Continuous Monitors for Total VOCs,

Total Hydrocarbons, Solvents- (PID/FID)

& H2S,SO2, Cl2, CS2,..(NDUV-NDNIR)

Model 201B Rackmount Model 201B Wallmount

Environmental & Process Measurement in Chemical, Petrochemical, & Manufacturing PlantsFor Stacks, Process, Carbon Bed Breakthrough, Drying Ovens, Leak Detection

MODEL 201B CONTINUOUS GAS ANALYZER

IntroductionThe Model 201-B PID is a flexible andversatile Analyzer. More than three thousandof these photoionization detector (PID) basedAnalyzers have been sold worldwide forapplications ranging from carbon bedbreakthrough, leak detection to stack andambient air monitoring. This is attributed tothe rugged and durable design that ischaracteristic of all PID Analyzers products.

Several years ago, we added the flameionization detector (FID) to the 201 seriesproduct line. Other continuous Analyzersin the 200 series include the Model 202Infrared (IR),the Model 201B fixedwavelength UV-Near IR Photometer, athermal conductivity detector (TCD), Model204 and a Model 210 ParamagneticOxygen Analyzer. The addition of these newAnalyzers greatly improves the capabilityand range of process analyzers from PID.

PID-descriptionThe process of photoionization is initiatedby the absorp-tion of a photon of ultravioletradiation energetic enough to ionize amolecule (RH) by the process shown below:

RH + hυ ⇒ RH+ + e-where hυ represents a photon with anenergy ≥ the ionization potential of speciesRH. The ions are collected in an ionizationchamber which is adjacent to the lamp andcontains an accelerating electrode (biasedpositively) and a collection electrode wherethe current is measured. After amplification,the current measured is proportional toconcentration. The response measured willbe a summation (total) of the hydrocarbonsionized.

FID DescriptionIn the FID, the sample is burned in ahydrogen-air flame and the ions formed fromcarbon containing compounds are collectedby applying a positive potential to the jet andmeasuring the current at collection electrodejust above the flame. After amplification, thecurrent measured is proportional to concentration.

Applications: PID or FIDMonitoring effluents from chemical,

refining, or manufacturingCarbon bed breakthroughLeak detection- from processequipmentNon methane Hydrocarbons in Ambient or Stack-FID/CatalystDrying ovens for removing solventsΙncinerationTHC in ambient or plantppb levels of VOCs- PID onlyRemediation site monitoringIntake air in chemical ormanufacturing plants- used tocontrol recirculation of airVOC’s in water with optionalSparging system (Model 650) forTotal VOCs in water at ppm-ppb levels

Features-

Automatic Restart- In the event of a poweroutage, the instrument willautomatically restart

Low cost of ownership- The long lifetimeof the analyzer coupled with the minimallevel of maintenance results in a low costof ownership

Wide operating range with no rangechanging necessary- 16 Bit ADC

Push button Automatic calibration;automatically adjusts response

Autozero for PID; Automatically injectszero gas & adjusts auto zero for FID

PID- lamp out alarm; FID-flame out-shuts off hydrogen and providesalarm

RS232 digital output; 0-1 VDC analogoutput

Up to 6 dual setpoints that areprogrammable- can be used to shut downa process, remotely dial a number...

SpecificationsDetectors available: PID & FID

Measurement mode: Continuous

Zero drift- Automaticcompensation; <1% per month

Span drift- Auto cal each 24 hours(with contact closure), may requiremanual set of span: less than 1%every 24 hours

Wide range of response- from subppm on PID to % on the FID

Support gases: PID requires nosupport gases; FID requires H2 andzero air

Readout- 51/2 digit bright red LEDsmart panel meter

Standard output: 1 VDC, RS232

Enclosure:Rack (NEMA 2)-

Rack: 19" W x 51/4"H x 14"D

Weight: 12.2 pounds PID

14 pounds FID

Wall (NEMA 4)

23"W x 21"H x 10"D- PID

27"W x 21"H x 10"D- FID

Weight: -19 pounds PID

- 22 pounds FIDPower requirements- 100-240VAC,1 amp

PID and FID Range

PID range - 0.1 to 3,000 ppm (higher levelscan be detected via a dilution system

hydrocarbons > C4 plus, VOC’s, inorganicspecies such as H2S, NH3, I2, PH3, AsH3, etc.

