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GENERAL TOOLS & INSTRUMENTS

80 White Street

New York, NY 10013-3567

PHONE (212) 431-6100

FAX (212) 431-6499

TOLL FREE (800) 697-8665

e-mail: [email protected]

www.generaltools.com

DOM5512SD User’s Manual

Specifications subject to change without notice

©2010 GENERAL TOOLS & INSTRUMENTS

NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.

MAN#DOM5512SD 12/08/10

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Summary of Contents for DOM5512SD

Page 1: ...DOM5512SD USER S MANUAL DISSOLVED OXYGEN METER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product ...

Page 2: ... the Oxygen Probe 8 9 Normal Operation 9 10 Holding and Storing Measurements 10 Automatic vs Manual Datalogging 11 Transferring Data from the SD Card to a Computer 12 13 Specifications 13 14 Maintenance Troubleshooting Tips 14 Replacement Parts Optional Accessories 15 Warranty Information 15 Return for Repair Policy 15 2 ...

Page 3: ... an instrument suitable for precision measurement of DO levels in a wide range of applications Its 7 5 in long polarographic electrolyte filled oxygen probe measures not only the DO concentration of a liquid but the liquid s water temperature as well The meter uses a single custom microcontroller to display readings from 0 to 20 milligrams liter mg L with a resolution of 0 1 mg L and an accuracy o...

Page 4: ...display Powered by six AA batteries or optional 9 VDC adapter Readings switchable between ºF and ºC OPERATING INSTRUCTIONS WHAT S IN THE CASE The DOM5512SD comes fully assembled in a hard carrying case along with the following accessories An oxygen probe Electrolyte to fill the probe Two spare probe heads with diaphragm set A 2 GB SD memory card This user s manual Figure 1 shows all of the control...

Page 5: ...LD ESC button 1 4 REC ENTER button 1 5 button 1 6 button 1 7 TIME button 1 8 LOGGER SET button 1 9 Kickstand 1 10 Battery compartment cover 1 11 Battery compartment cover screws 1 12 Tripod attachment nut 1 13 Socket for DO probe 1 14 Socket for 9V AC DC adapter 1 15 RESET button 1 16 RS 232 output jack 1 17 SD card socket TOP RIGHT SIDE BACK BOTTOM FRONT ...

Page 6: ... in the lower half of the display Quickly within three seconds press the REC ENTER button If you press buttons too slowly in setup mode the screen will revert to the normal display To return to the setup sequence press and hold the LOGGER SET button again To move ahead to the next field in the sequence or to the next parameter press the HOLD ESC button Pressing the REC ENTER button causes the word...

Page 7: ...e the selection If enabled the power off function shuts off the DOM5512SD after a period of inactivity of ten minutes 7 Enable or disable the beeper Once the auto power off function has been enabled or disabled the display will show the word yES over the word bEEP Press the button until the desired setting yES or no is displayed and then press the REC ENTER button to store the selection 8 Choose a...

Page 8: ...erm ESC If ESC appears press the HOLD ESC button to exit the setup procedure and enter normal operating mode In this mode the display will show mg L units by default CALIBRATING THE OXYGEN PROBE The DOM5512SD s oxygen probe must be calibrated before you use it for the first time and again before each use after a long period weeks or months of sitting idle General also recommends calibrating the pr...

Page 9: ...ers to press the REC ENTER and HOLD ESC buttons at the same time Release your fingers once the display shows the following indicating that air typically has an oxygen content of 20 9 20 9 CAL 8 Press the REC ENTER button The display will then count down from 30 seconds to 0 When the countdown is complete press the button once to return to the normal display of mg L NORMAL OPERATION 1 To measure th...

Page 10: ... you can turn off the backlight which is on by default by briefly pressing but not holding the POWER ESC button To reactivate the backlight briefly press the button again Whenever the instrument is in measurement mode you also can check the current date and time by briefly pressing the TIME button Doing so causes both values to appear briefly at the lower left of the display HOLDING AND STORING ME...

Page 11: ...g Step 5 of the setup procedure Then press the REC ENTER button once The display will show the term REC on the top line a value in the middle and below it the letter P on the left and a number from 1 to 99 on the same line to the right The number indicates the position on the SD card that will be used to store manually logged data Now press the LOGGER SET button This will cause the beeper to sound...

Page 12: ... has an SD card slot or through an SD card reader Because the files containing time stamped data logs have the extension xls they open in Microsoft s Excel application Figures 4 5 and 6 show three kinds of Excel presentations a data only screen a graphics only screen and a screen that mixes both types of content 12 Fig 5 Typical Excel graphics only screen Fig 4 Typical Excel data only screen ...

Page 13: ...ent accuracy 0 4 mg L Oxygen in air measurement range 0 to 100 Oxygen in air measurement resolution 0 1 O2 Oxygen in air measurement accuracy 0 7 O2 Temperature measurement range 32º to 122ºF 0º to 50ºC Temperature measurement resolution 0 1ºF or ºC Temperature measurement accuracy 1 5ºF 0 8ºC Compensation for temperature Automatic Compensation for altitude 0 to 29 200 ft 0 to 8 900 meters Fig 6 T...

Page 14: ...ratic first make sure that the probe head contains enough fresh electrolyte To fill the head with electrolyte follow the instructions in the Calibrating the oxygen probe section If that doesn t solve the problem replace the probe head diaphragm set In either event the next step should be to recalibrate the probe When the icon appears in the left corner of the display it s time to replace the six A...

Page 15: ...horized service center freight prepaid and insured Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product In no event shall General be liable for any incidental special consequential or punitive damages or for any cost attorneys fees expenses or losses alleged to be a consequence of any damage due to failure of or de...

Page 16: ...1 6100 FAX 212 431 6499 TOLL FREE 800 697 8665 e mail sales generaltools com www generaltools com DOM5512SD User s Manual Specifications subject to change without notice 2010 GENERAL TOOLS INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN DOM5512SD 12 08 10 ...

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