Signet 3719 User manual

Signet 3719 pH/ORP Wet-Tap
• Donotexceedmaximumtemperature/pressurespecications.
• Wearsafetygogglesorfaceshieldduringinstallation/service.
• Donotattempttodisassembletheretractionhousingandthe
electrodepiston.
• Donotalterproductconstruction.
• Failuretofollowsafetyinstructionsmayresultinsevere
personalinjury.
• Retractelectrodebeforeanypipecleaningoperation.
1. Description
TheSignet3719pH/ORPWet-TapallowsinstallationandremovalofpHorORPelectrodeswithouttheneedforprocessshutdown
duringroutineelectrodemaintenanceandcalibration.ProcessisolationisachievedwithadoubleO-ringsealonauniqueand
compactretractionassembly;noseparatevalveisrequired.Acam-activatedautomaticlockingmechanism,SafeLoc™,andtheshort
strokedesignhelptoassureoperatorsafety.
 1. Description
 2. Specications
 3. Dimensions
 4. 3719SystemOverview
 5. Installation
 6. Maintenance&Cleaning
 7. Troubleshooting
 8. OrderingInformation
*3-3719.090*
3-3719.090  RevH09/07 English
English
Process temperature and pressure specications:
• 3719Wet-tapandelectrodeinstalledwith:
 8in.PPsaddle: Maximum5bar@20°C
   (Maximum72.5psi@68°F)
 6in.PPsaddle: Maximum6bar@20°C
   (Maximum87psi@68°F)
 AllotherPPsaddles: Maximum7bar@20°C
   (Maximum102psi@68°F)
 Themaximumpressureisderatedbytemperatureupto
40°C.Seegraphbelow
General
• Compatiblesensors:
 2716-WTTwist-LockpHElectrode
 2717-WTTwist-LockORPElectrode
 2756-WTDryLoc™pHElectrode
 2756-WT-1DryLoc™pHElectrode
 2756-WTPDrylocplasticpHelectrode
 2756-WTP-1DryLocplasticpHelectrode  
 2757-WTDryLocORPElectrode
 2757-WTPDryLocplasticORPelectrode
• ShippingWeight:
 Wet-tapassembly: 1.2kg(2.7lbs.)
 Electrode:  0.13kg(0.3lb)
• ProcessConnection: 3-3719-11:1½in.NPT
  3-3719-21:2in.NPT
  3-3719-12:ISO7/1-R1½
  3-3719-22:ISO7/1-R2
Performance
• MaximumFlowVelocity:10ft/s
• Efciency:  >97%@25°C(77°F)
• ResponseTime: pH:<5sfor95%ofsignalchange
   ORP:Applicationdependent
• Drift:  <2mVperweek
• OperatingRange: pH:0to14pH
   ORP:-2000to+2000mV
• Accuracy:  ±0.1%overfullrange
• ReferenceJunctions: PorousPTFE
• Electrolyte:  3.5MKCl
• Elements:  Ag/AgCl
• Temp.Sensor(pH): 3KBalco(3-2716-WT)
   PT-1000(3-2756-WT,-WTP-X)
• Temp.responsetime(τ):438s
• SodiumIonError: <0.05pHin0.1molar  
  Na+ionat12.8pH
• Impedance(pH): <150MΩ@25°C
2. Specications
Storage temperature:
• Wet-tapassembly: -15to120°C(5to248°F)
• Electrode:  0°to85°C(32°to185°F)
°C-10 0
°F
10 20 30 40°C 50 60 70 80
14.5
29
45
58
72.5
87
102
11 6
psi
2
1
3
5
7
3214 50 68
4
6
8
bar
122 158176140104°F68
6 in. PP Saddle
2½, 3, 4, 10 & 12 in. PP Saddles
8 in. PP Saddle
Custom
fittings required
to operate in
this range!
Consult Factory
Wetted materials
• RetractionHousing: CPVC
• O-rings:  FPM
• SaddleGasket: FPM
• Saddlebody: PolypropyleneGrade8
   ASTMD2565,1-8,UVstabilized
• ElectrodeBody: GlassORPlastic
• Electrodejunctions: PorousPTFE
• Electrodesensingsurface:
   GlassMembrane(pH)
   Platinum(ORP)
• ElectrodeO-rings: FPM
WARNING!
Ifusedinconditionsthatexceedrecommended
pressureratings,thisproductcanposeaserious
hazard.
