ADEV srl Via S.Eurosia n. 27/A – 20031 Cesano Maderno (MI) - Italy Internet: http://www.adev.it 09/07/07 Tel./ Phone: +39 - 0362/641684 - 574775 Fax. +39 – 0362/575058 e-mail: info@adev.it ds 8869 / REV 5 ATEX

ANALYTICAL PROCESS INSTRUMENTATION

Infra Red Analyser

A51521

− General purpose or explosion proof housing for sensing unit.

− Diagnostics, radiation losses and temperature control.

− Signal transmission from Sensing Unit up to 500 mt. over shielded wires.

− High speed of response and excellent stability through true single beam source design and elimination of gas filled cells.

− No moving parts. Easy maintenance thanks to modular design.

− Precision optical filters minimize effects of background gases.

− Unique source-emission control permits up to 20% windows fouling without effect on accuracy of reading.

Meets European standard Directives:

- Directive 89/336/CEE - EN 61000-6-2: 2001 - EN 61000-6-3: 2001 - EN 50270: 1999 - Directive 73/23/CEE – 93/68/CEE - Directive 94/9/CE ATEX

ds 8869 / REV 5 ATEX -2- 09/07/07

Sensing Unit

Accuracy: ± 1% of span (output signal). Repeatability: ± 0.3% of span (short term) Reproducibility: 24 hours: ± 1% of span. Response Time: maximum for 2000 cc/min flow: initial: less than 1 sec.; 90% of step-change: 6 seconds. Drift: Zero: ± 2% of span per week, maximum. Span: ± 1% of span per week, maximum (without self calibration). Ambient Temperature Influence: ± 0.05% of span / °C Atm. Pressure Influence: ± 0.18 % of reading per hPa Sample Flow Rate Influence: less than 0.5% of span over flow range of 250 to 2000 cc/min. Line Voltage Influence: 0.02% of span, maximum, for each 1% change of voltage. Gas Interference: depending on gas. Specified in calibration certificate. Typical < 2% of full scale. Sample Requirements Sample Flow: 250 ÷ 2000 cc/min. Sample Pressure: 3000 Pa minimum (with filter and flow meter). Linearization: within 1% of span accuracy (without self calibration). Measuring Range: see suffix C on the ordering information. Measurable Components: CO,CO2, CH4, SO2, NH3, H2O, C2H4O, others (hydrocarbons, etc...) Power Requirements: 24 ÷ 30 Vdc 40 VA directly or from power supply energized with 115 Vac ± 10 Vac or 230 Vac ± 20 Vac; 50/60 Hz, 40 VA. Material Contacting Sample Gas: AISI 316, Buna-N, Teflon, Calcium Fluoride, Quartz, Gold. Pneumatic Connections: ¼” or 6 mm OD tubing (compression fittings supplied) Wiring Connections: 2 openings for GK 1/2" (cable grip or conduit). Ambient Requirements Relative Humidity: 90% maximum. Temperature Range: -10 to +50 °C (14 to 122 °F ). Temperature control: at 65°C Storage Temperature: 70° C (158 °F) maximum.

Physical Specification Weight: 8 kg Dimensions: 200 x 553 (max.) x 154 mm Finish: Epoxy grey textured enamel Protection: IP65 (heavy duty, water and dust tight) Position Requirements: must be mounted within 30° of vertical

Technical Specification

Under these conditions the detectors are adjusted to provide a perfect balance; that is, no output from the bridge. If an absorbing gas such as CO2 is admitted into the sample cell, it will absorb energy and therefore decrease the amount of energy falling on the measuring cell, resulting in a bridge unbalance which is directly proportional to the concentration of the selected gas. With this method, neither gas-filled reference cells nor mechanical choppers are required. The 8869 I.R. Analyzer can be supplied in a general purpose or explosion-proof housing. Both types of housing are rugged cast aluminum construction which allows reliable operation under adverse ambient conditions. The sensing unit electronic assembly incorporates some of the solid state electrical circuits:

− Current Regulator: supplies constant current to the thermistor cell bridge unit.

− Proportional Action temperature Controller: maintains the entire cell block at a constant temperature.

