8863 Thermoparamagnetischer Sauerstoffanalysator
8863 Thermoparamagnetischer Sauerstoffanalysator
8863 Thermoparamagnetischer Sauerstoffanalysator
     
Vorschau: 8863 Thermoparamagnetischer SauerstoffanalysatorVorschau: 8863 Thermoparamagnetischer SauerstoffanalysatorVorschau: 8863 Thermoparamagnetischer Sauerstoffanalysator

Gasanalyse

8863 Thermoparamagnetischer Sauerstoffanalysator

Rugged Oxygen analyser for inerting control and heavy-duty applications. Selected materials and modular design makes this analyser practically indestructible and the ideal solution for safety-critical industrial applications.

Rugged Oxygen analyser for inerting control and heavy-duty applications. Selected materials and... mehr
Produktinformationen "8863 Thermoparamagnetischer Sauerstoffanalysator"

Rugged Oxygen analyser for inerting control and heavy-duty applications. Selected materials and modular design makes this analyser practically indestructible and the ideal solution for safety-critical industrial applications.

 

The weatherproof and explosion proof 8863 is designed for field installation in the most severe conditions, minimizing the sample conditioning requirements.

 

Measureable Gas

Oxygen [O2]

 

Main Features

Extreme Roughness

- No inner moving parts

- Wet parts in AISI316 (optional Hastelloy C276) and glass

- Resistant to corrosion by acid and solvents

 

High Performances

- Sensing unit temperature controlled

- Insensitive to ambient temperature variations

- Installation position and vibration don’t alter the accuracy and stability of the measure

- 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

Spezifikation

Performance Specification

Accuracy

± 1% of span (output signal).
Further improvable with autocalibration.

Repeatability

± 0.3% of span (short term).

Reproducibility

24 hours: ± 1% of span.

Linearity

with control unit: better than ± 0.5% of full scale

Response Time

Initial: < 1 sec.;   90% of step-change: 30 sec.

(with max. 2000 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 ± 0.07% of measure per °C
(whichever is greater)

Ambient Temp. Influence
(
+50°C  ÷ +55°C)

- 1% of measure per °C max.

Atm. Pressure Influence

± 0.18 % of reading per hPa

Flow Rate Influence

< 0.5% of span over flow range of 250 to 1000 cc/min.

Line Voltage Influence

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

Gas Interference

< ± 0.01% O2 reading per 1% CO2
< ± 0.07% O2 reading per 1% H2
< ±
0.007% O2 reading per 1% H2O;
< ± 0.01% O2 reading per 1% SO2

 

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

non-normalized output current that functions as input of the selected ADEV control unit

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 ÷ 30 Vdc, 45 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

- Inerting Control

- Centrifuges

- Reactor Feed Gases

- Chemical & Pharmaceutical

- Power Plants & Nuclear

- Sulphur Production

- Biogas & Landfill Gas

- Steel & Metal Processing

- Solvent Recovery

- Fertilizers

 

Sampling System

The 8863 needs an external sampling system able to deliver an almost clean sample gas to the analyser at the proper temperature, pressure and flow rate.

ADEV has a wide experience in process and can provide the 8863 analyser combined with a sample and condition system designed for the specific application requirements. Contact ADEV for details.

 

Measuring Principle

Thermoparamagnetic 8863 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. Associated with each field is a thermistor pair, consisting of a measuring thermistor and reference thermistor.

The measuring thermistor is mounted in the cavity within its respective magnetic zone; the corresponding reference thermistor is mounted in the cavity just outside its magnetic zone. A sample inlet port and a sample outlet port are arranged to permit a portion of the flowing sample to diffuse into the cavity, where it comes under the influence of thermal gradients and magnetic fields. The effect of the resulting thermo-magnetic action on the thermistors provides the measuring means.


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