Hach ORBISPHERE 3650 Atex Basic User Manual

DOC024.98.93004

ORBISPHERE Model

3650 ATEX

12/2019, Edition 5

Basic User Manual

Allgemeines Benutzerhandbuch

Manuale di base per l'utente

Manuel d'utilisation de base

Manual básico do utilizador

Basisgebruikershandleiding

Начальное руководство пользователя

Table of Contents

English..............................................................................................................................3

Deutsch.......................................................................................................................... 23

Italiano............................................................................................................................ 45

Français......................................................................................................................... 67

Português...................................................................................................................... 89

Nederlands................................................................................................................. 111

Русский........................................................................................................................133

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Table of Contents

1 Table of contents on page 3

2 Specifications on page 3

3 Expanded manual version on page 4

4 General information on page 4

5 Installation on page 7

6 User interface on page 12

7 Options setup on page 17

8 Calibration on page 19

9 Maintenance on page 21

10 Troubleshooting on page 21

Section 1 Table of contents

Specifications on page 3 Options setup on page 17

General information on page 4 Calibration on page 19

Installation on page 7 Maintenance on page 21

User interface on page 12 Troubleshooting on page 21

Section 2 Specifications

Specifications are subject to change without notice.

2.1 3650EX Instrument

Specification Details

Power supply Model 32960 non-rechargeable lithium battery

Power autonomy 60 hours continuous use

Signal drift < 0.5% of reading between service

Serial output (RS232) Baud rate: 9600; Stop Bits: 1; Start Bits: 0; Parity: None;

Temperature compensation range -5 to 60°C

Instrument operating limits 0 to 45°C

Dimensions (H x W x D) 150 mm x 115 mm x 220 mm

Weight 2.4 kg

Enclosure protection IP 65/NEMA 4

EMC standards EN 61326

EXPROOF standards EN 60079-0; EN 60079-11

LCIE 03 ATEX 6003 X

II 1 G, EX ia IIC T4 Ga

ISO certification ISO9001/EN29001

2.2 29122 Interface box

Specification Details

Power supply

120 VAC 50/60 Hz (Model 29122.A)

230 VAC 50/60 Hz (Model 29122.B)

Power consumption

11 VA (Model 29122.A)

7 VA (Model 29122.B)

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Specification Details

Fuse

Max current 250 mA (Model 29122.A)

Max current 100 mA (Model 29122.B)

Instrument operating limits 0 to 45°C

Dimensions (H x W x D) 70 mm x 140 mm x 190 mm

Weight 0.65 kg

Enclosure protection IP 20

Enclosure materials ABS FR (V0)

EMC Directive EN 61326-1

LVD Directive EN 61010-1

2.3 Analyzer gas and display options

Instrument model Gas measured Display units Maximum display resolution

3650EX/111 Oxygen ppm/ppb (liquid) 1 ppb

3650EX/112 Oxygen %/ppm (gaseous) 1 ppm

3650EX/113 Oxygen

ppm (liquid) 0.001 ppm

% (gaseous) 0.001%

3650EX/114 Oxygen kPa/Pa (gaseous) 1 Pa

3650EX/115 Oxygen bar/mbar (gaseous) 1 mbar

3650EX/211 Hydrogen ppm/ppb (liquid) 0.01 ppb

3650EX/212 Hydrogen %/ppm (gaseous) 0.01 ppm

Section 3 Expanded manual version

For additional information, refer to the expanded version of this manual, which is available on the

manufacturer's website.

Section 4 General information

In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential

damages resulting from any defect or omission in this manual. The manufacturer reserves the right to

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

Revised editions are found on the manufacturer’s website.

4.1 Safety information

N O T I C E

The manufacturer is not responsible for any damages due to misapplication or misuse of this product including,

without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent

permitted under applicable law. The user is solely responsible to identify critical application risks and install

appropriate mechanisms to protect processes during a possible equipment malfunction.

Please read this entire manual before unpacking, setting up or operating this equipment. Pay

attention to all danger and caution statements. Failure to do so could result in serious injury to the

operator or damage to the equipment.

Make sure that the protection provided by this equipment is not impaired. Do not use or install this

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

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4.2 Use of hazard information

D A N G E R

Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.

W A R N I N G

Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious

injury.

C A U T I O N

Indicates a potentially hazardous situation that may result in minor or moderate injury.

N O T I C E

Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special

emphasis.

4.3 Interface box (model 29122)

W A R N I N G

Explosion hazard. Only use the Interface Box 29122 in the safe area and never in the explosive area.

W A R N I N G

The interface box should only be connected to an earthed power supply socket.

W A R N I N G

In accordance with safety standards, it must be possible to disconnect the external power supply of the interface

box in its immediate vicinity.

