Hach TV Converter Box 3654 Portable H2/N2 Analyzer User manual

Brand: Hach

Model: TV Converter Box 3654 Portable H2/N2 Analyzer

Category: Measuring, testing & control

Type: User manual

This manual is also suitable for

3654 Portable H2/N2 Analyzer

Operator Manual

ORBISPHERE 3654

Revision H - 14/03/2008

3654 Portable H2/N2 Analyzer - Important Information

Operator Manual

ORBISPHERE

Product Recycling Information

ENGLISH

Electrical equipment marked with this symbol may not be disposed of in European public

disposal systems after 12 August 2005. In conformity with European local and national

regulations (EU Directive 2002/96/EC), European electrical equipment users must now

return old or end-of-life equipment to the manufacturer for disposal at no charge to the

user.

Note: For return for recycling, please contact the equipment manufacturer or supplier for

instructions on how to return end-of-life equipment for proper disposal.

DEUTSCH

Elektrogeräte, die mit diesem Symbol gekennzeichnet sind, dürfen in Europa nach dem 12. August 2005

nicht mehr über die öffentliche Abfallentsorgung entsorgt werden. In Übereinstimmung mit lokalen und

nationalen europäischen Bestimmungen (EU-Richtlinie 2002/96/EC), müssen Benutzer von

Elektrogeräten in Europa ab diesem Zeitpunkt alte bzw. zu verschrottende Geräte zur Entsorgung

kostenfrei an den Hersteller zurückgeben.

Hinweis: Bitte wenden Sie sich an den Hersteller bzw. an den Händler, von dem Sie das Gerät bezogen

haben, um Informationen zur Rückgabe des Altgeräts zur ordnungsgemäßen Entsorgung zu erhalten.

FRANCAIS

A partir du 12 août 2005, il est interdit de mettre au rebut le matériel électrique marqué de ce symbole par

les voies habituelles de déchetterie publique. Conformément à la réglementation européenne (directive

UE 2002/96/EC), les utilisateurs de matériel électrique en Europe doivent désormais retourner le matériel

usé ou périmé au fabricant pour élimination, sans frais pour l'utilisateur.

Remarque: Veuillez vous adresser au fabricant ou au fournisseur du matériel pour les instructions de

retour du matériel usé ou périmé aux fins d'élimination conforme.

ITALIANO

Le apparecchiature elettriche con apposto questo simbolo non possono essere smaltite nelle discariche

pubbliche europee successivamente al 12 agosto 2005. In conformità alle normative europee locali e

nazionali (Direttiva UE 2002/96/EC), gli utilizzatori europei di apparecchiature elettriche devono restituire

al produttore le apparecchiature vecchie o a fine vita per lo smaltimento senza alcun costo a carico

dell’utilizzatore.

Nota: Per conoscere le modalità di restituzione delle apparecchiature a fine vita da riciclare, contattare il

produttore o il fornitore dell’apparecchiatura per un corretto smaltimento.

DANSK

Elektriske apparater, der er mærket med dette symbol, må ikke bortskaffes i europæiske offentlige

affaldssystemer efter den 12. august 2005. I henhold til europæiske lokale og nationale regler (EU-

direktiv 2002/96/EF) skal europæiske brugere af elektriske apparater nu returnere gamle eller udtjente

apparater til producenten med henblik på bortskaffelse uden omkostninger for brugeren.

Bemærk: I forbindelse med returnering til genbrug skal du kontakte producenten eller leverandøren af

apparatet for at få instruktioner om, hvordan udtjente apparater bortskaffes korrekt.

Important Information - 3654 Portable H2/N2 Analyzer

Operator Manual

ORBISPHERE

SVENSKA

Elektronikutrustning som är märkt med denna symbol kanske inte kan lämnas in på europeiska offentliga

sopstationer efter 2005-08-12. Enligt europeiska lokala och nationella föreskrifter (EU-direktiv 2002/96/

EC) måste användare av elektronikutrustning i Europa nu återlämna gammal eller utrangerad utrustning

till tillverkaren för kassering utan kostnad för användaren.