FID Range- 1- 200,000 ppm

VOC’s (hydrocarbons) only

Options4-20 mA output; RS485 output,

MODBUS,

Dual setpoints- Customer Programmable

Data acquisition and storage usingDataWorks software- runs underWindows or Windows NT on aPentium PC

2 point, Separate Display of EachSample Point- ideal for inlet/outletmeasurements

4, 8, 16, 32 point sequencer (withcontact closure to indicate point beingsampled), Three line display- Display ofConcentration, Sampling Point & SampleFlow (measured by mass flowmeter)

X or Z purged for Zone 1 and Zone 2respectively

Sampling SystemsOne of the most difficult challenges is todeliver a sample stream saturated with waterat an elevated temperature to the analyzerwithout any change in the composition ofthe VOC’s or other compounds to bemeasured. A photo of our sampleconditioning system is shown below. Foradditional information, please contact PIDAnalyzers.The system below requires only compressedair for operation and removes all liquid waterfrom the sample. It can be used in a Class IDiv 1 area.We also offer heat exchangersand heated sample lines for other types ofsamples.

IntroductionThe Model 201 B UV-NIRAbsorbance Analyzer is a flexibleand versatile non dispersive (ND)Spectroscopic Analyzer. The designis based on ultra stable lamps withsingle or dual beam optical benches,a detachable sample cell, aphotodiode detector and very stableelectronics. This Analyzer has a widedynamic range (from ppb to > percentlevels). This rugged and durabledesign is characteristic of all PIDAnalyzers products.

Principle of Operation

The technique for measuring theconcentration depends upon theLambert Beer Law:

I = Io e-kx

Where- I is the measuredintensity, Io is the incident intensity, k isthe absorption coefficient, and x is thepathlength

The instrument consists of a UVsource, a fixed path length cell (can bevaried for the application), aninterference filter and an UV detector. This instrument operates in the nearUV to near IR region (200-1,500 nm).The types of electronic transitions inthis region are electronic and fororganic molecules involve sigmaelectrons (unsaturated compounds).The types of electrons are found inC=C (PI-PI* transitions ) or C=O (N-PI* transitions) in organic compounds.

Features-The LED meter displays threeparameters (concentration (ppb/ppm/%) , temperature, and pressure) andwill provide an output for a singleparameter.

Easy to operate- In the eventof a power outage, theinstrument willautomatically restart

Wide operating range withno range changingnecessary- 16 Bit ADC

Push button Automaticc a l i b r a t i o n ;automatically adjustsresponse

No span or zero pots; allcalibration data storedin RAM

Automatic calibration forAbsorbance

Can be setup to run withouta cal gas standard via anabsorbance standard

UV/Visible/Near IR lamp outalarm

Temperature & Pressurecorrection

Digital Outputs: Standard- RS232 Optional-

RS485, Device NetAnalog Outputs:Standard-0-1 VDC analog

output; Optional- 4-20mA

NH3, Hg, Ozone, H2S, SO2, Mercaptans, CS2, Cl2, Br2, I2,Aromatics, Aldehydes, Ketones in air, water & process streams

UV-NIR ABSORBANCE DETECTORS

Specifications

Detectors available: UV-NIR lamps anddetectors from 200-1200 nm

Measurement mode: Continuous

Zero drift- < 0.1%/day

Span drift- < 0.1% FS per week

Readout- 5 digit LED smart panel meterwith 32 bit arithmetric calculationcapability

Displays- Concentration, T/0C, and P/atm

Response time- 20 sec.