W A R N I N G

Any maintenance of the interface box should be performed exclusively by personnel specialized and authorized to

work on electrical equipment, in accordance with relevant local regulations.

W A R N I N G

Disconnect the interface box from the power supply before carrying out any maintenance (including changing

fuses).

W A R N I N G

Electrical danger and fire hazard. Only use the supplied power cable. Only qualified experts may perform the

tasks detailed in the installation section of this manual, while adhering to all locally valid safety regulations.

W A R N I N G

Removable power cables must not be replaced with inadequately dimensioned power cables.

4.4 Precautionary labels

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

could occur if not observed. A symbol on the instrument is referenced in the manual with a

precautionary statement.

This is the safety alert symbol. Obey all safety messages that follow this symbol to avoid potential

injury. If on the instrument, refer to the instruction manual for operation or safety information.

This symbol indicates that a risk of electrical shock and/or electrocution exists.

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This symbol indicates the presence of devices sensitive to Electro-static Discharge (ESD) and

indicates that care must be taken to prevent damage with the equipment.

This symbol, when noted on a product, indicates the instrument is connected to alternate current.

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

public disposal systems. 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.

Products marked with this symbol indicates that the product must only be used in the safe area and

never in the explosive area.

4.5 Intrinsically safe conformity

Orbisphere series 3650Ex analyzers for gas measurement have been certified as Intrinsically Safe

by:

• LCIE (Laboratoire Central des Industries Electriques), 33 av. Division Leclerc, Fontenay aux

Roses 92260, France.

Note: LCIE is a notified body number 0081 in accordance with the European ATEX Directive.

LCIE certifies that the electrical apparatus has been found to comply with the essential Health and

Safety Requirements: EN 60079-0, EN 60079-11.

These instruments are certified II 1G EX ia IIC T4 Ga under EU type Examination Certificate

number LCIE 03 ATEX 6003 X

Table 1 ATEX Certification

Category Explanation

II 1 G

ATEX marking: Surface apparatus with permanent explosive gas presence.

Ex Explosion-proof apparatus built to the universal standards below:

ia Type of protection: The highest category, based on a safety factor of 1.5 on two faults. No

combination of two faults in the 3650Ex can produce a spark, or heating, causing ignition of an

explosive atmosphere.

IIC Gas group: Corresponds to the most flammable gases, including hydrogen.

T4 Temperature category: Maximum surface temperature of 135º C.

Ga Equipment protection level.

4.5.1 Specific conditions of use

Use only non-rechargeable cell of type LS 26500 SAFT. Cell replacement is allowed in explosive

area.

The use of the external power supply input is not allowed in hazardous area. External link shall be

equipped with protection for voltage limitation when used in the non- hazardous area.

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The equipment enclosure contains more than 15% aluminum. It must be mounted in such a manner

as to eliminate any risk of sparks caused by friction or impact.

The user shall implement any the necessary actions to avoid any electrostatic discharges hazards on

accessible metallic and non-metallic parts of the enclosure.

4.5.2 Send the Orbisphere 3650EX for repair

Important information

There are special regulations for the transport of the Orbisphere 3650EX portable oxygen instrument.

The instrument contains a special lithium battery, which based on current transport regulations by

ADR, IMDG or IATA

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is classified as a dangerous good for all types of transport and is subject to

special dangerous goods regulations.

To send the instrument for repair or maintenance, make sure to remove the lithium battery from

the device. Do not send the battery. To remove the battery, refer to Batteries on page 10.

Remove the battery to prevent dangerous goods violations within the transport chain.

Section 5 Installation

W A R N I N G

Electrical danger and fire hazard. Only use the supplied power cable. Only qualified experts may perform the

tasks detailed in the installation section of this manual, while adhering to all locally valid safety regulations.

W A R N I N G

This instrument is powered by a special non-rechargeable Exproof lithium battery (model 32960).

W A R N I N G

The battery may be installed or changed in the hazardous area.

W A R N I N G

Do not short circuit the battery.

W A R N I N G

The instrument can be connected to a PC via the Interface Box (model 29122) only in a safe area.

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ADR is the European Agreement concerning the International Carriage of Dangerous Goods by

Road. IMDG is the International Maritime Dangerous Goods Code. IATA is the International Air

Transport Association.

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Figure 1 3650Ex Portable analyzer

1 Flow chamber 3 RS232 port 5 Barometric pressure sensor

relief valve

2 EC sensor 4 Battery cap

The series 3650Ex Intrinsically Safe Portable Analyzer is a self-contained instrument configured to

make oxygen or hydrogen gas concentration measurements with Electrochemical (EC) Sensors in a

hazardous area, in either liquid or gaseous samples.

The instrument is a portable unit and should be located convenient to the sample being analyzed.

5.1 Sensor installation

The electrochemical (EC) sensor connects to the instrument base through a 10-pin LEMO connector.