Obs! Om du ska återlämna utrustning för återvinning ska du kontakta tillverkaren av utrustningen eller

återförsäljaren för att få anvisningar om hur du återlämnar kasserad utrustning för att den ska bortskaffas

på rätt sätt.

ESPANOL

A partir del 12 de agosto de 2005, los equipos eléctricos que lleven este símbolo no deberán ser

desechados en los puntos limpios europeos. De conformidad con las normativas europeas locales y

nacionales (Directiva de la UE 2002/96/EC), a partir de esa fecha, los usuarios europeos de equipos

eléctricos deberán devolver los equipos usados u obsoletos al fabricante de los mismos para su

reciclado, sin coste alguno para el usuario.

Nota: Sírvase ponerse en contacto con el fabricante o proveedor de los equipos para solicitar

instrucciones sobre cómo devolver los equipos obsoletos para su correcto reciclado.

NEDERLANDS

Elektrische apparatuur die is voorzien van dit symbool mag na 12 augustus 2005 niet meer worden

afgevoerd naar Europese openbare afvalsystemen. Conform Europese lokale en nationale wetgegeving

(EU-richtlijn 2002/96/EC) dienen gebruikers van elektrische apparaten voortaan hun oude of afgedankte

apparatuur kosteloos voor recycling of vernietiging naar de producent terug te brengen.

Nota: Als u apparatuur voor recycling terugbrengt, moet u contact opnemen met de producent of

leverancier voor instructies voor het terugbrengen van de afgedankte apparatuur voor een juiste

verwerking.

POLSKI

Sprzęt elektryczny oznaczony takim symbolem nie może być likwidowany w europejskich systemach

utylizacji po dniu 12 sierpnia 2005. Zgodnie z europejskimi, lokalnymi i państwowymi przepisami prawa

(Dyrektywa Unii Europejskiej 2002/96/EC), użytkownicy sprzętu elektrycznego w Europie muszą obecie

przekazywać Producentowi stary sprzęt lub sprzęt po okresie użytkowania do bezpłatnej utylizacji.

Uwaga: Aby przekazać sprzęt do recyklingu, należy zwrócić się do producenta lub dostawcy sprzętu w

celu uzyskania instrukcji dotyczących procedur przekazywania do utylizacji sprzętu po okresie użytkow-

nia.

PORTUGUES

Qualquer equipamento eléctrico que ostente este símbolo não poderá ser eliminado através dos

sistemas públicos europeus de tratamento de resíduos sólidos a partir de 12 de Agosto de 2005. De

acordo com as normas locais e europeias (Directiva Europeia 2002/96/EC), os utilizadores europeus de

equipamentos eléctricos deverão agora devolver os seus equipamentos velhos ou em fim de vida ao

produtor para o respectivo tratamento sem quaisquer custos para o utilizador.

Nota: No que toca à devolução para reciclagem, por favor, contacte o produtor ou fornecedor do

equipamento para instruções de devolução de equipamento em fim de vida para a sua correcta

eliminação.

3654 Portable H2/N2 Analyzer - Important Information

Operator Manual

ORBISPHERE

Product Disposal

Note:

The following only applies to European customers.

Hach Ultra is committed to ensuring that the risk of any environmental damage or

pollution caused by any of its products is minimized as far as possible. The European

Waste Electrical and Electronic Equipment (WEEE) Directive (2002/96/EC) that came

into force on August 13 2005 aims to reduce the waste arising from electrical and

electronic equipment; and improve the environmental performance of all those involved

in the life cycle of electrical and electronic equipment.

In conformity with European local and national regulations (EU Directive 2002/96/EC

stated above), electrical equipment marked with the above symbol may not be disposed

of in European public disposal systems after 12 August 2005.

Hach Ultra will offer to take back (free of charge to the customer) any old,

unserviceable or redundant analyzers and systems which carry the above symbol, and

which were originally supplied by Hach Ultra. Hach Ultra will then be responsible for the

disposal of this equipment.