Weurgecustomerstoreadthespecications
carefullybeforeinstallingandoperatingthis
product.
Improperusecancausecomponentsandprocess
liquidstobeexpelledathighspeedsandcause
seriouspersonalinjury.
Other Materials
• LockingShroud: PVC
• Hardware:  316SS
• SaddleHardware: 316SS,430SS(reinforce.ring)

2 Signet3719pH/ORPWet-Tap
76 mm
(3.0 in.)
130 mm
(5.13 in.)
49 mm
(1.94 in.)
45 mm
(1.75 in.)
39 mm
(1.52 in.)
20 mm
(0.8 in.)
75 mm
(2.94 in.)
Pipe thread
1
1
/ 2 in. NPT
or
ISO 7-R1
1
/ 2
76 mm
(3.0 in.)
39 mm
(1.52 in.)
20 mm
(0.8 in.)
Pipe thread
2 in. NPT
or
ISO 7-R2
34 mm
(1.32 in.)
41 mm
(1.62 in.)
25 mm
(1.00 in.)
Saddle length
Saddle height
Outlet
height
Nominal
Pipe ID
Flange width
Description Nominal
Order No. (ASTM, NPT) Pipe OD Flange Width Saddle Length Saddle Height Outlet Height
2007-0225 Saddle,21/2in.x11/2in. 2.875in. 4.84in. 3.11in. 4.29in. 0.83in.
2007-0230 Saddle,3in.x11/2in. 3.500in. 5.43in. 3.43in. 4.84in. 0.83in.
2007-0240 Saddle,4in.x11/2in. 4.500in. 5.98in. 3.90in. 5.90in. 0.91in.
2007-0260 Saddle,6in.x2in. 6.625in. 8.90in. 4.49in. 8.46in. 1.50in.
2007-0280 Saddle,8in.x2in. 8.625in. 11.3in. 5.71in. 11.3in. 1.50in.
2007-0210 Saddle,10in.x2in. 10.75in. 12.5in. 7.04in. 13.25in. 1.25in.
2007-0212 Saddle,12in.x2in. 12.75in. 16.0in. 9.68in. 14.00in. 1.20in.
.
3. Dimensions
3719-1 Wet-tap
11/2 in.outlet
for21/2 to4in.
saddles
3719-2 Wet-tap
2in.outletfor
6to12in.
saddles
CAUTION!
Whenusingtheseclamp-onsaddlettings,thesystemtemperatureandpressureislimitedbythesaddlespecications.
Theprocesstemperatureislimitedto40°C(104°F)maximumwhenusingthesesaddles.
°C-10 0
°F
10 20 30 40°C 50
14.5
29
45
58
72.5
87
102
11 6
psi
2
1
3
5
7
3214 50 68
4
6
8
bar
122104°F68
6 in. PP Saddle
2½, 3, 4, 10 & 12 in. PP Saddles
8 in. PP Saddle
218 mm
(8.57 in.)
2716-WT pH Electrode
2717-WT ORP Electrode
2756-WT(-1) pH Electrode
2756-WTP(-1) plastic pH Electrode
2757-WT ORP Electrode
2757-WTP plastic ORP Electrode
35 mm
(1.4 in.)
30.5 mm
(1.2 in.)
12 mm
(0.47 in.)

3Signet3719pH/ORPWet-Tap
5. Installation
5.1 Notes on Location, Orientation and Required Clearance
• The3719-1isdesignedforuseinpipesupto4in.
• The3719-2isdesignedforuseinpipesfrom6to12in.
• Selectalocationthatwillprovidesufcientclearanceto
removeandinserttheelectrode.
• The3719canbemountedinanyorientation,including
horizontalandinverted.
• Ifinverted,usecautionwhenremovingthesensor.
 Residualuidmaybepresentintheretractionhousing.
Keepelectrodeconnectorcleananddryatalltimes.
250 mm
(9.9 in.)
45 mm
(1.75 in.)
91 mm
(3.6 in.)
218 mm
(8.57 in.)
Any angle OK
4. 3719 System Overview
4.1 Twist-Lock Components
a
a
b
b
c
c
d
e
d
e
d
Signet pH/ORP
Transmitter
10.20 pH
25.0C
ENTER
a) 3719pH/ORPWet-Tap
b) LowProlePPClamp-onSaddleFitting(ASTMsizes2½to
12in.)
c) DryLoc™pHorORPElectrode(6versionsavailable;see
orderinginfomationonpage8.)
