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Operating Information

4.2 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

The LCD includes a right-side marker to distinguish between gas concentration measurements 
and temperature. This marker also indicates the measurement display units (ppm, ppb, %, kPa 
or mbar depending on the instrument model).

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.

4.2.1 Preconditioning sensors

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

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

2

 or H

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.

Typically for oxygen, 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

 or H

2

, close off the sample. The sensor is now 

preconditioned and ready to use.

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

Summary of Contents for ORBISPHERE 3650 Atex

Page 1: ...DOC024 52 93004 ORBISPHERE Model 3650 Atex USER MANUAL 10 2019 Edition 13...

Page 2: ...2...

Page 3: ...21 3 6 2 Electrical connections 21 3 6 3 Instrument clock setting 21 3 6 4 Electrochemical sensor 21 3 6 5 Flow chamber 21 3 7 Storage when not used 21 Section 4 Operating Information 23 4 1 Operating...

Page 4: ...ng 39 6 4 Sensor calibration 40 6 4 1 Calibration in a span gas 40 6 4 2 Calibration in line 41 6 4 3 Calibration in air oxygen sensors only 42 Section 7 Maintenance and Troubleshooting 43 7 1 Mainten...

Page 5: ...nd 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 complia...

Page 6: ...nce of the interface box should be performed exclusively by personnel specialized and authorized to work on electrical equipment in accordance with relevant local regulations WARNING Disconnect the in...

Page 7: ...ndicates 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 not...

Page 8: ...EN 60079 11 These instruments are certified II 1G EX ia IIC T4 Ga under EC type Examination Certificate number LCIE 03 ATEX 6003 X Category Explanation II 1 G ATEX marking Surface apparatus with perm...

Page 9: ...r glementation europ enne directive UE 2002 96 EC les utilisateurs de mat riel lectrique en Europe doivent d sormais retourner le mat riel us ou p rim au fabricant pour limination sans frais pour l u...

Page 10: ...htlijn 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 apparatu...

Page 11: ...ment marked with the above symbol may not be disposed of in European public disposal systems after 12 August 2005 Hach will offer to take back free of charge to the customer any old unserviceable or r...

Page 12: ...10 General Information...

Page 13: ...IC T4 Ga ISO Certification ISO9001 EN29001 29122 Interface Box Power Supply 120Vac 50 60Hz Model 29122 A 230Vac 50 60Hz Model 29122 B Power Consumption 11VA Model 29122 A 7VA Model 29122 B Fuse Max cu...

Page 14: ...erature compensation circuit accounts for temperature variations Hence the output voltage varies only with oxygen concentration 2 3 2 Measuring hydrogen The sensor circuitry performs four functions Ma...

Page 15: ...s that product has been found to comply with the Essential Health and Safety Requirements relating to the design and construction of products intended for use in potentially explosive atmospheres give...

Page 16: ...e front of enclosure and sensor frame are made of aluminum a LCD display a plastic film panel keyboard two electronic boards and one cell It shall be equipped with an electrochemical sensor of type 31...

Page 17: ...lectrostatic discharges hazards on accessible metallic and non metallic parts of the enclosure 14 EXIGENCES ESSENTIELLES DE SANTE ET DE SECURITE ESSENTIAL HEALTH AND SAFETY REQUIREMENTS Couvertes par...

Page 18: ...920 Modifications de composants Issue 02 2009 07 21 Change in name of the company to HACH LANGE S rl Normative update according to EN 60079 0 2006 and EN 60079 11 2007 standards Use of type X1Y0E prob...

Page 19: ...stored in memory and downloaded to a personal computer for further analysis The instrument is a portable unit and should be located convenient to the sample being analyzed WARNING Electrical danger an...

Page 20: ...llar and is then sealed to the sensor with two O rings The flow chamber s centrally located inlet and eccentrically located outlet use either inch or 6 mm diameter transparent plastic tubing Connect b...

Page 21: ...o 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 3 5 Conn...

Page 22: ...internal battery power source 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 supp...

Page 23: ...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...

Page 24: ...22 Installation...

