Eurofid Extractive Analyzer

Analyzers and Process Instrumentation

EUROFID Total Hydrocarbon Analyzer

PRODUc T InFORmATIOn

Precise Determination of Hydrocarbons in Air

2 EUROFID | SIcK mAIHAK SIcK mAIHAK | EUROFID 3

close coupled

Analyzer unit in the in-line mo- ✔del is directly mounted on the stack/duct.

No heated sampling line re- ✔quired which means lower in-stallation cost

No system response delay ✔

The control unit is remotely lo- ✔cated for easy operator access.

close coupled +++ Low maintenance +++ Quick Response

Quick Response

In-line unit provides rapid re- ✔sponse (T90 < 2 sec)

Ideal for safety applications ✔(LEL monitoring)

Typical Applications

Total hydrocarbon emission ✔monitoring for EPA Method 25A compliance from waste incinerators, catalytic or ther-mal oxidizers, solvent recovery systems or power plants.

Measures both, trace levels ✔and concentrations up to 100 vol%.

Condensing gases at process ✔temperatures up to 1,100 °F. Temp. on entering probe pipe of the in-line unit < 750 °F, dew point temp < 425 °F.

Detection of hydrocarbon ✔break-through in exhaust air cleaning plants or chemical purification units.

LEL measurement of potential- ✔ly explosive gas mixtures during manufacturing of solvent-based products.

Exhaust gas analysis from ✔combustion engines

Monitoring of hydrocarbons in ✔ambient air for leak detection and/or worker safety.

Our Expertise And Experience For Your Benefit

Low maintenance

Integrated sample dilution red- ✔uces maintenance and in- creases up-time.

No moving parts, no wear and ✔tear.

Easy access to sample gas fil- ✔ter, the only part requiring rou-tine maintenance.


measuring Principle

measuring principle

The gas concentration is converted into an electrical signal by means of a flame ionization detector (FID). Inside the FID a hydrogen flame burns in the presence of hydrocarbon-free combustion air. When the sample containing hydrocar-bon molecules reaches the center of the flame, the molecules are cracked and stripped causing CH fragments to form. These fragments are oxidized by the oxygen in the combustion air and

the CHO+ ions form. The ion current is measured and is proportional to the carbon ratio of organic compounds in the sample.

The sample gas is extracted from the process through the sample gas filter by means of a dual-stage jet. Sample gas is then diluted and compressed and passed on to the bypass. All parts in contact with the sample gas are heated in the sensor block to a con-stant temperature.

The dilution rate depends only on the pressures in the jet device. These val-ues are measured continuously by pressure sensors P1, P2 and P3. The propellant pressure of the jet device is set to a specific value. An ejector char-acteristic field is used to calculate the dilution from the pressure ratios. A por-tion of the diluted sample gas flows to the FID detector which continuously measures the gas concentration.

Bypass

Sample gas

Filter

Secondary nozzle

Primary nozzle

Heated sensor block

Pressure controller

P1

P2

P3

FID


System component Overview

EuroFID modular system

The EuroFID system is both mechani-cally and electrically modular and con-sists of the analyzer unit, terminal box and control unit (optional: I/O terminal module).

RS232

Analyzer unit

Panel version (wall mounting)

In-line version

Analyzer unit selection

Terminal box

RS42242 V AC

RS422230/115 V AC

control unit

I/O module

Power supply

230/115 V AC

Digital and analog inputs/outputs

Analog inputs/outputs: 4 x 0...10 V; 2 x 0/4...20 mA Digital inputs/outputs: 3 x 24 V DC/10 mA; 8 x 24 V AC/100 mA

Process control system (Host)

Printer

RS232

Power supply24 V DC


EUROFID Analyzer Unit

This type is usually fitted on the mounting plate inside of the measuring cabinet. Sample gas is supplied through a heat-ed line. This configuration provides a cost-effective extrac-tive emission measuring unit.

The in-line version is flanged directly to the sampling point. All of the other “typical” sample conditioning components such as heated lines, gas sampling probe and filter are not required. Short gas paths provide a quick response time of < 2 seconds.

Analyzer unit in wall (panel) mounting enclosure

In-line analyzer unit

components of the analyzer unit

Heated sensor block ✔

Pneumatic supply: ✔ provides operating gases for ignition, ensures continuous operation of the detector flame and di-lution of the sample gas as well as de-livery of calibration gases to set the zero and end points.

The control electronics include an elec- ✔trically isolated mains adapter that supplies the required operating voltage

Microcontroller: to process analog and ✔digital output signals and to electroni-cally isolate signals for data transfer via the RS422 serial interface

All instrument-specific data from the ✔analyzer unit such as the characteristic curve of the two-stage jet device is stored in the non-volatile memory. The analyzer unit is connected to the con-trol unit via the serial interface.

Instrument air Calibration gas

Pneumatic control

Pressure and solenoid valve control FID amplifier Flame control IgnitionPressure monitor Heating

Memory Microcontroller

Pow

er s

uppl

y

Heated sensor block Control electronics

ProcessRS422

42 V AC


control Unit and Analyzer Unit in 19" Design

control unit

Self-explanatory menu controlled operation with ✔additional information in clear text

LED and four light-emitting diodes: ✔Alarm, Failure, Maintenance and OK

Three additional serial interfaces to connect the I/O ter- ✔minal strip and a laptop, a modem or any other computer or to another control unit.