 ("DryLoc"referstotheelectrodeconnectorstyle)
d) 2750or2760DryLocpH/ORPPreamplier/Sensor
electronics
e) Outputsignaloptions:
  -S3L
  -4to20mA
Allofthesecomponents(itemsatod)aresoldseparately.
a) 3719pH/ORPWet-Tap
b) LowProlePPClamp-onSaddleFitting(ASTMsizes2.5to
12in.)
c) 2716-WTTwist-LockpHor2717Twist-LockORPElectrode
 (“Twist-Lock”referstotheelectrodeconnectorstyle)
d) 2720Twist-LockPreamplier
e) SignetpH/ORPInstrument
Allofthesecomponentsaresoldseparately.
4.2 DryLoc Components
• Provide20inches(minimum)clearancefromthetopofthe
pipeforelectroderemoval.
• Lowprolepolypropylenesaddlesavailablefrom2½to12
in.(ASTM).

4 Signet3719pH/ORPWet-Tap
Pullthelockingshroudstraightupuntil
bothO-ringsarefullyseatedinsidethe
retractionhousing.
Grasptheretractionhousingbelowthelocking
shroud;turnthelockingshroud1/4-turnclockwise.
12
The3719ispackagedwithnoelectrodeinstalled,andwiththeelectrodepistoninthefullyinsertedposition.
• Examinethefemalethreadsatthetopoftheelectrodepiston.Donotinstallelectrodeifthreadsaredamaged.
• ExaminethetwoO-ringsatthelowerendoftheassembly.DonotinstallifO-ringsaremissingorthereareany
signsofdamage.
• Thepipecanbepressurizedaftercompletionofstep4.
• DO NOT ATTEMPT TO REMOVE THE RETRACTION HOUSING FROM A PRESSURIZED PIPING SYSTEM!
5.4 Installation (Wet-Tap Into Fitting)
5.2 Installation in Pipe Sizes 2.5 to 12 Inches
• Cuta15/8to13/4inchholeinthepipe.
• Forreliablein-linemeasurementsofpHandORP,itis
imperativetopositiontheelectrodetipintotheprocess
stream.
• Becauseofitscompact“shortstroke”design,the3719
requireslow-prolettingstoassureproperpositioningin
pipesizes2.5to12inches.
• Utilization of the accessory saddle ttings, offered as
part of the 3719 system, is strongly recommended.
• Choosethe3719version(-11or-21)appropriatetothesize
ofthebranchconnectionoftherequiredtting:
 Use-11forsizes2.5to4in,and-21forsizes6to12in.
5.3 Installation in Pipe Sizes less than 2.5 Inches
• Itispossibletoinstallthe3719intopipesizesbelow
2.5inchesbycreatinga“owcell”withstandardpiping
components.
• Onesimplesolution,usingateettingandreducerbushings,
isshownintheexamplebelow.
3-3719-11
pH/ORP Wet-Tap
(Fully Inserted)
english
3-3719-11
pH/ORP Wet-Tap
(vollständig
eingeführt)
german
3-3719-11
Wet-Tap de pH/ORP
(completamente
insertado)
spanish
3-3719-11
Wet-Tap pH/ORP
(inséré á fond)
french
• Manysimilarcongurationsareconceivableinawide
varietyofmaterials,butbeverycarefultoverifydimensional
compatibility.
• Selectanappropriateinstallationorientationtoavoidthe
entrapmentofairinsidetheowcell.
• ContactyourlocalGeorgeFischerSalesandSupportofce
forassistance.
O-rings
LockingShroud
RetractionHousing
2 in. Te e
(S x S x S)
1½ in. NPT
Threads
Flush Style Reducer
Bushings (Spg x S)
2 in. x ½ in.
2 in. x ¾ in.
2 in. x 1 in.
2 in. x 1¼ in.
2 in. x 1½ in.
3-3719-11
pH/ORP Wet-Tap
Flush Style Reducer Bushing
(Spg x FT) 2 in. x 1½ in.
ENGLISH
Té 2 po
(S x S x S)
Filetage
1½ po NPT
Manchon réducteurs type
rinèage (Spg x S)
2 po x ½ po
2 po x ¾ po
2 po x 1 po
2 po x 1¼ po
2 po x 1½ po
3-3719-11
Wet-Tap pH/ORP
Manchon réducteur type
rinèage (Spg x FT)
2 po x 1½ po
FRENCH

5Signet3719pH/ORPWet-Tap
Turntheshroud1/4-turncounterclockwise
andliftitcompletelyawayfromthe
electrodepiston.
