TOC-V SeriesTips & Tricks ...from experience !Main Topic:the Flowline

Needed AccessoriesTube Viton 5x2 x 30mm P/N: 631-41200-08 (Meterware)Tube Tylon 7x5mm x 1m P/N: 630-00315-05 (Meterware)Tube Teflon 6x4 x 50mm P/N: 016-37517 (Meterware)Flowmeter (optional) P/N: 630-08646-51For simple Troubleshooting:For extended Troubleshooting:nothing

Gas flow diagram TOC-VCXH Sparge LineNDIR-DetectorHalogen-ScrubberCarrier GasTC-PortIC-PortDehu-midifierPhosphoricAcidDrainVesselCooling LoopHumidifierCO2-Absorber8-Port-Valve5mL-SyringeASI-V0-Port12345678Sparge-GasDrainDilution WaterAcid(HCL)PumpBlank-CheckVessel~ 80mLFilterPressureRegulator

Gas flow diagram TOC-VCXH OverviewNDIR-DetectorHalogen-ScrubberCarrier GasTC-PortIC-PortDehu-midifierBlank-CheckVesselPhosphoricAcidDrainVesselHumidifier8-Port-Valve5mL-SyringeASI-V0-Port12345678Drain150mL150mLCooling LoopFilterCO2-AbsorberAcid(HCL)Dilution WaterPressureRegulatorPump

Gas flow diagram TOC-VCXH +TNM-1 OverviewNDIR-DetectorHalogen-ScrubberCarrier GasTC-PortIC-PortDehu-midifierBlank-CheckVesselPhosphoricAcidDrainVesselHumidifierNOX-Absorber8-Port-Valve5mL-SyringeASI-V0-Port12345678CLMDet.O3-Deact.DrainTNM-1cell space purgeto cell space purgeO3-Gen.150mL150mL500mL650mLCooling LoopFilterAcid(HCL)Dilution WaterPressureRegulatorPump

Gas flow diagram TOC-VCXH TroubleshootingNDIR-DetectorHalogen-ScrubberTrgergasTC-PortIC-PortDehu-midifierBlank-CheckDrainVesselBefeuchterDruckregler8-Port-Ventil5 mL-SpritzeASI-V0-Port12345678Observation:no PeaksBaseline (in test mode) much too highPeaks much too lowFlowmeter show normal flow rate

1. Step:Snap of/bent inlet(L) tube from CO2-AbsorberWatch Drain-Vessel (at the same time check water level)

Result:(a)Water level o.k., but no air bubbles to see big leakage in System

(b) Water level o.k., air bubbles to see possible little leakage in SystemPhosphoricAcidFilterCO2-Absorber

Gas flow diagram TOC-VCXH TroubleshootingNDIR-DetectorHalogen-ScrubberTrgergasTC-PortIC-PortDehu-midifierBlank-CheckDrainVesselBefeuchterDruckregler8-Port-Ventil5 mL-SpritzeASI-V0-Port12345678... localise big leakage

2. Step:Check gas flow in IC-Reaction chamber

Result:(a)No gas flow big leakage in flow line before IC-Reaction chamber

(b)Gas flow to see big leakage in flow line behind IC-Reaction chamber

PhosphoricAcidFilterCO2-Absorber

Gas flow diagram TOC-VCXH TroubleshootingNDIR-DetectorHalogen-ScrubberTrgergasTC-PortIC-PortDehu-midifierBlank-CheckDrainVesselBefeuchterDruckreglerSure8-Port-Ventil5 mL-SpritzeASI-V0-PortVerdnnungswasser12345678... localise big leakage (leakage behind IC-Reaction chamber)

3. Step:Remove upper end connection of Halogen-ScrubberShut opening at Halogen-ScrubberWatch Drain-Vessel

Result:(a)No air bubbles in Drain-Vessel big leakage in flow line before Halogen-Scrubber

(b)Air bubbles in Drain-Vessel to see leakage in flow line behind Halogen-Scrubber

PhosphoricAcidFilterCO2-Absorber

Gas flow diagram TOC-VCXH Error LocationNDIR-DetectorHalogen-ScrubberCarrier GasTC-PortIC-PortDehu-midifierPhosphoricAcidDrainVesselHumidifier8-Port-Valve5mL-SyringeASI-V0-Port12345678DrainBlank-CheckVesselCooling Loop150mL150mLFilterCO2-AbsorberAcid(HCL)Dilution WaterPressureRegulatorPump

