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H74.0.05.6C-06 

Operating Manual GMH 3651 

page 14 of 18 

9.2 

„Func-CYCL“: Automatic Recording With Selectable Logger-Cycle-Time 

The Logger-Cycle-

Time is selectable (p.r.t. Configuration). For example „CYCL“ = 1:00: A measuring is 

recorded after each 60 seconds. 
 
Max. number of data sets: 

8000 

Cycle time: 

 

 

0:01...60:00 (minutes:seconds, min 1s, max 1h), selectable in the configuration  

A data set contains:  

- oxygen concentration in mg/l or ppm 
- oxygen saturation in percent or partial pressure in hPa or mmHg 
- temperature value at the time of recording in °C or °F 
- absolute pressure in hPa or mmHg or depth in m m 

Recording time: 

 > 20 days with fresh battery (with output activated: OUT = SEr) 
With mains adapter: limited just by memory and cycle time, up to 333 days 

 
 

Starting a recording: 

By pressing "Store" (key 6) for 2 seconds the recording will be initiated. After that the display shows 
‘St.XXXX‘ for a short time whenever a measuring is recorded. XXXXX is the number of the measuring 
1..9999. 
 

If the logger memory is full, the display will show: 

 

 The recording automatically will be stopped.

  

 

Stopping the recording manually: 

By pressing "Store" (key 6) the recording can be stopped manually. Then the following choice appears: 

 

 

  

 
 
 

The selection can be made by 

 (key 2) and 

 (key 5). "Quit" (key 6) enters the choice. 

 

If you try to switch off the instrument in the cyclic recording operation You will be asked 
once again if the recording should be stopped.  
The device can only be switched off after the recording has been stopped! 
The Auto-Power-Off-function is deactivated during recording! 

Clear Recordings: 

When “Store“ is pressed for 2 seconds, the choice for clearing the logger memory will be displayed: 

 
The selection can be made by 

 (key 2) and 

 (key 5). "Quit" (key 6) enters the choice. 

 

10 Inspection of the accuracy / Adjustment Services 

The instrument can be sent to the manufacturer for adjustment and function test. 
Only the manufacturer can check all systems on correct them if necessary. 

Calibration certificates 

– DKD-certificates – other certificates: 

If device should be certificated for its accuracy, this is not possible for dissolved oxygen measuring, only for 
abs. Pressure and temperature. 
 

 

Stop the 
recording 

Do not stop the 
recording 

Clear all 
recordings 

Clear nothing  

(cancel menu)  

Summary of Contents for GMH 3651

Page 1: ...Str 26 D 93128 Regenstauf 49 0 9402 9383 0 49 0 9402 9383 33 info greisinger de As of Version 1 0 Operating Manual GMH 3651 Oxygen meter for dissolved oxygen with integrated temperature and pressure...

Page 2: ...IBRATION AL 1 PT 11 8 2 2 3 POINT CALIBRATION AL 2 PT AL 3 PT 12 8 3 EVALUATION OF SENSOR STATE ELE 12 9 OPERATION OF THE LOGGER 13 9 1 FUNC STOR STORING SINGLE MEASUREMENT SETS 13 9 2 FUNC CYCL AUTOM...

Page 3: ...s device has been designed and tested in accordance with the safety regulations for electronic devices However its trouble free operation and reliability cannot be guaranteed unless the standard safet...

Page 4: ...s to be set again 2 Mains operation with power supply When using a power supply please note that operating voltage has to be 10 5 to 12 V DC Do not apply overvoltage Cheap 12V power supplies often hav...

Page 5: ...4 ok arrow Signals if oxygen and temperature values are stable 5 CAL arrow Signals if automatic calibration is in progress 6 SAL arrow Signals that the salinity correction is aktivated 7 Logg arrow Sh...

Page 6: ...lip at position 90 Pop up clip at position 180 Function The device with a closed pop up clip can be plainly laid onto a table or attached to a belt etc The device with pop up clip at position 90 can b...

Page 7: ...h in meter only with depth accessory TMV 3600 DEP Depth measuring activated Second display always shows depth in meter only with depth accessory TMV 3600 U N T T C All temperatures in degree Celsius e...

Page 8: ...rement 0 0 SET AL Set Alarm AL 1 ON NO SO Monitoring Oxygen Alarm on with buzzer Alarm on without buzzer OFF No alarm monitoring for oxygen AL N ONC Monitoring Oxygen Concentration in P 02 Monitoring...

Page 9: ...to ageing Therefore we recommend to maintain the electrode at monthly intervals p r t Electrode maintenance Please note Make it a rule to always store the electrode in a humid environment in the stora...

Page 10: ...xygen concentration requires entering the salinity of the medium p r t Configuration The correction of salinity is based on media on a water basis whose chemical content is similar to sea water The co...

Page 11: ...ctrode is exposed to air with a relative atmospheric humidity of 100 Proceed as follows Put some distilled water in a bottle Close bottle and generate a water steam saturation 100 rel atmospheric humi...

Page 12: ...blinks no valid reference is recognised by the instrument As soon the values for oxygen and temperature are stable the calibration of the second point will be finished At 2 point calibration the calib...

Page 13: ...f data sets 1000 A data set contains oxygen concentration in mg l or ppm oxygen saturation in percent or partial pressure in hPa or mmHg temperature value at the time of recording in C or F absolute p...

Page 14: ...The recording automatically will be stopped Stopping the recording manually By pressing Store key 6 the recording can be stopped manually Then the following choice appears The selection can be made by...

Page 15: ...nels oxygen concentration in mg l or ppm oxygen saturation in percent or partial pressure in hPa or mmHg temperature value at the time of recording in C or F absolute pressure in hPa abs or mmHg abs o...

Page 16: ...rtly switch between ELE total electrode state evaluation in SL 1 Slope at 0 Air saturated water 1 SL 2 Slope at air saturated water 100 1 Date time display of data set or Change between the different...

Page 17: ...or Sensor cable or instrument defect return to manufacturer for repair ERR 7 system error return to manufacturer for repair If BAT is flashing the battery will be exhausted soon Further measurements a...

Page 18: ...000 data sets with measuring point input Alarm Buzzer visual interface 2 channels selectable oxygen unit and temperature Additional functions Min max hold auto hold Housing Break proof ABS housing Pro...

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