− Proportional Action Source controller: maintains the radiation received at the detector constant compensating for windows and cell fouling.

− Voltage-to-Current Converter/amplifier: its current output is transmitted to the analyser control unit.

The heart of the model 8869 Infrared Analyser is the Sensor Assembly, which consists of two helically-wound Nichrome wires which provide the I.R. source, a temperature-controlled sample cell through which the sample passes, and a detector housing consisting of two highly stable thermistor detectors (1 reference and 1 measuring) which are connected in opposite arms of a Wheatstone

bridge circuit. A narrow band-pass interference filter is located in front of the measuring thermistor . Assuming that the sample cell is filled with a non-absorbing gas such as ni trogen, al l of the radiation will reach the detector assembly. Only that portion of the radiation t r a n s m i t t e d b y t h e interference filter will fall on the measuring thermistor, while a part of the total radiation is reflected by the polished walls to the r e f e r e n c e

This option, in standard or explosion proof housing, is mounted on one side of the sensing unit and has two basic functions: it permits a check of cell and detector heaters by indicating the heater voltage and it protects the infrared source from hazard of excess power input.

Troubleshooting

Analytical Process Instrumentation

ADEV srl

Explosion Proof housing (optional) Protection Mode: II GD EEx-d IIC T6 IP65 T85°C Meets European Standard directive ATEX 94 / 9 / CE

Measuring thermistor Reference thermistor

A51522

Filter

I.R. source Sample outlet

Sample inlet

Gasket Window Heaters

Window

Gasket Heaters

Reliable Solid State Circuit Simplified Modular Construction

Sensing Unit M702 Control Unit

Acquisition auto cal (opt)Linearization alarms (opt) Compensation display Range selection diagnostics mA isolated output RS232C (opt)Temperature

controller

Power supply Background

compensation

I.R. source

Sample cell

Detector

Source voltageregulator

ds 8869 / REV 5 ATEX -3- 09/07/07

Analytical Process Instrumentation

ADEV srl

Display It provides a continuous readout indication of the requested variable in engineering units (ex. %), of alarms set point and alarms condition.

Single or dual alarm A single alarm (high or low) or dual alarms (one high and one low, two high or two low) can be provided as option. Each alarm consists of: 1) a keyboard configurable alarm threshold; 2) a LED, which is lit when an alarm is detected; 3) a relay contact that can be used to actuate an external signal or to start a shutdown process device.

Auxiliary functions Other options with diagnostic and faulty calibration contacts are available (contact Adev technical office).

Standard Control Unit M702

A5150800

Standard Control Unit dimensions A5103600

Inputs Input signals: 3 adjustable and linearizable from 10 mV with accuracy better than 1:10000 Scanning time: 0,5 seconds Conversion Type: double ramp Resolution: 1/20000 Input impedance: 100 Mohm typical Isolation between channels: none Alarms (rating) 1 Contact: N.O./N.C. 1 A @ 250 Vac (on order, define the alarm contact condition -soldering type -. Refer to suffix E). Set: programmable on 100% of range Relay status: normally triggered / not triggered Number of alarms: 2 on concentration. Refer to suffix D and note 1. Threshold: to choose on order; field adjustable. Refer to suffix D, H and note 1. Serial interface Standard: RS 232 C Check lines: Cts Velocity: 9600, 4800, 2400, 1200. 600, 300 baud/sec. Parity: even, odd, none Isolation: 1500 V

Clock Clock: Gregorian Back-up: by means of lithium battery Battery life: 1 year in case of power supply absence. Precision: 1 second/month

Analogical output Output: 4-20 mA isolated proportional to 100% of range on maximum load of 500 Ω Total Range (over range): 3.6 - 24 mA Resolution: 1/3800 Isolation: 1500 V Uploading time: 1 second

Message printing Periodical printing: programmable in hours, minutes Alarm printing: automatic printing Message printing: year, month, day, hour, minutes, % (Ch1), temperature (Ch2, Ch3), alarm 1 status, alarm 2 status

Ranges of variables Read out in engineering units, according to the customer specification.