In addition, Hach Ultra will offer to take back (at cost to the customer) any old,

unserviceable or redundant analyzers and systems which do not carry the above symbol,

but which were originally supplied by Hach Ultra. Hach Ultra will then be responsible for

the disposal of this equipment.

Should you wish to arrange for the disposal of any piece of equipment originally supplied

by Hach Ultra, please contact your supplier or our After Sales Service department in

Geneva for instructions on how to return this equipment for proper disposal.

Important Information - 3654 Portable H2/N2 Analyzer

Operator Manual

ORBISPHERE

Restriction of Hazardous Substances

Note:

The following only applies to exports of the product into the People’s Republic of China.

Marking

Products contain toxic or hazardous substances or elements.

Environment Protection Use Period Marking (years).

Toxic or Hazardous Substances and Elements

Part Name

Lead

(Pb)

Mercury

(Hg)

Cadmium

(Cd)

Hexavalent

Chromium

(Cr VI)

Polybrom

Biphenyls

(PBB)

Polybrom

Diphenyls

(PBDE)

1184 Board X

1112 Analog Board X

Spacer X

External Connector X

O: Indicates that this toxic or hazardous substance contained in all homogeneous material for

this part is below the limit requirement

X: Indicates that this toxic or hazardous substance contained in at least one of the

homogeneous materials used for this part is above the limit requirement

3654 Portable H2/N2 Analyzer - Table of Contents 1 of 66

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ORBISPHERE

Table of Contents

1 Installation

1.1 What you have Received.....................................................................9

1.2 WIN3654 PC Program Installation.....................................................10

1.3 Atmospheric Pressure Equilibrium ....................................................10

1.4 Sensor Installation.............................................................................10

1.5 Purge Gas Connection ......................................................................11

1.6 Connections.......................................................................................11

1.6.1 External Power Supply (optional) ........................................11

1.6.2 Instrument - PC Connection ................................................11

1.7 Flow Chamber Installation.................................................................13

1.8 Installation Completion Check List ....................................................14

1.8.1 Power ..................................................................................14

1.8.2 Check the Purge Gas Supply ..............................................14

1.8.3 Instrument Clock Setting .....................................................14

1.8.4 Barometric Pressure Setting................................................14

1.8.5 Sensor Membrane...............................................................14

1.8.6 Flow Chamber .....................................................................15

2 Operating Instructions

2.1 Operating Controls ............................................................................17

2.2 Taking Measurements.......................................................................19

2.2.1 Select Gas Measurement Phase.........................................19

2.2.2 Measurement Mode.............................................................19

2.3 Storing Measurements In the Instrument ..........................................20

2.3.1 Automatic Data Acquisition..................................................20

2.3.2 Manual Data Acquisition......................................................21

2.3.3 Viewing Stored Measurements............................................22

2.4 Storing and Accessing Measurements From a Computer.................22

2.4.1 Downloading Stored Values ................................................22

2.4.2 Altering the Sampling Point Descriptions ............................23

2.4.3 Copying Values ...................................................................23

2.4.4 Saving Values......................................................................23

2.4.5 Printing Values ....................................................................24

2.4.6 Clearing Stored Values........................................................24

2.5 Monitoring Measurements In Real-Time ...........................................25

2.6 After Use and Storage.......................................................................26

3 Options Setup

3.1 Main Menu Basics .............................................................................27

3.2 Analyzer - PC Connection .................................................................29

3.3 Reviewing Instrument Configuration..................................................29

3.4 Configuring the Instrument ................................................................29

3.4.1 Gas Measurement Phase....................................................29

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3.4.2 Measurement Units..............................................................30