The control unit is mounted in a 19″ rack, 5″25 high or ✔optionally a half-size 19″ rack, 7″ high.

The following operating modes are available for instrument functions:

Manual operation • Fully automatic operation • External control via I/O terminal module •

Half-size 19″ rack

19″ rack

Example: standard system cabinetAnalyzer unit in 19″ rack:

The analyzer unit is integrated in a 19″ rack which can be fitted in ‘standard’ system cabinets. Together with the terminal box integrated in the control unit, the overall height of the complete analyzer is 14 inches.

Industrial housing for hazardous zone

The In-line EuroFID in stainless steel hous-ing is approved for use in potentially explo-sive areas in Zone 1. Terminal box, heating (optional) and/or process gas lock-out are integrated in the pressurized housing.


EuroFID Technical Data measured Data Inline Wall housing 19" rack Industrial housing

for hazardous zonesMeasurements LEL

Process, EmissionProcessEmission

ProcessEmission

ProcessLEL

Measured value display 4 ½ digit and analog as bar graph

Measuring range:Lowest measuring range • Highest measuring range•

6 selectable measuring ranges 100 vol%10 ppm relative to C3H8100 vol%

Non-linearity ± 1 % of selected range

Detection limit < 3 % of full scale range 1) 3)

Repeatability ≤ 1 % of full scale 5)

Response time (T90) > 1.5 s (LEL) 2) 4)

> 2.5 s (Emission) 2)> 2.5 s 2) > 2.5 s 2) > 1.5 s 2) 4)

Zero drift < 0.5 % of measuring range end value/month 1)

Span drift < 3 % of measuring range end value/month1)

Oxygen synergism < 1.8 % based on measurement of 80 ppm C3H8

Warm-up time < 1.5 hours

Sample conditions

Flow Min. 0.5 l/min, max. 6.2 l/min

Max. temperature 750 °F (400 °C) 2)

Sample gas connection Stst sample tube OD 6 mm, ID 4 mm

For sample gas line with OD 6 mm, ID 4 mm Stst sample tube OD 6 mm, ID 4 mm

Pressure range Atmospheric, ± 0.7 psi

Auxiliary gases

Calibration gas Concentration of approx. 80 % hydrocarbon of the measuring range used relative to the propane equi-valent in air @ 44 PSIG, consumption only during span calibration: 3 l/min

Instrument air From compressed air lines with residual HC content < 1% of meas. range, max. 4 ppm non fluctuating, no condensation (Dew point at least 50°F under lowest possible outside temperature to avoid con-densation in lines). Pressure: 58 +/- 7 PSIG, consumption: min. 6 l/min, max. 17 l/min

Fuel gas Hydrogen, 5.0 grade, H2/He mix. Residual HCs < 0.5 ppm, @ 44 PSIG, consumption during conti-nuous operation: 30 cc/min, for H2/He mix: consumption approx. 58 cc/min

Connection Quick-connection coupling for 6 mm tubes

I/O signalsAnalog outputs Qty. 2 isolated 4–20 mA outputs, max. load 500 (Ohm)

Digital outputs 8 voltage-free FET switches, max. load 24 V AC/DC, 100 mA

Digital inputs 3 inputs, voltage free, 24 V DC, 10 mA , for low calibration gas, calibration lock-out and service inter-rupt

Power requirements and consumption

115 or 230 V AC, 48 ... 62 Hz, max. 330 W, typically 280 W during operation

1) Measuring range limit value = 10 ppm C3

2) Depending on equipment fitted 3) Under field conditions 4) Up to 2.5 sec depending on sample flow 5) At constant temperature and pressure

Technical Data Overview


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W E O F F E R yO U A c H O I c E

SICK MAIHAK offers a number of sensor-based techniques for anal-ysis, ranging from the continuous gas and dust measurement to specialized applications for water and liquid analysis. Within the process measurement technol-ogy SICK MAIHAK products play a central role in determining volume flow of gases and level of bulk materials.

A R O U n D T H E W O R L D T O yO U R S E R v I c E

Where ever you are, our global network of subsidiaries and rep-resentatives is able to supply qualified support when you need it. We deliver the equipment for your measuring tasks, provide documentation and training. Our highly skilled service staff offers support during installation, com-missioning and maintenance of the instruments.

SIcK GROUP

SICK MAIHAK represents the pro-cess automation segment of the SICK group, one of the worlds leading manufacturer of intelligent sensors and sensor solutions. With its 4,000 employees, SICK is able to offer an extensive port-folio of products and services on the market of factory and process automation. www.sick.com

AT H O m E I n T H E I n D U S T R I A L S E c T O R

We can build on years of experi-ence in the field of Analyzers and Process Instrumentation. That is why we are at home in the world of cement and power plants as well as in the chemical and petrochemical sector. Be it emis-sion control at waste treatment or process optimization for steel manufacturing, SICK MAIHAK offers tailor-made solutions.

A n A Ly z E R S A n D P R O c E S S I n S T R U m E n TAT I O n

Administrative centerSICK MAIHAK Inc.6900 West 110th StreetMinneapolis, MN 55438Phone 952-941-6780Fax 952-941-9287

Systems Engineering and IntegrationSICK MAIHAK Inc.15415 International Plaza Drive, Suite 100Houston, Texas 77032Phone 281-436-5100 Fax 281-436-5200

[email protected] www.sickmaihak.com

Documents

Eurofid Extractive Analyzer