A locking nut holds the sensor in place. Generally, the sensor is shipped already installed in the

instrument. If this is not the case, for full installation instructions, please refer to the Sensor Manual

provided with your instrument.

Connection Sensor Signal LEMO-10 Pin

Guard ring electrode Pin 1

Not used Pin 2

Temperature measurement Pin 3

Counter electrode Pin 4

Not used Pin 5

Temperature measurement Pin 6

Not used Pin 7

Not used Pin 8

Working electrode Pin 9

Not used Pin 10

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5.2 Flow chamber installation

Figure 2 3650Ex (rear view) with 32007E flow chamber

1 Inlet 5 Battery cap 9 Retractable carrying handle

2 Barometric pressure sensor

relief valve switch

6 Outlet 10 Sensor collar

3 Sensor 7 Guide pins 11 Sensor locking nut

4 RS-232 socket and cap 8 Reducing ring

The model 32007E flow chamber draws the liquid or gaseous sample past the EC sensor. It attaches

to the sensor with a threaded collar and is then sealed to the sensor with two O-rings.

The flow chamber centrally located inlet and eccentrically located outlet use either ¼-inch or 6-mm

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.

5.3 Sample tube adapter (optional)

A model 32051A sample tube adapter can be attached to the flow chamber's inlet tubing. This

adapter, in turn, attaches to 6 mm or ¼ inch stainless steel or flexible tubing using rubber gasket

model 32813 (or, for 8 mm tubing, rubber gasket model 32814).

The tightening ring provides a compression fitting to the sample tube.

Figure 3 Sample tube adapter

1 Inlet tubing 3 Check valve 5 Tightening ring

2 Cover 4 Rubber gasket (2 included)

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5.4 WinLog97 PC program installation

Install the WinLog97 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.

5.5 Connections

5.5.1 Batteries

The instrument is designed to work on battery power.

W A R N I N G

Only the model 32960 non-rechargeable Exproof lithium battery can be used with this instrument.

Install the Exproof lithium battery by first unscrewing the instrument's battery cap located on the right

side of the instrument (see Figure 1 on page 21) with a coin or flat screwdriver. Then insert the

battery pack lengthwise, positive end first, and replace the cap.

The power autonomy of the instrument is about 60 hours with a new battery. If battery power should

drop, a LO BAT warning appears in the instrument LCD's top-left corner.

5.5.2 3650Ex Instrument - PC connection

W A R N I N G

Explosion hazard. Only use the Interface Box 29122 in the safe area and never in the explosive area.

The interface box operates from 115 VAC or 230 VAC power. Make sure that the power is correct

before connecting to a power supply. A green power LED is illuminated when the box is plugged into

the power source.

Figure 4 Instrument to PC connection

1 Model 3650EX instrument 3 Model 29122 interface box 5 Model 32538 cable

2 RS-232 LEMO-6 4 Model 32511 cable

The model 29122 interface box must be used to connect the 3650EX instrument to a personal

computer (PC) as illustrated in Figure 4. This unit converts TTL digital signals from the instrument to

RS-232 compatible signals.

W A R N I N G

This connection should be made exclusively within the safe area.

Two cables are supplied with the model 29122 interface box:

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• A model 32511 cable for connection between the 3650EX instrument LEMO-6 connector and the

interface box.

• A model 32538 cable for connection between the interface box and the PC.

The connections should be made as indicated in Figure 4.

Note: When the Interface Box is connected to the 3650Ex instrument, this also acts as a power supply to the

instrument and disconnects the internal battery power source.

Connection Pseudo RS232 Signal LEMO-6 Pin

Transmitted data (TTL-TXD) Pin 1

Received data (TTL-RXD) Pin 2

Not used Pin 3

Not used Pin 4

External voltage input (used with the model 29122 interface only in safe area) Pin 5

Ground Pin 6

Interface box to instrument 9-Pin female connector Interface box to PC 9-Pin male connector

Pin 2 TTL Transmitted data (TXD) RS-232 Transmitted data (TXD)

Pin 3 TTL Received data (RXD) RS-232 Received data (RXD)

Pin 5 Power supply (V+) Ground

Pin 9 Ground Not used

Other pins not used

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.

5.6 Installation checklist

5.6.1 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 22.

5.6.2 Electrochemical sensor

Before making any measurements, for GA2800 ATEX sensors perform the preparation procedure in

the GA2x00 Sensor Manual. For other ATEX sensors perform the sensor service procedure as

described in the EC Sensor Manual.

5.6.3 Flow chamber

The model 32007E flow chamber's inlet and outlet should be free of any obstructions. It is mounted

by means of the sensor's collar, as shown in Figure 2 on page 9. A guide pin on the flow chamber

surface prevents twisting during operation.