3.4.3 Membrane Selection............................................................31

3.4.4 Automatic Data Acquisition - Setting Sampling Intervals.....31

3.4.5 Calibration Medium..............................................................32

3.4.6 Locking Out the Instrument’s CAL Button............................32

3.4.7 Rolling Average....................................................................32

3.4.8 Automatic Shutdown............................................................33

3.4.9 Measurement Mode.............................................................33

4 Calibrations

4.1 Barometric Pressure Sensor Calibration ...........................................35

4.2 Sensor Calibration .............................................................................36

4.2.1 Calibration Setup .................................................................37

4.2.2 Calibration In H

or N

at Atmospheric Pressure.................38

4.2.3 Calibration In H

or N

at Elevated Pressure.......................39

4.2.4 Calibrating In a Liquid H

or N

Solution..............................40

5 Accessories and Attachments

5.1 Model 32311 Flow Meter ...................................................................41

5.2 Model 32939 External Power Supply.................................................42

6 Maintenance and Troubleshooting

6.1 Power Supply.....................................................................................43

6.2 Sensor Maintenance..........................................................................43

6.2.1 Maintenance Schedule ........................................................43

6.2.2 Testing the Sensor Condition...............................................43

6.2.3 Mounting Dual Membranes..................................................44

6.3 Membrane Replacement ...................................................................44

6.3.1 Removing the Membrane.....................................................44

6.3.2 Installing the Membrane.......................................................45

6.4 Purge Gas Cylinder Refill ..................................................................48

6.4.1 N

Purge Gas.......................................................................48

6.4.2 CO

Purge Gas....................................................................49

6.4.3 Filling the Purge Gas Cylinder .............................................49

6.5 Troubleshooting - Instrument.............................................................50

6.5.1 Serial Test............................................................................50

6.5.2 Keyboard Test .....................................................................50

6.5.3 Display Test .........................................................................51

6.5.4 Clock Settings......................................................................51

6.5.5 Analog Voltages View..........................................................52

6.5.6 Measurements View ............................................................52

6.6 Troubleshooting - Operation ..............................................................53

6.6.1 Program Identification..........................................................53

6.6.2 Diagnostics Messages.........................................................53

6.6.3 Continuous Purge ................................................................53

6.6.4 Troubleshooting Table .........................................................54

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7 Specifications

7.1 Instrument Specifications ..................................................................55

7.2 Sensor Specifications........................................................................56

8 Part Lists

8.1 Instrument Configurations .................................................................59

8.2 TC Sensor and Parts on Configured System ....................................59

8.3 Analyzer Spare Parts.........................................................................59

8.4 Sensor Spare Parts ...........................................................................60

Appendix A: Glossary

A.1 Common Units...................................................................................61

A.2 Terms and Definitions........................................................................61

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3654 Portable H2/N2 Analyzer - Manual Overview 5 of 66

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Manual Overview

About this Manual

The information in this manual has been carefully checked and is believed to be

accurate. However, Hach Ultra assumes no responsibility for any inaccuracies that may

be contained in this manual. In no event will Hach Ultra be liable for direct, indirect,

special, incidental, or consequential damages resulting from any defect or omission in

this manual, even if advised of the possibility of such damages. In the interest of

continued product development, Hach Ultra reserves the right to make improvements in

this manual and the products it describes at any time, without notice or obligation.

Published in Europe.

manual may be reproduced or transmitted in any form or by any means without the

written permission of Hach Ultra.

Revision History

• Initial Release, November 1998, Orbisphere

• Revision A, April 2000, Orbisphere

• Revision B, July 2001, Orbisphere

• Revision C, July 2002, Orbisphere

• Revision D, October 2003, Hach Ultra Analytics

• Revision E, May 2004, Hach Ultra Analytics

• Revision F, February 2006, Hach Ultra

• Revision G, May 2007, Hach Ultra

• Revision H, July 2007, Hach Ultra

Safety Conventions

WARNING

A warning is used to indicate a condition which, if not met, could cause serious personal

injury and/or death. Do not move beyond a warning until all conditions have been met.

CAUTION:

A caution is used to indicate a condition which, if not met, could cause minor or

moderate personal injury and/or damage to the equipment. Do not move beyond a

caution until all conditions have been met.

Note:

A note is used to indicate important information or instructions that should be considered

before operating the equipment.

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ORBISPHERE

Safety Precautions

Please read the entire manual before unpacking, setting up, or operating this instrument.

Pay particular attention to all warning and caution statements. Failure to do so could

result in serious injury to the operator or damage to the equipment.