Gas flow diagram TOC-VCXH Error LocationNDIR-DetektorHalogen-ScrubberCarrier GasTC-PortIC-PortFilterEnt-feuchterPhosphor-sureDrain-GefKhlschleifeHumidifierCO2-Absorber8-Port-Valve5mL-SyringeASI-V0-Port12345678DrainSchlauch-pumpeBlank-CheckGefNDIR-DetektorHalogen-ScrubberIC-PortFilterEnt-feuchterBlank-CheckPhosphor-sureDrain-GefCO2-AbsorberSchlauch-pumpeTC-Port

Injection tube, 0,5mm inner (638-41269-04)Sealing (631-43404)

O-Ring, Teflon (036-11408)O-Ring, Viton 4DP10A (036-11209)

O-Ring, Viton (036-11219) or subO-Ring, Viton Teflon coated(630-01566)150mLAcid(HCL)Dilution WaterPressureRegulator

Gas flow diagram TOC-VCXH Error LocationNDIR-DetektorHalogen-ScrubberCarrier GasTC-PortIC-PortFilterPhosphor-sureDrain-GefKhlschleifeHumidifierCO2-Absorber8-Port-Valve5mL-SyringeASI-V0-Port12345678DrainSchlauch-pumpeBlank-CheckGefNDIR-DetektorHalogen-ScrubberIC-PortFilterDrain-GefEnt-feuchterNDIR-DetektorHalogen-ScrubberIC-PortFilterEnt-feuchterBlank-CheckPhosphor-sureDrain-GefKhlschleifeCO2-AbsorberSchlauch-pumpeConnection Combustion Tube / Cooling Loop

Combustion Tube

Nut screw

Teflon-Sealing(035-62994-03)

T-Piece (638-40152)

Cooling Loop(638-41314) Teflon-Sealing for connection of Loop (035-62972-05)150mLAcid(HCL)Dilution WaterPressureRegulator

Gas flow diagram TOC-VCXH Error LocationNDIR-DetektorHalogen-ScrubberCarrier GasTC-PortIC-PortFilterEnt-feuchterPhosphoricAcidDrain-GefHumidifierCO2-Absorber8-Port-Valve5mL-SyringeASI-V0-Port12345678DrainBlank-CheckVesselOther leakage possibilities in location 1:

tube connections behind carrier gas Flowmetertube connections at/in Humidifiertube connections at Check Valvetube connection to TC-Porthole/crack in Cooling Loopconnection at other end of Cooling Loopconnections at Blank-Check- Vessel and Non Return Traplower tube connection to IC-Reaction chamberSealing IC-Port(analog TC-Port)Cooling Loop150mLAcid(HCL)Dilution WaterPressureRegulatorPump

Gas flow diagram TOC-VCXH Error LocationHalogen-ScrubberTrgergasTC-PortIC-PortDehu-midifierDrainVesselKhlschleifeBefeuchterDruckregler8-Port-Ventil5 mL-SpritzeASI-V0-Port12345678DrainVerdnnungswasserSureSchlauch-pumpeBlank-CheckGefOther leakage possibilities in location 2:

side connection at IC-Portconnections at Dehumidifierwater level in Drain-Vessellower connector Halogen-Scrubber

Other leakage possibilities in location 3:

upper connector Halogen-Scrubberconnections Filterconnections measurement cell

Consumable:Halogen-Scrubber (630-00992)Membrane Filter (046-00044-12)CO2-Absorber (630-00999)NDIR-Detector150mLFilterCO2-Absorber

TOC-V Series NDIR-Detector Halogen-ScrubberTrgergasTC-PortIC-PortEnt-feuchterKhlschleifeBefeuchterDruckregler8-Port-Ventil5 mL-SpritzeASI-V0-Port12345678DrainVerdnnungswasserSureSchlauch-pumpeBlank-CheckGefNDIR-DetectorStructure:

Important: Always change Halogen-Scrubber (630-00992) and Membrane Filter (046-00044-12) in time, otherwise gold coating of inner cell surface will be damaged!Filter150mLCO2-Absorber

TOC-V Series NDIR-Detector only one dynamic wide working range!automatic Zero-Adjustmentheated to 50C (Temperature-Compensation)Baseline Monitor can be switched between two resolutions.