• ThreadtheWet-Tapintothepipetting.
• SmallerpipesmayrequirebracingtosupporttheWet-Tap
weightandthelongitudinalforcesrequiredforoperation.
• Useanappropriatethreadsealanttopreventleaks.
• Thepipingsystemcannowbesafelypressurized.
• Inspecttheinstallationforleaks.
34
Theelectrodepistonislockedinposition
bySSlockingpins.
DONOTtamperwiththelockingpins!
Ifthepistonisdepressedwithno
electrodeinstalled,thepipecontentsare
exposed.
ElectrodePiston
5.5 Electrode Installation
 1. Removethesafetyplugfromtopof
electrodepiston.Slideelectrodestraight
downintoelectrodepiston.Thread
electrodeintoplaceuntilconnector
shoulderisushwithtopofelectrode
piston.Handtightenonly.
 2. PlacetheLockingShroudoverelectrode;
turn¼-turnclockwisetounlockthepiston,
thenpressdownrmlyonthelocking
shroudtolowertheelectrodepistonintothe
pipe.
 3. Turntheshroud1/4-turncounterclockwiseto
lockthepiston.
 4. Installthematchingelectronicsassemblyor
preamplierontotheelectrodeconnector.
DO NOT ATTEMPT TO REMOVE THE
RETRACTION HOUSING FROM A
PRESSURIZED PIPING SYSTEM!
1
2
34
OR
OR
ENGLISH
1
2
34
OU
OU
FRENCH
1
2
34
O
O
SPANISH
1
2
34
ODER
ODER
GERMAN
2750
2720
2760

6 Signet3719pH/ORPWet-Tap
If the piston does not retract easily, or if any uid is observed leaking from the electrode
threads, the pipe must be drained before the 3719 can be safely removed.
• Stop the ow and depressurize the pipe.
• Remove the entire 3719 assembly from the pipe.
• Remove the electrode from the assembly
• Clean any scaling and debris found on or in the piston tip and surrounding area.
Cleaning
Cleaningtechniquesvarydependingonthetypeofcoatingpresentontheglasselectrodesurfaceorreferencejunction.
• Removesoftcoatingsbyvigorousstirring,orwithdirectedsprayofasuitabledetergentorsolventontotheglasselectrodesurface.
• Usechlorinebleachormilddetergenttoremovesoftcoatings.Rinseelectrodetipincleanwateraftercleaning.
• Usetheleastharshchemicalavailabletoremovehardcoatingswithoutattackingthematerialsofconstruction.
 (Forexample,removecalciumcarbonatewitha5%HCL(muriaticacid)solution.
• Removeoilyororganiccoatingswithdetergentsoranappropriatesolventthatdoesnotattackthematerialsofconstruction.
• ORPelectrodesurface(platinum)canbegentlysandedwith600gritwetanddrysiliconeorcarbidesandpaper,jewelersrouge,
crocuscloth,orverynesteelwool.
• Neverscrapeorsandtheglasselectrodesurface.
• Treatglasselectrodesurfaceswithappropriatecaretoavoidbreakage.
6. Electrode Maintenance and Cleaning
5.6 Electrode removal
TheelectrodeinanypHorORPsystem
requiresperiodicservice,calibrationor
replacement.Whenremovingtheelectrode
fromthewet-tapassembly,itisvery
importanttoexercisecautionandfollowthe
instructionscarefully.
1. Removethepreamplierfromthetop
ofthewet-tapassembly.
2. Turnthelockingshroud1/4-turn
clockwisetounlockthepiston.
3. Pulluponthelockingshroudtoretract
theelectrodepistonintothepipe.
DANGER!
Thepistonshouldretracteasilyfromapressurized
pipe.Ifthepistonoffersresistance,thereisadanger
thatthepistoniscoatedwithdepositsfromtheprocess.
STOP! DO NOT FORCE THE PISTON UP!
ItmaydamagetheO-ringsorbreakoffthepistontip.
Return the locking shroud to the LOCKED position
and follow the steps in the box below.
4. Turnthelockingshroud¼-turn
counterclockwiseandliftuptoremoveit
fromthewet-tapassembly.