To ensure the protection provided by this equipment is not impaired, do not use or install

this equipment in any manner other than that which is specified in this manual.

Safety Recommendations

For safe operation, it is imperative that these service instructions be read before use and

that the safety recommendations mentioned herein be scrupulously respected. If danger

warnings are not heeded to, serious material or bodily injury could occur.

Service and Repairs

None of the instrument’s components can be serviced by the user. Only personnel from

Hach Ultra or its approved representative(s) is (are) authorized to attempt repairs to the

system and only components formally approved by the manufacturer should be used.

Any attempt at repairing the instrument in contravention of these principles could cause

damage to the instrument and corporal injury to the person carrying out the repair. It

renders the warranty null and void and could compromise the correct working of the

instrument and the electrical integrity or the CE compliance of the instrument.

If you have any problems with installation, starting, or using the instrument please

contact the company that sold it to you. If this is not possible, or if the results of this

approach are not satisfactory, please contact the manufacturer’s Customer Service.

3654 Portable H2/N2 Analyzer - Manual Overview 7 of 66

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ORBISPHERE

Precautionary Labels

Read all labels and tags attached to the instrument. Personal injury or damage to the

instrument could occur if not observed.

Acknowledgements

• Dacron, Delrin, Tedlar, Tefzel, and Viton are registered trademarks of DuPont.

• Halar is a registered trademark of Ausimont U.S.A., Inc.

• Hastelloy is a registered trademark of Haynes International.

• Kynar is a registered trademark of The Pennwalt Corporation.

• Monel is a registered trademark of IMCO Alloys International, Inc.

• Saran is a registered trademark of Dow Chemical Co.

• Swagelok is a registered trademark of Swagelok Co.

• Microsoft and Windows are registered trademarks of Microsoft Corporation.

This symbol, when noted on a product enclosure or barrier, indicates that a risk of

electrical shock and/or electrocution exists and indicates that only individuals

qualified to work with hazardous voltages should open the enclosure or remove

the barrier.

This symbol, when noted on the product, indicates that the marked item can be hot

and should not be touched without care.

This symbol, when noted on the product, indicates the presence of devices

sensitive to electrostatic discharge and indicates that care must be taken to

prevent damage to them.

This symbol, when noted on the product, identifies a risk of chemical harm and

indicates that only individuals qualified and trained to work with chemicals should

handle chemicals or perform maintenance on chemical delivery systems

associated with the equipment.

This symbol, if noted on the product, indicates the need for protective eye wear.

This symbol, when noted on the product, identifies the location of the connection

for protective earth (ground).

Electrical equipment marked with this symbol may not be disposed of in European

public disposal systems. In conformity with European local and national

regulations, European electrical equipment users must now return old or

end-of-life equipment to the manufacturer for disposal at no charge to the user.

Products marked with this symbol indicates that the product contains toxic or

hazardous substances or elements. The number inside the symbol indicates the

environmental protection use period in years.

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3654 Portable H2/N2 Analyzer - Installation 9 of 66

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ORBISPHERE

1 Installation

This section provides necessary information to set up the instrument. If you have any

questions or experience any difficulties, do not hesitate to contact your Hach Ultra

representative regarding this procedure.

1.1 What you have Received

The ORBISPHERE 3654 portable analyzer includes the following major components:

• An instrument, model 3654/xxx, with keypad, display, and handle.

• A membrane-covered thermal conductivity (TC) sensor, either model 3127x for H

measurement or model 31570 for N

measurement.

• A flow chamber, either model 32013A with flow adjustment valve for N

analyzers,

or model 32015 without flow adjustment valve for H

analyzers.

• A WIN3654 program on a CD with a PC communications cable.

Also included with your shipment are two C-type batteries, a recharge kit in a plastic case

containing materials to maintain your sensor and a model 32824A refilling hose to refill

the purge gas cylinder

Locate the instrument close to the sample being analyzed, and to the Personal Computer

(PC) if one is being used. A LEMO-6 connector for RS-232 serial output to a PC is on the

right side of the instrument (see Fig 1-1 above).