TOC-V Series NDIR-Detector Switch off automatic Zero-Adjustment(only for testing purposes) by switching SW1 from NOR to Test PositionAdjustment of Baseline position possible with Potentiometer VR1 and VR2

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TOC-V Series NDIR-Detector 1. Baseline with activated Zero-Adjustment2. Switching SW1 from NOR to Test position3. Baseline with de-activated Zero-Adjustment(In this case slightly increased)

TOC-V Series NDIR-Detector Adjustment of Baseline position with Potentiometer VR1(if VR1 is at end position, continue with VR2)

TOC-VCXH Bypass TestWith at the beginning mentioned accessories, the various system components can be bypassed specifically, either the exact flow rate can be examined, e.g. to find out the cause of contamination (Effect: Baseline position too high )

Gas flow diagram TOC-VCXH OverviewNDIR-DetectorHalogen-ScrubberCarrier GasTC-PortIC-PortDehu-midifierBlank-CheckVesselPhosphoricAcidDrainVesselHumidifier8-Port-Valve5mL-SyringeASI-V0-Port12345678Drain150mL150mLCooling LoopFilterCO2-AbsorberAcid(HCL)Dilution WaterPressureRegulatorPump

Baseline Monitor - View normalNDIR-DetectorHalogen-ScrubberCarrier GasTC-PortIC-PortEnt-feuchterPhosphoricAcidDrainVesselBefeuchter8-Port-Valve5mL-SyringeASI-V0-Port12345678Schlauch-pumpe150mL150mLKhlschleifeFilterCO2-AbsorberView : 1000mVAcid(HCL)Dilution WaterPressureRegulator

Gas flow diagram TOC-VCXH Bypass TestNDIR-DetectorHalogen-ScrubberCarrier GasDehu-midifierBlank-CheckVesselPhosphoricAcidDrainVesselHumidifier8-Port-Valve5mL-SyringeASI-V0-Port12345678Drain150mL150mLCooling LoopRealisation:Connect outlet of carrier gas Flowmeter directly to inlet of measurement cell.FilterIC-PortCO2-AbsorberAcid(HCL)Dilution WaterPressureRegulatorPump

Baseline Monitor - View Bypass TestNDIR-DetectorCarrier GasTC-PortFilterEnt-feuchterDrain-GefBefeuchter8-Port-Valve5mL-SyringeASI-V0-Port12345678Schlauch-pumpe150mL150mLKhlschleifeCO2-AbsorberView: 20mV3. Typical deviation due tocontamination of various system components =>should not exceed 20mV(in view 1000mV this smalldifference is hardly to see)1. Baseline normal2. Air Peak from changing tube connectionsAcid(HCL)Dilution WaterPressureRegulator

What is different in TOC-VCXN Instruments ?Main difference between TOC-VCXH(High Sense) and TOC-VCXN(Normal Sense)Flowline constructionno IC-Reaction-Vessel=>IC- Measurement is done via acidification(HCL) in syringe and then sparging out the generated CO2 directly from the syringe to NDIR detector.

Gas flow diagram TOC-VCXN OverviewNDIR-DetectorHalogen-ScrubberCarrier GasTC-PortDehu-midifierMistTrapDrainVesselHumidifier5mL-SyringeASI-V0-Port12345678~ 230mLCooling LoopFilter~ 80mL~ 150mL~ 130mLDrain8-Port-ValveAdjusted Flowmeter reading is (due to back pressure of restrictors) only ~130mL, real flow is ~230mL CO2-AbsorberAcid(HCL)Dilution WaterPressureRegulator

Sample flow diagram TOC-VCXH TC - Inj.Carrier GasTC-PortIC-PortDehu-midifierPhosphoricAcidDrainVessel8-Port-Valve5mL-SyringeASI-V0-Port12345678TC/NPOCMeasurementDrainBlank-CheckVesselHumidifierCooling Loop150mLNDIR-DetectorHalogen-Scrubber150mLFilterCO2-AbsorberAcid(HCL)Dilution WaterPressureRegulatorPump

Sample flow diagram TOC-VCXH SamplingNDIR-DetektorCarrier GasTC-PortIC-PortEnt-feuchterPhosphor-sureDrain-Gef8-Port-Valve5mL-SyringeASI-V0-Port12345678TC/NPOCMessungFilterCO2-AbsorberDrainBlank-CheckGefHumidifierHalogen-ScrubberSchlauch-pumpeCooling Loop150mL8-Port-Valve and Syringe Unit:

bad recovery for repeated injections of one sample possible leakage at 8-Port-Valve or Syringe

Nut Screw

upper part of 8-Port-Valvewith outer threadTeflon-Rotor (631-20265)

8-Port-Valve complete,inclusive Rotor (638-56135)

5mL-Syringe (638-59213)Acid(HCL)Dilution WaterPressureRegulator

Sample flow diagram TOC-VCXH SamplingNDIR-DetektorCarrier GasTC-PortIC-PortEnt-feuchterPhosphor-sureDrain-Gef8-Port-Valve5mL-SyringeASI-V0-Port12345678TC/NPOCMessungFilterCO2-AbsorberDrainBlank-CheckGefHumidifierHalogen-ScrubberSchlauch-pumpeCooling Loop150mLExchange of plunger tip:

Use a sharp knife to make 2-3 incisions at bottom of old plunger tip and remove it from the plunger.