When switching from liquid to gaseous samples, ensure that the sensor membrane is dry. Ensure

that the gas from the exit tube of the flow chamber (in gaseous mode) is released at atmospheric

pressure and that it is constant.

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5.7 Storage when not used

At the end of the workday clean the outside of the instrument and interface box (if used) with a damp

cloth. Run clean water through the flow chamber to prevent passageways from clogging. You may

wish to repeat sensor preconditioning (see Preconditioning sensors on page 13) prior to the next

use.

If you do not expect not to use your sensor for more than a few months, you should clean the sensor

as instructed in the Sensor Manual and then store it dry, without electrolyte, and with the calibration

cap in place for protection.

Section 6 User interface

6.1 Keypad and function keys

The front panel of the instrument has a three-digit liquid crystal display (LCD). The LCD includes a

right-side marker to distinguish between gas concentration and temperature display. This marker

also indicates the measurement display units (ppm, ppb, %, etc.) depending on the instrument

model. To the LCD's right is a label showing the measurement units configured at the factory for your

application.

In addition to the controls indicated on the front panel, there is also a pressure relief valve switch on

top of the instrument to enable atmospheric pressure equilibrium for sensor calibration, or for

measurements in gaseous samples in % units. The panel keyboard has the following push-button

controls:

Power switch. This turns instrument power on or off. The instrument starts in measurement mode

Places the instrument in measurement mode

Calibrates the analyzer against a reference sample. This button can be locked out from the

WinLog97 PC program

Stores a measurement value into memory

Backlights the LCD for approximately three minutes

Toggles between gas concentration and temperature measurement displays in measurement

mode, increases or decreases the storage number during storage or memory view, or sets a

calibration value during calibration

To start the analyzer, press the keyboard POWER switch (located bottom left of the keyboard). When

you turn power on, the instrument displays its model number briefly, and then starts in measurement

mode. You can access other instrument functions by pushing one of these keys while turning power

on:

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Sensor calibration - see Sensor calibration on page 20

Start automatic data acquisition - see Automatic data acquisition on page 14

Start memory storage view - see Viewing stored measurements on page 14

Display program identification information

6.2 Taking measurements

Once the system is calibrated, you should be able to begin taking measurements. Connect the top-

mounted inlet to accept your sample, typically this is accomplished by connection to a sampling

valve. The sample flow can be regulated by adjusting the knurled stainless steel knob on top of the

flow chamber.

Minimum flow rates, measurement limits and response times for the various available membranes

are given in the accompanying Sensor Manual.

To switch between gas measurement and temperature measurement, press the Up/Down Arrow

buttons.

To backlight the LCD for approximately three minutes, press the Backlight button.

Note: For measurements of gaseous samples in % units, you must open the barometric pressure sensor relief

valve switch on the top of the instrument from time to time, to allow the pressure inside the instrument to equilibrate

to the barometric pressure.

6.3 Preconditioning sensors

You can expect a more rapid and accurate first result if you precondition the sensor before you take

readings. You may want to precondition prior to each series of measurements, depending on

frequency of use.

To precondition, connect the flow chamber to a convenient sampling source at or below expected O

2

levels. If measurements take place in carbonated samples, precondition with carbonated water.

Open the sampling valve on the flow chamber, just enough for a trickle. Then, switch on the

instrument and watch the LCD. You will see the values drop.

If you are measuring in the 0.1 ppm range, then only a short time is required for the display to fall to

this level, whereas ppb level measurements may require the sensor to remain exposed to the sample

for half an hour or more. You will establish your own requirement with experience.

Once the LCD displays the expected level of O

2

, close off the sample. The sensor is now

preconditioned and ready to use.

6.4 Storing measurements in the instrument

The instrument will store up to 500 gas measurement values, labeled by numbers 0 through 499,

along with the current date and time of each measurement. You have the choice of acquiring this

information manually or automatically, as described below.

Before storing measurements, you should verify the date and time settings of the instrument's

internal clock, as described in Clock settings on page 22.

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6.4.1 Automatic data acquisition

Note: When the instrument is used to automatically store measurement data, all buttons except the POWER key

are disabled. If enough time elapses to store all 500 values, the instrument will return to normal measurement mode

and the buttons re-enabled.

Before starting automatic measurement storage, first select the sampling rate desired using the

Sampling Rate menu of the WinLog97 program (see Automatic data acquisition - setting sampling

intervals on page 18).

1. Switch the instrument OFF (by pressing the POWER key).

2. Then hold down the STO button while switching the instrument back ON. The LCD displays the

message Sto for about one second.

3. Normal gas concentration measurements are displayed for about two minutes.

4. After two minutes the instrument displays the sample number (starting at 000), then the gas

concentration measurement value followed by [- - -] to indicate the measurement is being stored.