5. Removetheelectrodebyturningitcounterclockwise.
  Forsafety,keepyourbodyclearofthetopofthewet-tapassemblywhileremovingtheelectrode.
DANGER!
Ifanyuidisobservedleakingfromtheelectrodethreads,STOP!DONOTREMOVETHEELECTRODE.Thereisadanger
thatthepistontiphasbeendamaged.
Tighten the electrode back down to reseal the assembly and follow the steps in the box below.
23 4 5
1
5
3

7Signet3719pH/ORPWet-Tap
Theoretical mV Values @ 25°C
pH mV
2 +296mV
3 +237mV
4 +177mV
5 +118mV
6 +59mV
7 0mV
8 -59mV
9 -118mV
10 -177mV
11 -237mV
12 -296mV
°C pH
234567891011 12
15 0.15 0.12 0.09 0.06 0.03 0 0.03 0.06 0.09 0.12 0.15
2500000000000
35 0.15 0.12 0.09 0.06 0.03 0 0.03 0.06 0.09 0.12 0.15
45 0.3 0.24 0.18 0.12 0.06 0 0.06 0.12 0.18 0.24 0.3
55 0.45 0.36 0.27 0.18 0.09 0 0.09 0.18 0.27 0.36 0.45
4 pH w/Quinhydrone 7 pH w/Quinhydrone
Temp: 20°C 25°C 30°C 20°C 25°C 30°C
ORP: 268mV 263mV 258mV 92mV 86mV 79mV
Slope in ORP electrodes
ORPslopeerrorsarecausedbycontaminationoftheplatinumelectrodesurface.Cleaningtheelectrodesurfacewillusuallyrestore
propervalues,responsetime,andstability.ManysystemsrequirebothpHandORPcalibration.Toconservecalibrationreference
solutions,usepH7and4buffersforpHcalibrationrst.ORPcalibrationcanbeperformedwiththesamebuffersafteradding
quinhydrone.
Slope in pH electrodes
ElectrodeslopeisthemVoutputperpHunit.At25°Cthetheoreticalslopeis59.16mVperpH.ThegraphbelowillustratespotentialpH
errorwhenatemperaturecompensatedinstrumentisnotused.
• Coatingsontheglassmayaffectsensorslopes.SeeMaintenanceandCleaningsection.
• Temperatureaffectselectrodeslope.Calibratetemperaturebeforecalibratingthestandardandslope.
Offset in pH Electrodes
Electrodeoffsetsoccurdueto:
• Cloggedreferencejunction
• Agedorcontaminatedreferencesolution/wire
• Aconstantoutputnear0mVinallbuffersolutionsindicatesashortedelectrodethatmust
bereplaced.
CheckoffsetsinapH7buffer@25°C.Thetheoreticaloutputis0mV.Anydeviationfrom0
mVisthepHelectrodeoffset.ThemVoffsetwilltrackacrosstheentirepHrange.Theslope
isusuallynotaffectedbyoffsetchanges.(i.e.,pH7=+10mV,pH4=+187mV);slope=59mV.
pHElectrodeOffsetpH7buffer@25°C
 Theoretical:  pH7.0(0.0mV)
 Newelectrode: pH7±0.25pH(±15mV)
 Reliable:  pH7±0.85pH(±50mV)
Electrodeoffsetsgreaterthan0.85pH(50mV)indicatetheelectroderequirescleaning
orreplacement.SeeMaintenanceandCleaningsection.
Offset in ORP Electrodes
• ORPelectrodeoffsetsareusuallycausedbycloggedreferencejunctionsorbyanagedorcontaminatedreferencesolution/wire.
• OffsetsshouldbecheckedinpH7buffersaturatedwithquinhydrone@25°C.Thetheoreticaloutputis+86mV.
 Anydeviationfrom+86mVistheORPelectrodeoffset(i.e.+90mV).
• QuinhydroneistheoxidizermeasuredbytheORPelectrodeandisrequiredforcalibration.
 TomeasureORPelectrodeoffset,saturate50mLofpH4andpH7bufferswith⅛gquinhydrone.
AnewORPelectrodemeasuresthesevalues±15mV.Theelectrodecontinuestobefunctionaluntiltheoffsetfromthesevalues
exceeds50mV.Electrodeswithoffsetgreaterthan50mVshouldbecleanedandreplacedifnecessary.