2-3 cuts

Pushing down on the plunger,Plungerpress the leading edge of new plunger tip (638-59213-01) new Tipstraight into the plunger tip seat

Plunger tip seatO-Rings

Acid(HCL)Dilution WaterPressureRegulator

Sample flow diagram TOC-VCXH TC-PortNDIR-DetektorCarrier GasTC-PortIC-PortEnt-feuchterPhosphor-sureDrain-Gef8-Port-Valve5mL-SyringeASI-V0-Port12345678TC/NPOCMessungFilterCO2-AbsorberDrainBlank-CheckGefHumidifierHalogen-ScrubberSchlauch-pumpeCooling Loop150mLSample Injection TC-Port:

e.g. appearance of double Peaks

OKnot OK not OK(side Injection) (liquid sprays)

Acid(HCL)Dilution WaterPressureRegulator

Sample flow diagram TOC-VCXH CatalystNDIR-DetektorCarrier GasTC-PortIC-PortEnt-feuchterPhosphor-sureDrain-Gef8-Port-Valve5mL-SyringeASI-V0-Port12345678TC/NPOCMessungFilterCO2-AbsorberDrainBlank-CheckGefHumidifierHalogen-ScrubberSchlauch-pumpeCooling Loop150mLExchange of Catalyst:

e.g. decreasing sensitivity

TC-Combustion Tube(631-41524SE)

Quartz Wool(630-00557)

2 Platinum Sheet(630-00105-01)

Normal Sense High Sense Catalyst Catalyst(638-60116)(630-00996)Acid(HCL)Dilution WaterPressureRegulator

Sample flow diagram TOC-VCXH IC-Inj.Carrier GasTC-PortIC-PortDehu-midifierPhosphoricAcidDrainVessel8-Port-Valve5mL-SyringeASI-V0-Port12345678ICMeasurementDrainHumidifierBlank-CheckVesselCooling Loop150mLNDIR-DetectorHalogen-Scrubber150mLFilterCO2-AbsorberAcid(HCL)Dilution WaterPressureRegulatorPump

Sample flow diagram TOC-VCXH IC-PortVerdnnungswasserSureTrgergasTC-PortIC-PortDehu-midifierPhosphoricAcidDrainVessel8-Port-Ventil5 mL-SpritzeASI-V0-Port12345678ICMeasurementDrainBefeuchterBlank-CheckGefKhlschleifeDruckregler150mLRegeneration of IC-solution:

e.g. decreasing sensitivity, broad IC-Peaks

Valve switchesperistaltic(click) Pump

25%Phosphoric Acid(630-00710SE)NDIR-DetectorHalogen-Scrubber150mLFilterCO2-Absorber

Sample flow diagram TOC-VCXN IC-Inj.NDIR-DetectorHalogen-ScrubberCarrier GasTC-PortDehu-midifierMistTrapDrainVesselHumidifier5mL-SyringeASI-V0-Port12345678~ 230mLCooling LoopFilter~ 80mL~ 150mL~ 130mLDrain8-Port-ValveICMeasurementCO2-AbsorberAcid(HCL)Dilution WaterPressureRegulator

Sample flow diagram TOC-VCXN IC-Inj.NDIR-DetectorCarrier GasTC-PortEnt-feuchterSchmutz-FalleDrain-GefBefeuchter5mL-SyringeASI-V0-Port12345678~ 230mLKhlschleifeFilter~ 80mL~ 150mL~ 130mLDrain8-Port-VentilICMessungCO2-AbsorberCheck of acid addition:

Observation:IC-results generally too lowPeak of 1. injection lower then following Peaks

1. Step:check filling of acid container,check correct acid sampling tube position

2. Step:Are there air bubbles/no liquid in acid sampling tube (especially near 8-Port Valve) to observe ?=> check if tube connection at 8-Port Valve is tight=> exchange possible defective tube (638-41337-03)=> exchange possible defective Rotor (631-20265)=> exchange complete 8-Port Valve (638-56135), inclusive RotorAcid(HCL)Dilution WaterPressureRegulator

Good luck for(hopefully seldom)Troubleshooting