5. This storage sequence repeats automatically, at the rate specified by the WinLog97 program

Sampling Rate menu. Values are stored sequentially in sample numbers 000 through 499.

Note: If you have not cleared previously stored values, the storage sequence automatically overwrites the older

values, as they are stored.

6. To end automatic storage, switch the instrument OFF (by pressing the POWER key) while it is in

normal measurement mode and not while it is in the process of automatically storing data.

7. Switching ON again without holding down the STO button returns the instrument to measurement

mode.

Note: If you accidentally interrupt the automatic data storage by switching off the instrument while it is in the

process of storing a value, and you then attempt to download the stored values by the WinLog97 program, you

will get a Windows Checksum Error message, and you will not be able to view the measurement data. If this

happens, then go back to the instrument and manually log one more value (as described in Manual data

acquisition on page 14). You can then download your original set of values to your PC.

6.4.2 Manual data acquisition

Note: You cannot store measurement data manually if the instrument has already been set up to store the data

automatically.

1. For the first measurement you wish to store, press the STO button once to display a sample

number. The default sample number is 000 (for first time access), or the last used memory

position where data was stored, incremented by a value of 1.

2. You can increase or decrease this number by pressing the Up/Down Arrow buttons within three

seconds.

3. Should you decide at this point, not to store this particular measurement, just wait five seconds

and the display returns to measurement mode. You may also exit this routine by pressing the

MEAS button.

4. Press STO a second time, within five seconds of the first. The instrument then displays a brief

clearing [- - -] message, followed by the gas concentration measurement value for about three

seconds

5. The [- - -] message is displayed as this measurement value is stored

6. Repeat the above steps to store additional measurements.

If you stored the first value as sample 001, the instrument automatically increases the next

storage location, and labels it sample 002. You can increase or decrease this number by pressing

the Up/Down Arrow buttons. If you label a sample number the same as a previously stored

measurement value, the new measurement value overwrites the previously stored value.

6.4.3 Viewing stored measurements

1. Switch the instrument OFF (by pressing the POWER key).

2. Hold down the Up Arrow button while switching the instrument back ON. The LCD displays a

sample location number.

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3. Scroll through the numbered sample locations of all the stored values using the Up Arrow and

Down Arrow buttons.

4. To view the actual gas concentration measurement value at a particular sample number, press

the STO button. The LCD now displays the stored value for that sample number.

5. Press STO a second time to return to the next numbered location display, to continue scrolling or

view another stored value.

6. To return to the measurement mode, switch the instrument OFF and then back ON again without

holding down any additional buttons.

6.5 Storing and accessing measurements from the PC

If you have made measurements and stored them in the instrument, you should be ready to bring

them into the WinLog97 program for viewing, copying, saving and printing. See also Options setup

on page 17 for additional information on the WinLog97 program.

6.5.1 Downloading stored values

To download the stored results from the instrument to the PC, choose the DownLoad data command

from the Logger menu.

The DownLoad window presents a display of the stored measurements from the instrument. The

window displays five columns of data:

• Sample (sequence number of the sample)

• Gas (concentration of the measured gas)

• Date (date of the measurement)

• Time (time of the measurement)

• Sample Description

The descriptions can be modified for your applications using the procedures described below.

6.5.2 Altering the sampling point descriptions

For help in identifying the locations of various sampling points that are stored by the instrument, you

may choose the Sampling Point Description command from the Logger menu to bring up the

dialog box.

The measurement values to be placed in positions 0 through 499 (identified as Text 0, Text 1... etc.)

can be described however you wish. Double-click on a particular position (or click Modify), then type

a description in the box. Choose OK when finished entering a description.

When you Close this box, your modifications will be saved, and will appear in the Sample

Description column for the next downloaded list. These descriptions can be modified again later as

your requirements change.

6.5.3 Copying values

To copy the results to the Windows Clipboard, so that the data can be pasted into a spreadsheet,

word processor or other Windows program that accepts tabular text information, choose the

Clipboard command from the Export menu.

6.5.4 Saving values

To save this list of measurements as a text (.txt) file, capable of being recalled by the

WinLog97 program or imported as a file into other Windows programs, choose the Save As

command from the File menu. A dialog box appears, with a space to fill in with an eight-letter name.

(The program automatically attaches a .txt suffix to these files.) If you have saved previous files, a

grayed-out list of these names appears as well. Typical to Windows programs, Directories and

Drives boxes can be used to locate other places to save. You may also type the drive and directory

yourself when saving the file.

6.5.5 Printing values

To place this list of measurements into a tabular format and send it to the Windows printer, choose

the Print command from the File menu. The program asks you to enter Title and Author

information. Note that the Date is fixed by your operating system. The resulting printed list will

include this information on each page.