Response Time/Stability
Responsetimeandstabilityareaffectedbytheconditionoftheglasssurface(ORPelectrode-Platinumsurface),referencejunction,
andreferencesolution.Restorationtoacceptablelevelscanoftenbeaccomplishedbycleaningtheelectrode'sglasssurface(ORP
electrode-Platinumsurface)andreferencejunction.
7. Troubleshooting
pHandORPelectrodesaresimilartobatteries;theyagewithtimeandusage.
Thefollowinginformationwillhelpmaximizeelectrodelife:
• Hightemperaturesorconcentratedacids/causticswillaccelerateelectrodeaging.
• Neverstoretheelectrodetipindeionized(DI)water.
• Neverexposeelectrodetotemperaturesbelow-12°C(10°F)orallowittodehydrate.Theseconditionswilldamagetheelectrode.

8. Ordering Information
Mfr. Part No. Code Description
3-3719-11  159000804  pH/ORPWet-Tap,11/2in.NPT
3-3719-21  159000805  pH/ORPWet-Tap,2in.NPT
3-3719-12  159000806  pH/ORPWet-Tap,ISO7/1-R1.5
3-3719-22  159000807  Wet-TapAssembly,ISO7/1-R2
Parts and accessories
3-2716-WT  159000809  Electrode,pH,twist-lock,bulb,3KΩ,wet-tap
3-2717-WT  159000811  Electrode,ORP,twist-lock,bulb,10KΩID,wet-tap
3-2720   198864602  Twist-LockPreamplier,1/4in.NPT
3-2720-2  198864603  Twist-LockPreamplier,ISO7/1-R3/4
3-2756-WT  159000834  Electrode,pH,DryLoc,bulb,PT1000,wet-tap
3-2756-WT-1  159001383  Electrode,pH,DryLoc,bulb,3KΩ,wet-tap
3-2756-WTP  159001390  Electrode,pH,DryLoc,plasticbulb,PT1000,wet-tap
3-2756-WTP-1  159001384  Electrode,pH,DryLoc,plasticbulb,3KΩ,wet-tap
3-2757-WT  159000835  Electrode,ORP,DryLoc,bulb,10KΩID,wet-tap
3-2757-WTP  159001391  Electrode,ORP,DryLoc,plasticbulb,10KΩID,wet-tap
  
3-2750-1  159000744  In-lineDryLocpH/ORPSensorwithJ-Box
3-2750-2  159000745  In-lineDryLocpH/ORPSensorwithJ-BoxandEasyCal
3-2760-11  159001367  In-linePreamplierwith¾in.NPTthreadsand4.6m(15ft.)cable
3-2760-21  159001368  In-linePreamplierwith¾in.ISOthreadsand4.6m(15ft.)cable
3-2760-31  159001369  In-lineConnectorwith4.6m(15ft.)cableand¾in.NPTthreads
3-2760-41  159001370  In-lineConnectorwith4.6m(15ft.)cableandISO7/1R¾threads
2007-0225  159000812  PPClamp-onSaddle,2.5in.x11/2in.(ASTM,NPT)
2007-0230  159000813  PPClamp-onSaddle,3in.x11/2in.(ASTM,NPT
2007-0240  159000814  PPClamp-onSaddle,4in.x11/2in.(ASTM,NPT)
2007-0260  159000815  PPClamp-onSaddle,6in.x2in.(ASTM,NPT)
2007-0280  159000816  PPClamp-onSaddle,8in.x2in.(ASTM,NPT)
2007-0210  159000817  PPClamp-onSaddle,10in.x2in.(ASTM,NPT)
2007-0212  159000818  PPClamp-onSaddle,12in.x2in.(ASTM,NPT)
3-3719.390  159000855  3719LockingShroud
1220-0114  159000854  3719O-ring,FPM,PistonTip
Georg Fischer Signet LLC, 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. [phone] • Fax [phone]
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): [phone]
3-3719.090RevH09/07English ©GeorgeFischerSignet,Inc.2002 PrintedinU.S.A.onrecycledpaper
3-2716-WT pH electrode
3-2717-WT ORP electrode
3-2756-WT Dry-Loc pH electrode
3-2756-WT-1 Dry-Loc pH electrode
3-2756-WTP Dry-Loc pH electrode
3-2756-WTP-1 Dry-Loc pH electrode
3-2757-WT Dry-Loc pH electrode
3-2757-WTP Dry-Loc ORP electrode
1220-0114
O-rings
3-3719.390
Locking shroud