8867 Analysegerät für Brennbare Stoffe
8867 Analysegerät für Brennbare Stoffe
   
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Gasanalyse

8867 Analysegerät für Brennbare Stoffe

Based on catalytic combustion system, the 8867 provides accurate in line analysis of flue gas and other gases with Oxygen deficiency in order to determine the total concentration of combustible gases in the sample stream (typically expressed as CO, CH4 or H2 in accordance to the most representative component).

Based on catalytic combustion system, the 8867 provides accurate in line analysis of flue gas... mehr
Produktinformationen "8867 Analysegerät für Brennbare Stoffe"

Based on catalytic combustion system, the 8867 provides accurate in line analysis of flue gas and other gases with Oxygen deficiency in order to determine the total concentration of combustible gases in the sample stream (typically expressed as CO, CH4 or H2 in accordance to the most representative component).

 

The air dilution port, combined with the ADEV special dilution system can ensure a perfect measure even in case of Oxygen deficiency (that is the most dangerous condition).

 

Fully proved technology, widely used in Iron & Steel plants and petrochemical plants.

 

Measureable Gas

Combustibles

 

Main Features

Extreme Roughness

- No inner moving parts

- Wet parts in AISI316 and glass

- Resistant to the most severe industrial environments

 

High Performances

- Possibility to measure the combustibles also in condition of Oxygen deficiency thanks to the special ADEV dilution system

- Sensing unit temperature controlled

- Insensitive to ambient temperature variations

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

 

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

± 4% of span (output signal).

Repeatability

± 0.5% 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: < 10 sec.

(with max. 2000 cc/min. flow rate)

Drift

Zero: max. ± 2% of span per week

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

Ambient Temp. Influence

Better than ± 1% of full scale on the entire temperature range

Atm. Pressure Influence

± 0.015% of reading per hPa

Flow Rate Influence

The ratio between dilution air flow rate and sample flow rate must be constant

Line Voltage Influence

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

 

Operative Specification

Sample Flow Rate

with 0-5% range:             1000 cc/min.

with 0-10% range:           500 cc/min.

Dilution Air Flow Rate

with 0-5% range:             1000 cc/min.

with 0-10% range:           1500 cc/min.

Total flow rate (sample + dilution air):

1000 ÷ 2000 cc/min.

Sample 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

- Iron & Steel Plants

- Petrochemical Plants

- Combustibles monitoring in every type of furnace, oven and tank

 

Sampling System

8867 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 can provide the 8867 analyser combined with a very specific sample and condition system designed to have an Air / sample gas mixture severely guaranteed as constant and, consequently, to get the measure even in case of Oxygen deficiency in the sample (condition that is often linked to an high presence of combustibles). Contact ADEV for details

 

Measuring Principle 

The measurement is based on a Wheatstone bridge unbalance resulting from the heat produced from oxidation of the measured gases by catalytic combustion. A flow of dilution air is provided together with the process gas through the sensing unit.

The combustion takes place on the catalytically coated measuring filament (the active arm of the bridge). The other active arm is identical to the first one but without catalytic properties. Both the arms are identically influenced by flow rate, pressure, temperature and background variations.


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