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6.5.6 Clearing stored values

To clear all the values stored in the instrument via the WinLog97 program, choose the Clear Data

command from the Logger menu. Since this action will clear the storage memory of the instrument, a

warning appears first. Choose OK to bring up the next dialog box to confirm the clear action. Choose

Clear to start the memory clear operation. A message, Reset should be completed appears in this

box when the task is finished.

Note: You can accomplish the same thing passively, by simply allowing the analyzer to overwrite a set of stored

values with new ones.

6.6 Monitoring measurements in real-time

You may wish to analyze a particular sampling point via the WinLog97 program's Monitoring menu.

To use this Monitoring chart, the instrument must be connected to your PC. Choose Monitoring from

the WinLog97 menu to bring up a chart display.

The Monitoring chart shows the gas concentration (in blue), temperature (in red), and pressure (in

green) as the sample is being measured by the instrument. The chart is updated directly from

instrument measurements, at a rate determined by the time scale set in the TIMEBASE box at the

lower right corner of the chart.

Click the TIMEBASE up/down pointers to change the time scale of the divisions of the chart. Each

division mark along the baseline (1, 2, ...10) can be made to represent from 30 seconds to 2½ hours,

providing from 5 minutes to 25 hours of continuously displayed samples. The chart updating rate is

determined by the time scale selected.

Timebase Updating rate* Maximum samples

(10 divisions)

30 Seconds/Division 5 Seconds/Sample 60

1 Minute/Division 5 Seconds/Sample 120

10 Minutes/Division 5 Seconds/Sample 1,200

30 Minutes/Division 9 Seconds/Sample 2,000

1 Hour/Division 18 Seconds/Sample 2,000

2.5 Hours/Division 45 Seconds/Sample 2,000

*This chart's updating rate is independent from the acquisition rate (see Automatic data acquisition - setting

sampling intervals on page 18).

Click on the Continuous box, in the lower right corner, to enable or disable continuous charting.

When this box is checked, the chart scrolls continuously after reaching the 10 division, and the oldest

samples are lost off the left of the chart. When Continuous is not checked, the chart stops displaying

new results after reaching the 10 division, and all subsequent measurements are lost.

Click the up/down pointers for each measurement variable (GAS, TEMPERATURE and

PRESSURE) at the right of the chart to change the scaling of that value on the chart. The display of

each measurement variable may be turned on or off by choosing the appropriate On or Off switch at

the right of the chart.

If your measurements do not chart properly, try using a higher or lower value scale or time base than

the one displayed. Adjust these scale factors before starting the monitoring operation. A running

display of latest sample Gas, Temperature and Pressure is also shown in the bottom-right corner of

the chart.

Use the buttons at the bottom of the chart to control real-time monitoring. Choose Go to clear the

chart and start real-time monitoring display, Stop to stop real-time monitoring and Copy to copy the

data from the chart as text information to the Windows Clipboard. This information can be pasted

from the clipboard into any Windows application, such as a spreadsheet or word processor. Finally,

choose Close to close the Monitoring window.

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Section 7 Options setup

The WinLog97 program is an integral part of the analyzer. Running under Microsoft Windows

®

, it

permits you to list and analyze up to 500 stored measurement values. The program also includes a

special monitoring feature, which lets your computer act as a chart recorder, and enables a hardware

test to ensure that the system is in good working order.

7.1 Main menu basics

When you start the program, it displays the

Main Menu, which automatically maximizes

on opening and appears as follows:

• File serves typical Windows file management needs.

• The Logger menu lets you download measurement values from the instrument, make

modifications to the sample list that can be used to identify sampling point locations, or clear the

instrument's stored values.

• Export places your information into the Windows Clipboard, so that it can be pasted directly into

other Windows programs. This is especially useful when working with spreadsheet programs, but

the information can be pasted into word processing programs as well.

• The Monitoring menu creates a running chart of real-time measurements (see Monitoring

measurements in real-time on page 16). These can also be saved to the Windows Clipboard.

• The Configuration menu lets you see how your system has been configured for your application.

You may change the PC's COM port, the sensor membrane, automatic data acquisition rate, or the

sensor calibration mode. You may also lock out the instrument's CAL button, or for calibration

using a span gas, you may enter the span gas percentage.

• The Troubleshooting menu includes a series of tests, permits the setting of the clock, and

enables a barometric pressure calibration routine.

• The Help menu gives access to the Help file and allows the identification of the

WinLog97 program.

7.2 Instrument - PC connection

For the hardware connection of the instrument to a PC, see 3650Ex Instrument - PC connection

on page 10. The Configuration, Serial port menu lets you choose one of four serial communication

ports.

Usually, COM1 is used to connect to a mouse, so try COM2 first. You may find that a separate SetUp

program supplied with your PC is necessary to activate this port. Click on OK to activate the selected

port. If the port you have selected here is adequate, the WinLog97 program will return to the main

menu. Otherwise, you will see an RS232 ERRORS message advising you to select another port.