Make sure you install a fully charged set of batteries, or connect the instrument to an

external power source (see “External Power Supply (optional)” on page 11), before

switching the instrument on and exposing the sensor’s membrane to any liquid.

Fig 1-1:

ORBISPHERE 3654 Portable Analyzer

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ORBISPHERE

1.2 WIN3654 PC Program Installation

Install the WIN3654 program onto the PC by inserting the accompanying CD into your

PC and running the SetUp program. Simply follow the on-screen instructions.

When finished, a new Windows Program Group labeled Orbisphere is created

containing the software and help files.

1.3 Atmospheric Pressure Equilibrium

As soon as you receive the instrument, it will be necessary to ensure the interior and

exterior of the instrument are both at the same atmospheric pressure. It is probable that

during shipment these pressures will become different.

To ensure the pressures are equal, simply press the relief valve switch located on the top

of the instrument (see Fig 1-1 on page 9) and hold it down for about 5 seconds before

releasing.

1.4 Sensor Installation

The TC sensor connects to the instrument base through a 10-pin LEMO connector. A

locking pin holds the sensor in place.

Both the membrane-covered TC sensor and the flow chamber are shipped pre-installed

on the instrument. It will, however, be necessary to remove the flow chamber when

servicing the sensor. For details refer to “Sensor Maintenance” on page 43.

Fig 1-2:

TC Sensor - Exploded View

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1.5 Purge Gas Connection

It is critical that the TC sensor has a supply of purge gas running before operating the

system. The TC sensor, when exposed to a liquid sample, will become damaged if the

purge gas is not running.

is used to purge the N

sensor and N

or CO

is used to purge the H

sensor. A

cylinder located at the bottom of the instrument supplies the purge gas. This cylinder is

refillable (see “Purge Gas Cylinder Refill” on page 48).

The TC sensor is purged cyclically. In measurement mode, a cycle consists of a 4

second purge followed by 16 seconds of measurement. When the instrument is in

standby, the purge time is the same, followed by a 17 minute delay. During the purge

time, the flow rate varies, depending on the pressure inside the cylinder. At least four

bubbles should exit from the purge gas exit during the purge time.

The purge gas input to the sensor uses a Tygon tube (4 mm outside/2 mm inside

diameter, 110 mm long) that attaches to the base of the sensor. Refer to the exploded

sensor diagram in Fig 1-2 on page 10.

The hole in the side and near the base of the sensor is the purge gas exit. To check the

purge gas flow rate, push the supplied nylon tubing into this hole, to its limit. To

disconnect it again, press on the ring surrounding the tube and pull out.

To check the purge gas flow rate, immerse the end of this tubing in water and switch on

the instrument. Gas should flow intermittently out of the tube.

Note:

During normal operation, and especially when the instrument is in standby mode,

ensure that the exit of the purge gas tube is exposed to the atmosphere and not in

contact with any liquid or hard surface.

1.6 Connections

1.6.1 External Power Supply (optional)

The instrument is usually powered by the batteries supplied. You can, however, power it

from an external power source using the model 32939 power supply adaptor as

described and illustrated in “Model 32939 External Power Supply” on page 42.

Connect the male LEMO-6 plug on the 32939, to the RS-232 connector on the right side

of the instrument. The female LEMO-6 plug can then be used to connect to your PC (if

required) using the standard RS-232 cable supplied with the instrument.

Plug the transformer into your mains power supply using the cable supplied.

Note:

If the external power supply is not clean, this may result in unstable measurements.

1.6.2 Instrument - PC Connection

An RS-232 cable is supplied with the instrument, with a 6-pin LEMO plug on one end and

a 9-pin D-Type plug on the other.

Note:

If you use an adapter for the connection to the PC, make sure it is designed for this

purpose and, thus, has all nine pins accessible. Some 25-to-9 pin adapters are supplied

for specific use, such as a mouse, and these may have only certain pins available.