Flow rate- 0.5-1.5 LPM

Operating temperature-15-300 C

Standard output: 1 VDC, RS232 (printwith a serial printer or print to a PC inhyperterminal)

Programmable Voltage Output-Analogoutputs (0-1VDC or 4-20 mA) can beprogrammed from the front panel

Enclosure:Rack (NEMA 2)- 19" W x 51/4"Hx 14"D; Weight: 12.2 pounds

Power requirements- 100-240VAC, 1.5amps

Range- Depends of application

Linearity- 1%

UV to NIR ApplicationsThe Analyzer can be configured for theUV with a mercury lamp with/withoutinterference filters, a cold cathodeelemental lamp or a deuterium lampwith interferences filters, and/or atungsten lamp for visible-NIR with inter-ference filters. Using various combina-tions of lamps/filters and detectors, anumber of different applications areavailable including the following:

ApplicationsAir Aromatics, Amines, Aldehydes,

Alcohols and Ketones in stackgases

NH3, Cl2, NO, NO2, H2S, SO2, Hg instack gases or process streams

Process Solvent purity Lower explosive limitWater Aromatics, Amines, Aldehydes,

Alcohols and Ketones in water Chlorine dioxide, or nitrate, and otherions in water Metal ion chelates in water

Additional Enclosures:

The UV analyzers are available in a stan-dard 19” rack mount enclosure or aNEMA 4 wall mount enclosure. The lattercan be X or Z purged to meet Class 1Div.1 or 2 electrical requirements.

NDUV-NDIR ANALYZERS

DataWorks

Data Works is PIDs data collection and loggingsoftware that can be used with a wide variety ofSensor or Analyzer outputs such as Ethernet,RS485 & 4-20 mA . The latter two outputs are forlong distance transmission of data as shown inTable I below. In-plant installations are typically 4-20 mA or RS485 because of the long distancesinvolved 1,000-5,000’.

The software is written in visual C++ as an overlay/interface for various hardwaredevices. One hardwareversion used for our Model 201-B, 202, 203, 204,210, 301B GC, 501 B GC or other manufacturer’sinstruments that have 4-20 mA outputs or an RS485output. There is a 12 bit ADC on board with 16digital input/outputs. The latter can be used tocontrol calibration,diagnostics for the PID Analyzersunits. Low and high alarm levels and concentrationrange can be set in the PC.

Each day at midnight, a new CSV or textfile is created and named (by date). Thesefiles can be directly imported into EXCEL.The 4-20 mA output from multiple PID Analyzersinstrumentscan be networked as shown below.

Multipoint Sequencer

The 201-B has several mulipoint options The firstis a simple 2 point system that can be used tomonitor the input and output of a scrubber, car-bon bed etc. to determine the efficiency of thesystem. This 201-B has a two channel display;one for each channel.

The second option is a 4, 8, 12, 16, 24 or 32point system. This system employs a manifoldwith a needle valve and a 3 way valve for eachchannel. This version has a three channel dis-play. One channel is for for the concentration,the second is for the channel # and the third isfor the sampe flow for that channel. The flow ismeasured with a mass flow sensor. The setpointfor the flow channel can be set to indicate a lowflow or blockage for a channel. An alarm can beprogrammed for each channel in the system. thissystem provides an inexpensive alternative to asensor for each point. The cost of maintainingand/or calibrating this single system is consid-erably less expensive than maintaining a 16 or24 sensor system.

The multipoint system can be interfaced withDataWorks, a PLC or DCS system that is al-ready at the Plant. Contact PID for additionalinformation on in this area.

A three channel display for the multipoint isshown below:

PID ANALYZERS, LLC780 Corporate Park Dr. Pembroke, MA 02359

Tel. 1-781-709-2131 USA or Canada 1-800-PID-6826 Fax. 1-781-709-2050 Web: http://www.hnu.com E-mail: sales@hnu.comPID Analyzers, UK, 9 Pennington Close, Frodsham Cheshire WA6 7NL Tel/Fax 01928-732-395

Web: http://www.pidanalyzers.co.uk E-mail: sales@pidanalyzers.co.ukHNU Nordion, Ltd, OY, Atomitie 5 A 3, PL 1, Helsinki, Finland Tel. +358-9-565 7240 Fax +350-9-562 6801

Web: http://www.hnunordion.fi E-mail: Info@hnunordion.fi