7.3 Reviewing instrument configuration

To review if the analyzer is set up as expected, choose the Configuration, Configuration view

command.

You may change a number of these settings using the WinLog97 program. The modifiable settings,

and information relating to these settings are listed in the next section, Configuring the instrument.

However, should you see any unexpected items listed on your screen which you are unable to

correct, please contact your Hach Lange representative.

7.4 Configuring the instrument

The analyzer can be readily configured for your application using the following commands in the

Configuration menu. The instrument must be connected to your PC in order to change its

configuration.

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7.4.1 Automatic data acquisition - setting sampling intervals

The instrument can perform as a standalone data acquisition device, automatically recording gas

measurements with the date and time, and storing up to 500 of these values. Choosing the

WinLog97 program's Configuration, Sampling Rate menu lets you select time intervals (acquisition

rate) for this storage capability.

Use the slide bar to view and select a sampling rate, from 15 seconds to 1 hour. The selected rate is

shown in the Acquisition rate window. Click OK to save this rate. Once your choice is made, the

instrument can be used independently of the WinLog97 program for data acquisition, as described in

Automatic data acquisition on page 14.

Note: The Acquisition rate set via this menu is independent from the monitoring chart updating rate described in

Monitoring measurements in real-time on page 16. The sampling rate menu applies only to automatic data

acquisition, while the chart updating rate is used only for displaying real-time results via the monitoring chart.

7.4.2 Membrane selection

You may find it necessary to use a different type of membrane for different applications. Naturally,

with any membrane change, you will need to re-calibrate (see Sensor calibration on page 20). You

should also consider the changes in required flow rates and response times, which are specified in

the accompanying Sensor Manual.

To re-configure the analyzer, choose Configuration, Membrane to bring up the box which reveals

the membrane models available. Choose OK when the desired membrane is selected.

7.4.3 Selecting type of calibration

7.4.3.1 Select from the PC

You can use the Configuration, Calibration mode command to select how the sensor is to be

calibrated.

Note: Only the calibration modes applicable to your sensor can be selected. Others will be grayed out.

Choose In Air to allow calibration of the sensor in air. Choose In Line to calibrate the sensor directly

in the sampling line, in a sample of known gas content. In instrument models that measure gaseous

samples, you may select In a Span Gas to calibrate. Choose OK when the desired mode is selected.

7.4.3.2 Select from the instrument

1. Switch the instrument power OFF

2. Switch the instrument on by holding down the CAL button and then pressing the POWER button

while still pressing the CAL button

3. The instrument display will show either SPA for span gas calibration, LI for in line calibration, or

Air for in air calibration

4. Use the Up/Down Arrow buttons to change the mode to your choice

5. Press the STO button to set the selected mode. The instrument displays Sto for a few seconds,

then returns to measurement mode

7.4.4 Locking out the instrument's CAL button

You can use the Configuration, Calibration Key Status menu to prevent an accidental sensor re-

calibration from the instrument keyboard.

Choose Disabled to lock out the keyboard CAL button. To unlock this capability, choose Enabled.

Choose OK when the desired mode is selected.

7.4.5 Sensor calibration range checking

When calibration is performed for In Air and In a Span Gas calibration modes, the sensor

measurement current is compared to an ideal current for the selected membrane to determine

whether or not to complete the calibration. You can use the Configuration, Calibration Range

Checking menu to enable or disable sensor calibration range checking in the instrument.

Choose Disabled to calibrate without checking the value of the measurement current, within a range

of 0% to 999% of the ideal current.

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When set to Enabled, at calibration the measurement current should be between 25% and 175% of

the ideal current; if the value is outside of these limits, the calibration fails and Err is displayed on the

instrument LCD. Choose OK when the desired mode is selected.

Note: It is recommended to leave range checking enabled. In special measurement situations it may be necessary

to disable range checking. However, contact a Hach Lange representative for further details before disabling this

feature.

7.4.6 Entering a span gas value

When calibrating the sensor in a span gas, use the Configuration, Span Gas menu to enter the

concentration of the gas to be measured in the span gas. Enter the percentage of measurement gas

in the span gas (e.g. 10.00%), then choose OK.

7.4.7 Dual use (model 3650/113 only)

7.4.7.1 Change from the PC

Use the Configuration, Dual Use menu to change the measurement phase (either dissolved or

gaseous) for the model 3650/113 dual-use analyzer. Choose ppm (dissolved) to set the instrument

for dissolved measurement in liquids, or % (gaseous) to set the instrument to gas phase

measurement.

