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   For short time measurement, you may power on by batteries. For long time use, you have to connect with 
   an AC/DC adaptor. 
2. Make sure sensor probe and meter are well connected. Don’t attempt to detach sensor probe from meter

while in operation.

3. When Meter shows erratic readings, it must be sensor failed or power is weak.
4. Only select one of the two electrodes while measuring the same water zone, otherwise meter appears erratic

readings. Read two parameters at the same time are only available for measuring two different water sources.

(1) POWER 
NOTE: Make sure you have connected the electrode to the meter before power on. 
Momentarily press PWR button to turn on the meter, press and hold PWR button to turn off meter. 

(2) COND/EC/TDS/Salt MODE 
Short press SET button to toggle COND 

  EC

  TDS 

  Salt 

(3) CHANGE THE TEMP. UNIT TO 

/

 

Short press UNIT button to toggle 

  or 

(4) HOLD 
Freeze the current readings of Cond./EC/TDS/Salt, then icon “Hold” will appear on the top left of screen. 

(

5) AUTO POWER OFF 

Meter will turn off automatically in 15 minutes when no use, to disable auto power off function by pressing 
HOLD and PWR button, “n” momentarily shows on screen, now meter is at non-sleep mode, then turns to 
normal measurement, Meter default auto power off. 

(6) FACTORY RESET 
a)

Cond. electrode

Whenever replacing a new cond. electrode. Long press SET+CAL to enter Cond. calibration mode then strongly 
recommend doing factory reset by press SET+UNIT under 1413 uS calibration mode, screen will   
show “rFS” momentarily. 

(7) TEMPERATURE PROBE TYPE SELECTION 
NOTE: If using NTC 10K probe but select 30K type. The temperature value will not 

be 

accurate. 

Default setting is NTC 10K. User can change it depends on the electrode type to get the correct value. 

NTC 10K:  Negative Temperature Coefficient 25

  = 10 K 

NTC 30K:  Negative Temperature Coefficient 25

  = 30 K 

NOT: 

External temperature probe is excluded, user can enter the temperature degree by their own 
temperature instrument, default: 25

  Adjustable range: 0.0

~90.0

 

Step 1: Must select correct probe type before measurement, otherwise the value would be incorrect. 
Step 2: Long press UNIT button, the meter default is “ntc 10k”, short press UNIT button to toggle ntc 30k 

  not. 

Step 3: Long press UNIT button again to save the setting, meter shows “SA” at the bottom of LCD and then 

return to normal measurement mode. 

3

Summary of Contents for CDH-SD11

Page 1: ...e mail info omega com For latest product manuals www omegamanual info Shop online at omega com User sGuide CDH SD11 Conductivity TDS and Salinity Meter with Real Time SD Card Data Logger TM 2 e Fo...

Page 2: ...pecifications without notice Servicing North America U S A Omega Engineering Inc Headquarters Toll Free 1 800 826 6342 USA Canada only Customer Service 1 800 622 2378 USA Canada only Engineering Servi...

Page 3: ...two years Electrode is one year SUPPLIED Meter Electrode x 1pc Cond EC TDS Salt Battery AAA x 3 pcs 1413uS buffer solution x1 9V adaptor Black carrying case 8G SD card SPECIFICATION Model CDH SD11 Par...

Page 4: ...stant K value Temp coefficient compensation tds K factor value mode Long press again to escape the K value setting Recovery to factory setting under calibration mode SET CAL Conductivity Calibration H...

Page 5: ...uto power off function by pressing HOLD and PWR button n momentarily shows on screen now meter is at non sleep mode then turns to normal measurement Meter default auto power off 6 FACTORY RESET a Cond...

Page 6: ...r 2 Power on the meter by pressing PWR button 3 First to enter the cell constant K value of the Cond electrode is required e g Refer to the label on the top handle of the probe Long press SET UNIT to...

Page 7: ...right digit Long press SET button to finish calibration screen will show SA The adjustable range is 1 to 7 4 Or to escape setting by long press SET UNIT the bottom of screen will show ESC in few seco...

Page 8: ...measurement except to change the display unit from uS mS to PPM PPT Display will show TDS values at the same time the left bottom display will show the temp value of the measured solution NOTE If the...

Page 9: ...808 1837 1866 1896 1925 1954 1983 2013 2042 2071 2101 2103 CONDUCTIVITY STANDARD SOLUTION 12880 S cm at 25 C Conductivity reading will be affected by the temperature S cm S cm 5 10 15 16 17 18 19 20 2...

Page 10: ...c If the SD card is being used for the first time it is recommended that the card be formatted SD Card Formatting NOTE Always confirm that the device is compatible with the SD SDHC or SDXC memory card...

Page 11: ...essions the recorded data will be switched into the selected temperature unit 1 Power on the meter by AAA batteries or 9V AC DC adaptor 2 After inserting the SD card display will show icon SD on the b...

Page 12: ...for no data can be cleared or SD card isn t being inserted NOTE Once clear the data by long press CAL there is no way to recover the data If you want to keep the previous data rename the file MANUAL c...

Page 13: ...ensor type or adjust temperature manually Long press UNIT button then press UNIT to select not Q2 Appear Error codes A2 Make sure if Hold appears on LCD ERROR CODES Code Description The electrode were...

Page 14: ...A if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to m...

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