2

• Quality checking of ultra-high purity gases

produced by cryogenic air separation

• Validating high purity gases used in electronics

and semi-conductor manufacture

• Commissioning UHP gas lines and processes

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30

4

56070

3030404505060

70

8

0

Second generation, no­maintenance Pico-Ion
sensor technology

A high-performance, low ppb oxygen sensor with
stable output requiring no maintenance or frequent
electrolyte additions. The innovative design of the gas
chamber maximizes the rate of oxygen reaction while
the refined proprietary sensor design provides a high
signal output per unit area to enhance sensitivity as well
as a significantly higher output. Further advantages are:

Membrane

Electrolyte

0202020

0

0

2

2

-

0H

0H

i

-

0H

-

0H

-

0H

-

-

0H

-

0H

-

0H

-

0H

-

0H

Pb0 Pb0

-

0H

0H

0H
0H

0H
0H

02020

2

-

-

0H

-

0H

-

0H

-

-

0H

-

0H

-

0H

-

0H

0

2

0

2

2

-

0H

-

0H

-

0H

-

-

0H

-

0H

0H

-

0H

-

-

0H

-

-

0H

-

-

0H

-

0H

Layer

Cathode

Electrolyte

Anode

• Lower detectable limit (LDL) of less than 100ppt

• High signal to noise ratio

• Excellent stability

• Response time of less than 15 seconds

• Minimizes the temperature dependence

• Fast recovery from higher oxygen lev els during process

upset conditions

• Approximately 12 months of continuous use

Sensor Construction

PICO ION Sensor

100

90

80

70

60

50

40

30

Oxygen Reading / Output

20.9%

20

15.2%

10

15.2%

0

0 10 20 30 40 50 60 70 80 90 100

60.6%

40.0%

40.3%

21.0%

% Oxygen Concentration

100.2%

60.3%

100.0%

Typical sensor output

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Recovery time

O

PI2-MS 1000
PI2-MS 500

PI2-UHP
100 PI2-UHP 50

Level Duration O2 Target Recovery on N2

2

9 ppm 2 minutes 10 ppb 10 minutes

Air 30 seconds 1 ppm 45 minutes
9 ppm 1 minute 10 ppb 15 minutes
9 ppm 1 minute 1 ppb 60 minutes

Simple, intuitive HMI

The analyzer is operated by proprietary easy-to-use menu-driven software and a large graphical LCD with four control
keys. The analyzer can be operated remotely via USB or RS232 and allows the operator to obtain the data, change
settings, calibrate and diagnose the instrument.

Standard Full Featured Automated
Sample System

The PI2-UHP analyzers have a full featured ultra-clean sampling
system designed for the measuring < 100 PPT oxygen:

• 316 stainless wetted parts including electro-polished tubing,
Face Seal fittings or orbital welded connections

• Integral pressure regulator and flow control

• Pneumatic diaphragm valves that operate:

- Sample and span gas inlets

- Integral bypass system that isolates the sensor from high
oxygen levels and

- An oxygen scrubber system for generating consistent
zero gas

• Temperature control of the sample system limits drift during
day-and-night cycles where ambient temperatures fluctuations were
typically ±10F°.

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Technical Specifications

PI2-MS 1000 PI2-MS 500 PI2-UHP 100 PI2-UHP 50

Measurement range

Accuracy at constant
conditions

Response time T90 <15 seconds
Recovery time See separate table on inside pages
Sensitivity (LDL) < 5 ppb < 2.5 ppb < 250 ppt < 100 ppt
Linearity < 1% of scale
Sensor GPR-12-2000 MS-2 GPR-12-2000 MS-2E GPR-13-2000 UHP-2 GPR-13-2000 UHP-2E
Sensor life at 25ºC

(77°F) and 1 atm
Calibration interval 30 days
Inlet pressure 1.4-3.4 barg (20-50 psig) with atmospheric vent, max 10.3 barg (150 psig)
Flow rate 0.5 - 1.0 Nl/m (1-2 SCFH)

Gas connections 1/4” compression tube fittings

Wetted parts Stainless Steel

0-1, 0-10, 0-100,

0-1000 ppm

< 3% of reading or ±5 ppb (whichever is greater) ±3% of reading or ±0.5 ppb (whichever is greater)

0-0.5, 0-1, 0-10, 0-100,

0-1000 ppm

12 months

(Up to 24 months for the MS versions)

0-100 ppb, 0-1, 0-10,

0-50, 0-100 ppb, 0-1,

0-100 ppm

Inlets: 1/4” face seal fittings;

Vent and pneumatic valves: 1/4”

compression tube fittings

0-10 ppm

Display Graphical LCD 12 x 7cm (5 x 2.75”); resolution 0.1

Bench top, painted sheet metal (35 x 25 x 34cm (13.9” x 9.9” x 13.4”))

Enclosure

Compensation Barometric pressure and temperature; heated sample system and sensor housing
Signal output 4-20 mA isolated, 0-1V and 0-5V
Range ID 1-5V DC or 4-20mA, optional relay contacts
Communications Choice of USB, RS232
Alarms 2-off user-adjustable alarms form C relay contacts non-latching
Operating

temperature
Power 100-240 V AC

Options: panel or 19” rack mount, wall mount

(30.5 x 30.5 x 20.3cm (12” x 12” x 8”))

0° to 45°C (32°F to 113°F)

Bench top

Options: panel or 19” rack mounting

Analytical Industries Inc. 2855 Metropolitan Place, Pomona, CA 91767 USA
Tel: [phone], Fax: [phone], www.aii1.com, e-mail: [e-mail]

Please note: Analytical Industries Inc. adopts a continuous development program which sometimes necessitates specification changes without notice.

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Please contact us for the latest version. Issue No: Analyzers for Ultra High Purity Gases_partnumber_V2_UK_1018