7.4.7.2 Change from the instrument

1. Switch the instrument power OFF

2. Switch the instrument on by holding down the Down Arrow button and then pressing the

POWER button while still pressing the Down Arrow button

3. The instrument will first display USE followed by either dIS for dissolved phase measurement in

liquids or gAS for gaseous phase measurement

4. Use the Up/Down Arrow buttons to change the mode to your choice

5. Press the STO button to set the selected mode. The instrument displays Sto for a few seconds,

then returns to measurement mode

Section 8 Calibration

8.1 Pressure calibration

Since the instrument is sealed against moisture, you must open the barometric pressure sensor relief

valve switch on top of the instrument to permit the instrument to achieve atmospheric pressure

equilibrium, and take an accurate barometric pressure reading. This must be done with every

calibration. To open the relief valve, depress and hold down for five seconds, then release.

If you have access to an accurate barometer, you may wish to calibrate the instrument's internal

barometric pressure sensor. This is done using the PC WinLog97 program. Choose

Troubleshooting, Pressure Calibration and an informational message will appear to warn you that

the instrument’s current pressure calibration will be lost.

Choose OK to continue. The calibration procedure then displays a Pressure Calibration dialog box.

The Measured Pressure value shows the current instrument pressure reading.

Enter the current atmospheric pressure, in mbars, in the Calibration Pressure entry box. Choose

Calibrate to direct the instrument to read and display the Measured Pressure using this calibration

value. Choose Quit when you are satisfied with the pressure calibration to return to normal

operation.

8.2 Calibration range checking

When calibrating the sensor in air or in a span gas, as detailed in Sensor calibration on page 20,

the new calibration current should be between 25% to 175% of the ideal current (which is stored in

the instrument's non-volatile memory for each membrane). If not, the instrument displays Err on its

LCD and the system will not calibrate. When the system will not calibrate, it is likely that a sensor

service will be required.

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Note: This calibration range checking can be enabled or disabled using the WinLog97 program (see Sensor

calibration range checking on page 18). It is recommended to leave this checking feature enabled. In special

measurement situations it may be necessary to disable range checking. This will allow calibration between 0% to

999% of the ideal current. Contact a Hach Lange representative before disabling this range checking feature.

8.3 Sensor calibration

When delivered, the sensor is pre-calibrated. However, it should be re-calibrated on site, when being

used for the first time, and always after a membrane change. If you have just replaced the

membrane, allow at least half an hour for the membrane to settle before attempting to calibrate.

If you want to verify the accuracy of the calibration, place the analyzer back in measurement mode

and compare your displayed gas concentration against the value in the appropriate tables found in

the accompanying Calibration Tables booklet.

Your calibration is stored internally and is valid for the life of the sensor's membrane, thus it is not

necessary to repeat the calibration procedure until after the next membrane change.

The sensor can be calibrated either by using a span gas, directly in line in a liquid sample, or in air.

The mode of calibration may be selected using the WinLog97 program or directly from the instrument

(see Selecting type of calibration on page 18 for more details).

8.3.1 Calibration in span gas

The span gas calibration procedure may be used if you have a supply of gas with a known

concentration of O

2

(in % units). To perform this type of calibration, the instrument must be set for

calibration In a Span Gas. The WinLog97 program also must be used in this procedure.

Switch on the instrument, if necessary, and wait a minute or so for the displayed measurement to

settle. Then expose the sensor to a span gas sample with a known oxygen concentration. Enter the

percentage of oxygen in the span gas using the WinLog97 program (see Entering a span gas value

on page 19).

1. Press the CAL button. Remember, this button may have been locked out to prevent an accidental

reset (see Locking out the instrument's CAL button on page 18 for details).

2. A brief clearing [- - -] message appears.

3. Press CAL again within a 3 second period.

4. The percentage of the measured current to the ideal one is displayed.

5. When the reading is stable, press CAL again.

If the new calibration current is within 25% to 175% of the ideal current, the instrument displays

CAL and returns to the measurement mode. Calibration is now complete, the sensor is

calibrated, and you can proceed with your measurements. If the new calibration current is not

within this range, the instrument displays Err and returns to measurement mode. The system will

not calibrate, and it is likely that a sensor service will be required.

8.3.2 Calibration in line

The in line calibration procedure can be used to calibrate the sensor directly in line, against a liquid

sample with a known dissolved oxygen concentration. To perform this type of calibration, the

instrument must be set for calibration In line. Switch on the instrument, if necessary, and wait a

minute or so for the displayed measurement to settle. Expose the sensor to a liquid sample with a

known gas concentration.

1. Press the CAL button. Remember, this button may have been locked out to prevent an accidental

reset (see Locking out the instrument's CAL button on page 18 for details).

2. A brief clearing [- - -] message appears.

3. Press CAL again within a 3 second period.

4. A measurement will flash on the LCD, showing the oxygen concentration of the calibration

sample.

5. Assuming you know the gas content to be a certain value, you can adjust the displayed value with

the Up/Down Arrow keys.

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