Page 25: ...instrument as indicated in Figure 1 on page 17 to enable atmospheric pressure equilibrium for sensor calibration or for measurements in gaseous samples in units The panel keyboard has the following p...

Page 26: ...age 17 the instrument can be operated independently making measurements as a portable oxygen or hydrogen analyzer You may store these measurement values for later analysis via the WinLog97 program on...

Page 27: ...e 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 4 2 1 Preconditioning sensors You can...

Page 28: ...y pressing the POWER key while it is in normal measurement mode and not while it is in the process of automatically storing data Switching ON again without holding down the STO button returns the inst...

Page 29: ...e 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 th...

Page 30: ...surements 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 measurem...

Page 31: ...rocessor or other Windows program that accepts tabular text information choose the Clipboard command from the Export menu 4 4 4 Saving values To save this list of measurements as a text txt file capab...

Page 32: ...same thing passively by simply allowing the analyzer to overwrite a set of stored values with new ones 4 5 Monitoring measurements in real time You may wish to analyze a particular sampling point via...

Page 33: ...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...

Page 34: ...32 Operating Information...

Page 35: ...ese keystroke commands for faster operation File shown below serves typical Windows file management needs WinLog97 data files can be opened saved under a different name closed or printed You can also...

Page 36: ...to the Help file and allows the identification of the WinLog97 program version number and copyright date 5 2 Instrument PC connection For the hardware connection of the instrument to a PC Refer to Win...

Page 37: ...tervals 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 p...

Page 38: ...sor can be selected Others will be grayed out Note Calibration mode can also be selected from the instrument keyboard see below 5 4 3 2 Select from the instrument Choose OK when the desired membrane i...

Page 39: ...ent Choose Disabled to calibrate without checking the value of the measurement current within a range of 0 to 999 of the ideal current When set to Enabled at calibration the measurement current should...

Page 40: ...e instrument With this dual phase instrument you can also select the measurement phase dissolved or gaseous using the instrument panel buttons as follows 1 Switch the instrument power OFF 2 Switch the...

Page 41: ...ox The Measured Pressure value shows the current instrument pressure reading Note Since the instrument is sealed against moisture you must open the barometric pressure sensor relief valve switch locat...

Page 42: ...ith a known concentration in units use O2 for oxygen sensors or H2 for hydrogen sensors To perform this type of calibration the instrument must be set for calibration In a Span Gas The WinLog97 progra...

Page 43: ...nown gas concentration 1 Press the CAL button Remember this button may have been locked out to prevent an accidental reset refer to Locking out the instrument s CAL button on page 37 for details 2 A b...

Page 44: ...e Switch on the instrument if necessary and wait a minute or so for the displayed measurement to settle 1 Press the CAL button Remember this button may have been locked out to prevent an accidental re...

Page 45: ...t be connected to your PC and placed in measurement mode to perform these tests 7 2 1 Serial test Normally the analyzer will inform you of a disconnected RS 232 serial link when appropriate However yo...

Page 46: ...nt If this is correct choose Ok else if either date or time must be changed choose Modify to bring up the next screen Enter the current date and time and choose Ok to store the entry into the instrume...

Page 47: ...10 mV to 4 V Pressure channel 100 mV to 100 mV The Range window on the right side of the Current channel voltage indicates one of the four instrument ranges 0 less sensitive to 3 most sensitive 7 2 6...

Page 48: ...46 Maintenance and Troubleshooting...

Page 49: ...to connect 3650Ex instrument to interface box Supplied with 2 connectors 32538 02 2 meter RS232 cable to connect the interface box 29122 to a computer for the 3650Ex Supplied with 2 female 9D connect...

Page 50: ...48 Part Lists 8 3 Accessories Part N Description 32051A Adapter for attaching flow cell inlet tubing to customer s sample tube Includes one 6 mm 32813 and one 8 mm 32814 rubber sealing gasket...

Page 51: ...s hach com www hach com HACH LANGE GMBH Willst tterstra e 11 D 40549 D sseldorf Germany Tel 49 0 2 11 52 88 320 Fax 49 0 2 11 52 88 210 info de hach com www de hach com HACH LANGE S rl 6 route de Comp...

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