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ORBISPHERE

It is not necessary to keep the PC connected to the instrument during measurement. This

connection is required for downloading stored measurements, real-time monitoring,

reviewing and changing configuration parameters and testing the instrument from the PC

(see “Troubleshooting - Instrument” on page 50 for details).

Fig 1-3:

Interface Box Connections

Pin RS232 Signal

Pin 1 Transmitted data (TXD)

Pin 2 Received data (RXD)

Pin 3 Not Used

Pin 4 Not Used

Pin 5 Not Used

Pin 6 Ground

Pin Use

Pin 1 Not Used

Pin 2 RS-232 Transmitted Data (TXD)

Pin 3 RS-232 Received Data (RXD)

Pin 4 Not Used

Pin 5 Ground

Pin 6 Not Used

Pin 7 Not Used

Pin 8 Not Used

Pin 9 Not Used

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1.7 Flow Chamber Installation

The model 32013A or 32015 flow chamber allows the liquid or gaseous sample past the

TC and temperature sensors. The flow chamber attaches to the TC sensor with a

threaded collar and is sealed to the sensor with two O-rings (EPDM

∅20x2 mm and NBR

∅4x1.5 mm).

CAUTION:

At the top of the TC sensor is a thermistor to measure the sample temperature. Do not

bend or damage this component.

The flow chamber’s inlet and outlet use ¼-inch diameter transparent plastic tubing.

Connect by compression fittings to the sample source and to the drain, respectively.

You may also have received a model 32051 sample tube adapter to attach the flow

chamber inlet tubing to the sampling point (see “WIN3654 PC Program Installation” on

page 10).

Fig 1-4:

Flow Chamber 32013A

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1.8 Installation Completion Check List

1.8.1 Power

The instrument is designed to work on battery power or an external power supply.

If battery power should drop, a [LO BAT] warning appears in the instrument LCD's top

left corner, and they should be replaced.

If using an external power supply, ensure that this is clean, otherwise it may result in

unstable measurements.

1.8.2 Check the Purge Gas Supply

It is critical that the TC sensor has a supply of purge gas before operating the system.

The TC sensor, when exposed to a liquid sample, could be damaged if the instrument

purge gas cylinder is empty. At the same time, it is also critical that the instrument has a

power supply to ensure the purge gas is supplied to the sensor on a regular basis. The

system purges the sensor for 4 seconds every 20 seconds during normal measurement

mode, and every 17 minutes during standby mode.

A small, pressurized cylinder at the bottom of the instrument supplies purge gas to the

sensor. The purge gas required is:

•N

purge for H

measurements.

•CO

purge for N

or H

measurements.

Verify that the purge gas is flowing at more than four bubbles during the purge cycle, by

placing the purge gas exit tubing into water.

Note:

You must supply power constantly to the instrument, since it purges the sensor

continuously while power is on. When you put the instrument in standby, it still maintains

the purge gas supply to the sensor. Thus, make certain to supply battery or optional

external DC power constantly if the instrument is in standby and the sensor is exposed

to a sample. The batteries will provide about three weeks of power for purging while the

instrument is off.

1.8.3 Instrument Clock Setting

If you use the instrument to store measurements for downloading to a PC, you should

verify the date and time settings of the instrument's internal clock, as described in “Clock

Settings” on page 51.

1.8.4 Barometric Pressure Setting

The internal barometric pressure sensor has been factory calibrated but should be

verified on-site with a precision certified barometer, and corrected if necessary. For

instructions on how to do this, please refer to “Barometric Pressure Sensor Calibration”

on page 35.

1.8.5 Sensor Membrane

Check that the membrane has been installed correctly, and is flat, tight, and wrinkle free.

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Hach TV Converter Box 3654 Portable H2/N2 Analyzer User manual

Brand: Hach

Model: TV Converter Box 3654 Portable H2/N2 Analyzer

Category: Measuring, testing & control

Type: User manual

This manual is also suitable for

3654 Portable H2/N2 Analyzer

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Hach TV Converter Box 3654 Portable H2/N2 Analyzer User manual

This manual is also suitable for

Hach TV Converter Box 3654 Portable H2/N2 Analyzer User manual

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