P8863 Paramagnetischer Sauerstoffanalysator
P8863 Paramagnetischer Sauerstoffanalysator
   
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Gasanalyse

P8863 Paramagnetischer Sauerstoffanalysator

Robust analyser for safe and hazardous areas, suitable for Oxygen enriched samples.Paramagnetic P8863 Oxygen analyzer allows the selective analysis of the O2 concentration in process gases taking advantage of its evident paramagnetic property that makes it attracted by a magnetic field.

Robust analyser for safe and hazardous areas, suitable for Oxygen enriched samples.  ... mehr
Produktinformationen "P8863 Paramagnetischer Sauerstoffanalysator"

Robust analyser for safe and hazardous areas, suitable for Oxygen enriched samples.

 

Paramagnetic P8863 Oxygen analyzer allows the selective analysis of the O2 concentration in process gases taking advantage of its evident paramagnetic property that makes it attracted by a magnetic field.

 

The specific features of the measuring principle makes the analyser virtually free from cross sensitivity by other gases, allowing its use in a variety of applications that range from purity measurement to O2 analysis in complex stream gases containing Hydrogen, Hydrocarbons and many others.

 

Measureable Gas

Oxygen [O2]

 

Main Features

High Performances

- Free from cross sensitivity by other gases in the sample

- Sensing unit temperature controlled

- Insensitive to ambient temperature variations

- Available as 4-20 mA transmitter or combined with a powerful microprocessor-based control unit

 

Easy Maintenance

- Modular construction

- Fast access to the inner PCB just unscrewing the housing cap

- Possibility to remove the entire sensing unit from the housing just by unscrewing 2 screws and leaving her housing connected to the sampling system.

 

European Compliance

- Low Voltage Directive 2014/35/EU

- EMC Directive 2014/30/EU

- Directive ATEX 2014/34/EU (optional)

 

ATEX

ATEX certification for Zone 1 / Zone 21 with protection mode:

II 2 G D     Ex db IIC T6 Gb

Ex tb IIIC T85°C Db

IP65

 

ATEX Certificate Number CESI 03 ATEX 130

Spezifikation

Performance Specification

Accuracy

General accuracy: ± 1% of span (output signal).

See note below for considerations on accuracy

Repeatability

± 0.3% of span (short term).

Reproducibility

24 hours: ± 1% of span.

Linearity

Better than ± 1% of full scale

Response Time

Initial: < 1 sec.;   90% of step-change: < 3 sec.

(with max. 1000 cc/min. flow rate)

Drift

Zero: max. ± 1% of span per week

Span: max ± 1% of span per week (without autocalibration)

Ambient Temp. Influence

(-10°C  ÷ +50°C)

± 0.002% O2 per °C or ± 0.02% of span per °C

(whichever is greater)

Atm. Pressure Influence

± 0.1 % of reading per hPa

Flow Rate Influence

< 0.5% of span over flow range of 100 to 1000 cc/min.

Line Voltage Influence

max. 0.02% of span, for each 1% change of voltage.

Operative Specification

Sample Requirements

Flow Rate: 250 ÷ 1000 cc/min.

Pressure: 3000 Pa minimum (with filter and flow meter).

Range

Refer to ordering information

Output

4-20 mA proportional to ordered range on max. load of 250 Ω (or 125 Ω if galvanically insulation module is used)

Relative Humidity

90% maximum.

Operation Temperature

-10 ÷ +50°C (14 to 122 °F ).

Temperature controlled

at 50°C

Storage Temperature

+70°C (158 °F) max.

Power Requirements

24 Vac ± 10%, 50 VA from dedicated power supplier.

Pneumatic Connections

¼” or 6 mm OD tubing (compression fittings supplied)

Wiring Connections

General purpose: 2 openings for G 3/8" (PG 13 cable grip). Ex-Proof: 2 openings for GK 1/2" (cable grip or conduit).

Weitere Infos

Applications

- Oxygen purity measurements

- Air separation plants

- Oxygen measurements in Hydrogen stream

- Inerting Control

- Power Plants

- Biogas & Landfill Gas

- Steel & Metal Processing

- Combustion gas

 

Sampling System

Due to the presence of delicate and optical parts inside the dumbbell cell, the P8863 needs an external sampling system able to deliver a perfectly clean and dry sample gas to the analyser at the proper temperature, pressure and flow rate.

ADEV has a wide experience in process and can provide the P8863 analyser combined with a sample and condition system designed for the specific application requirements. Contact ADEV for details.

 

Measuring Principle

Paramagnetic P8863 Oxygen analyzer allows the selective analysis of the O2 concentration in process gases taking advantage of its evident paramagnetic property that makes it attracted by a magnetic field. 

The Cell Block assembly is made of stainless steel and contains the cell cavity and pole pieces which produce two powerful magnetic fields in the cavity.

The magneto-dynamic cell consists of two nitrogen-filled quartz spheres arranged in the form of a dumb-bell. A single turn coil of platinum wire is placed around the dumb-bell which is suspended in a symmetrical non-uniform magnetic field. At its center, the dumb-bell bears a small mirror.

When the surrounding gas contains Oxygen the spheres are pushed out of the magnetic field caused by the         relatively strong Para magnetism of Oxygen. The force on the dumb-bell is corrected by a current through the coil which is controlled by a photo-detection system via a light beam and the mirror on the dumb-bell.

The feedback current, required to compensate the torque acting on the dumb-bell will be proportional to the Oxygen concentration in the gas sample through the cell.


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