Document mbjBjwwRKXK51wVwD8pMJBqpO

H N U System s, Inc. 30 0ipee Road Newton Upper Falls, Ma*sachu*em 02164 EXHIBIT B SL 090358 Wrv*> \poovs:r: <=o class'' D'vT^groo'^ a b c & o hazardous^ locations M IH tJ H M IM W li principle oi operation IT 'hoto-ionizer is a trace gas ana lyzer u. j to measure the concentration of a wide variety of species in industrial atmospheres The analyzer employs the principle of phoioiomzntion for detection The process is termed photoiomzation since the absorption ot ultraviolet light by a molecule leads to ionization via: R + ht- - R* + e' where R* is the ionized species and hv represents a photon which has an energy a the ionization potential of the species. The sensor consists of a sealed ultra violet light source that emits photons which are energetic enough to ionize many trace species (particularly organics) but do not iom ie major components of air such as Oj,. ..CO.COj.orHjO. A chamber adja cent to the ultraviolet source contains a pair of electrodes When a positive poten tial is applied to one electrode the field created drives any ions formed by the absorption of UV light to the collector electrode where the current (proportional to the concentration) is measured. Typical calibration curves showing the relative response of toluene and methyl ethyl ke tone (at the same gain setting) are shown below Information on the relative response factors for other species is available upon request. BUSINESS REPLY CARD FIRST CLASS PERM* l NO 40535 *CWTON UPPER FALLS, MA POSTAGE WILL BE "w SL 090359 hnu systems 30 ossipee rd. newton, ma 02164 NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES th photo-i niz r accurate measurements, easily obtained sensitivity A maximum sensi tivity ot 0-2 ppm. lull scale, can bo obtained for many species. This scale is readable to 1 % (100 division scale). limits of detection Typical limits ol detection are 0 1 ppm In many cases those lower limits represent a 10-100 fold improve ment over conventional portable analyzers operating range The linear range lor most compounds is from 0 1 ppm lo 600 ppm while the useful range typi cally extends to 2000 ppm. stability Zero drift is extremely low, normally 1% or less over 10 hours, on battery operation On AC operation, zero drift is less than 1% over 24 hours Semiweekly span calibrations (100 ppm toluene) over a one month period give a relative standard deviation ol +4.5%. This long term stability ot both zero and span is due to the solid state electronics and stable ultraviolet light source. specificity Specificity in photoionizalion analysis depends on the sensitivity of the detector to the species being measured, the number of interfering species present, and the concentration of the species being measured relative to interierences. The optimum specificity can be obtained by choosing the light source (9.5 eV, 10.2 eV, 11.7 eV) to suit the application, maximizing sensitivity to the species being analyzed and minimizing any possible interference. Return the postcard lor details on your application. rapid response Response to changes in con centration is extremely rapid. A 90% of full scale change (0-2000 ppm) takes less than five seconds In addition, the sensor is located at the sampling point rather than inside the instrument. This eliminates the problems of hydrocarbon adsorption and transit time through a sampling tube, all of which can delay the real time response by 30-45 seconds or more. AC/DC operation-The instrument power is sup plied from a 12 VDC rechargeable battery which gives a minimum of 10 operating hours before recharging is necessary The AC recharger pro vides the option ol operating the unit continuously Irom 110V AC so that the instrument can be used either as a portable unit for industrial hygiene sur veys and leak detection work or as a continuous stationary monitor. An optional HNU Recorder can also be operated with the 101 battery. The instrument is equipped with an automatic solid state battery protection circuit to prolong battery life by preventing deep discharging Both the analyzer and the recorder can be operated during the recharge cycle portability The instrument is truly portable, with a total weight ol less than 9 pounds (4 1 Kg) com plete. No additional bulky power packs, sample pumps or cylinders ol fuel gas or zero gas are needed. When not in use, the hand-held sensor is stored in the instrument cover and the total p;ickuyu measure:, 21 cm wide x 13 cm deep x 24 cm high SL 090360 direct reading Concunlrahon (ppm) is read out directly on an easy to read 4.5" (11.3 cm) linear scale three simple operating controls Function and Range Switch This switch puts the instrument into the STANDBY. BATTERY CHECK. MEASUREMENT modes or OFF position. The MEASUREMENT position allows the choice of a 0-2 ppm, 0-20 ppm. 0-200 ppm or 0-2000 ppm lull scale range The STANDBY mode reduces power consumption between measurements The BATTERY CHECK allows a manual power check before use while an LED (red indicator light) adjacent to the function switch provides an auto matic battery check indicator during operation Zero Adjust The zero control allows electronic calibration ol the instrument at the zero concentra tion point without requiring the use of a zero gas. Span To