Ambient requirements Working temperature: 0 ÷ 50 °C Storage temperature: -10 ÷ +75°C Humidity: 10 ÷ 90% without condense Power Supply: 220/110 Vca; 50/60 Hz; 5 VA

Physical specification Dimensions: 96 x 96 x 185 mm. Weight: about 0,5 Kg. Mounting: on front panel

Technical Specification

M702 in explosion proof housing Protection mode: II 2 GD EEx d −IIC T6 IP65 T85°C Tamb -20 ÷ +60°C for classified area ZONE 1 / ZONE 21

For wall or panel mounting Dimensions: 240 x 240 x 300 mm Function buttons outside the box Equipped with 3 Gk 3/4” holes

A51594

Description Powerful microprocessor-based system (keyboard configurable) allowing selection of range, type of alarms, set point and it can receive 3 analogical input signals (2 of them can be used for cross sensitivity compensation or special functions. On request, a system to perform zero and/or full scale autocalibration can be provided. Optional RS232C output can directly drive a printer with selectable timing and baud rate. Isolated current output is standard. The unit can be housed in a compact Noryl DIN case for panel mounting (standard), in a IP 65 case with clear front door for wall mounting or in explosion proof housing for mounting in classified area.

ds 8869 / REV 5 ATEX -4- 09/07/07

Inlet / outlet ports for sample gas

Rugged standard purpose water and dust proof cast aluminum housing

Cell assembly

Electronic assembly

Stainless steel handle

Rugged threaded cap

Detector assembly

Infra red source

A51035

Analytical Process Instrumentation

ADEV srl

Suffix A - Line Voltage 0 24 Vdc 2 230 V 50/60 Hz 4 115 V 50/60 Hz

Suffix B - Stream Composition 1 CO2 in furnace atmosphere with background gas up to 20% CO,

10% CH4, balance N2, saturated at 0°C. 2 CO in atmosphere with background gas consisting of H2, O2,

CO2, H2O vapour, CH4, balance N2 3 CH4 specify background composition. 4 SO2 specify background composition. 5 H2O specify background composition. 6 C2H4 specify background composition. 7 Special range (solvents, N2O, hydrocarbons, others)

Suffisso C - Campi. Minimum range depending on gas and stream composition. Contact for details.

500 0-500 ppm (*) 100 0-1000 ppm (*) 005 0-0,5% 010 0-1,0% 015 0-1,5% 025 0-2,5%

Suffix D - Alarms D1 - Alarm threshold D2 — Wrong calibration and fault alarms 0 None 0 None 1 1 low alarm 1 Wrong calibration alarm shared with 2 1 high alarm an alarm threshold 3 1 high + 1 low 2 Fault alarm shared with an alarm 4 2 low alarms threshold 5 2 high alarms 3 Wrong calibration alarm on relay 9 On specification 4 Fault alarm on separated relay 5 Wrong calibration alarm shared with Fault alarm 9 On specification

Suffix E – Alarm contacts 0 No alarm contact 1 Normally closed when in alarm 2 Normally opened when in alarm

Suffix F - RS 232 C output + internal clock 0 NO 1 YES

Suffix G - Sensing unit 1 Standard housing 2 Explosion proof housing

Suffix H - Autocalibration 0 NO 1 Autocalibration 2 Autocalibration + autocalibration start inlet free contact 3 Autocalibration + autocalibration start inlet free contact

with calibration in progress free contact

Suffix I - Control unit 00 Without control unit and without power supply 01 M702 standard 02 M702 + IP65 housing 03 M702 + explosion proof housing 04 EC2001 (in alternative to M702) 05 EC2001 (in alternative to M702) + IP65 housing 06 EC2001 (in alternative to M702) + explosion proof housing 07 7876 (in alternative to M702) 08 7876 (in alternative to M702) + explosion proof housing 99 On specification

Suffix T– Troubleshooting meter 00 None 01 Troubleshooting in standard housing 02 Troubleshooting in explosion proof housing

(*) range not available for CO analysis

050 0-5% 615 0-6% to 0-15% 163 0-16% to 0-30% 311 0-31% to 0-100% 992 Double range 999 On specification

Ordering A C B D1 E F G H

I

T

8869 D2