calibrate the instrument for a particular gas. this control is adjusted to the gain setting which will match the value of a calibration gas to that same read ing on the instrument scale. This control also provides the 10 fold increase in gain that allows the 0-2 ppm lull scale range. recorder outputs A signal output ol 0--5V full scale is provided on the front panel for the attachment of a strip chart re corder. el ctronic zero Zero calibration is done com pletely electronically. The instrument is switched to the STANDBY mode where the UV light source is turned off but the other electronics remain on. The zero control is adjusted until the meter indi cation is zero No zero gas or regulators are needed; no further adjustments are required. Verification tests for this technique against hydrocarbon-lree zero gas show perfect agreement safety The photo-ionizer is extremely safe to use, requiring no flames, igniters, Or hydrogen fuel. It is approved by FM to meet the safety requirements ol Class 1, Division 2 of the National Electrical Code. instant warmup Solid state electronics produce stable readings within 20 seconds after turning the instrument on. select dlitt * ftp ci sd tec_d NR: no response H high response L low response dess species photolonization response 95eV 102eV H7eV lamp lamp lamp paraffins and unsaturated hydrocarbons methane NR NR ethylene NR L acetylene NR NR l-butene HH hexane NR L NR H H H H chlorinated hydrocarbons methyl chloride carbon tetrachloride Chloroform dichloroethane vinylidene chloride vinyl chloride trichloroethylene NR NR NR NR L L H NR NR NR NR H H H H H H H H H H heterocyclics & aromatics phenol H pyridine H benzene H toluene H xylene H styrene H aniline H chlorobenzene H nitrobenzene NR H H H H H H H H L H H H H H H H H H nitrogen compounds formamide ammonia hydrazine methyl amine acetonitrile acrylonitrile sulfur compounds sulfur dioxide hydrogen sulfide carbonyl sulfide carbon disulfide methyl mercaptan dimethyl sulfide dimethyl disulfide NR NR H H NR NR NR NR NR H H H H H L H H NR NR NR H NR H H H H H H H H NR H NR H H H H H H aldehydes, ketones, alcohols, acids, esters formaldehyde NR NR acetaldehyde NR H propionaldehyde L H acrolein LH crotonaldehyde LH acetone LH methanol NR NR ethanol NR L formic acid NR NR acetic acid NR L methyl methacrylate L H H H H H H H H H H H H others ethylene dibromide NR H ethylene oxide NR L tetraethyl lead HH phosphine NR H arsine NR H iodine HH H H H H H H SI ft. SL 090361 H N U Systems, Inc. 30 Ossipet Road Newton Upper Falls, Massachusetts chem ical in s tru m02164 pacifications periomance (benzene referred) reno*0.lto2000ppm detection limit 0.1 ppm eeneitivity (max) 0-2 ppm FSD wer 1 Itlon rrtttvr scale _ repeatability 1 % of FSD M linear range 0.1 to 600 ppm $ 3T useful range 0.1 to 2000 ppm I reaponse time <5 sec to 90% of full - -f physical Size: probe 6.3 DlAx 28.51 (cm) ---1-1--V- .")#.; readout 21Wx 130 x 16.5H (cm) :(8V2> x 6'A*) towed 21Wx 130x24H (cm) j(8Wx5ux9'AO , - cable 80 cm long (32*) ` ^weight probe .55kg (20 ounces) . readout 32kg (7 pounds', total (shipping) 5.4 kg (12 ^controls and functione: "t mode switch Off. Battery___ k 0-200,0-20 ppm V*>U;r flow battery indicator lights ^ Jzero (10 turn 300% FSD max)^,,s k epen.OOtum counting dlal.l.OtCj-10 Js-.- sensitivity) . readouts* (11.3 cm) meterTaGt " ra* graduated 0-5-10-15-20, dMs ^`outputs recorder 0-100 MV FSQai f power requirements of operating tbn T& continuous use with battery >10 hou with HNU Recorder > 6 hours Jri~ recharge time, max <14 hours, 3 fioui m charge.*, . 'rechargecurrent,max.4amps __ ^ t Of full Lconstruction Designed towithstanam^shRJtcarofiabuse , 1- to which portable instruments are oftehteobjected.^i f ^ The readout is housed in a two piece alunjlnum case, ;jrand finished with a solvent resistant bMied acrylic.: ' textured paint ; -->r: f^^The probe is fabricated from. Tsections and machined plastl ervtcMbflNyThe protitfvrcl'r ^design,allowing rapid serVIc ... (mechanical and eiectficaljcom Slntorwfrlrg includes qutckdlad ^maintenance The inshumw^con part and consumes no gases ' rv routine maintenance procadi source window every several L >.?.'. - ^^4* ^ripnsMitedby^ ">-r* r. ( P ^IOCJlL HEPRJ5S; 'hito systems^ ^ ^;,'(713) 525-199! . "I J , IrV'r! I * Industrial hygiene surveys of toxic gases for OSHA> (TLV) compliance can be rapidly accomplished jL'Mb with this portable, direct reading instrument Hood?; ventilation rates can also be measured accurately *1T because of the sensitivity and wide operating rang#^ leak^datsctlon^^^l^iby^^1apld *1?_______ response and extrema sensitivity,This enables the; user to locate even small leaksvery rapidly^;#*11 residual solvent vapors such as trichlorosthylsnai in^decaffelnated coffee or degreasing operations!'u hejumfrom 8oybpai\extraction and otheryapor3 fronffood^chsmlCal processing, paint eprayfa otjcaartlpfrcan befeasilyend rapidly measijjedj ;30jPMipee Rc "VNewtomUpper TMaaaachuaet Telff6ir^64.TWXjfrlO,335-76 vie; Boccaccio,**5 201231Milano, It vTalf(02) 87 11;O(M0'0efei*ra^ v:> S^;343435EXECMIl!;: t \m wr -. ^. : DATE | TIME : ; ; : VCM EMISSION CONTROL LEAK REPORT VCM LOADING RACK PLANT B SHIPPING LOCATION OF LEAK CAUSE OF LEAK HNU READING CORRECTIVE ACTION TAKEN : I ro kO rn o CTi o U1